<SEC-DOCUMENT>0001104659-21-102114.txt : 20210809
<SEC-HEADER>0001104659-21-102114.hdr.sgml : 20210809
<ACCEPTANCE-DATETIME>20210809160133
ACCESSION NUMBER:		0001104659-21-102114
CONFORMED SUBMISSION TYPE:	10-Q
PUBLIC DOCUMENT COUNT:		62
CONFORMED PERIOD OF REPORT:	20210630
FILED AS OF DATE:		20210809
DATE AS OF CHANGE:		20210809

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CATABASIS PHARMACEUTICALS INC
		CENTRAL INDEX KEY:			0001454789
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		10-Q
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-37467
		FILM NUMBER:		211156346

	BUSINESS ADDRESS:	
		STREET 1:		100 HIGH STREET
		STREET 2:		28TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02110
		BUSINESS PHONE:		617-349-1971

	MAIL ADDRESS:	
		STREET 1:		100 HIGH STREET
		STREET 2:		28TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02110
</SEC-HEADER>
<DOCUMENT>
<TYPE>10-Q
<SEQUENCE>1
<FILENAME>catb-20210630x10q.htm
<DESCRIPTION>10-Q
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style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-size:12pt;font-weight:bold;">UNITED STATES</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-size:12pt;font-weight:bold;">SECURITIES AND EXCHANGE COMMISSION</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:9pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Washington, DC 20549</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:2pt;visibility:hidden;">&#8203;</span></p><div style="font-family:'Times New Roman','Times','serif';font-size:9.0pt;margin-bottom:0pt;min-height:1.19em;position:relative;width:100%;"><div style="background-color:#000000;height:1px;position:relative;top:0.6em;width:25.0%;border:none;margin:0 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Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:top;width:25%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="position:absolute;top:0pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:top;width:25%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt 0pt 3pt 0pt;">Large&#160;accelerated&#160;filer</p></td><td style="vertical-align:top;width:25%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt 0pt 3pt 0pt;"><span 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Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:4pt;visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:9pt;">Indicate by check mark whether the registrant is a shell company (as defined in Rule&#160;12b-2 of the Exchange Act).&#160;&#160;</span><b style="font-size:9pt;font-weight:bold;">Yes</b><span style="font-size:9pt;">&#160;</span><ix:nonNumeric format="ixt-sec:boolballotbox" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" name="dei:EntityShellCompany" id="Narr_sYvJZ2fMM0-sTx63BzzkPg"><span style="font-family:'Segoe UI Symbol';font-size:9pt;">&#9744;</span></ix:nonNumeric><b style="font-size:9pt;font-weight:bold;">&#160;&#160;No</b><span style="font-size:9pt;">&#160;</span><span style="font-family:'Segoe UI Symbol';font-size:8pt;">&#9746;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:4pt;visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:9pt;line-height:1.19;margin:0pt;">As of July 30, 2021, there were <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" format="ixt:numdotdecimal" scale="0" contextRef="As_Of_7_30_2021_p98KmgAfaUKT_RvOAxmQvw" decimals="INF" name="dei:EntityCommonStockSharesOutstanding" id="Narr_b2asGvdQO02CvoP6ji9XGA">76,948,803</ix:nonFraction> shares of the registrant&#8217;s Common Stock, par value $0.001 per share, outstanding.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:3pt;visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-bottom:1pt;padding-top:1pt;border-bottom:3.0pt solid #000000;border-top:1px solid #000000;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p><p style="display:none;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:0pt;margin:0pt;"><span style="font-size:0pt;line-height:1.19;visibility:hidden;">&#8203;</span></p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Times New Roman Bold';font-size:1pt;font-weight:bold;visibility:hidden;">&#8203;</span></p><a id="_b7c73f82_e76e_487e_8493_50ff46760cfe"></a><a id="TABLEOFCONTENTS_196972"></a><a id="TOC"></a><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">TABLE OF CONTENTS</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td colspan="2" style="vertical-align:bottom;width:10.61%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"></div></div></td><td style="vertical-align:bottom;width:82.72%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"></div></div></td><td style="vertical-align:top;width:1.96%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="position:absolute;top:0pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;width:4.7%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"></div></div></td></tr><tr><td colspan="2" style="vertical-align:bottom;width:10.61%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;width:82.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;">&#160;</p></td><td style="vertical-align:top;width:1.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td style="vertical-align:bottom;width:4.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Page</b></p></td></tr><tr><td colspan="3" style="background-color:#cceeff;vertical-align:top;width:93.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><a href="#PARTIFINANCIALINFORMATION_707847"><b style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:bold;line-height:1.19;text-align:left;">PART&#160;I. FINANCIAL INFORMATION</b></a></p></td><td style="background-color:#cceeff;vertical-align:top;width:1.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;width:4.7%;border-top:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">3</p></td></tr><tr><td style="vertical-align:top;width:6.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><a href="#Item1FinancialStatements_973210"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Item&#160;1.</span></a></p></td><td colspan="2" style="vertical-align:top;width:86.74%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><a href="#Item1FinancialStatements_973210"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Financial Statements (unaudited)</span></a></p></td><td style="vertical-align:top;width:1.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;width:4.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">3</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:top;width:6.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td colspan="2" style="background-color:#cceeff;vertical-align:top;width:86.74%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><a href="#CondensedConsolidatedBalanceSheets_34177"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Condensed Consolidated Balance Sheet as of June&#160;30, 2021 and December&#160;31, 2020</span></a></p></td><td style="background-color:#cceeff;vertical-align:top;width:1.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;width:4.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">3</p></td></tr><tr><td style="vertical-align:top;width:6.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td colspan="2" style="vertical-align:top;width:86.74%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><a href="#CondensedConsolidatedStatementsofOperati"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Condensed Consolidated Statements of Operations for the three and six months ended June&#160;30, 2021 and 2020</span></a></p></td><td style="vertical-align:top;width:1.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;width:4.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">4</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:top;width:6.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td colspan="2" style="background-color:#cceeff;vertical-align:top;width:86.74%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><a href="#CondensedConsolidatedStatementsofCompreh"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Condensed Consolidated Statements of Comprehensive Loss for the three and six months ended June&#160;30, 2021 and 2020</span></a></p></td><td style="background-color:#cceeff;vertical-align:top;width:1.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;width:4.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">5</p></td></tr><tr><td style="vertical-align:top;width:6.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td colspan="2" style="vertical-align:top;width:86.74%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><a href="#CondensedConsolidatedStatementsofRedeema"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Condensed Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders&#8217; Equity for the three and six months ended June&#160;30, 2021 and 2020</span></a></p></td><td style="vertical-align:top;width:1.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;width:4.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">6</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:top;width:6.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td colspan="2" style="background-color:#cceeff;vertical-align:top;width:86.74%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><a href="#CondensedConsolidatedStatementsofCashFlo"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Condensed Consolidated Statements of Cash Flows for the six months ended June&#160;30, 2021 and 2020</span></a></p></td><td style="background-color:#cceeff;vertical-align:top;width:1.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;width:4.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">7</p></td></tr><tr><td style="vertical-align:top;width:6.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td colspan="2" style="vertical-align:top;width:86.74%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><a href="#NotestoCondensedConsolidatedFinancialSta"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Notes to Condensed Consolidated Financial Statements</span></a></p></td><td style="vertical-align:top;width:1.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;width:4.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">8</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:top;width:6.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><a href="#Item2ManagementsDiscussionandAnalysisofF"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Item&#160;2.</span></a></p></td><td colspan="2" style="background-color:#cceeff;vertical-align:top;width:86.74%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><a href="#Item2ManagementsDiscussionandAnalysisofF"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Management&#8217;s Discussion and Analysis of Financial Condition and Results of Operations</span></a></p></td><td style="background-color:#cceeff;vertical-align:top;width:1.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;width:4.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">17</p></td></tr><tr><td style="vertical-align:top;width:6.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><a href="#Item3QualitativeandQuantitativeDisclosur"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Item&#160;3.</span></a></p></td><td colspan="2" style="vertical-align:top;width:86.74%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><a href="#Item3QualitativeandQuantitativeDisclosur"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;white-space:pre-wrap;"> Qualitative and Quantitative Disclosures About Market Risk</span></a></p></td><td style="vertical-align:top;width:1.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;width:4.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">25</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:top;width:6.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><a href="#Item4ControlsandProcedures_343949"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Item&#160;4.</span></a></p></td><td colspan="2" style="background-color:#cceeff;vertical-align:top;width:86.74%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><a href="#Item4ControlsandProcedures_343949"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Controls and Procedures</span></a></p></td><td style="background-color:#cceeff;vertical-align:top;width:1.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;width:4.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">26</p></td></tr><tr><td style="vertical-align:top;width:6.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td colspan="2" style="vertical-align:top;width:86.74%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:top;width:1.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;width:4.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td></tr><tr><td colspan="3" style="background-color:#cceeff;vertical-align:top;width:93.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:10pt;text-indent:-10pt;margin:0pt;"><a href="#PARTIIOTHERINFORMATION_252481"><b style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:bold;line-height:1.19;text-align:left;">PART&#160;II. OTHER INFORMATION</b></a></p></td><td style="background-color:#cceeff;vertical-align:top;width:1.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;width:4.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">27</p></td></tr><tr><td style="vertical-align:top;width:6.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><a href="#Item1ARiskFactors_520994"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Item&#160;1A.</span></a></p></td><td colspan="2" style="vertical-align:top;width:86.74%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><a href="#Item1ARiskFactors_520994"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Risk Factors</span></a></p></td><td style="vertical-align:top;width:1.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;width:4.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">27</p></td></tr><tr><td style="vertical-align:top;width:6.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><a href="#Item6Exhibits_784279"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Item&#160;6.</span></a></p></td><td colspan="2" style="vertical-align:top;width:86.74%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><a href="#Item6Exhibits_784279"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Exhibits</span></a></p></td><td style="vertical-align:top;width:1.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;width:4.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">27</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:top;width:6.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td colspan="2" style="background-color:#cceeff;vertical-align:top;width:86.74%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:top;width:1.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;width:4.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td></tr><tr><td colspan="3" style="vertical-align:top;width:93.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:10pt;text-indent:-10pt;margin:0pt;"><a href="#SIGNATURES_688981"><b style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:bold;line-height:1.19;text-align:left;">SIGNATURES</b></a></p></td><td style="vertical-align:top;width:1.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;width:4.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">28</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt 0pt 12pt 0pt;"><span style="font-weight:bold;margin-bottom:0pt;visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><span style="font-weight:bold;margin-bottom:0pt;visibility:hidden;">&#8203;</span></p><p style="display:none;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:0pt;margin:0pt 0pt 12pt 0pt;"><span style="font-size:0pt;font-weight:bold;line-height:1.19;margin-bottom:0pt;visibility:hidden;">&#8203;</span></p></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;"><span style="visibility:hidden;">&#8203;</span></p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><a id="_06776862_e866_46f5_aab0_2cf582494588"></a><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS AND INDUSTRY DATA</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">This Quarterly Report on Form&#160;10-Q contains forward-looking statements that involve substantial risks and uncertainties. All statements, other than statements of historical facts, contained in this Quarterly Report on Form&#160;10-Q, including statements regarding our strategy, future operations, future financial position, future revenue, projected costs, prospects, plans and objectives of management and expected market growth are forward-looking statements. The words &#8220;anticipate,&#8221; &#8220;believe,&#8221; &#8220;continue,&#8221; &#8220;could,&#8221; &#8220;estimate,&#8221; &#8220;expect,&#8221; &#8220;intend,&#8221; &#8220;may,&#8221; &#8220;plan,&#8221; &#8220;potential,&#8221; &#8220;predict,&#8221; &#8220;project,&#8221; &#8220;should,&#8221; &#8220;target,&#8221; &#8220;would&#8221; and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">These forward-looking statements include, among other things, statements about:</p><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:12pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">our expectations regarding the timing of our planned filing of an initial investigational new drug application, or IND, for our product candidate QLS-215 and the timing, nature, goals and results of our planned Phase 1 and Phase 1b/2 clinical trials of QLS-215, including that favorable results from the planned Phase 1 trial could establish proof of concept for the differentiation of QLS-215 as a potential treatment for hereditary angioedema, or HAE;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:12pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">our expectations about the unmet medical need for HAE, the potential differentiating attributes of QLS-215 as a potential treatment for HAE, along with the potential market impact of such differentiation, the potential of QLS-215 to be </span><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">the best-in-class and most patient-friendly chronic </span><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">treatment option for HAE, and the nature and anticipated growth of the global HAE market and HAE therapies;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:12pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">our expectations that pre-clinical data of QLS-215 may be replicated in clinical data;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:12pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">our expectations that the acquisition of Quellis Biosciences, Inc., or &#8220;Quellis&#8221;, may be an opportunity to create significant stockholder value;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:12pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">our expectations regarding our ability to expand our pipeline;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:12pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">the potential benefits of any future acquisition, in-license, collaboration or pre-clinical development activities;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:12pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">our commercialization, marketing and manufacturing plans, capabilities and strategy;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:12pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">our intellectual property position and strategy;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:12pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">our estimates regarding expenses, future revenue, capital requirements and needs for additional financing;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:12pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">our use of the proceeds from the private placement completed in February 2021;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:12pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">developments relating to our competitors and our industry; and</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">the impact of government laws and regulations.</span></td></tr></table><div style="margin-top:12pt;"></div><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:36pt;margin:0pt;">We may not actually achieve the plans, intentions or expectations disclosed in our forward-looking statements, and you should not place undue reliance on our forward-looking statements. Actual results or events could differ materially from the plans, intentions and expectations disclosed in the forward-looking statements we make as a result of various important factors, including risks and uncertainties&#160;related to our ability to recognize the anticipated benefits of the Quellis acquisition (as described below); the outcome of any legal proceedings that may be instituted against us or Quellis following the announcement of the acquisition and related transactions; changes in applicable laws or regulations; the possibility that we may be adversely affected by other economic, business, and/or competitive factors, including the COVID-19 pandemic; risks inherent in pharmaceutical research and development, such as adverse results in our drug discovery, preclinical and clinical development activities, the risk that the results of preclinical studies may not be replicated in clinical studies, our ability to enroll patients in our clinical trials, and the risk that any of our clinical trials may not commence, continue or be completed on time, or at all; decisions made by the U.S. Food and Drug Administration and other regulatory authorities, investigational review boards at clinical trial sites and other review bodies with respect to QLS-215 and any future product candidates; our ability to manufacture sufficient quantities of drug substance and drug product on a cost-effective and timely basis; our </p></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;">1</p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;">ability to obtain, maintain and enforce intellectual property rights for QLS-215 and any other future product candidates; competition with respect to QLS-215 or any other future product candidates or approved products; our ability to manage our cash usage and the possibility of unexpected cash expenditures; our ability to obtain necessary financing to conduct our planned activities and to manage unplanned cash requirements; and general economic and market conditions.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:36pt;margin:0pt;">We have included important factors in the cautionary statements included in our most recent Annual Report on Form&#160;10-K, particularly in the sections entitled &#8220;Summary of the Material Risks Associated with Our Business&#8221; and &#8220;Risk Factors&#8221;, that could cause actual results or events to differ materially from the forward-looking statements that we make. Our forward-looking statements do not reflect the potential impact of any future acquisitions, mergers, dispositions, collaborations, joint ventures or investments that we may make or enter into.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.28;margin:0pt;"><span style="font-weight:bold;line-height:1.19;visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.28;margin:0pt 0pt 8pt 0pt;"><span style="font-weight:bold;line-height:1.19;margin-bottom:0pt;visibility:hidden;">&#8203;</span></p></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;">2</p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><a id="_63b34e87_03d4_4326_8557_ef0ee34178f4"></a><a id="PARTIFINANCIALINFORMATION_707847"></a><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">PART I- FINANCIAL INFORMATION</b></p><a id="Item1FinancialStatements_973210"></a><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">Item 1. Financial Statements</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Catabasis Pharmaceuticals,&#160;Inc</b>.</p><a id="CondensedConsolidatedBalanceSheets_34177"></a><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Condensed Consolidated Balance Sheets</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt 0pt 12pt 0pt;">(In thousands, except share and per share data)</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><i style="font-style:italic;">(Unaudited)</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-style:italic;visibility:hidden;">&#8203;</span></p><a id="_fe9ebdf5_1045_419e_b78c_ee10cce3f831"></a><a id="Tc_6pIkwiIkCEm-v-yi-K0Y-A_1_2"></a><a id="Tc_uTqkvH3pckKXV16F3vqA5g_1_5"></a><a id="Tc_f7e-VmscsU26zjYjqwrMPg_2_2"></a><a id="Tc_B-8JnCr2gUmkzdUDzu_U_A_2_5"></a><a id="Tc_xCydfwQp-EmjuKQzfZ1J9w_3_0"></a><a id="Tc_B1e3wm4chEyy9Tlwwd9jOg_4_0"></a><a id="Tc_Vx-mQxX_eE2hDaefUafY-w_5_0"></a><a id="Tc_luUCAFpTvEGYGPtavmvAFw_5_2"></a><a id="Tc_YAS9RnUaQEGEKFUv4ud0yA_5_5"></a><a id="Tc_8vOgSAiyrke8qtEB1FnGAw_6_0"></a><a id="Tc_bOgJpUtrQ0OXrUAqYV3sKw_6_3"></a><a id="Tc_bfQD6Yj9WUOHgoQVS8tE3A_7_0"></a><a id="Tc_3_CrAj0yFUus8EclwDwUnA_8_0"></a><a id="Tc_y4W4PM0UAE6Hk-HoEETATg_9_0"></a><a id="Tc_2GKt2T-ZREaFIKwXkNN51w_10_0"></a><a id="Tc_ZccIjTV89UqSTbn2x5fZZQ_11_0"></a><a id="Tc_EPPXiYwI0E2JqD4mi5PoTg_11_2"></a><a id="Tc_X1BC6nge80mHvTLqua_JYg_11_5"></a><a id="Tc_WMhhV926kEmqO1RWRMv-Dw_12_0"></a><a id="Tc_6Cz-Wgwfe0WKf7dpLALAMQ_13_0"></a><a id="Tc_ux-1IvbYJU6o27_k5MWRbw_14_0"></a><a id="Tc_CsErOwxH50iIl2t5irApNw_14_2"></a><a id="Tc_7ln18qbA9Uy-rr_VZkYzoA_14_5"></a><a id="Tc_qA9FLpUUEkK7ysAyTYOa1g_15_0"></a><a id="Tc_n2oUPsBaRkWkYeMidc5HbQ_16_0"></a><a id="Tc_AY3gLmUPdUujlHxTNAeGMw_17_0"></a><a id="Tc_R-tvE1hj2E-T0s2x11Vz8A_18_0"></a><a id="Tc_vQU-yCrwcU-yIhN4KHPPiw_19_0"></a><a id="Tc_-4YawvUKa0ulMu7nLDfTpA_20_0"></a><a id="Tc_o2ptTfgNXkuSiLgw8adFyg_21_0"></a><a id="Tc_vArkyakRBk6ua-xf2UO-6w_22_0"></a><a id="Tc_qTGprg-SMUWOCjNGR9sWuw_22_6"></a><a id="Tc_FU1Ag-Sg30CJouyEzi677g_23_0"></a><a id="Tc_OkyjqpSjbUuFS5ayowiiSw_24_0"></a><a id="Tc_VV772ISEcU2dfpQb7ou2YQ_25_0"></a><a id="Tc_dxooqdGAMEWM_Sa9_RGoBw_26_0"></a><a id="Tc_Siw6wMf5OESPG3eIAqRx3Q_27_0"></a><a id="Tc_0BNF2Tog6k-n1Llr60iHKQ_27_2"></a><a id="Tc_sNDoqoUq_0-cZ1zDCF-XUQ_27_5"></a><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:69.14%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:11.86%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;white-space:nowrap;width:69.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:13.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">June&#160;30,&#160;</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:13.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">December&#160;31,&#160;</b></p></td></tr><tr><td style="vertical-align:bottom;white-space:nowrap;width:69.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:13.25%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2021</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:13.24%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2020</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:69.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt;"><b style="font-weight:bold;">Assets</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:69.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt;">Current assets:</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:69.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt 0pt 0pt 6pt;">Cash and cash equivalents</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:CashAndCashEquivalentsAtCarryingValue" scale="3" id="Tc_NvmaYlNaY0CWiPjOb6v32g_5_3">139,520</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:CashAndCashEquivalentsAtCarryingValue" scale="3" id="Tc_eU10vo02vUqQJ40f2Yx5XA_5_6">24,930</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:69.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt 0pt 0pt 6pt;">Short-term investments</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:ShortTermInvestments" scale="3" id="Tc_kCNjG9HqmkCzgo2Bp4CLhA_6_6">20,000</ix:nonFraction></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:69.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt 0pt 0pt 6pt;">Prepaid expenses and other current assets</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.87%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:PrepaidExpenseAndOtherAssetsCurrent" scale="3" id="Tc_lCb4b0_T5ki-qCHkqf8OJQ_7_3">532</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.86%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:PrepaidExpenseAndOtherAssetsCurrent" scale="3" id="Tc_L-95QdJNKkKpqsq9m4C2Ew_7_6">1,395</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:69.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt;">Total current assets</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:AssetsCurrent" scale="3" id="Tc_qddEWkYRcUawnSDhSZ1nYw_8_3">140,052</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:AssetsCurrent" scale="3" id="Tc_VNrcaNQzdESv4-5Rjgnr3Q_8_6">46,325</ix:nonFraction></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:69.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt;">Right-of-use asset</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OperatingLeaseRightOfUseAsset" scale="3" id="Tc_sSklrMiqXEudoaaZBba_bQ_9_3">717</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OperatingLeaseRightOfUseAsset" scale="3" id="Tc_dz-_-6nJhkq-hYfbZ_DGrA_9_6">966</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:69.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt;">Other assets</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.87%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OtherAssetsNoncurrent" scale="3" id="Tc_RK_JHHex5kyO1OJkvHo8zg_10_3">176</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.86%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OtherAssetsNoncurrent" scale="3" id="Tc_fVTIcXEDRk6evoBgNuAGzg_10_6">165</ix:nonFraction></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:69.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt;">Total assets</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.87%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:Assets" scale="3" id="Tc_4ND89Dp8WkWnqng37-Gqag_11_3">140,945</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.86%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:Assets" scale="3" id="Tc_JUCJ-jsMF0a9QGJZAdsREQ_11_6">47,456</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:69.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt;"><b style="font-weight:bold;">Liabilities and stockholders&#8217; equity </b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"> <span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:69.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt;">Current liabilities:</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"> <span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:69.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt 0pt 0pt 6pt;">Accounts payable</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:AccountsPayableCurrent" scale="3" id="Tc_OQLkLhF_qkGCNSwRZ8YbCQ_14_3">619</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:AccountsPayableCurrent" scale="3" id="Tc_-RwYPEC3lk-DIR7OwPhzcQ_14_6">1,544</ix:nonFraction></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:69.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt 0pt 0pt 6pt;">Accrued expenses</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:AccruedLiabilitiesCurrent" scale="3" id="Tc_L2VJng_mfEysCOe_ct-N6w_15_3">2,714</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:AccruedLiabilitiesCurrent" scale="3" id="Tc_xaJSv-PMak2NEKyAEjtFBg_15_6">4,197</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:69.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt 0pt 0pt 6pt;">Current portion of operating lease liabilities</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.87%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OperatingLeaseLiabilityCurrent" scale="3" id="Tc_zoRkUhUMpkKPZ1eR1oWe5Q_16_3">655</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.86%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OperatingLeaseLiabilityCurrent" scale="3" id="Tc_Lg2UeNZtZ0GaFv2LFEZhlQ_16_6">649</ix:nonFraction></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:69.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt;">Total current liabilities</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.87%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:LiabilitiesCurrent" scale="3" id="Tc_xOwMuTDirUCWu4JcDcJnzQ_17_3">3,988</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.86%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:LiabilitiesCurrent" scale="3" id="Tc_lGucPVIZW0SBmaX0nZEXNA_17_6">6,390</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:69.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt;">Long-term portion of operating lease liabilities</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.87%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OperatingLeaseLiabilityNoncurrent" scale="3" id="Tc_1vvMPI7dYEq8B68Us5rJuQ_18_3">58</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.86%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OperatingLeaseLiabilityNoncurrent" scale="3" id="Tc_fNIKlyeR70aA0rDd0uyuHw_18_6">397</ix:nonFraction></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:69.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt;">Total liabilities</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:Liabilities" scale="3" id="Tc_ru4n5KYr90Cs9JzFFNB2zg_19_3">4,046</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:Liabilities" scale="3" id="Tc_h-2aknteaUSijMQ4cqKm0w_19_6">6,787</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:69.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt;">Commitments</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:69.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt;">Stockholders&#8217; equity:</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:69.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt 0pt 0pt 6pt;">Series X redeemable convertible preferred stock, $<ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="As_Of_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_7RZZjXZTlEWngOvK16UXcg" decimals="3" format="ixt:numdotdecimal" name="us-gaap:PreferredStockParOrStatedValuePerShare" scale="0" id="Narr_7w_oY0ktB0CxBmwNX4uL_w">0.001</ix:nonFraction> par value per share, <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_7RZZjXZTlEWngOvK16UXcg" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:PreferredStockSharesAuthorized" scale="0" id="Narr_EUwOJELLgUigIni1PNvVhA">37,848</ix:nonFraction> shares authorized; <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_7RZZjXZTlEWngOvK16UXcg" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:PreferredStockSharesIssued" scale="0" id="Narr_FJAIn1pmuUqxraVUD3dS5A">32,545</ix:nonFraction> shares issued and <span style="-sec-ix-hidden:Hidden_Yt9drNw0pk6Yd2-TLDmCAg;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">outstanding</span></span> as of June 30, 2021 and <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_12_31_2020_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_TP70mS_KaUi2NhZXfRXeBg" decimals="INF" format="ixt-sec:numwordsen" name="us-gaap:PreferredStockSharesIssued" scale="0" id="Narr_H-Gx88P_bkK0cZ-Ef5iX1Q">no</ix:nonFraction> shares issued and <span style="-sec-ix-hidden:Hidden_c-IsNhHlmUG3acCN64qkLg;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">outstanding</span></span> as of December 31, 2020</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_7RZZjXZTlEWngOvK16UXcg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:PreferredStockValue" scale="3" id="Tc_56CE6dWkCUm-lLoW9VVAGg_22_3">99,770</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:69.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt 0pt 0pt 6pt;">Common stock, $<ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:CommonStockParOrStatedValuePerShare" scale="0" id="Narr_-6h8fg1KEEenXLnoL4gVxQ"><ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:CommonStockParOrStatedValuePerShare" scale="0" id="Narr_vpBYz54rg0Cha0mKwmzckQ">0.001</ix:nonFraction></ix:nonFraction> par value per share, <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:CommonStockSharesAuthorized" scale="0" id="Narr_B_k5ynAldUGAzOZ0rQGofg"><ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:CommonStockSharesAuthorized" scale="0" id="Narr_hqpeh3y-L06wMj-Ntvtvvg">150,000,000</ix:nonFraction></ix:nonFraction> shares authorized; <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:CommonStockSharesIssued" scale="0" id="Narr_TGdbypK5nUO1btpciBob0A">76,948,803</ix:nonFraction> and <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:CommonStockSharesIssued" scale="0" id="Narr_5ThcA2dUoUaERbrziuaxUQ">20,084,337</ix:nonFraction> shares issued and <span style="-sec-ix-hidden:Hidden_Ntdp2ofLpky5vf0htsAstw;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">outstanding</span></span> at June 30, 2021 and <span style="-sec-ix-hidden:Hidden_15URWZR9uUyfAa4dzKevsQ;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">December 31, 2020</span></span>, respectively</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:CommonStockValue" scale="3" id="Tc_sNU2RuSCjEOSbwpyqYXf-g_23_3">77</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:CommonStockValue" scale="3" id="Tc_ScrEI6a8o0aCUg0fpB0GKQ_23_6">20</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:69.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt 0pt 0pt 6pt;">Additional paid-in capital</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:AdditionalPaidInCapital" scale="3" id="Tc_GpsPqjBFC0a8EmXk-6r4sw_24_3">475,499</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:AdditionalPaidInCapital" scale="3" id="Tc_1yJowCsOwkSCCZ_cYDxeGQ_24_6">301,546</ix:nonFraction></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:69.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt 0pt 0pt 6pt;">Accumulated deficit</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.87%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:RetainedEarningsAccumulatedDeficit" sign="-" scale="3" id="Tc_4ZzWRQv4AkiEOhpOwVgMbw_25_3">438,447</ix:nonFraction>)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.86%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:RetainedEarningsAccumulatedDeficit" sign="-" scale="3" id="Tc_Ng5vcaVfiUSpkHIGsiwZkg_25_6">260,897</ix:nonFraction>)</p></td></tr><tr><td style="vertical-align:bottom;width:69.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt;">Total stockholders&#8217; equity </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.87%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" scale="3" id="Tc_d4TTkGK8LEyxLm1kbnC-Hg_26_3">136,899</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.86%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" scale="3" id="Tc_waF7pndDe0mcNSqMxnbXDA_26_6">40,669</ix:nonFraction></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:69.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt;">Total liabilities and stockholders&#8217; equity </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.87%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:LiabilitiesAndStockholdersEquity" scale="3" id="Tc_gFPtXz74nkSyT0p2G3b4Ow_27_3">140,945</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.86%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:LiabilitiesAndStockholdersEquity" scale="3" id="Tc_fDiTEQoKe0uO8wVPEOc67w_27_6">47,456</ix:nonFraction></p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><i style="font-style:italic;">The accompanying notes are an integral part of these condensed consolidated financial statements.</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-style:italic;visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-weight:bold;visibility:hidden;">&#8203;</span></p></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;">3</p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><a id="_85a13c98_a6d9_4d12_bfe0_963aa718e0ee"></a><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Catabasis Pharmaceuticals,&#160;Inc</b>.</p><a id="CondensedConsolidatedStatementsofOperati"></a><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Condensed Consolidated Statements of Operations</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt 0pt 12pt 0pt;">(In thousands, except share and per share data)</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><i style="font-style:italic;">(Unaudited)</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-style:italic;visibility:hidden;">&#8203;</span></p><a id="_fda2cb67_ba10_4591_81a0_6c0ab8723337"></a><a id="Tc_WWvVhQ1tE0eq5vGVycNOtQ_1_2"></a><a id="Tc_Lg2Xyl1d3ka-565I1aAd7w_1_8"></a><a id="Tc_xJ3m9jXCxUmbyNqf-roPnA_2_2"></a><a id="Tc_LFeBxXuKLk2zw87mQxwkug_2_5"></a><a id="Tc_pVVBsnqtokeQHJrPrptcng_2_8"></a><a id="Tc_81Hp_wQYXkqek56ijnaaGg_2_11"></a><a id="Tc_DbqPwAT7B064o0pO_nPPmw_3_0"></a><a id="Tc_4svb6_iaTkW4JzD6vW8XVQ_4_0"></a><a id="Tc_py6FWGEnq0-VZXS3HZMwow_4_2"></a><a id="Tc_lBu6Rk0WWUu_przCszPwvw_4_5"></a><a id="Tc_RAirzrJRGEaWI-NFgMNqeQ_4_8"></a><a id="Tc_-0h7VP79RkaykghM-tXlLg_4_11"></a><a id="Tc_xA3YjsUKME-zSBn3O8Gl-g_5_0"></a><a id="Tc_Mh3pa7MRGkCTEMbWLIl5jg_6_0"></a><a id="Tc_gwcqD-mFqUa1yCNcSS_Erw_6_3"></a><a id="Tc_o8tLE3sKE0qfXTosfEgbjg_6_6"></a><a id="Tc_4t69QfcX5UqZ4amQkEoRbQ_6_12"></a><a id="Tc_SylFivNlwEiU-OfVffRBJg_7_0"></a><a id="Tc_BfZ34vOFp0OCQyobVL06kg_8_0"></a><a id="Tc_sIlPxxxMm0axR8PnqsCOqg_9_0"></a><a id="Tc_Yltybixya0WNnLad71s4iQ_10_0"></a><a id="Tc_0_LYIGMNi0yggSVff5c7dA_11_0"></a><a id="Tc_3IXXZEOWBUeB_UHZWlQPIw_12_0"></a><a id="Tc_fNZbfxAoLkSXmXk6V9EkUQ_13_0"></a><a id="Tc_szDOzteK80KtFKonmsctFA_14_0"></a><a id="Tc_V0l-vvKvX06-gxJH_xC3dw_14_6"></a><a id="Tc_3cSOpv6QeUSozlBhOW5zeQ_14_12"></a><a id="Tc_3yRxUu7W20egd5l107_K4A_15_0"></a><a 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style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.88%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.63%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.88%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.63%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:53.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td colspan="5" style="vertical-align:bottom;white-space:nowrap;width:21.86%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Three Months Ended June&#160;30,&#160;</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td colspan="5" style="vertical-align:bottom;white-space:nowrap;width:21.86%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Six Months Ended June&#160;30,&#160;</b></p></td></tr><tr><td style="vertical-align:bottom;width:53.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:9.81%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2021</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.56%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2020</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:9.81%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2021</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.56%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2020</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:53.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt;">Operating expenses:</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:53.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt 0pt 0pt 6pt;">Research and development</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2021_To_6_30_2021_kx8QL4DTb0WVYbWubcZAtw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:ResearchAndDevelopmentExpense" scale="3" id="Tc_D7ix_HThyEu3ohsEDeCASw_4_3">3,478</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2020_To_6_30_2020_04iw0agT7keyAw-CRtUsXg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:ResearchAndDevelopmentExpense" scale="3" id="Tc_fg7UqV7F40KOkjKJCYjDOQ_4_6">6,750</ix:nonFraction></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:ResearchAndDevelopmentExpense" scale="3" id="Tc_32liZQWxNk-K40rD8NWlUQ_4_9">6,071</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:ResearchAndDevelopmentExpense" scale="3" id="Tc_0M8vwgnW7UWQXIcwSK_1yQ_4_12">12,039</ix:nonFraction></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:53.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt 0pt 0pt 6pt;">General and administrative</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2021_To_6_30_2021_kx8QL4DTb0WVYbWubcZAtw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:GeneralAndAdministrativeExpense" scale="3" id="Tc_AK-1iy08hk6oJB4mTMmLAg_5_3">4,008</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2020_To_6_30_2020_04iw0agT7keyAw-CRtUsXg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:GeneralAndAdministrativeExpense" scale="3" id="Tc_xSabRvbaWEa45CvaXHU-SQ_5_6">2,803</ix:nonFraction></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:GeneralAndAdministrativeExpense" scale="3" id="Tc_cCVO6niS4UKR4iOb-gPshQ_5_9">6,881</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:GeneralAndAdministrativeExpense" scale="3" id="Tc_gz8Zhjk29UqLNQ4iPK1-Nw_5_12">5,555</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:53.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt 0pt 0pt 6pt;">Acquired in-process research and development</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.88%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.63%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.88%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="catb:AcquiredInProcessResearchAndDevelopment" scale="3" id="Tc_3qBHvpd8nEilHn_QuaMCHw_6_9">164,617</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.63%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:53.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt 0pt 0pt 12pt;">Total operating expenses</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.88%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2021_To_6_30_2021_kx8QL4DTb0WVYbWubcZAtw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OperatingExpenses" scale="3" id="Tc_jKiPkmeYO0yKu5QGrmZghg_7_3">7,486</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.63%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2020_To_6_30_2020_04iw0agT7keyAw-CRtUsXg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OperatingExpenses" scale="3" id="Tc_eTjyKpv6PE2RheSaB0azOA_7_6">9,553</ix:nonFraction></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.88%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OperatingExpenses" scale="3" id="Tc_n8jDBJSpP06ybtMYQ95RdA_7_9">177,569</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.63%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OperatingExpenses" scale="3" id="Tc_MxigierguU6E8kiXFGwCVg_7_12">17,594</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:53.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt;">Loss from operations</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2021_To_6_30_2021_kx8QL4DTb0WVYbWubcZAtw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OperatingIncomeLoss" sign="-" scale="3" id="Tc_Vz598T-xPkK0MWaLrbeHoQ_8_3">7,486</ix:nonFraction>)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2020_To_6_30_2020_04iw0agT7keyAw-CRtUsXg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OperatingIncomeLoss" sign="-" scale="3" id="Tc_zj5zbBS7g0G4L5K_9ALUBw_8_6">9,553</ix:nonFraction>)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OperatingIncomeLoss" sign="-" scale="3" id="Tc_JZAHQMu8l0WBmacE-V-Etw_8_9">177,569</ix:nonFraction>)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OperatingIncomeLoss" sign="-" scale="3" id="Tc_VBaT5bC8NEyItzYYz8nU_A_8_12">17,594</ix:nonFraction>)</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:53.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt;">Other income (expense):</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:53.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt 0pt 0pt 6pt;">Interest and investment income</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2021_To_6_30_2021_kx8QL4DTb0WVYbWubcZAtw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:InvestmentIncomeInterest" scale="3" id="Tc_uFevWEpxHEGWxsi_0gpt8w_10_3">40</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2020_To_6_30_2020_04iw0agT7keyAw-CRtUsXg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:InvestmentIncomeInterest" scale="3" id="Tc_opNoC3LR3ESxKRw_uMw6HA_10_6">60</ix:nonFraction></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:InvestmentIncomeInterest" scale="3" id="Tc_YI3wlMhl20uhRDPkdsWL1w_10_9">53</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:InvestmentIncomeInterest" scale="3" id="Tc_3pUKz_pMmE61nCT9F8NUXA_10_12">227</ix:nonFraction></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:53.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt 0pt 0pt 6pt;">Other expense, net</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.88%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2021_To_6_30_2021_kx8QL4DTb0WVYbWubcZAtw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OtherNonoperatingIncomeExpense" sign="-" scale="3" id="Tc_JrFdig9T4UK6NSE6dSjujQ_11_3">20</ix:nonFraction>)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.63%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2020_To_6_30_2020_04iw0agT7keyAw-CRtUsXg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OtherNonoperatingIncomeExpense" sign="-" scale="3" id="Tc_Xz5Raepek0iWgag9XEoL7A_11_6">15</ix:nonFraction>)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.88%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OtherNonoperatingIncomeExpense" sign="-" scale="3" id="Tc_smiL-4EVaUu6rpcAqe3H3A_11_9">34</ix:nonFraction>)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.63%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OtherNonoperatingIncomeExpense" sign="-" scale="3" id="Tc_NsIlP8ZwWUeDPh1GhLYhhw_11_12">93</ix:nonFraction>)</p></td></tr><tr><td style="vertical-align:bottom;width:53.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt 0pt 0pt 12pt;">Total other income, net</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.88%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2021_To_6_30_2021_kx8QL4DTb0WVYbWubcZAtw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:NonoperatingIncomeExpense" scale="3" id="Tc_kPrAwJQ7OEGRrREvdclejA_12_3">20</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.63%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2020_To_6_30_2020_04iw0agT7keyAw-CRtUsXg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:NonoperatingIncomeExpense" scale="3" id="Tc_ApYQc1nz4kGot9lo4uDS9Q_12_6">45</ix:nonFraction></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.88%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:NonoperatingIncomeExpense" scale="3" id="Tc_yiYUS33iEEeFrPUITeQzIQ_12_9">19</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.63%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:NonoperatingIncomeExpense" scale="3" id="Tc_I-vzdz3-ekG_T4dlUBn3YA_12_12">134</ix:nonFraction></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:53.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt;">Net loss</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2021_To_6_30_2021_kx8QL4DTb0WVYbWubcZAtw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:NetIncomeLoss" sign="-" scale="3" id="Tc_XXTxzmsfv0aF_iFt-SP4Hw_13_3">7,466</ix:nonFraction>)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2020_To_6_30_2020_04iw0agT7keyAw-CRtUsXg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:NetIncomeLoss" sign="-" scale="3" id="Tc_pzOCb8PWKEenobRClznw4w_13_6">9,508</ix:nonFraction>)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:NetIncomeLoss" sign="-" scale="3" id="Tc_hH7F26wUAka5dfl8k7cfqA_13_9">177,550</ix:nonFraction>)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:NetIncomeLoss" sign="-" scale="3" id="Tc_vvZhz5z8AkKNWbHJ50ZHIQ_13_12">17,460</ix:nonFraction>)</p></td></tr><tr><td style="vertical-align:bottom;width:53.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt;">Dividend on convertible preferred stock related to beneficial conversion feature and issuance costs</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.88%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2021_To_6_30_2021_kx8QL4DTb0WVYbWubcZAtw" decimals="-3" format="ixt:numdotdecimal" name="catb:DividendOnConvertiblePreferredStockRelatedToBeneficialConversionFeatureAndIssuanceCosts" scale="3" id="Tc_GGxm3KjjEkKiOHlfOi3DMA_14_3">24,437</ix:nonFraction>)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.63%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.88%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="catb:DividendOnConvertiblePreferredStockRelatedToBeneficialConversionFeatureAndIssuanceCosts" scale="3" id="Tc_Cjxv_Ailx0yb59MYE2spfA_14_9">24,437</ix:nonFraction>)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.63%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:53.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt;">Net loss attributable to common shareholders</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.88%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2021_To_6_30_2021_kx8QL4DTb0WVYbWubcZAtw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic" sign="-" scale="3" id="Tc_Zr5LU6BQDkKE2wzKn3zIDA_15_3">31,903</ix:nonFraction>)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.63%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2020_To_6_30_2020_04iw0agT7keyAw-CRtUsXg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic" sign="-" scale="3" id="Tc_l485mZ2jW0OohRO_2muCoQ_15_6">9,508</ix:nonFraction>)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.88%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic" sign="-" scale="3" id="Tc_iWTwR5mTXUK0IMQcSlYgFA_15_9">201,987</ix:nonFraction>)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.63%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic" sign="-" scale="3" id="Tc_5ZiclmShm0mC8w2ablzwVQ_15_12">17,460</ix:nonFraction>)</p></td></tr><tr><td style="vertical-align:bottom;width:53.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt;">Net loss per share - basic and diluted</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.88%;border-bottom:3px double #000000;border-top:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(<ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="Duration_4_1_2021_To_6_30_2021_kx8QL4DTb0WVYbWubcZAtw" decimals="2" format="ixt:numdotdecimal" name="us-gaap:EarningsPerShareBasicAndDiluted" sign="-" scale="0" id="Tc_7z88CmuaWEmdQ0pN-cbxjw_16_3">0.89</ix:nonFraction>)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.63%;border-bottom:3px double #000000;border-top:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (<ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="Duration_4_1_2020_To_6_30_2020_04iw0agT7keyAw-CRtUsXg" decimals="2" format="ixt:numdotdecimal" name="us-gaap:EarningsPerShareBasicAndDiluted" sign="-" scale="0" id="Tc_Q3xVhUmMA0Wweui4-n-7ow_16_6">0.53</ix:nonFraction>)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.88%;border-bottom:3px double #000000;border-top:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(<ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="2" format="ixt:numdotdecimal" name="us-gaap:EarningsPerShareBasicAndDiluted" sign="-" scale="0" id="Tc_-0tFtVDN1Umlt7y1EEgXCw_16_9">6.93</ix:nonFraction>)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.63%;border-bottom:3px double #000000;border-top:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (<ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="2" format="ixt:numdotdecimal" name="us-gaap:EarningsPerShareBasicAndDiluted" sign="-" scale="0" id="Tc_XHvz-3M1M0mkjN1rKaDIlA_16_12">1.03</ix:nonFraction>)</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:53.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt;">Weighted-average common shares outstanding used in net loss per share - basic and diluted</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.88%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_4_1_2021_To_6_30_2021_kx8QL4DTb0WVYbWubcZAtw" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted" scale="0" id="Tc_aWidN8RLY0uKepr2ot9-zw_17_3">35,880,580</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.63%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_4_1_2020_To_6_30_2020_04iw0agT7keyAw-CRtUsXg" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted" scale="0" id="Tc_T1sb1r_4RUejpQ0gJHe_NQ_17_6">17,967,495</ix:nonFraction></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.88%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted" scale="0" id="Tc_cUf89AHb106P0Kxl-uMpKg_17_9">29,167,672</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.92%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.63%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted" scale="0" id="Tc_5sn-AD62mEWxiE-J2KgloQ_17_12">16,933,079</ix:nonFraction></p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><i style="font-style:italic;">The accompanying notes are an integral part of these condensed consolidated financial statements.</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.28;margin:0pt 0pt 8pt 0pt;"><span style="font-style:italic;line-height:1.19;margin-bottom:0pt;visibility:hidden;">&#8203;</span></p></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;">4</p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><a id="_9e654105_30d0_4054_8700_9967bb91d77e"></a><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Catabasis Pharmaceuticals, Inc</b>.</p><a id="CondensedConsolidatedStatementsofCompreh"></a><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Condensed Consolidated Statements of Comprehensive Loss</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt 0pt 12pt 0pt;">(In thousands)</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><i style="font-style:italic;">(Unaudited)</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-style:italic;visibility:hidden;">&#8203;</span></p><a id="_4f4cd45b_eb01_49a0_b249_8d8446c137b3"></a><a id="Tc_Gp6wjzgpAUOtImJmyhDeOQ_1_2"></a><a id="Tc_-pd2gFiZ7kCGSUaIQtCYSg_1_8"></a><a id="Tc_CU7h499B30ymHeDYaO60ww_2_2"></a><a id="Tc_758_upL07ki-xzLJigN7vg_2_5"></a><a id="Tc_SGiZanhd70mOfcOsI4Q2fg_2_8"></a><a id="Tc_hx_rsBC6PkygSQisbu6jUw_2_11"></a><a id="Tc_S8iJmGXIO0-sxTRVFN0HTg_3_0"></a><a id="Tc_eJ69pjkAFkS0MXqDJ9EAGA_3_2"></a><a id="Tc_IieU1ZnWCk6ewysouCelmQ_3_5"></a><a id="Tc_eOOd10vn4062_WdokbUVeA_3_8"></a><a id="Tc_-zqFp1th0EOSG0LMFDgo_A_3_11"></a><a id="Tc_cOgQkTUd2kWY4O36olny_A_4_0"></a><a id="Tc_RiC0mSaX3Uidirs5PzMVUg_5_0"></a><a id="Tc_ujbKtNrfGEa71xo0D2oH5A_5_3"></a><a id="Tc_e9NxKig2-UmFddNoy-7VEQ_5_9"></a><a id="Tc_-48eFTqPy0-Y2W_16H7OjA_6_0"></a><a id="Tc_QJADaSyD_E2BaHA3_KrlWQ_6_3"></a><a id="Tc_rW5G0iUWkU6pyvPziAKAtQ_6_9"></a><a id="Tc_m-xj0WtY8UiC63f17xnJzg_7_0"></a><a id="Tc_YQk9VT3vjUiru-xtDCgZ0Q_7_2"></a><a id="Tc_NhGvgfVbHkqL2BrJ-mPqHA_7_5"></a><a id="Tc_1d54idAWAk2r9oVR4ryzYQ_7_8"></a><a id="Tc_znt-OG7ZP0a6WMZrejBPZw_7_11"></a><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:58.38%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.65%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:7.6%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.91%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:7.55%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.65%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.67%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:7.1%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:58.38%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td colspan="5" style="vertical-align:bottom;white-space:nowrap;width:19.51%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Three Months Ended June&#160;30,&#160;</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;</p></td><td colspan="5" style="vertical-align:bottom;white-space:nowrap;width:18.77%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Six Months Ended June&#160;30,&#160;</b></p></td></tr><tr><td style="vertical-align:bottom;width:58.38%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:8.82%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2021</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:8.77%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2020</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:9%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2021</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.67%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:8.1%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2020</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.38%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Net loss</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2021_To_6_30_2021_kx8QL4DTb0WVYbWubcZAtw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:NetIncomeLoss" sign="-" scale="3" id="Tc_qPAqunZrxkWvdbFVDrCjlA_3_3">7,466</ix:nonFraction>)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2020_To_6_30_2020_04iw0agT7keyAw-CRtUsXg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:NetIncomeLoss" sign="-" scale="3" id="Tc_ZWc_KF6Pok66imPVAoMdhw_3_6">9,508</ix:nonFraction>)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:NetIncomeLoss" sign="-" scale="3" id="Tc_JbBE_pFb0EKXcuICkBT6ww_3_9">177,550</ix:nonFraction>)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.67%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.1%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:NetIncomeLoss" sign="-" scale="3" id="Tc_mbRFXbuCykiNgh_ljdShIw_3_12">17,460</ix:nonFraction>)</p></td></tr><tr><td style="vertical-align:bottom;width:58.38%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Other comprehensive gain:</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:8%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.67%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.1%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.38%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;">Gain on short-term investments</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.55%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2020_To_6_30_2020_04iw0agT7keyAw-CRtUsXg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax" scale="3" id="Tc_eX3E_WG6XU-U7YTb5YASAQ_5_6">16</ix:nonFraction></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.67%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.1%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax" scale="3" id="Tc_1i6vrCtHLkWxDFkslG4H7g_5_12">1</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:58.38%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Total other comprehensive gain:</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.6%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.55%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2020_To_6_30_2020_04iw0agT7keyAw-CRtUsXg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" scale="3" id="Tc_K1lRJxpet0evKOXfY4mlow_6_6">16</ix:nonFraction></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:8%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.67%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.1%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" scale="3" id="Tc_Z9ML9h34TkCxwHnTuxgMew_6_12">1</ix:nonFraction></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.38%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Comprehensive loss</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.6%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2021_To_6_30_2021_kx8QL4DTb0WVYbWubcZAtw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:ComprehensiveIncomeNetOfTax" sign="-" scale="3" id="Tc_zvsi5G0uEkazdcu2Pzk2Rw_7_3">7,466</ix:nonFraction>)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.55%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2020_To_6_30_2020_04iw0agT7keyAw-CRtUsXg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:ComprehensiveIncomeNetOfTax" sign="-" scale="3" id="Tc_7YdT0nqb8U25_mO5XJlmAw_7_6">9,492</ix:nonFraction>)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:ComprehensiveIncomeNetOfTax" sign="-" scale="3" id="Tc_kNasKLSpNEeT4mFCjAbbNQ_7_9">177,550</ix:nonFraction>)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.67%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.1%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:ComprehensiveIncomeNetOfTax" sign="-" scale="3" id="Tc_Cd0TnHfXcE-3CtvdpdvgoA_7_12">17,459</ix:nonFraction>)</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><i style="font-style:italic;">The accompanying notes are an integral part of these condensed consolidated financial statements</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.28;margin:0pt 0pt 8pt 0pt;"><span style="font-weight:bold;line-height:1.19;margin-bottom:0pt;visibility:hidden;">&#8203;</span></p></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;">5</p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><a id="_43ffb702_9b49_48bd_81d3_311608219092"></a><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.28;text-align:center;margin:0pt;"><b style="font-weight:bold;">Catabasis Pharmaceuticals, Inc</b>.</p><a id="CondensedConsolidatedStatementsofRedeema"></a><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.28;text-align:center;margin:0pt;"><b style="font-weight:bold;">Condensed Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders&#8217; Equity</b></p><a id="_762386"></a><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;">(In thousands, except shares)<i style="font-style:italic;">(Unaudited)</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-style:italic;visibility:hidden;">&#8203;</span></p><a id="_dd94d9f6_4d7e_4f0f_a516_4156050a81ed"></a><a id="Tc_3rbq7h15IUGkLSfutpaz2g_1_2"></a><a id="Tc_QvP97n5yTkuu9erj5E9RUw_1_8"></a><a id="Tc_spG40i0uAkajQKQHAxXJLw_2_2"></a><a id="Tc_Ue6Hx85PFEuFLlUIEXzIbA_2_5"></a><a id="Tc_0-OKsXtnJUG_wzlQBlbAFw_2_8"></a><a id="Tc_fFCZJkOnJ0yel5xSmkz7HA_2_11"></a><a id="Tc_Vc0BFB3n2UehoZKpiqQbNg_3_0"></a><a 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style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="5" style="vertical-align:bottom;white-space:nowrap;width:19.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-size:7.5pt;font-weight:bold;">Three Months Ended June&#160;30,&#160;</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="5" style="vertical-align:bottom;white-space:nowrap;width:18.77%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-size:7.5pt;font-weight:bold;">Six Months Ended June&#160;30,&#160;</b></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-size:7.5pt;font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:8.45%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-size:7.5pt;font-weight:bold;">2021</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-size:7.5pt;font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:8.86%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-size:7.5pt;font-weight:bold;">2020</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-size:7.5pt;font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:8.45%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-size:7.5pt;font-weight:bold;">2021</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-size:7.5pt;font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:8.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-size:7.5pt;font-weight:bold;">2020</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><b style="font-size:7.5pt;font-weight:bold;">Series X redeemable convertible preferred stock, shares</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Balance, beginning of period</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_3_31_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_O8eKmIdCYEWw-dTBmEw1Xg" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:TemporaryEquitySharesIssued" scale="0" id="Tc_uPUPuRKK10CCpqdLmpLkqQ_4_3">86,077</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_12_31_2020_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_TP70mS_KaUi2NhZXfRXeBg" decimals="INF" format="ixt:zerodash" name="us-gaap:TemporaryEquitySharesIssued" scale="0" id="Tc_D3LBpkw5t0uH-FWjLpLETA_4_9">&#8212;</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Issuance of preferred stock in a private offering of public equity, net of issuance costs</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_hnAIlARiS0SvE8CT-59I0g" decimals="INF" format="ixt:numdotdecimal" name="catb:TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodSharesNewIssues" scale="0" id="Tc_5nonvQ9VQ0uFzQXFk7aLmQ_5_9">35,573</ix:nonFraction></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Issuance of preferred stock upon acquisition of Quellis</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_hnAIlARiS0SvE8CT-59I0g" decimals="INF" format="ixt:numdotdecimal" name="catb:TemporaryEquityStockIssuedInAcquisitionSharesNewIssues" scale="0" id="Tc_k1LC8ilFVEGFBdornuDq2A_6_9">50,504</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Reclassification of preferred stock to permanent equity</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> (<ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_4_1_2021_To_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_m2CQkUu3KEmX0L8QMV0Okw" decimals="INF" format="ixt:numdotdecimal" name="catb:ReclassificationOfPreferredStockToEquityShares" scale="0" id="Tc_8vNpR0_rqEiAd1DKUGJVGA_7_3">86,077</ix:nonFraction>)</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> (<ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_hnAIlARiS0SvE8CT-59I0g" decimals="INF" format="ixt:numdotdecimal" name="catb:ReclassificationOfPreferredStockToEquityShares" scale="0" id="Tc_E7kRd7H6KE2b2mAlJVqE6w_7_9">86,077</ix:nonFraction>)</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Balance, end of period</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_7RZZjXZTlEWngOvK16UXcg" decimals="INF" format="ixt:zerodash" name="us-gaap:TemporaryEquitySharesIssued" scale="0" id="Tc_nKVlZHE_lUeFEOf71cPJRw_8_3">&#8212;</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_7RZZjXZTlEWngOvK16UXcg" decimals="INF" format="ixt:zerodash" name="us-gaap:TemporaryEquitySharesIssued" scale="0" id="Tc_cOBZtkq1zE6NZGHM-H9RVg_8_9">&#8212;</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><b style="font-size:7.5pt;font-weight:bold;">Series X redeemable convertible preferred stock, value </b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Balance, beginning of period</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_3_31_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_O8eKmIdCYEWw-dTBmEw1Xg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:TemporaryEquityCarryingAmountAttributableToParent" scale="3" id="Tc_QNvtGdlWbkmDCaQ4JqxuAg_10_3">240,881</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_TP70mS_KaUi2NhZXfRXeBg" decimals="-3" format="ixt:zerodash" name="us-gaap:TemporaryEquityCarryingAmountAttributableToParent" scale="3" id="Tc_BOubyq5Rv0yy4v6TSG1cxg_10_9">&#8212;</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Issuance of preferred stock in a private offering of public equity, net of issuance costs</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_hnAIlARiS0SvE8CT-59I0g" decimals="-3" format="ixt:numdotdecimal" name="catb:TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodValueNewIssues" scale="3" id="Tc_S0EgPJJO8UKmcaJIegSPZg_11_9">84,696</ix:nonFraction></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Issuance of preferred stock upon acquisition of Quellis</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_hnAIlARiS0SvE8CT-59I0g" decimals="-3" format="ixt:numdotdecimal" name="catb:TemporaryEquityStockIssuedInAcquisitionValueNewIssues" scale="3" id="Tc_cFFYtqzhpEO7XwLRu97l5A_12_9">156,185</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Reclassification of preferred stock to permanent equity</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2021_To_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_m2CQkUu3KEmX0L8QMV0Okw" decimals="-3" format="ixt:numdotdecimal" name="catb:ReclassificationOfPreferredStockToEquity" scale="3" id="Tc_dDFgqxtiZ0m1vRtMP3Oiog_13_3">240,881</ix:nonFraction>)</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_hnAIlARiS0SvE8CT-59I0g" decimals="-3" format="ixt:numdotdecimal" name="catb:ReclassificationOfPreferredStockToEquity" scale="3" id="Tc__nW2R6iIrkaOvLThmomZ8Q_13_9">240,881</ix:nonFraction>)</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Balance, end of period</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_7RZZjXZTlEWngOvK16UXcg" decimals="-3" format="ixt:zerodash" name="us-gaap:TemporaryEquityCarryingAmountAttributableToParent" scale="3" id="Tc_du7YlP38lkqfPcQF6kqliQ_14_3">&#8212;</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_7RZZjXZTlEWngOvK16UXcg" decimals="-3" format="ixt:zerodash" name="us-gaap:TemporaryEquityCarryingAmountAttributableToParent" scale="3" id="Tc_86AQm50Su0udqoFw1_unPw_14_9">&#8212;</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;border-bottom:1.5pt solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;border-bottom:1.5pt solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1.5pt solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1.5pt solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;border-bottom:1.5pt solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1.5pt solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;border-bottom:1.5pt solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;border-bottom:1.5pt solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1.5pt solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1.5pt solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;border-bottom:1.5pt solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1.5pt solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;border-bottom:1.5pt solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><b style="font-size:7.5pt;font-weight:bold;">Series X redeemable convertible preferred stock, shares</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Balance, beginning of period</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_3_31_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_StatementEquityComponentsAxis_us-gaap_PreferredStockMember_5Yp9NxSY9keeX_9L8CMhGw" decimals="INF" format="ixt:zerodash" name="us-gaap:CommonStockSharesIssued" scale="0" id="Tc_mGwD5SwYmk6EOcvi1xTb3g_17_3">&#8212;</ix:nonFraction></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_3_31_2020_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_StatementEquityComponentsAxis_us-gaap_PreferredStockMember_ghHb3R1VRkO9i_p9hwtUfA" decimals="INF" format="ixt:zerodash" name="us-gaap:CommonStockSharesIssued" scale="0" id="Tc_JwCI7sSbFkyw3D6EGH7XZw_17_6">&#8212;</ix:nonFraction></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_12_31_2020_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_StatementEquityComponentsAxis_us-gaap_PreferredStockMember_FtRKjPjDIkSlZUfWyN6eAw" decimals="INF" format="ixt:zerodash" name="us-gaap:CommonStockSharesIssued" scale="0" id="Tc_BQoFV8kx4USM3KBDfuHvAA_17_9">&#8212;</ix:nonFraction></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_12_31_2019_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_StatementEquityComponentsAxis_us-gaap_PreferredStockMember_z-zuRM7gA0CmOTbYERuziw" decimals="INF" format="ixt:zerodash" name="us-gaap:CommonStockSharesIssued" scale="0" id="Tc_B671rbSUEkidQL_LIKKqCg_17_12">&#8212;</ix:nonFraction></span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Reclassification of preferred stock to permanent equity</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_4_1_2021_To_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_StatementEquityComponentsAxis_us-gaap_PreferredStockMember_10pRzeihSE-1kwC_r9e8EA" decimals="INF" format="ixt:numdotdecimal" name="catb:CommonStockSharesReclassificationsIntoPermanentEquityFromTemporaryEquity" scale="0" id="Tc_AhlJmv_nh0u8-JshPLHZMg_18_3">86,077</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_StatementEquityComponentsAxis_us-gaap_PreferredStockMember_rNz0EBalr0amQzsFZQnp_A" decimals="INF" format="ixt:numdotdecimal" name="catb:CommonStockSharesReclassificationsIntoPermanentEquityFromTemporaryEquity" scale="0" id="Tc_JxhILomaD0i9j9qZsywOXg_18_9">86,077</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Conversion of preferred stock into common stock</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> (<ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_4_1_2021_To_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_StatementEquityComponentsAxis_us-gaap_PreferredStockMember_10pRzeihSE-1kwC_r9e8EA" decimals="INF" format="ixt:numdotdecimal" name="catb:StockIssuedDuringPeriodSharesIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares" scale="0" id="Tc_0NfAc5XRNkGvfCjytCCqrw_19_3">53,532</ix:nonFraction>)</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> (<ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_StatementEquityComponentsAxis_us-gaap_PreferredStockMember_rNz0EBalr0amQzsFZQnp_A" decimals="INF" format="ixt:numdotdecimal" name="catb:StockIssuedDuringPeriodSharesIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares" scale="0" id="Tc_BETz0On94UmM4pL57Hnezg_19_9">53,532</ix:nonFraction>)</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Balance, end of period</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_StatementEquityComponentsAxis_us-gaap_PreferredStockMember_0Ar8-QdruE6N_QQeHMdEsQ" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:CommonStockSharesIssued" scale="0" id="Tc_gJ24VaEvTUemY3mz7Mbxrg_20_3">32,545</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_StatementEquityComponentsAxis_us-gaap_PreferredStockMember_0Ar8-QdruE6N_QQeHMdEsQ" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:CommonStockSharesIssued" scale="0" id="Tc_pGDqt54jbEaygO_xxSFUlQ_20_9">32,545</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><b style="font-size:7.5pt;font-weight:bold;">Series X redeemable convertible preferred stock, value</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Balance, beginning of period</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_3_31_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_StatementEquityComponentsAxis_us-gaap_PreferredStockMember_5Yp9NxSY9keeX_9L8CMhGw" decimals="-3" format="ixt:zerodash" name="us-gaap:StockholdersEquity" scale="3" id="Tc_zHhkuzPDc0qDQh1IOx4Gvw_22_3">&#8212;</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_3_31_2020_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_StatementEquityComponentsAxis_us-gaap_PreferredStockMember_ghHb3R1VRkO9i_p9hwtUfA" decimals="-3" format="ixt:zerodash" name="us-gaap:StockholdersEquity" scale="3" id="Tc_CpeSEpTj-kyYSAe26m8jjg_22_6">&#8212;</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_StatementEquityComponentsAxis_us-gaap_PreferredStockMember_FtRKjPjDIkSlZUfWyN6eAw" decimals="-3" format="ixt:zerodash" name="us-gaap:StockholdersEquity" scale="3" id="Tc_rtZGtJZDEEC5weVvkbfn3A_22_9">&#8212;</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2019_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_StatementEquityComponentsAxis_us-gaap_PreferredStockMember_z-zuRM7gA0CmOTbYERuziw" decimals="-3" format="ixt:zerodash" name="us-gaap:StockholdersEquity" scale="3" id="Tc_8My5PB_bKU-j-DpBHChs2w_22_12">&#8212;</ix:nonFraction></span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Reclassification of preferred stock to permanent equity</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2021_To_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_StatementEquityComponentsAxis_us-gaap_PreferredStockMember_10pRzeihSE-1kwC_r9e8EA" decimals="-3" format="ixt:numdotdecimal" name="catb:CommonStockValueReclassificationsIntoPermanentEquityFromTemporaryEquity" scale="3" id="Tc_NicIz3SP8kmmk0e_9PaJQw_23_3">240,881</ix:nonFraction></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_StatementEquityComponentsAxis_us-gaap_PreferredStockMember_rNz0EBalr0amQzsFZQnp_A" decimals="-3" format="ixt:numdotdecimal" name="catb:CommonStockValueReclassificationsIntoPermanentEquityFromTemporaryEquity" scale="3" id="Tc_uiLF9gLackWVg8izwxVJ8g_23_9">240,881</ix:nonFraction></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Conversion of preferred stock into common stock</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2021_To_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_StatementEquityComponentsAxis_us-gaap_PreferredStockMember_10pRzeihSE-1kwC_r9e8EA" decimals="-3" format="ixt:numdotdecimal" name="catb:StockIssuedDuringPeriodValueIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares" sign="-" scale="3" id="Tc_a42Wc8Zb0E6NBacv-A7y3Q_24_3">165,548</ix:nonFraction>)</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_StatementEquityComponentsAxis_us-gaap_PreferredStockMember_rNz0EBalr0amQzsFZQnp_A" decimals="-3" format="ixt:numdotdecimal" name="catb:StockIssuedDuringPeriodValueIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares" sign="-" scale="3" id="Tc_NTkCWc8SmUK6QtjOqQGDPA_24_9">165,548</ix:nonFraction>)</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Dividend on convertible preferred stock related to beneficial conversion feature and issuance costs</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2021_To_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_StatementEquityComponentsAxis_us-gaap_PreferredStockMember_10pRzeihSE-1kwC_r9e8EA" decimals="-3" format="ixt:numdotdecimal" name="catb:IncreaseDecreaseInEquityDueToDividendsOnConvertiblePreferredStockBeneficialConversionFeature" scale="3" id="Tc_RFwnSRhWPUWdoXKXM7ZC-A_25_3">24,437</ix:nonFraction></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_StatementEquityComponentsAxis_us-gaap_PreferredStockMember_rNz0EBalr0amQzsFZQnp_A" decimals="-3" format="ixt:numdotdecimal" name="catb:IncreaseDecreaseInEquityDueToDividendsOnConvertiblePreferredStockBeneficialConversionFeature" scale="3" id="Tc_06H5Y82bPUCJ6RwtNRCxsA_25_9">24,437</ix:nonFraction></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Balance, end of period</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_StatementEquityComponentsAxis_us-gaap_PreferredStockMember_0Ar8-QdruE6N_QQeHMdEsQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" scale="3" id="Tc_iL61TYG6lkun7YkQhrebVw_26_3">99,770</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_StatementEquityComponentsAxis_us-gaap_PreferredStockMember_0Ar8-QdruE6N_QQeHMdEsQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" scale="3" id="Tc_WP4HcA9TcU-kMQl8n057RA_26_9">99,770</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><b style="font-size:7.5pt;font-weight:bold;">Common stock, shares</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Balance, beginning of period</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_3_31_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_a6oV4ARG-ES_WNQ7d8VB9Q" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:CommonStockSharesIssued" scale="0" id="Tc_pcunf8SuS06qEw8rvT3wCw_28_3">23,417,006</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_3_31_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_-qiysaaR20Ccj5aoF09YXA" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:CommonStockSharesIssued" scale="0" id="Tc_2nF8p52zekeb0urEjEqpUA_28_6">17,897,172</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_12_31_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_RNYe7KlN1Uu6vnZ-Xoz_fw" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:CommonStockSharesIssued" scale="0" id="Tc_vkU2Jw9sR0KsFvuDMmlcaw_28_9">20,084,337</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_12_31_2019_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_c5J-ID8my0eUdAFLlmSrzg" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:CommonStockSharesIssued" scale="0" id="Tc_80aAjqkmXEKJRRDqBovKbQ_28_12">12,433,600</ix:nonFraction></span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Issuance of common stock upon acquisition of Quellis</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_TzNfiYq8RUStlye-yGPqcA" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:StockIssuedDuringPeriodSharesAcquisitions" scale="0" id="Tc_kfjRGsLdVUavaKqtfDUmnA_29_9">3,332,669</ix:nonFraction></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Issuance of common stock upon the conversion of preferred stock</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_4_1_2021_To_6_30_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_GFPtlLmrM0O5LSJ794gLBA" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities" scale="0" id="Tc_rQJbg0q790WNTgOJqHk0jw_30_3">53,531,797</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_TzNfiYq8RUStlye-yGPqcA" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities" scale="0" id="Tc_PbT26Yo-z0WWu5lZKEK0ug_30_9">53,531,797</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Issuance of common stock for at-the-market offerings</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_4_1_2020_To_6_30_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_eY4PZdM_Fkayjr1aY5XrDQ" decimals="INF" format="ixt:numdotdecimal" name="catb:StockIssuedDuringPeriodSharesNewIssuesAtMarketOfferings" scale="0" id="Tc_AUDVnpDY30i-eRe72fp3Wg_31_6">926,429</ix:nonFraction></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_1_1_2020_To_6_30_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_RyLdhxhh0kGCrLr_sFPkug" decimals="INF" format="ixt:numdotdecimal" name="catb:StockIssuedDuringPeriodSharesNewIssuesAtMarketOfferings" scale="0" id="Tc_G624uhttd0i9ckTL_Uv-Ww_31_12">1,100,001</ix:nonFraction></span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Issuance of common stock and warrants in public offerings</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_1_1_2020_To_6_30_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_RyLdhxhh0kGCrLr_sFPkug" decimals="INF" format="ixt:numdotdecimal" name="catb:IssuanceOfCommonStockAndWarrantsInPublicOfferingsShares" scale="0" id="Tc_eDcNROXfzUy-v7Kg7vYDuA_32_12">5,290,000</ix:nonFraction></span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Balance, end of period</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_wdwcqnPdg0WcXYer4OdgSQ" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:CommonStockSharesIssued" scale="0" id="Tc_KWKRroOkcE-tnKGKyl9XBQ_33_3">76,948,803</ix:nonFraction></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_a4DU8i4FHkq39GBAheN8sA" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:CommonStockSharesIssued" scale="0" id="Tc_msk19dSMUUieYPIhvkP2ZQ_33_6">18,823,601</ix:nonFraction></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_wdwcqnPdg0WcXYer4OdgSQ" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:CommonStockSharesIssued" scale="0" id="Tc_jWwufJS8x0elqfy3dPq_GQ_33_9">76,948,803</ix:nonFraction></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_a4DU8i4FHkq39GBAheN8sA" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:CommonStockSharesIssued" scale="0" id="Tc_kgXH6MR_UkKyRHk0KptqyQ_33_12">18,823,601</ix:nonFraction></span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><b style="font-size:7.5pt;font-weight:bold;">Common stock, par value</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> </span><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> </span><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> </span><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> </span><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Balance, beginning of period</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_3_31_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_a6oV4ARG-ES_WNQ7d8VB9Q" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" scale="3" id="Tc_tId5OYz350qsUgz-ECaudQ_35_3">23</ix:nonFraction></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_3_31_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_-qiysaaR20Ccj5aoF09YXA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" scale="3" id="Tc_tHVRJB7ebk29K1N72hpaQw_35_6">18</ix:nonFraction></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_RNYe7KlN1Uu6vnZ-Xoz_fw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" scale="3" id="Tc_Qq2NGZAgWEqhqCdKx-Bacw_35_9">20</ix:nonFraction></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2019_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_c5J-ID8my0eUdAFLlmSrzg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" scale="3" id="Tc_kdxNo71PIk2S8Kgp82b3RQ_35_12">12</ix:nonFraction></span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Issuance of common stock upon acquisition of Quellis</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_TzNfiYq8RUStlye-yGPqcA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockIssuedDuringPeriodValueAcquisitions" scale="3" id="Tc_0A2P3k1tyEeBiJegmNUe5A_36_9">3</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Issuance of common stock upon the conversion of preferred stock</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2021_To_6_30_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_GFPtlLmrM0O5LSJ794gLBA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockIssuedDuringPeriodValueConversionOfConvertibleSecurities" scale="3" id="Tc_u7t-ZW35r0exYNS0Xc9lBQ_37_3">54</ix:nonFraction></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_TzNfiYq8RUStlye-yGPqcA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockIssuedDuringPeriodValueConversionOfConvertibleSecurities" scale="3" id="Tc_HIbtXWSk9E6qCeDg_t4Yww_37_9">54</ix:nonFraction></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Issuance of common stock for at-the-market offerings</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2020_To_6_30_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_eY4PZdM_Fkayjr1aY5XrDQ" decimals="-3" format="ixt:numdotdecimal" name="catb:StockIssuedDuringPeriodValueNewIssuesAtMarketOfferings" scale="3" id="Tc_WZb_tW3MzUuxOgZv5tFt4g_38_6">1</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_RyLdhxhh0kGCrLr_sFPkug" decimals="-3" format="ixt:numdotdecimal" name="catb:StockIssuedDuringPeriodValueNewIssuesAtMarketOfferings" scale="3" id="Tc_n0CTAvqcAUmvX2GLc5dyJw_38_12">2</ix:nonFraction></span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Issuance of common stock and warrants in public offerings</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" 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New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_wdwcqnPdg0WcXYer4OdgSQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" scale="3" id="Tc_Ue6feFp1q0mBNRdZV_GBMA_40_3">77</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_a4DU8i4FHkq39GBAheN8sA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" scale="3" id="Tc_WH10brpmKkONumTAScIVXg_40_6">19</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_wdwcqnPdg0WcXYer4OdgSQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" scale="3" id="Tc_f-4DgWau-kyUIkmVW8srKQ_40_9">77</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction 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style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Balance, beginning of period</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_3_31_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_AdditionalPaidInCapitalMember_N3draPqsfUGUR6YA-sxGCQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" scale="3" id="Tc_o6GN1m_9TEKIfbUa1ZZwmQ_42_3">329,813</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_3_31_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_AdditionalPaidInCapitalMember_EDih3ewmh0iv_yrPNHDQ3Q" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" scale="3" id="Tc_Tw4W1CqmqUamktlrVSHEdQ_42_6">285,257</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_AdditionalPaidInCapitalMember_NIzOjbfjpE65lspCe2mAdw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" scale="3" id="Tc__HTD5lnd30ec7cqO7UaoYA_42_9">301,546</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2019_us-gaap_StatementEquityComponentsAxis_us-gaap_AdditionalPaidInCapitalMember_9hMElc0V90q5xsoZ0JjuWw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" scale="3" id="Tc_zliWkyRJX0-ZnykuUYpOVg_42_12">259,305</ix:nonFraction></span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Issuance of preferred stock in a private offering of public equity, net of issuance costs</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_AdditionalPaidInCapitalMember_zunH47itiU6OnR6USyh-lg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature" scale="3" id="Tc_PdPMA0jb2E6qYCgnt2ZHnA_43_9">19,565</ix:nonFraction></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Issuance of common stock upon acquisition of Quellis</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_AdditionalPaidInCapitalMember_zunH47itiU6OnR6USyh-lg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockIssuedDuringPeriodValueAcquisitions" scale="3" id="Tc_HkXyg4Vt1UydQ8xhxzxt1w_44_9">8,095</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Issuance of common stock in a public offering, net of issuance costs</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_AdditionalPaidInCapitalMember_5nBWTmrPlUGxWYJnYPNQVw" decimals="-3" format="ixt:numdotdecimal" name="catb:AdjustmentsToAdditionalPaidInCapitalCommonStockIssuedInPublicOffering" scale="3" id="Tc_4wGJ4fdyDESHtYuS4dO-uA_45_12">24,554</ix:nonFraction></span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Issuance of common stock upon the conversion of preferred stock</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2021_To_6_30_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_AdditionalPaidInCapitalMember_4CAalejbXkyFgLpg9HMlrA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockIssuedDuringPeriodValueConversionOfConvertibleSecurities" scale="3" id="Tc_mWXLw5NlUUKpKtBnkEi33w_46_3">165,495</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_AdditionalPaidInCapitalMember_zunH47itiU6OnR6USyh-lg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockIssuedDuringPeriodValueConversionOfConvertibleSecurities" scale="3" id="Tc_WsyL5Jac1ECMkv9c655FzQ_46_9">165,495</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Dividend on convertible preferred stock related to beneficial conversion feature and issuance costs</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2021_To_6_30_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_AdditionalPaidInCapitalMember_4CAalejbXkyFgLpg9HMlrA" decimals="-3" format="ixt:numdotdecimal" name="catb:IncreaseDecreaseInEquityDueToDividendsOnConvertiblePreferredStockBeneficialConversionFeature" sign="-" scale="3" id="Tc_Dp4D3vNlMkq-fvmVAtVrBQ_47_3">24,437</ix:nonFraction>)</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_AdditionalPaidInCapitalMember_zunH47itiU6OnR6USyh-lg" decimals="-3" format="ixt:numdotdecimal" name="catb:IncreaseDecreaseInEquityDueToDividendsOnConvertiblePreferredStockBeneficialConversionFeature" sign="-" scale="3" id="Tc_bTkszt6gwUO9Xb-8CCDl7w_47_9">24,437</ix:nonFraction>)</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Expense related to warrants inherited in acquisiton of 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Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_AdditionalPaidInCapitalMember_zunH47itiU6OnR6USyh-lg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:AdjustmentsToAdditionalPaidInCapitalWarrantIssued" scale="3" id="Tc_WE4gDkrIeEaLI66lAwWw4w_48_9">387</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Reclassification of warrant liability to additional paid-in capital</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2021_To_6_30_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_AdditionalPaidInCapitalMember_4CAalejbXkyFgLpg9HMlrA" decimals="-3" format="ixt:numdotdecimal" name="catb:ReclassificationOfWarrantLiabilityUponConversionOfWarrants" scale="3" id="Tc_R9RoZn7XGE2IEYPyE7gBlA_49_3">3,468</ix:nonFraction></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_AdditionalPaidInCapitalMember_zunH47itiU6OnR6USyh-lg" decimals="-3" format="ixt:numdotdecimal" name="catb:ReclassificationOfWarrantLiabilityUponConversionOfWarrants" scale="3" id="Tc_LiHn2CkHHEW9LqBR8o_nnA_49_9">3,468</ix:nonFraction></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Issuance of common stock for at-the-market offerings</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2020_To_6_30_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_AdditionalPaidInCapitalMember_k97bx4xr-ECzT_XWnrQADw" decimals="-3" format="ixt:numdotdecimal" name="catb:StockIssuedDuringPeriodValueNewIssuesAtMarketOfferings" scale="3" id="Tc_VAPrN6_hFk6s2vxkVvQEoA_50_6">6,269</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_AdditionalPaidInCapitalMember_5nBWTmrPlUGxWYJnYPNQVw" decimals="-3" 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Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2021_To_6_30_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_AdditionalPaidInCapitalMember_4CAalejbXkyFgLpg9HMlrA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" scale="3" id="Tc_7AyqkErFqEeHucVxkS9lEw_51_3">1,014</ix:nonFraction></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2020_To_6_30_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_AdditionalPaidInCapitalMember_k97bx4xr-ECzT_XWnrQADw" 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#000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_AdditionalPaidInCapitalMember_5nBWTmrPlUGxWYJnYPNQVw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" scale="3" id="Tc_jLUKzdw-5EebXdo0HdemjA_51_12">710</ix:nonFraction></span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Balance, end of period</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_AdditionalPaidInCapitalMember_RcFV_c7mIUisAiH5rX67hw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" scale="3" id="Tc_5S4BWqJx0UKIi0IB1e05fA_52_3">475,499</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_AdditionalPaidInCapitalMember_05D1SbLKpkaEK_ZQnU_o6g" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" scale="3" id="Tc_J6yqoPzt70i0fEFyN9B38g_52_6">291,897</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_AdditionalPaidInCapitalMember_RcFV_c7mIUisAiH5rX67hw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" scale="3" id="Tc_ZXh7M4vn0UyceZy65qw_Zg_52_9">475,499</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_AdditionalPaidInCapitalMember_05D1SbLKpkaEK_ZQnU_o6g" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" scale="3" id="Tc_r8Js-Svb6kGTesxGKLEOHw_52_12">291,897</ix:nonFraction></span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><b style="font-size:7.5pt;font-weight:bold;">Accumulated deficit</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> </span><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> </span><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> </span><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> </span><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Balance, beginning of period</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_3_31_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_RetainedEarningsMember_-ze_sKvNCU23JUIeQ8iFXg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" sign="-" scale="3" id="Tc_fEe77m6wYkuX2XtR7qSagw_54_3">430,981</ix:nonFraction>)</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_3_31_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_RetainedEarningsMember_36uJrg6AAE6a5Oj0izGujQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" sign="-" scale="3" id="Tc_hqereT2X3kieV6fXvYMl7w_54_6">231,549</ix:nonFraction>)</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_RetainedEarningsMember_XOWbkM2VOU-sKRAndtpl_w" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" sign="-" scale="3" id="Tc_oKVy1krxKEmgJZCy0vS7CA_54_9">260,897</ix:nonFraction>)</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2019_us-gaap_StatementEquityComponentsAxis_us-gaap_RetainedEarningsMember_0iiaUNtM6USDXNQO9D1Gkg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" sign="-" scale="3" id="Tc_R7gWr3ZzXEWY65jHHhuQeQ_54_12">223,597</ix:nonFraction>)</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Net loss</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2021_To_6_30_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_RetainedEarningsMember_bk-aYrVqb0eva09NW3MNOA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:NetIncomeLoss" sign="-" scale="3" id="Tc_gLTHibrdTUOVuqkhMwaFwg_55_3">7,466</ix:nonFraction>)</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2020_To_6_30_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_RetainedEarningsMember_ZEEYGzghbkaDK35aGgm-uQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:NetIncomeLoss" sign="-" scale="3" id="Tc_O6fsuIepe0SEoFn3ssTKCg_55_6">9,508</ix:nonFraction>)</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_RetainedEarningsMember_qq6uB5s_ckWwZNs7Azl_Ng" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:NetIncomeLoss" sign="-" scale="3" id="Tc_W5B8-iEr30iz9_IioSF5pg_55_9">177,550</ix:nonFraction>)</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_RetainedEarningsMember_poN_Ha1wGUGrAbxhHirveA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:NetIncomeLoss" sign="-" scale="3" id="Tc_iR_wuwz0hUanMOOiBHR9zQ_55_12">17,460</ix:nonFraction>)</span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Balance, end of period</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_RetainedEarningsMember_n6MggY0zu0m3qTUCH4RTEg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" sign="-" scale="3" id="Tc_VJW2fI9Su0K6qoclYNNWHQ_56_3">438,447</ix:nonFraction>)</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_RetainedEarningsMember_VA2zJi2F5kmURU658f8v-g" decimals="-3" 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style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_RetainedEarningsMember_VA2zJi2F5kmURU658f8v-g" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" sign="-" scale="3" id="Tc_QCyBoDg-0023wXtmNdOtPA_56_12">241,057</ix:nonFraction>)</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><b style="font-size:7.5pt;font-weight:bold;">Accumulated other comprehensive loss</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> </span><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> </span><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> </span><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> </span><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Balance, beginning of period</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt;"><span style="font-size:7.5pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_3_31_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_AccumulatedOtherComprehensiveIncomeMember_h5GDgXHoyUWKTRb91DrktA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" sign="-" scale="3" id="Tc_dIBVD558wk6fUswkphkFGg_58_6">15</ix:nonFraction>)</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2019_us-gaap_StatementEquityComponentsAxis_us-gaap_AccumulatedOtherComprehensiveIncomeMember_N11sBlzGdU2dFSNt8sWMkA" decimals="-3" format="ixt:zerodash" name="us-gaap:StockholdersEquity" scale="3" id="Tc_FTpZv30dRUOvo043wE7_vA_58_12">&#8212;</ix:nonFraction></span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Realized loss on short-term investments</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2020_To_6_30_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_AccumulatedOtherComprehensiveIncomeMember_yZs5wR7kNUyyn5knRFNV0Q" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax" scale="3" id="Tc_99FTfJiTnkepC3QcJBQj5w_59_6">16</ix:nonFraction></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">&#160;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_AccumulatedOtherComprehensiveIncomeMember_z2cMrG5xsUGVkPbnpNxqjg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax" scale="3" id="Tc_6gxu0rT_ykWkEQw-BjacGg_59_12">1</ix:nonFraction></span></p></td></tr><tr><td style="vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Balance, end of period</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_AccumulatedOtherComprehensiveIncomeMember_Q9RGAFwV3EGWvDoifUQRqg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" scale="3" id="Tc_twaioOuRWUCLEuOgh3fyng_60_6">1</ix:nonFraction></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.32%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_AccumulatedOtherComprehensiveIncomeMember_Q9RGAFwV3EGWvDoifUQRqg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" scale="3" id="Tc_VMYsF3cd6Em4WdGojTennQ_60_12">1</ix:nonFraction></span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">Total stockholders&#39; equity</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" scale="3" id="Tc_I1YS0tVXNEWmpcz9VcPslg_61_3">136,899</ix:nonFraction></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.7%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2020_7-tEzvs8REmFsM1C9uDqhA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" scale="3" id="Tc_K3Gu5vL4Oku9gsohw7dk7A_61_6">50,860</ix:nonFraction></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.29%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" scale="3" id="Tc_xfuH7q3ZDk-cqr0HC-NqyA_61_9">136,899</ix:nonFraction></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;margin:0pt;"><span style="font-size:7.5pt;">$</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.32%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:7pt;line-height:1.19;text-align:right;margin:0pt 2.25pt 0pt 0pt;"><span style="font-size:7.5pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2020_7-tEzvs8REmFsM1C9uDqhA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:StockholdersEquity" scale="3" id="Tc_eC5h-1r38k2qEAuA8TlrWA_61_12">50,860</ix:nonFraction></span></p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><i style="font-style:italic;">The accompanying notes are an integral part of these condensed consolidated financial statements.</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.28;margin:0pt 0pt 8pt 0pt;"><span style="font-size:5pt;font-style:italic;line-height:1.19;margin-bottom:0pt;visibility:hidden;">&#8203;</span></p></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;">6</p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.28;margin:0pt;"><span style="font-size:1pt;font-weight:bold;line-height:1.19;visibility:hidden;">&#8203;</span></p><a id="_5ffda1da_fb1b_431d_a36f_9a2f50a39469"></a><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Catabasis Pharmaceuticals,&#160;Inc</b>.</p><a id="CondensedConsolidatedStatementsofCashFlo"></a><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Condensed Consolidated Statements of Cash Flows</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt 0pt 12pt 0pt;">(In thousands)</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><i style="font-style:italic;">(Unaudited)</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><a id="_9a22fadf_c7d3_4a9c_a73f_73ae87a75cf8"></a><a id="Tc_HzXOQw6YeU-4U6_O7cBpfA_1_2"></a><a id="Tc_QxmoVndhg0qxIaRbeiAOlw_2_2"></a><a id="Tc_ij5tSz-vHUCMhqlGY-twkQ_2_5"></a><a id="Tc_bd44ap5_eUCCF9dDRToGCA_3_0"></a><a id="Tc_UNS7tBsAJ0uAP4-pmTawMQ_4_0"></a><a id="Tc_HMZ3GilXCUq3tppd8WF3ew_4_2"></a><a id="Tc_oh5d0LWpRUWExEOICt9OPg_4_5"></a><a id="Tc_eSJqLRfC5kaMQBl2vybpWg_5_0"></a><a id="Tc_Bw3jXR6s1UKTLlyzz0Kjbg_6_0"></a><a id="Tc_b4Edwc62i0aQ2DJVoJZBPw_6_6"></a><a id="Tc_j0gr0M0BNUqDlueILK9YTQ_7_0"></a><a id="Tc_VdbSHQMK9EOoZCwiRWeDhg_8_0"></a><a id="Tc_zt1LcU11gkeUqW4xKVUFJw_8_6"></a><a id="Tc_RhZq5-qUYUu1hilCvjzQIA_9_0"></a><a id="Tc_ETvI6mOpkEqx36PxGq6d2Q_10_0"></a><a id="Tc_QXAXNrTmN0CtFk_KbTYAog_11_0"></a><a id="Tc_wuOd03L0nUCYpO8BgTtyyw_12_0"></a><a id="Tc_-_vjnkz1jE6gz2C2EVmO4A_13_0"></a><a id="Tc_PUoPPwGd_EWClpRXJUWexQ_14_0"></a><a id="Tc_JqyNGmB7Z0ev6lCguOrV_Q_15_0"></a><a id="Tc_a86p3TcOVE2pOhTXDoFT-g_16_0"></a><a id="Tc_nwTzHh2dw0GcT9oDN18KYQ_17_0"></a><a id="Tc_tKQ7B3Ko6EWFcg3qa6i8jA_17_3"></a><a id="Tc_KyhxzrGepEmwTATVAtHBvg_18_0"></a><a id="Tc_gnXP9vIxX0uZiWGacOFCiw_19_0"></a><a id="Tc_z3tgLB8wC0m5lntYUX2K9w_19_6"></a><a id="Tc_VKccTJUTZk6PATp3GxhI4g_20_0"></a><a id="Tc__34Nq2mfLUibEczW3D5QFA_21_0"></a><a id="Tc_0-KP-dKPi06lQKl7aHh7Ag_22_0"></a><a id="Tc_ttxl2qCLtEyA3t9-oM4x4w_23_0"></a><a id="Tc_ZQDDSnEqP0awH48DIXwrng_23_3"></a><a id="Tc_wqdPiln5IEiMhvD8FcMy3g_24_0"></a><a id="Tc_WGy95r6fXEq-7R-Ui8iK8Q_24_6"></a><a id="Tc_TgR963JdxUuY6e0K2Huxdg_25_0"></a><a id="Tc_eVbK1xIdJkmkin6hIoeBpQ_25_3"></a><a id="Tc_S_jWfcp8Gk2eIdfdZzgM6Q_26_0"></a><a id="Tc_BMmEQCmIXEWmsp4W8QEHIA_27_0"></a><a id="Tc_KicVE3c1jUOBzl4rj3mSyA_28_0"></a><a id="Tc_ukkxJQsRWUeTAtdAlzIVew_29_0"></a><a id="Tc_3zsOV4_Zmkm3CLZ92VRbDQ_29_2"></a><a id="Tc_nWZ3wUZ4lUe5Xar2RdIGew_29_5"></a><a id="Tc_v4Eoud07r0WTtno4PkXxfQ_30_0"></a><a id="Tc_3KTHPYxxb0yfFniQ1ZzsEw_31_0"></a><a id="Tc_eMepX1u0KEOkvVd_KDCObw_31_2"></a><a id="Tc_i85pfZEU3EapjXKQXIu2_g_31_5"></a><a id="Tc_2jeHmQqq8027xsA06yLauQ_31_6"></a><a id="Tc_9s7wEIS2bECm_ddpDThpOQ_32_0"></a><a id="Tc_Eh0kl_zKyU-pS0JVErxt6A_32_2"></a><a id="Tc_9JHFxFWpb06EstlQxgdyow_32_5"></a><a id="Tc_7mRgH5mpfkiNLzCvvnn70A_32_6"></a><a id="Tc_gDWdK4gnpEe6CVL1Msb2xg_33_0"></a><a id="Tc_WHCAw71GTESrWKBoviCktg_33_2"></a><a id="Tc_p1SJope1QECOf8dn-kb5FQ_33_5"></a><a id="Tc_s4PnjInp-0aa7szOakJnHw_33_6"></a><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.96%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="5" style="vertical-align:bottom;white-space:nowrap;width:24.69%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Six Months Ended June&#160;30,&#160;</b></p></td></tr><tr><td style="vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.94%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2021</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.42%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2020</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;"><b style="font-weight:bold;">Operating activities</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Net loss</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:ProfitLoss" sign="-" scale="3" id="Tc_2CsVbg9UX0K35OOMI5e88A_4_3">177,550</ix:nonFraction>)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:ProfitLoss" sign="-" scale="3" id="Tc_eqaQFWgR0UKkEAHGwp_0yw_4_6">17,460</ix:nonFraction>)</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Reconciliation of net loss to net cash used in operating activities:</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;">Non-cash portion of acquired in-process research and development</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="catb:NonCashPortionOfAcquiredResearchAndDevelopment" scale="3" id="Tc_UCts_8Bys0Gnsfua57-j2g_6_3">164,612</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;">Stock-based compensation expense</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:ShareBasedCompensation" scale="3" id="Tc_XV7eaOLLFUuMMAyy7uFFaw_7_3">1,380</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:ShareBasedCompensation" scale="3" id="Tc_ntEZLMF47kCeRCtA01xWiA_7_6">710</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;">(Gain) loss on warrants inherited in acquisiton of Quellis</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="catb:GainLossOnWarrantInherited" sign="-" scale="3" id="Tc_Sm4F8yDM3E-4cKB-S_X9wg_8_3">700</ix:nonFraction>)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;">Other non-cash items</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OtherNoncashIncomeExpense" sign="-" scale="3" id="Tc__wEJfJnqmUaq6kwYIVOi_A_9_3">10</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OtherNoncashIncomeExpense" sign="-" scale="3" id="Tc_03TBlVUIkkmcAtV1XSZaQQ_9_6">23</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;">Changes in assets and liabilities:</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;">Prepaid expenses and other assets</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" sign="-" scale="3" id="Tc_EqPV3FEb-U-0sle53mWNxg_11_3">999</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" sign="-" scale="3" id="Tc_uaLcoTknoUSeCFlTxU5JwQ_11_6">1,079</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 18pt;">Right-of-use asset- operating</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="catb:IncreaseDecreaseInRightOfUseAssetOperating" sign="-" scale="3" id="Tc_FwULVWiL6EKj_FYYD5JOnQ_12_3">85</ix:nonFraction>)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="catb:IncreaseDecreaseInRightOfUseAssetOperating" scale="3" id="Tc_4C7iQtoUOkmbx-UpiY7lbg_12_6">134</ix:nonFraction></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 18pt;">Accounts payable</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:IncreaseDecreaseInAccountsPayable" sign="-" scale="3" id="Tc__yQO68RLAEKFE5Y23r1Iig_13_3">2,900</ix:nonFraction>)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:IncreaseDecreaseInAccountsPayable" sign="-" scale="3" id="Tc_CMtrgNsS8E2TtpiwY-12dg_13_6">26</ix:nonFraction>)</p></td></tr><tr><td style="vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 18pt;">Accrued expenses</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:IncreaseDecreaseInAccruedLiabilities" sign="-" scale="3" id="Tc_jaYuvYH7kk-loQ53XN0vcQ_14_3">1,882</ix:nonFraction>)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.96%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:IncreaseDecreaseInAccruedLiabilities" scale="3" id="Tc_OHAaPBKKrEy7GuArC0cBhQ_14_6">1,085</ix:nonFraction></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Net cash used in operating activities</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:NetCashProvidedByUsedInOperatingActivities" sign="-" scale="3" id="Tc_sPcjvFDOgECExHOjU8zCdg_15_3">16,116</ix:nonFraction>)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.96%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:NetCashProvidedByUsedInOperatingActivities" sign="-" scale="3" id="Tc_mr_5D0UL90SQioA9p9VXdw_15_6">14,455</ix:nonFraction>)</p></td></tr><tr><td style="vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;"><b style="font-weight:bold;">Investing activities</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Purchases of short-term investments </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:PaymentsToAcquireShortTermInvestments" scale="3" id="Tc_GAp_ERL9L0uCuwE4EL-aRw_17_6">42,777</ix:nonFraction>)</p></td></tr><tr><td style="vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Sales and maturities of short-term investments </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments" scale="3" id="Tc_m8wl8RUrpEm7YUEKKyXfdg_18_3">20,000</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments" scale="3" id="Tc_rwwtUngZEEGtFRQT66Y7wA_18_6">67,110</ix:nonFraction></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Cash acquired in acquisition of Quellis</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:CashAcquiredFromAcquisition" scale="3" id="Tc_uRib3As-pEOJSMldfE7mjg_19_3">6,466</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td></tr><tr><td style="vertical-align:bottom;white-space:nowrap;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Purchases of property and equipment</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:PaymentsToAcquirePropertyPlantAndEquipment" scale="3" id="Tc_XRsZ4dReIECxPnDOlHOECQ_20_3">21</ix:nonFraction>)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.96%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:PaymentsToAcquirePropertyPlantAndEquipment" scale="3" id="Tc_qMxL6-Jy_0yrOCajl80JyQ_20_6">23</ix:nonFraction>)</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Net cash provided by investing activities</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:NetCashProvidedByUsedInInvestingActivities" scale="3" id="Tc_wcszcK-W8Uu4iNwMuJSQOA_21_3">26,445</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.96%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:NetCashProvidedByUsedInInvestingActivities" scale="3" id="Tc_JevbXjBD1UeRXlsxAhEuRQ_21_6">24,310</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;"><b style="font-weight:bold;">Financing activities</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Proceeds from public offering, net of issuance costs</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:ProceedsFromIssuanceInitialPublicOffering" scale="3" id="Tc_kpYBnXZeeU2nmmJF6bYlxA_23_6">24,559</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Proceeds from private offering of public equity, net of issuance costs</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:ProceedsFromIssuanceOfPrivatePlacement" scale="3" id="Tc_EefoQA4FFkuXGwY92NB2Bw_24_3">104,261</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Proceeds from at-the-market offering, net of issuance costs</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.96%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="catb:ProceedsFromIssuanceOfAtMarketOffering" scale="3" id="Tc_b9_1aKYSskq3ThFhPwriIA_25_6">7,330</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Net cash provided by financing activities</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:NetCashProvidedByUsedInFinancingActivities" scale="3" id="Tc_GC1-TEAVLk-glCmf3OEt0Q_26_3">104,261</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.96%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:NetCashProvidedByUsedInFinancingActivities" scale="3" id="Tc_PeRgWkQlF0mUUpq6NnU2Ww_26_6">31,889</ix:nonFraction></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Net increase in cash, cash equivalents and restricted cash</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" scale="3" id="Tc_mCSxH-ny3ke704A1DaBBCA_27_3">114,590</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.96%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_-66USvrKfUmJtYRnZMCcYQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" scale="3" id="Tc_Qitkjzvbg069PH8HWjaXsw_27_6">41,744</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Cash, cash equivalents and restricted cash, beginning of period</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" scale="3" id="Tc_v1LViUvazk2sRCerJyxKHQ_28_3">25,051</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.96%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2019_OiWf0xwoMkyQX0xtQrutvQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" scale="3" id="Tc_Qlau19Z_m0CuPBGn1TWeHw_28_6">10,376</ix:nonFraction></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Cash, cash equivalents and restricted cash, end of period</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" scale="3" id="Tc_GUAYkB8LF0OZOwt8F6UCRg_29_3">139,641</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.96%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2020_7-tEzvs8REmFsM1C9uDqhA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" scale="3" id="Tc_2Hmgvuv7u0-s55KF-qkjiw_29_6">52,120</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Supplemental disclosure of non-cash transactions:</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.96%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Conversion of Series X Preferred Stock into common stock</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:ConversionOfStockAmountConverted1" scale="3" id="Tc_am4pa-ezt0OIt1BOhlLmEw_31_3">165,549</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.96%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td></tr><tr><td style="vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Non-cash dividend on convertible preferred stock</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="catb:DividendOnConvertiblePreferredStockRelatedToBeneficialConversionFeatureAndIssuanceCosts" scale="3" id="Tc_-wyPC235uUi6Dot1jpIEIA_32_3">24,437</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.96%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:72.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Reclassification of warrant liability to additional paid-in capital</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="catb:ReclassificationOfEquityClassifiedWarrants" scale="3" id="Tc_23XLbFc4w0KG-ikPj8-_Fw_33_3">3,468</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.96%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><i style="font-style:italic;">The accompanying notes are an integral part of these condensed consolidated financial statements.</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt 0pt 0pt 4.5pt;"><span style="font-style:italic;letter-spacing:0.2pt;margin-left:0pt;visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.28;margin:0pt 0pt 8pt 0pt;"><span style="line-height:1.19;margin-bottom:0pt;visibility:hidden;">&#8203;</span></p></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;">7</p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Catabasis Pharmaceuticals, Inc.</b></p><a id="NotestoCondensedConsolidatedFinancialSta"></a><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Notes to Condensed Consolidated Financial Statements</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt 0pt 12pt 0pt;"><i style="font-style:italic;">(Unaudited)</i></p><a id="_74529089_45c4_4a7a_81f2_95d58a7c3c47"></a><a id="Tc_4wiOjsHFJEaUm48Mz-1aVQ_1_2"></a><a id="Tc_bzwOl_9Ln0aAxoJwvxLkDQ_1_4"></a><a id="Tc_sXjNC1tVf0WC1m54dvrvcw_2_2"></a><a id="Tc_QZlG66_xjUCJJl-mWiA11Q_2_4"></a><a id="Tc_-MFSuslvAEe1YUIuijG_2g_3_2"></a><a id="Tc_SGOVsZ_1AkCZ_p66Eiyl6g_3_4"></a><a id="Tc_F2TH0w5e_Em9puGwT9YZjg_4_2"></a><a id="Tc_LaT_xMR6bUS8XivUVBiezA_4_4"></a><a id="Tc_3t_vMLd9ukiPR2HQBKryig_5_2"></a><a id="Tc_r7n68sSCR0GLg_Zu1sGqeA_5_4"></a><a id="Tc_Y4yYA2Pq3kGcsHevg4hPWg_6_0"></a><a id="Tc_-HEVy7D8r0Kxf55j2zvnxw_7_0"></a><a id="Tc_QZVZSEU_J0ib2XWb44x0zg_8_0"></a><a id="Tc_HfcU21i0yECPJQBMCSS9bw_9_0"></a><ix:nonNumeric contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" name="us-gaap:NatureOfOperations" id="Tb_QF4SWt46r0WSPdv6U9QrYw" continuedAt="Tb_QF4SWt46r0WSPdv6U9QrYw_cont1" escape="true"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">1.</b><b style="font-weight:bold;">&#160;&#160;&#160;&#160;&#160;Organization and Operations</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">The Company</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Catabasis Pharmaceuticals, Inc. (the &#8220;Company&#8221;) is a biopharmaceutical company focused on the discovery, development and commercialization of novel therapeutics. Its mission is to bring hope with life-changing therapies to patients and families. On October 26, 2020, the Company announced that the Phase 3 PolarisDMD trial of the Company&#8217;s previous lead product candidate, edasalonexent, for the treatment of Duchenne muscular dystrophy (DMD) did not meet its primary and secondary endpoints. Based on these results, the Company announced that it was stopping activities related to the development of edasalonexent, including the Company&#8217;s ongoing open-label extension trial. On January 28, 2021, the Company acquired Quellis Biosciences, Inc (&#8220;Quellis&#8221;). The Company&#39;s lead product candidate, which was acquired in the Quellis acquisition, is QLS-215, a monoclonal antibody inhibitor of plasma kallikrein in preclinical development for the treatment of hereditary angioedema, or HAE, a rare, debilitating and potentially life-threatening disease. The Company was incorporated in the State of Delaware on June 26, 2008.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Agreement and Plan of Merger</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">On January 28, 2021, the Company acquired Quellis (the &#8220;Quellis Acquisition&#8221;). Under the terms of the Merger Agreement, the Company issued to the stockholders of Quellis <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_1_28_2021_To_1_28_2021_us-gaap_BusinessAcquisitionAxis_catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_dnJi9OJGYECBD3hp9E7aWA" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:StockIssuedDuringPeriodSharesAcquisitions" scale="0" id="Narr_jOSSSCU8UkqKaJPAOc3CLQ">3,332,669</ix:nonFraction> shares of the Company&#8217;s common stock, par value $<ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="As_Of_1_28_2021_us-gaap_BusinessAcquisitionAxis_catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_f7H1f0bx4EKW45-prxabBA" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:CommonStockParOrStatedValuePerShare" scale="0" id="Narr_gj2oiyR3KEOUjj2sZJYa4A">0.001</ix:nonFraction> per share, and <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_1_28_2021_To_1_28_2021_us-gaap_BusinessAcquisitionAxis_catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_l7QRXvgu-EeTOstEpIxoeQ" decimals="INF" format="ixt:numdotdecimal" name="catb:TemporaryEquityStockIssuedInAcquisitionSharesNewIssues" scale="0" id="Narr_zCggPELMUEaOEe444SPHrg">50,504</ix:nonFraction> shares of newly designated Series X redeemable convertible preferred stock (&#8220;Series X Preferred Stock&#8221;) (as described below). The Series X Preferred Stock had a conversion value on the closing date of $<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_28_2021_To_1_28_2021_us-gaap_BusinessAcquisitionAxis_catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_l7QRXvgu-EeTOstEpIxoeQ" decimals="-5" format="ixt:numdotdecimal" name="catb:TemporaryEquityConversionValue" scale="6" id="Narr_5-0WkUmKokqUzOiiEJ3MEw">122.7</ix:nonFraction> million. In addition, the Company assumed options granted under the Quellis stock option plan, which became options to purchase <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_1_28_2021_To_1_28_2021_us-gaap_BusinessAcquisitionAxis_catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_dnJi9OJGYECBD3hp9E7aWA" decimals="INF" format="ixt:numdotdecimal" name="catb:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionGross" scale="0" id="Narr_QzueBavkO0Oo--rOMu6vQQ">332,494</ix:nonFraction> shares of the Company&#8217;s common stock, a warrant to purchase <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_1_28_2021_us-gaap_BusinessAcquisitionAxis_catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_8FcuO9cxm0-075BMzZ7w3w" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" scale="0" id="Narr_-voRVoMiwU6SfYDbhCUkuw">2,805</ix:nonFraction> shares of Series X Preferred Stock at an exercise price of $<ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="As_Of_1_28_2021_us-gaap_BusinessAcquisitionAxis_catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_8FcuO9cxm0-075BMzZ7w3w" decimals="2" format="ixt:numdotdecimal" name="us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" scale="0" id="Narr_ZCibIeK6kk2SgD4OtI6uEQ">341.70</ix:nonFraction> per share, and a warrant to purchase <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_1_28_2021_us-gaap_BusinessAcquisitionAxis_catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_f7H1f0bx4EKW45-prxabBA" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" scale="0" id="Narr_2JZaHTGeKkOXZbWSdCkI3Q">185,136</ix:nonFraction> shares of the Company&#8217;s common stock at an exercise price of $<ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="As_Of_1_28_2021_us-gaap_BusinessAcquisitionAxis_catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_f7H1f0bx4EKW45-prxabBA" decimals="2" format="ixt:numdotdecimal" name="us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" scale="0" id="Narr_Z_3t4rA0M02Y7vmrmilDTA">0.35</ix:nonFraction> per share, which warrants are exercisable until December 14, 2030. Upon stockholder approval of the Conversion Proposal (as defined below) on June 2, 2021, the warrant to purchase Series X Preferred Stock was converted into the right to purchase <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_2_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_NLEculBhbE-krPpum-kbCA" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" scale="0" id="Narr_z2PTn4LSm0qI_lATA0lEqA">2,805,000</ix:nonFraction> shares of the Company&#8217;s common stock, at a per share exercise price of $<ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="As_Of_6_2_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_NLEculBhbE-krPpum-kbCA" decimals="2" format="ixt:numdotdecimal" name="us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" scale="0" id="Narr_j9kFyxjPSkKCtShIn7d4vg">0.35</ix:nonFraction> per share.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Stock Purchase Agreement and Series X Preferred Stock</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Concurrent with the Quellis Acquisition, the Company entered into a Stock Purchase Agreement (the &#8220;Purchase Agreement&#8221;) with certain institutional and accredited investors. Pursuant to the Purchase Agreement, the Company sold an aggregate of <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_BusinessAcquisitionAxis_catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_SubsidiarySaleOfStockAxis_catb_StockPurchaseAgreementInstitutionalAndAccreditedInvestorsMember_l1QidhRcxUmXDl_HxY7Xdw" decimals="INF" format="ixt:numdotdecimal" name="catb:TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodSharesNewIssues" scale="0" id="Narr_Z7vcj2-ouE6ThOXKIV1-AA">35,573</ix:nonFraction> shares of Series X Preferred Stock for gross proceeds of approximately $<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_BusinessAcquisitionAxis_catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_SubsidiarySaleOfStockAxis_catb_StockPurchaseAgreementInstitutionalAndAccreditedInvestorsMember_l1QidhRcxUmXDl_HxY7Xdw" decimals="-5" format="ixt:numdotdecimal" name="catb:TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodGrossValue" scale="6" id="Narr_YAvXQe7ftUWqN6sDkK98GA">110.0</ix:nonFraction> million, and net proceeds of $<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_BusinessAcquisitionAxis_catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_SubsidiarySaleOfStockAxis_catb_StockPurchaseAgreementInstitutionalAndAccreditedInvestorsMember_l1QidhRcxUmXDl_HxY7Xdw" decimals="-5" format="ixt:numdotdecimal" name="us-gaap:ProceedsFromIssuanceOfPrivatePlacement" scale="6" id="Narr_71T93tCMDUmJRU4zpmkQ8A">104.3</ix:nonFraction> million (the &#8220;February 2021 Financing&#8221;). In accounting for the Purchase Agreement, the Company recorded a beneficial conversion feature of $<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_BusinessAcquisitionAxis_catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember_us-gaap_SubsidiarySaleOfStockAxis_catb_StockPurchaseAgreementInstitutionalAndAccreditedInvestorsMember_8ujy7sXn00Gz_bTluvzDrg" decimals="-5" format="ixt:numdotdecimal" name="us-gaap:AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature" scale="6" id="Narr_6oPWWgnJD0OVQPOUdo_F7A">19.6</ix:nonFraction> million and issuance costs of $<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_BusinessAcquisitionAxis_catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_SubsidiarySaleOfStockAxis_catb_StockPurchaseAgreementInstitutionalAndAccreditedInvestorsMember_l1QidhRcxUmXDl_HxY7Xdw" decimals="-5" format="ixt:numdotdecimal" name="us-gaap:PaymentsOfStockIssuanceCosts" scale="6" id="Narr_LyjqOiAM4UWb0MLjXQueZQ">5.7</ix:nonFraction> million. The combined total was treated as a discount to the value of Series X Preferred Stock, See Note 2 &#8211; &#8220;Summary of Significant Accounting Policies&#8221; for further discussion. </p><ix:nonNumeric contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" name="catb:ScheduleOfPreferredStockOrWarrantsToPurchasePreferredStockTableTextBlock" id="Tb_AsxBjGDqjEyYsFcLNQg3cA" escape="true"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">As a result of the Quellis Acquisition and the February 2021 Financing, in 2021 the Company issued the following Series X Preferred Stock or warrants to purchase Series X Preferred Stock:</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 0pt 36pt;"><span style="margin-left:0pt;visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:12.19%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Series X</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:12.19%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Common Stock</b></p></td></tr><tr><td style="vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Preferred</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:12.19%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Issuable Upon</b></p></td></tr><tr><td style="vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Stock at </b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:12.19%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Conversion at </b></p></td></tr><tr><td style="vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Transaction</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:12.19%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Transaction </b></p></td></tr><tr><td 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style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:12.19%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Date</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Outstanding shares issued in merger</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_2_28_2021_us-gaap_StatementClassOfStockAxis_catb_SharesIssuedInMergerMember_p54OfW2L2U2koev9Tm7BOw" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:TemporaryEquitySharesOutstanding" scale="0" id="Tc_dwurxWeL_kOQHag-Mz8Hcw_6_2">50,504</ix:nonFraction></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:12.19%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_2_28_2021_us-gaap_StatementClassOfStockAxis_catb_SharesIssuedInMergerMember_p54OfW2L2U2koev9Tm7BOw" decimals="INF" format="ixt:numdotdecimal" name="catb:PreferredStockConvertibleSharesIssuable" scale="0" id="Tc_LlWTQb_Zd0CXpwbNWcl_Fg_6_4">50,504,000</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Outstanding shares issued in February 2021 Financing</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_2_28_2021_us-gaap_StatementClassOfStockAxis_catb_SharesIssuedIn2021FinancingMember_A21bjNF-c0CegbLuXnePcg" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:TemporaryEquitySharesOutstanding" scale="0" id="Tc_S-RmHqJpWkqntGj1B3N3sQ_7_2">35,573</ix:nonFraction></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:12.19%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_2_28_2021_us-gaap_StatementClassOfStockAxis_catb_SharesIssuedIn2021FinancingMember_A21bjNF-c0CegbLuXnePcg" decimals="INF" format="ixt:numdotdecimal" name="catb:PreferredStockConvertibleSharesIssuable" scale="0" id="Tc_5aU_PRw4s02R5ILEBf_aKw_7_4">35,573,000</ix:nonFraction></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Warrants assumed in merger</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.87%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_2_28_2021_us-gaap_StatementClassOfStockAxis_catb_WarrantsAssumedInMergerMember_rsZLJUWOJUup3RyqO4BbKA" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:TemporaryEquitySharesOutstanding" scale="0" id="Tc_2Q_P1kQLj0SiUOBUHimNaw_8_2">2,805</ix:nonFraction></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:12.19%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_2_28_2021_us-gaap_StatementClassOfStockAxis_catb_WarrantsAssumedInMergerMember_rsZLJUWOJUup3RyqO4BbKA" decimals="INF" format="ixt:numdotdecimal" name="catb:PreferredStockConvertibleSharesIssuable" scale="0" id="Tc_Aee89Hsb8UKfavL2U1-O-w_8_4">2,805,000</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Total</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.87%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_2_28_2021_8X-4XIOJ9ke1JArCgsrdxw" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:TemporaryEquitySharesOutstanding" scale="0" id="Tc_8NemLWAKWUie3FQ6criZlg_9_2">88,882</ix:nonFraction></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:12.19%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_2_28_2021_8X-4XIOJ9ke1JArCgsrdxw" decimals="INF" format="ixt:numdotdecimal" name="catb:PreferredStockConvertibleSharesIssuable" scale="0" id="Tc_0mVAhGn74EW3-x_AVdtbqA_9_4">88,882,000</ix:nonFraction></p></td></tr></table></ix:nonNumeric><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">At its 2021 Annual Meeting of Stockholders on June 2, 2021, the Company&#8217;s stockholders approved the conversion of the Company&#8217;s Series X Preferred Stock into shares of the Company&#8217;s common stock in accordance with Nasdaq Listing Rule 5635(a) (the &#8220;Conversion Proposal&#8221;). Following stockholder approval of the Conversion Proposal, each share of Series X Preferred Stock then </p></ix:nonNumeric></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;">8</p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><ix:continuation id="Tb_QF4SWt46r0WSPdv6U9QrYw_cont1" continuedAt="Tb_QF4SWt46r0WSPdv6U9QrYw_cont2"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;">outstanding automatically converted into <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_6_2_2021_To_6_2_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_483oUAtqt0ulJIXWoEicdA" decimals="INF" format="ixt:numdotdecimal" name="catb:TemporaryEquityConversionBasis" scale="0" id="Narr_6me2JVE_jUSsVb98O2j1Dg">1,000</ix:nonFraction> shares of the Company&#8217;s common stock, subject to certain beneficial ownership limitations, including that a holder of Series X Preferred Stock is prohibited from converting shares of Series X Preferred Stock into shares of the Company&#8217;s common stock if, as a result of such conversion, such holder, together with its affiliates, would beneficially own more than a specified percentage (to be initially set at <ix:nonFraction unitRef="Unit_Standard_pure_41quVlPrd0qmkw4cS8TMkQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="4" format="ixt:numdotdecimal" name="catb:PercentageOfOwnershipOnCommonStockIssuedAndOutstandingImmediatelyAfterConversionInitially" scale="-2" id="Narr_IMaWeJpmq0e9Ch4YS084lw">9.99</ix:nonFraction>% and thereafter adjustable by the holder to a number between <ix:nonFraction unitRef="Unit_Standard_pure_41quVlPrd0qmkw4cS8TMkQ" contextRef="As_Of_6_30_2021_srt_RangeAxis_srt_MinimumMember_b00LaYktT0aOzEZB_Yi3WA" decimals="4" format="ixt:numdotdecimal" name="catb:PercentageOfOwnershipOnCommonStockIssuedAndOutstandingImmediatelyAfterConversionThereafter" scale="-2" id="Narr_rk78RZsuN0at2zBCayxZmA">4.99</ix:nonFraction>% and <ix:nonFraction unitRef="Unit_Standard_pure_41quVlPrd0qmkw4cS8TMkQ" contextRef="As_Of_6_30_2021_srt_RangeAxis_srt_MaximumMember_ifSyjMMHa0-RGKHuadmMww" decimals="4" format="ixt:numdotdecimal" name="catb:PercentageOfOwnershipOnCommonStockIssuedAndOutstandingImmediatelyAfterConversionThereafter" scale="-2" id="Narr__O-QkLjpXUeA-eDxrYz2og">19.99</ix:nonFraction>%) of the total number of shares of the Company&#8217;s common stock issued and outstanding immediately after giving effect to such conversion. As of June 30, 2021, <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_6_30_2021_To_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_BsSCvjCPd0m3lYqzqoU2yw" decimals="INF" format="ixt:numdotdecimal" name="catb:StockIssuedDuringPeriodSharesIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares" scale="0" id="Narr_eDHwXhQaO0aE3aSCdbN1DA">53,532</ix:nonFraction> shares of Series X Preferred Stock were converted into <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_6_30_2021_To_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_BsSCvjCPd0m3lYqzqoU2yw" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities" scale="0" id="Narr_xHYD7xVhqEOvjY8ify1zQw">53,531,797</ix:nonFraction> shares of common stock and <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_7RZZjXZTlEWngOvK16UXcg" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:PreferredStockSharesOutstanding" scale="0" id="Narr_5rD0D9fODkSI1StvKyLbgw">32,545</ix:nonFraction> shares of Series X Preferred Stock remained outstanding. Outstanding shares of Series X Preferred Stock are subject to conversion at the option of the holder.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Prior to stockholder approval of the Conversion Proposal, the terms of the Series X Preferred Stock included a cash redemption feature. This cash redemption feature resulted in substantial doubt about the Company&#8217;s ability to continue as a going concern as disclosed in the Company&#8217;s annual report on Form 10-K for the year ended December 31, 2020 (the &#8220;2020 Annual Report on Form 10-K&#8221;) and the Company&#8217;s quarterly report on Form 10-Q for the three months ended March 31, 2021. &#160;Upon stockholder approval of the Conversion Proposal, the cash redemption feature was eliminated and, consequently, there is no longer substantial doubt about the Company&#8217;s ability to continue as a going concern for at least twelve months subsequent to the issuance of these financial statements.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Holders of Series X Preferred Stock are entitled to receive dividends, subject to certain beneficial ownership limitations, on shares of Series X Preferred Stock equal, on an as-if-converted-to-common-stock basis, and in the same form as dividends actually paid on shares of the Company&#8217;s common stock. Except as otherwise required by law, the Series X Preferred Stock does not have voting rights. However, as long as any shares of Series X Preferred Stock are outstanding, the Company may not, without the affirmative vote of the holders of a majority of the then outstanding shares of the Series X Preferred Stock, (i) alter or change adversely the powers, preferences or rights given to the Series X Preferred Stock or alter or amend the Certificate of Designation that authorized the Series X Preferred Stock, amend or repeal any provision of, or add any provision to, the Company&#8217;s Certificate of Incorporation or bylaws, or file any articles of amendment, certificate of designations, preferences, limitations and relative rights of any series of preferred stock, if such action would adversely alter or change the preferences, rights, privileges or powers of, or restrictions provided for the benefit of the Series X Preferred Stock, (ii) issue further shares of Series X Preferred Stock or increase or decrease (other than by conversion) the number of authorized shares of Series X Preferred Stock, or (iii) enter into any agreement with respect to any of the foregoing.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">January 2020 Financing</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">On January 30, 2020, the Company entered into an underwriting agreement with Oppenheimer &amp; Co. Inc. relating to an underwritten public offering (the &#8220;January 2020 Financing&#8221;) of <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_1_1_2020_To_1_31_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_us-gaap_SubsidiarySaleOfStockAxis_catb_UnderwritingPublicOffering2020Member_ehH92wvX5EelzcSuWEomZA" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:StockIssuedDuringPeriodSharesNewIssues" scale="0" id="Narr_5aPZaZhE4E-kXunBATejHA">5,290,000</ix:nonFraction> shares of common stock at a price to the public of $<ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="As_Of_1_31_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_us-gaap_SubsidiarySaleOfStockAxis_catb_UnderwritingPublicOffering2020Member_4pT12jf-Y0S5E8-rqYzQeA" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:SharesIssuedPricePerShare" scale="0" id="Narr_MeTjvdHODEi0s9eDOzzMHw">5.00</ix:nonFraction> per share, including <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_1_1_2020_To_1_31_2020_srt_CounterpartyNameAxis_catb_OppenheimerCo.IncMember_us-gaap_SubsidiarySaleOfStockAxis_catb_UnderwritingPublicOffering2020Member_IVkUofSwKk2gSkylZhk4ug" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:StockIssuedDuringPeriodSharesNewIssues" scale="0" id="Narr_PID8ZL4cw0SEWsZ4qnYMKA">690,000</ix:nonFraction> shares issued upon the exercise in full by Oppenheimer &amp; Co. Inc. of its overallotment option. This resulted in gross proceeds of $<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_1_31_2020_us-gaap_SubsidiarySaleOfStockAxis_catb_UnderwritingPublicOffering2020Member_kRDnnYAliUay62zrTJYQjw" decimals="-5" format="ixt:numdotdecimal" name="us-gaap:SaleOfStockConsiderationReceivedOnTransaction" scale="6" id="Narr_8CXi60Z9sU6_hIgPgnWcxA">26.5</ix:nonFraction> million, and net proceeds of $<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_1_31_2020_us-gaap_SubsidiarySaleOfStockAxis_catb_UnderwritingPublicOffering2020Member_kRDnnYAliUay62zrTJYQjw" decimals="-5" format="ixt:numdotdecimal" name="us-gaap:ProceedsFromIssuanceOfCommonStock" scale="6" id="Narr_HEBWKpQs7UiEIsTbXmzx8w">24.6</ix:nonFraction> million.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Liquidity</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">The Company has entered into various sales agreements with Cowen and Company LLC (&#8220;Cowen&#8221;), pursuant to which the Company could issue and sell shares of common stock under at-the-market offering programs. On May 20, 2021, the Company terminated its sales agreement with Cowen. On June 30, 2021, the Company entered into an Open Market Sale Agreement<sup style="font-size:7.5pt;line-height:100%;top:0pt;vertical-align:top;">SM</sup> with Jefferies LLC (&#8220;Jefferies&#8221;), pursuant to which the Company could issue and sell shares of common stock of up to $<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_srt_CounterpartyNameAxis_catb_JefferiesMember_us-gaap_SubsidiarySaleOfStockAxis_catb_AtMarketOfferingMember_wtQzvBj94kWG_Ava4QOtWg" decimals="-5" format="ixt:numdotdecimal" name="catb:CommonStockSaleAgreementValue" scale="6" id="Narr_ocmSJWF_ok2g6Au6uUyRBg">25.0</ix:nonFraction> million under at-the-market offering programs (collectively, with the Cowen at-the-market offering program, the &#8220;ATM Programs&#8221;). The Company pays <ix:nonFraction unitRef="Unit_Standard_pure_41quVlPrd0qmkw4cS8TMkQ" contextRef="Duration_1_1_2021_To_6_30_2021_srt_CounterpartyNameAxis_catb_CowenAndCompanyLLCMember_eeRpg29XF0aCrbxUjdb3QQ" decimals="INF" format="ixt:numdotdecimal" name="catb:PercentageOfCommissionPaidToUnderwriterBasedOnProceedsFromOffering" scale="-2" id="Narr_zLkii3o7rEmVOBajhEfUUw">3</ix:nonFraction>% of the gross proceeds from any common stock sold through the ATM Programs. As of June 30, 2021, the Company has not sold any shares of common stock pursuant to the Jeffries agreement and $<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_srt_CounterpartyNameAxis_catb_JefferiesMember_yUvhSNrwE06yYwK723ytUw" decimals="-5" format="ixt:numdotdecimal" name="catb:RemainingAvailableUnderCurrentSalesAgreement" scale="6" id="Narr_9wZdmj6kCk2DlxY1m75iNg">25.0</ix:nonFraction> million of common stock remains available for sale under the Jefferies agreement.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">During the six months ended June 30, 2020, the Company sold an aggregate of <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_1_1_2020_To_6_30_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_us-gaap_SubsidiarySaleOfStockAxis_catb_AtMarketOfferingMember_XTRJ3Wixe0y8NKGIu2kCGQ" decimals="INF" format="ixt:numdotdecimal" name="catb:StockIssuedDuringPeriodSharesNewIssuesAtMarketOfferings" scale="0" id="Narr_eDLkgzy9DU2yj988jOPTzw">1,100,001</ix:nonFraction> shares of common stock pursuant to the ATM Programs, at an average price of $<ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="As_Of_6_30_2020_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_us-gaap_SubsidiarySaleOfStockAxis_catb_AtMarketOfferingMember_mx2vCNIG3EiJF9hTjajRtg" decimals="2" format="ixt:numdotdecimal" name="us-gaap:SharesIssuedPricePerShare" scale="0" id="Narr_-qWB5fs_J0uVi3dUFoQIvQ">6.87</ix:nonFraction> per share, for net proceeds of $<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_us-gaap_SubsidiarySaleOfStockAxis_catb_AtMarketOfferingMember_edTFu1zoh0CZW5lqxa2S8Q" decimals="-5" format="ixt:numdotdecimal" name="us-gaap:ProceedsFromIssuanceOfCommonStock" scale="6" id="Narr_qw8aJHDDOUqZYlEkOHdhEw">7.3</ix:nonFraction> million after deducting sales commissions and offering expenses. There was no activity from the ATM Programs during the six months ended June 30, 2021.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">As of June 30, 2021, the Company had an accumulated deficit of $<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-5" format="ixt:numdotdecimal" name="us-gaap:RetainedEarningsAccumulatedDeficit" sign="-" scale="6" id="Narr_pj0LVzWZlkWZ37rJKYyHWg">438.4</ix:nonFraction> million and had available cash and cash equivalents of $<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-5" format="ixt:numdotdecimal" name="us-gaap:CashAndCashEquivalentsAtCarryingValue" scale="6" id="Narr_X9qClMq9wEeXzCYrfUSvDA">139.5</ix:nonFraction> million. The Company has been primarily involved with research and development activities and has incurred operating losses and negative cash flows from operations since its inception. The Company has not generated any product revenues and has financed its operations primarily through public offerings and private placements of its equity securities. There can be no assurance that the Company will be able to obtain additional debt, equity or other financing or generate product revenue or revenues from collaborative partners, on </p></ix:continuation></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;">9</p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><ix:continuation id="Tb_QF4SWt46r0WSPdv6U9QrYw_cont2"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;">terms acceptable to the Company, on a timely basis or at all. The failure of the Company to obtain sufficient funds on acceptable terms when needed could have a material adverse effect on the Company&#39;s business, results of operations, and financial condition.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The Company is subject to a number of risks similar to other life science companies, including, but not limited to, successful discovery and development of its drug candidates, raising additional capital, development by its competitors of new technological innovations, protection of proprietary technology and regulatory approval and market acceptance of the Company&#39;s products. The Company has been primarily involved with research and development activities and has incurred operating losses and negative cash flows from operations since its inception. The Company anticipates that it will continue to incur significant operating losses for the next several years as it continues to develop its product candidates.</p></ix:continuation><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><ix:nonNumeric contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" name="us-gaap:SignificantAccountingPoliciesTextBlock" id="Tb_X50iDv3k_kCSV-wPnLCzfA" continuedAt="Tb_X50iDv3k_kCSV-wPnLCzfA_cont1" escape="true"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">2.&#160;&#160;&#160;&#160;&#160;</b><b style="font-weight:bold;">Summary of Significant Accounting Policies</b></p><ix:nonNumeric contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" name="us-gaap:BasisOfAccountingPolicyPolicyTextBlock" id="Tb_OYKhbU_1tk6ZSmKH4CRPrg" escape="true"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Basis of Presentation and Principles of Consolidation</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">The accompanying financial statements and the related disclosures are unaudited and have been prepared in accordance with United States generally accepted accounting principles (&#8220;U.S. GAAP&#8221;). Additionally, certain information and footnote disclosures normally included in the Company&#8217;s annual financial statements have been condensed or omitted from this report. Accordingly, these condensed financial statements should be read in conjunction with the financial statements as of and for the year ended December 31, 2020 and notes thereto included in the 2020 Annual Report on Form 10-K.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">The unaudited interim condensed consolidated financial statements have been prepared on the same basis as the audited financial statements. In the opinion of the Company&#8217;s management, the accompanying unaudited interim condensed consolidated financial statements contain all adjustments, including those adjustments that are of a normal and recurring nature, which are necessary to fairly present the Company&#8217;s results for the interim periods presented. The results for the three and six months ended June 30, 2021 are not necessarily indicative of the results for the year ending December 31, 2021, or for any future period.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">The accompanying condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries, Catabasis Securities Corporation and Quellis Biosciences, LLC, successor in interest to Quellis. All intercompany balances and transactions have been eliminated in consolidation.</p></ix:nonNumeric><ix:nonNumeric contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" name="us-gaap:UseOfEstimates" id="Tb_TmcmZjsI3Uy2so-6y7utRQ" escape="true"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Use of Estimates</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">The preparation of the Company&#8217;s condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Actual results could differ from such estimates.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The Company utilizes certain estimates to record expenses relating to research and development contracts. These contract estimates, which are primarily related to the length of service of each contract and the amount of service provided as of each measurement date, are determined by the Company based on input from internal project management, as well as from the Company&#8217;s service providers.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></ix:nonNumeric><ix:nonNumeric contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" name="us-gaap:EarningsPerSharePolicyTextBlock" id="Tb_UzEW05Wj8kCDGOdet_TlPQ" continuedAt="Tb_UzEW05Wj8kCDGOdet_TlPQ_cont1" escape="true"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Net Loss Per Share</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Basic net loss per share is calculated by dividing net loss attributable to common shareholders by the weighted average shares outstanding during the period, without consideration for common stock equivalents. Diluted net loss per share is calculated by adjusting weighted average shares outstanding for the dilutive effect of common stock equivalents outstanding for the period, determined using the treasury-stock method. For purposes of the Company&#8217;s dilutive net loss per share calculation, preferred stock, stock options and warrants to purchase common stock and preferred stock were considered to be common stock equivalents but were excluded from the calculation of diluted net loss per share, as their effect would be anti-dilutive; therefore, basic and diluted net loss per share were the same for all periods presented. </p></ix:nonNumeric></ix:nonNumeric></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;">10</p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;min-height:10.35pt;"><a id="_01a979d0_279c_408a_9117_48d68501ecff"></a><a id="Tc_y3-sXWqxFEOv294eUZKMDQ_1_2"></a><a id="Tc_Ku8nVmzJT0Gb3vROi4U4kA_2_2"></a><a id="Tc_F-c-jUtVm0KjgSWWbRschw_2_4"></a><a id="Tc_lnQxXno4EEO_xEF2TXdNCw_3_0"></a><a id="Tc_rrnBFuwJq02xQWmoIJnGLw_3_4"></a><a id="Tc_4Z3p_SlQNEGaJk2eqRYcoQ_4_0"></a><a 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contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" name="us-gaap:CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy" id="Tb_-noXyL6kWEy8MBVpuA_uaA" escape="true"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-style:italic;font-weight:bold;visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Cash,&#160;Cash&#160;Equivalents and Restricted Cash</span></p><ix:nonNumeric contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" name="us-gaap:ScheduleOfRestrictedCashAndCashEquivalentsTextBlock" id="Tb_g4q-TcwM706PeSZb2kPqRg" escape="true"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The reconciliation of cash, cash equivalents and restricted cash reported within the applicable balance sheet that sum to the total of the same such amount shown in the statement of cash flows is as follows (in thousands):</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.23%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="5" style="vertical-align:bottom;white-space:nowrap;width:23.76%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">June&#160;30,&#160;</b></p></td></tr><tr><td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.71%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2021</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2020</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Cash&#160;and&#160;cash&#160;equivalents</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.23%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:CashAndCashEquivalentsAtCarryingValue" scale="3" id="Tc_SWceidSJgE6ghpKzLQSiNA_3_3">139,520</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2020_7-tEzvs8REmFsM1C9uDqhA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:CashAndCashEquivalentsAtCarryingValue" scale="3" id="Tc_VsEh_FFcZkmEJQ4Fb1d3-Q_3_6">51,885</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Restricted&#160;cash&#160;(1)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.23%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:RestrictedCashAndCashEquivalents" scale="3" id="Tc_R6OjXgfiDUObvCuyBXB1Cw_4_3">121</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2020_7-tEzvs8REmFsM1C9uDqhA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:RestrictedCashAndCashEquivalents" scale="3" id="Tc__VOUxzIkdkSVYVzKw93GCQ_4_6">235</ix:nonFraction></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Total</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.23%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" scale="3" id="Tc_A4-7kpo2TEC-ZYrAzt-Ffg_5_3">139,641</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2020_7-tEzvs8REmFsM1C9uDqhA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" scale="3" id="Tc_q0DO1-nVG02uVz95mxWcMw_5_6">52,120</ix:nonFraction></p></td></tr></table><div style="font-family:'Times New Roman','Times','serif';font-size:9.0pt;margin-bottom:0pt;margin-left:54pt;min-height:1.19em;position:relative;width:100%;"><div style="background-color:#000000;height:1pt;position:relative;top:0.6em;width:25.0%;border:none;margin:0 auto 0 0;"></div></div><p style="font-family:'Times New Roman','Times','serif';font-size:9pt;line-height:1.19;text-align:justify;margin:0pt 0pt 0pt 54pt;">(1)&#160;&#160;&#160;&#160;Included in prepaid expenses and other current assets and other assets.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><span style="font-size:9pt;visibility:hidden;">&#8203;</span></p></ix:nonNumeric></ix:nonNumeric><ix:nonNumeric contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" name="us-gaap:InProcessResearchAndDevelopmentPolicy" id="Tb_Gx52O3vYLEiS7GVJeIQAWA" escape="true"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Acquired In-Process Research and Development</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">The Company measures and recognizes asset acquisitions that are not deemed to be business combinations based on the cost to acquire the assets, which includes transaction costs. Goodwill is not recognized in asset acquisitions. In an asset acquisition, the cost allocated to acquire in-process research and development (&#8220;IPR&amp;D&#8221;) with no alternative future use is charged to expense at the acquisition date. Refer to Note 3, &#8220;Acquisition of Quellis&#8221; for a more detailed description of the accounting policy utilized for the recent asset acquisition.</p></ix:nonNumeric><ix:nonNumeric contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" name="catb:PreferredStockDiscountPolicyTextBlock" id="Tb_r9y9dRZny0udZLC1v0Fg9Q" escape="true"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Preferred Stock Discount</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">As discussed above, in February 2021, the Company issued Series X Preferred Stock in a private placement transaction. It was determined that this transaction resulted in recognition of a beneficial conversion feature, which was valued based on the difference between the price of the shares of common stock on the date of commitment and the conversion price on the closing date, resulting in a total value of $<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_SubsidiarySaleOfStockAxis_us-gaap_PrivatePlacementMember_azdd6LDZiEmj0Pq44b6DUg" decimals="-5" format="ixt:numdotdecimal" name="us-gaap:AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature" scale="6" id="Narr_Htex2F7mS0yuD9qapq-67Q">19.6</ix:nonFraction> million. Additionally, the Company incurred total issuance costs of $<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_SubsidiarySaleOfStockAxis_us-gaap_PrivatePlacementMember_azdd6LDZiEmj0Pq44b6DUg" decimals="-5" format="ixt:numdotdecimal" name="us-gaap:PaymentsOfStockIssuanceCosts" scale="6" id="Narr_A0OTD36TYEO5tpkLeeJ-cQ">5.7</ix:nonFraction> million related to the private placement. Both of these features were taken as a discount on Series X Preferred Stock recognized at the close of the transaction. These features are analogous to preferred dividends and are recorded as a non-cash return to holders of Series X Preferred Stock through additional paid in capital. The discount related to the beneficial conversion feature is recognized through the earliest possible date of conversion, which occurred upon the shareholder approval of the conversion in June 2021. The issuance costs are recognized as a dividend at the time of conversion to common shares. As of June 30, 2021, $<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_us-gaap_SubsidiarySaleOfStockAxis_us-gaap_PrivatePlacementMember_azdd6LDZiEmj0Pq44b6DUg" decimals="-5" format="ixt:numdotdecimal" name="catb:NonCashReturnRelatedToCommonStock" scale="6" id="Narr_RKcHM6ehjU2RlE-8hx2Nqw">24.4</ix:nonFraction> million of the above amounts were accounted for as a non-cash return related to shares of Series X Preferred Stock.</p></ix:nonNumeric><ix:nonNumeric contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" name="us-gaap:NewAccountingPronouncementsPolicyPolicyTextBlock" id="Tb_Y1PXNAbAf0WoR3RwFcQBnA" continuedAt="Tb_Y1PXNAbAf0WoR3RwFcQBnA_cont1" escape="true"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Recent&#160;Accounting&#160;Pronouncements - Not Yet Adopted</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board (&#8220;FASB&#8221;) or other standard setting bodies and adopted by the Company as of the specified effective date.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">In June 2016, the FASB issued Accounting Standards Update (&#8220;ASU&#8221;) 2016-13, <i style="font-style:italic;">Financial Instruments-Credit Losses</i> (Topic 326). This standard requires a financial asset to be presented at amortized cost basis at the net amount expected to be collected. It also requires that credit losses relating to available-for-sale debt securities should be recorded through an allowance for credit losses. In November 2019, the FASB issued an amendment making this ASU effective for annual reporting periods beginning after December 15, 2022 for </p></ix:nonNumeric></ix:continuation></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;">11</p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><ix:continuation id="Tb_X50iDv3k_kCSV-wPnLCzfA_cont2"><ix:continuation id="Tb_Y1PXNAbAf0WoR3RwFcQBnA_cont1"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;">smaller reporting companies, early adoption is permitted. The Company is currently evaluating the impact that this standard will have on its consolidated financial statements.</p></ix:continuation><ix:nonNumeric contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" name="catb:SummaryOfSignificantAccountingPoliciesPoliciesTextBlock" id="Tb_ctmX7CaJ9EyRCGJsYoQL_w" escape="true"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Summary&#160;of Significant&#160;Accounting Policies</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The Company&#8217;s significant accounting policies are described in Note 2, &#8220;Summary of Significant Accounting Policies,&#8221; in the Company&#8217;s 2020 Annual Report on Form 10-K, and there were no significant changes to such policies in the three and six months ended June 30, 2021 that had a material impact on the Company&#8217;s results of operations or financial position.</p></ix:nonNumeric></ix:continuation><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p><a id="Tc_-1KA9XkOLUmnryASKh4Nzg_1_0"></a><a id="Tc_x_BKzHgXQ0CeeyhR2PCOOA_1_2"></a><a id="Tc_RXEx7VE74EW8RSQaDmz0LA_2_0"></a><a id="Tc_E2GUGSNehEKbYO2lYUOB4g_3_0"></a><a id="Tc_05fohNPQmEawsu4DMNlZUA_4_0"></a><a id="Tc_UgT_fk2IUEqjTgORP3H6Lg_5_0"></a><a id="Tc_Pg0fWQxrV0i3F-edCMK4CA_6_0"></a><a id="Tc_LgWhXSBXWkaz3anqBMx5BA_6_2"></a><ix:nonNumeric contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" name="us-gaap:BusinessCombinationDisclosureTextBlock" id="Tb_aWzRxQyvFUejX8f0mFNuFQ" escape="true"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">3.&#160;&#160;&#160;&#160;&#160;Acquisition of Quellis</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">On January 28, 2021, the Company completed its acquisition of Quellis in accordance with the terms of the Merger Agreement as discussed in Note 1, &#8220;Organization and Operations&#8221;<i style="font-style:italic;">.</i> Under the terms of the Merger Agreement, the Company issued <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_1_28_2021_To_1_28_2021_us-gaap_BusinessAcquisitionAxis_catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_dnJi9OJGYECBD3hp9E7aWA" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:StockIssuedDuringPeriodSharesAcquisitions" scale="0" id="Narr_THQghVDoIEiEbIHKwIh-RA">3,332,669</ix:nonFraction> shares of Common Stock and <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_1_28_2021_To_1_28_2021_us-gaap_BusinessAcquisitionAxis_catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_l7QRXvgu-EeTOstEpIxoeQ" decimals="INF" format="ixt:numdotdecimal" name="catb:TemporaryEquityStockIssuedInAcquisitionSharesNewIssues" scale="0" id="Narr_qkvAEmzGEE6euo9v8Oeqfw">50,504</ix:nonFraction> shares of Series X Preferred Stock. 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style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.87%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.8%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_1_28_2021_us-gaap_BusinessAcquisitionAxis_catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember_yzWqXYBKQku4pfDahET_mA" decimals="-3" format="ixt:numdotdecimal" name="catb:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherThanIntangibleAssetsAndDeferredTaxLiabilities" scale="3" id="Tc_tIU_BjAtCkqKZmnQKGi9nw_6_3">170,681</ix:nonFraction></p></td></tr></table></ix:continuation><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">In the estimation of fair value of the asset purchase consideration, the Company used the carrying value of the cash and cash equivalents, prepaid expenses, accounts payable and accrued liabilities as the most reliable indicator of fair value based on the associated short-term nature of the balances. The remaining fair value was attributable to the acquired IPR&amp;D. As QLS-215 had not, at the time of the Quellis Acquisition, received regulatory approval in any territory, the cost attributable to the IPR&amp;D was expensed in the Company&#8217;s consolidated statements of operations and comprehensive loss for the six months ended June 30, 2021 as the acquired IPR&amp;D had no alternative future use, as determined by the Company in accordance with U.S. GAAP.</p></ix:nonNumeric><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><span style="background-color:#00ff00;font-size:1pt;visibility:hidden;">&#8203;</span></p><a id="_fd8733ca_bcef_4603_b19f_abd80c0012a6"></a><a id="_fd8733ca_bcef_4603_b19f_abd80c0012a6_2"></a><a id="_fd8733ca_bcef_4603_b19f_abd80c0012a6_3"></a><a id="_fd8733ca_bcef_4603_b19f_abd80c0012a6_4"></a><a id="_fd8733ca_bcef_4603_b19f_abd80c0012a6_5"></a><a id="_abd755bb_f052_4377_9302_dfc357b55216"></a><a id="_abd755bb_f052_4377_9302_dfc357b55216_2"></a><a id="_abd755bb_f052_4377_9302_dfc357b55216_3"></a><a id="_abd755bb_f052_4377_9302_dfc357b55216_4"></a><a id="_abd755bb_f052_4377_9302_dfc357b55216_5"></a><a id="_529b9ded_947b_45e9_a5fb_0dcbadc292d4"></a><a id="_529b9ded_947b_45e9_a5fb_0dcbadc292d4_2"></a><a id="_529b9ded_947b_45e9_a5fb_0dcbadc292d4_3"></a><a id="_529b9ded_947b_45e9_a5fb_0dcbadc292d4_4"></a><a id="_529b9ded_947b_45e9_a5fb_0dcbadc292d4_5"></a><ix:nonNumeric contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" name="us-gaap:FairValueDisclosuresTextBlock" id="Tb_2Qa90d_W8EayizmqDDswfw" continuedAt="Tb_2Qa90d_W8EayizmqDDswfw_cont1" escape="true"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">4.&#160;&#160;&#160;&#160;Financial Instruments</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">The tables below present information about the Company&#8217;s assets and liabilities that are measured at fair value on a recurring basis as of June 30, 2021 and December 31, 2020 and indicate the fair value hierarchy of the valuation techniques the Company utilized to determine such fair value. In general, fair values determined by Level 1 inputs utilize observable inputs such as quoted prices in active markets for identical assets or liabilities. Fair values determined by Level 2 inputs utilize data points that are either directly or indirectly observable, such as quoted prices, interest rates and yield curves. Fair values determined by Level 3 inputs utilize unobservable data points for which there is little or no market data, which require the Company to develop its own assumptions for the asset or liability. There were <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2020_7-tEzvs8REmFsM1C9uDqhA" decimals="-3" format="ixt-sec:numwordsen" name="us-gaap:FairValueAssetsLevel1ToLevel2TransfersAmount" scale="3" id="Narr_-Yt-Ww_fIUCXA46oNo8q8A"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2020_7-tEzvs8REmFsM1C9uDqhA" decimals="-3" format="ixt-sec:numwordsen" name="us-gaap:FairValueAssetsLevel1ToLevel2TransfersAmount" scale="3" id="Narr_Y1pXjHIJskWe85adAYsmbg"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt-sec:numwordsen" name="us-gaap:FairValueAssetsLevel1ToLevel2TransfersAmount" scale="3" id="Narr_C2QdW-Cdtka5igR0G5Kc5Q"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt-sec:numwordsen" name="us-gaap:FairValueAssetsLevel1ToLevel2TransfersAmount" scale="3" id="Narr_wZcrV1_8Xki8C_dltRnPTw">no</ix:nonFraction></ix:nonFraction></ix:nonFraction></ix:nonFraction> transfers between fair value measurement levels during the three and six months ended June 30, 2021 or 2020.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The Company&#8217;s investment portfolio may include fixed income securities that do not always trade on a daily basis. As a result, the pricing services used by the Company apply other available information as applicable through processes such as benchmark yields, benchmarking of like securities, sector groupings and matrix pricing to prepare valuations. The Company validates the prices provided by its third party pricing services by obtaining market values from other pricing sources and analyzing pricing data in certain instances. The Company has from time to time invested in certain reverse repurchase agreements which are collateralized by deposits in the form of U.S. Government Securities and Obligations for an amount no less than <ix:nonFraction unitRef="Unit_Standard_pure_41quVlPrd0qmkw4cS8TMkQ" contextRef="Duration_1_1_2021_To_6_30_2021_srt_RangeAxis_srt_MinimumMember_us-gaap_CollateralAxis_us-gaap_CollateralPledgedMember_us-gaap_FinancialInstrumentAxis_catb_ReverseRepurchaseAgreementsMember_LcFMj3T8lkOkdnhiKq_VZw" decimals="2" format="ixt:numdotdecimal" name="catb:PercentageOfInvestmentAmountToCollateralizedDepositsValue" scale="-2" id="Narr_E1DS-li5V0m5q8G5ldMXUA">102</ix:nonFraction>% of their value. The Company has not recorded an asset </p></ix:nonNumeric></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;">12</p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><a id="_513edd7a_0403_4a33_97c0_1b66ae5c9438"></a><a id="Tc_KD6FAMRbWky_Z7JFUMd3-A_1_2"></a><a id="Tc_jYZ5CnHRkkyKMhW_BCWeZw_2_2"></a><a id="Tc_Iu16UUmGJ0KYwpzkF3wkZA_2_5"></a><a id="Tc_hiDBPx5yV0KLrQGgHQO3uQ_2_8"></a><a id="Tc_mfC8vCrdUkSi-WQPVQ81Ww_3_2"></a><a id="Tc_zHumGq3Rukuvu-XePSteig_3_5"></a><a id="Tc_5utR9EsUn0eAzNSzNvSdkw_3_8"></a><a id="Tc_ghsqj_JraECZdpc64oC-2A_4_2"></a><a id="Tc_rDvj--wHq0K7HA9fHyfGGQ_4_5"></a><a id="Tc_ilPjM8hIJE2IjUJY777_Xg_4_8"></a><a id="Tc_0-0VUTmOWE6M-JOOK__PAA_5_2"></a><a id="Tc_u86xZdXzFk2u2k6o0igjaw_5_5"></a><a id="Tc_Nwz_k4IwKUCdc1Yq4qOwNQ_5_8"></a><a id="Tc_nr6VUrJlCESL8K0xtxH6jg_5_11"></a><a id="Tc_LBbyeQneOUyt0pYPdnl-fg_6_0"></a><a id="Tc_f9_sd6atVUG7E5XicjzV-w_7_0"></a><a id="Tc_UJM01KVs7UK3BY6BVSTkLg_8_0"></a><a id="Tc_sry6Hpa65EyzlBHqbFTeHw_8_2"></a><a id="Tc_df38KTB4bkW3SDxrJccclQ_8_5"></a><a id="Tc_CekFrsxdrkuhtSzP4WTfeg_8_6"></a><a id="Tc_1e9eNoTeaEKSvbXJ2XKhwQ_8_8"></a><a id="Tc_K58-RQxnEkqHBGvf3B5EhA_8_9"></a><a id="Tc_OchSyNU_EkyTYhk8jus3LA_8_11"></a><a id="Tc_FkBPQlK81US31Y49VbpYqw_9_0"></a><a id="Tc_wY17vJwWS0O-ZYFQOlPwZw_9_3"></a><a id="Tc_iKcs-fjyak2OjAYeVFQxWw_9_9"></a><a id="Tc_6AbbrTOM2UCo0hFUOW-sFA_10_0"></a><a id="Tc_SfiUL7ntR0e-5knyqQWoJw_10_2"></a><a id="Tc_DiWHwwYHLEabtdWUAwaHqg_10_5"></a><a id="Tc_37r-fHJcRUipScnqAKbA6A_10_8"></a><a id="Tc_DKa8DYNIL06y_-1wqczj8Q_10_9"></a><a id="Tc_gElqGHYmeEqgaC_T-RKAwA_10_11"></a><a id="_9a093b0e_16a3_45de_a6e3_cc1e490947f9"></a><a id="Tc_Aru2pzdR0kqYk1iWreelLg_1_2"></a><a id="Tc_RLNJejcF1EGAJEJNdb8oPg_2_2"></a><a id="Tc_UGkj8DFRwkmLTYD0Ltuh4w_2_5"></a><a id="Tc_3SlixZRwFkS3GJ_TmhbhKw_2_8"></a><a id="Tc_4OzpTIuirkaauI1AZcKP4A_3_2"></a><a id="Tc_piRmW_PHKke_XZaNeOjzJg_3_5"></a><a id="Tc_NzDHQ7E1CESv5EWF73YTCA_3_8"></a><a id="Tc_F5IObPFTzUS0jLShGbzd4g_4_2"></a><a id="Tc_J0_0F3EWxEOgrZHk44TbiA_4_5"></a><a id="Tc_JQf6xeZRZke9NrNZlIJv_Q_4_8"></a><a id="Tc_Mk0qAkF4yUeiHuJL620LQA_5_2"></a><a id="Tc_cSadxOnfn0y_iR18uqhcFw_5_5"></a><a id="Tc_WeiHXX7SQ0yPWJq8h3_cdQ_5_8"></a><a id="Tc_4ANexD8aNUuCa3b0f-rQoA_5_11"></a><a id="Tc_li1M144ljUCkpO_mPtFs7Q_6_0"></a><a id="Tc_zvv9D4JlvE2owUhx9rYCeg_7_0"></a><a id="Tc_dTBB6bBJGkq-6Iq8EuTQ7w_8_0"></a><a id="Tc_gxGOT018JUOrOV-ZwV4dVA_8_2"></a><a id="Tc_rOithUOSskafOpMsc8T2Jg_8_5"></a><a id="Tc_L9Awf5FrJEOO3VL99_lymw_8_6"></a><a id="Tc_6zDIbYHX3E-ksX8S21pImQ_8_8"></a><a id="Tc_2BUogt4y8kmpO0lDjPrjCg_8_9"></a><a id="Tc_VdboV5KdsUSBiuCacmf4Hg_8_11"></a><a id="Tc_H7O1vPn1yEOpOf0lr6hjTg_9_0"></a><a id="Tc_R5r4IecFbkq8jmhaUdJiyw_10_0"></a><a id="Tc_QFQjaMVlaUWVqa7QNj2KUw_10_3"></a><a id="Tc_YmbPioPzBE6YiJMj7mLCMw_10_9"></a><a id="Tc_74j9if1zHEysyVYTaKq4BA_11_0"></a><a id="Tc_TwCStLi7S0GxQKfurMLZ5w_11_2"></a><a id="Tc_N39ZT8MrrU6_LALOnc0d6g_11_5"></a><a id="Tc_v4iwXGLNZ0mgUwQs08ZDRw_11_8"></a><a id="Tc_iLHHew67KUybcxYfQPzofA_11_9"></a><a id="Tc_99hXVjfuqkSzWIv34jegIw_11_11"></a><a id="Tc_C9RyqMZUC0exZ6xvBjn--Q_1_2"></a><a id="Tc_av2QEHg670--UREgQSD5Xw_2_0"></a><a id="Tc_XZRFSwObeUS5yB915al1UA_2_2"></a><a id="Tc_xxGWCCGetEm9toT6ILwPGw_3_0"></a><a id="Tc_VQCFw-O9G0u-jKLiWSEwDA_4_0"></a><a id="Tc_1gegXphh5E28oN8sTUu5SA_4_2"></a><a id="Tc_CV84UlVcak2LG5IP-Enc_A_5_0"></a><a id="Tc_M1mUFnsJikuS8yIlLVpzWg_6_0"></a><a id="Tc_0Xz7szeZ40OoAdqPSd1XIw_6_2"></a><ix:continuation id="Tb_2Qa90d_W8EayizmqDDswfw_cont1"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;">or liability for the collateral as the Company was not permitted to sell or re-pledge the collateral. The collateral had at least the prevailing credit rating of U.S. Government Treasuries and Agencies. The Company utilized a third-party custodian to manage the exchange of funds and ensure that collateral received is maintained at <ix:nonFraction unitRef="Unit_Standard_pure_41quVlPrd0qmkw4cS8TMkQ" contextRef="Duration_1_1_2021_To_6_30_2021_srt_RangeAxis_srt_MinimumMember_us-gaap_CollateralAxis_us-gaap_CollateralPledgedMember_us-gaap_FinancialInstrumentAxis_catb_ReverseRepurchaseAgreementsMember_LcFMj3T8lkOkdnhiKq_VZw" decimals="2" format="ixt:numdotdecimal" name="catb:PercentageOfInvestmentAmountToCollateralizedDepositsValue" scale="-2" id="Narr_hLPx3j_DVUq1WMreJl8FJg">102</ix:nonFraction>% of the value of the reverse repurchase agreements on a daily basis.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">The Company accounted for warrants to purchase its stock pursuant to Accounting Standards Codification (&#8220;ASC&#8221;) Topic 470, <i style="font-style:italic;">Debt</i>, and ASC Topic 480, <i style="font-style:italic;">Distinguishing Liabilities from Equity</i>, and classifies warrants for common stock and preferred stock as liabilities or equity. The warrants classified as liabilities are reported at their estimated fair value and any changes in fair value are reflected in research and development expense. The warrants classified as equity are reported at their estimated fair value with no subsequent remeasurement.</p><ix:nonNumeric contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" name="us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" id="Tb_fYn1hycRjEiQ_jaYCVPCUQ" escape="true"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">Below is a summary of assets and liabilities measured at fair value on a recurring basis (in thousands):</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td colspan="11" style="vertical-align:bottom;white-space:nowrap;width:49.79%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">As of June&#160;30,&#160;2021</b></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Quoted Prices</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Significant</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Significant</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">in Active</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Observable</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Unobservable</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Markets</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Inputs</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Inputs</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">(Level 1)</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">(Level 2)</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">(Level 3)</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.65%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Total</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Assets:</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Cash and cash equivalents:</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;">Money market funds</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_us-gaap_FairValueByFairValueHierarchyLevelAxis_us-gaap_FairValueInputsLevel1Member_us-gaap_FairValueByMeasurementFrequencyAxis_us-gaap_FairValueMeasurementsRecurringMember_us-gaap_FinancialInstrumentAxis_us-gaap_MoneyMarketFundsMember_4EKxHTw8JEicAKKNsRPVNQ" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:CashAndCashEquivalentsFairValueDisclosure" scale="3" id="Tc_pp6GJHYFhUqx6tbZN8lvbA_8_3">1,841</ix:nonFraction></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:middle;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_us-gaap_FairValueByMeasurementFrequencyAxis_us-gaap_FairValueMeasurementsRecurringMember_us-gaap_FinancialInstrumentAxis_us-gaap_MoneyMarketFundsMember_YaPFbhNQkE2FrAvpYLycpw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:CashAndCashEquivalentsFairValueDisclosure" scale="3" id="Tc_UaxOmvs3lUKizBx_fw_09w_8_12">1,841</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;">Reverse repurchase agreements</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_us-gaap_FairValueByFairValueHierarchyLevelAxis_us-gaap_FairValueInputsLevel2Member_us-gaap_FairValueByMeasurementFrequencyAxis_us-gaap_FairValueMeasurementsRecurringMember_us-gaap_FinancialInstrumentAxis_catb_ReverseRepurchaseAgreementsMember_UGB_7_lHRUS4CMvorjWa4Q" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:CashAndCashEquivalentsFairValueDisclosure" scale="3" id="Tc_k7RzMn8YJkCqWHpIv2365g_9_6">39,000</ix:nonFraction></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:middle;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.17%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_us-gaap_FairValueByMeasurementFrequencyAxis_us-gaap_FairValueMeasurementsRecurringMember_us-gaap_FinancialInstrumentAxis_catb_ReverseRepurchaseAgreementsMember_8aguBLxOS0aRUZALgT7jtA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:CashAndCashEquivalentsFairValueDisclosure" scale="3" id="Tc_edglGrfZ1UaPOahIZ9xLhQ_9_12">39,000</ix:nonFraction></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Total assets</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_us-gaap_FairValueByFairValueHierarchyLevelAxis_us-gaap_FairValueInputsLevel1Member_us-gaap_FairValueByMeasurementFrequencyAxis_us-gaap_FairValueMeasurementsRecurringMember_zuxaYQ-dMU6tjn8hB4nXZA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:AssetsFairValueDisclosure" scale="3" id="Tc_nljg-R3qakmbV7gn6fUo0A_10_3">1,841</ix:nonFraction></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_us-gaap_FairValueByFairValueHierarchyLevelAxis_us-gaap_FairValueInputsLevel2Member_us-gaap_FairValueByMeasurementFrequencyAxis_us-gaap_FairValueMeasurementsRecurringMember_ox3pO2cx3k6jQrCUAC-bNg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:AssetsFairValueDisclosure" scale="3" id="Tc_WpI-KN0dQ02PZ4WedCmibw_10_6">39,000</ix:nonFraction></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_us-gaap_FairValueByMeasurementFrequencyAxis_us-gaap_FairValueMeasurementsRecurringMember_7ux1XxVQiEqvGb08llDzxA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:AssetsFairValueDisclosure" scale="3" id="Tc_dqPlXktYgk2FlpC4b8egBw_10_12">40,841</ix:nonFraction></p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td colspan="11" style="vertical-align:bottom;white-space:nowrap;width:49.79%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">As of December&#160;31,&#160;2020</b></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Quoted Prices</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Significant</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Significant</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;width:10.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">in Active</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Observable</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Unobservable</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Markets</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Inputs</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Inputs</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">(Level 1)</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">(Level&#160;2)</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">(Level&#160;3)</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.65%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Total</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Assets:</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;">Cash&#160;and&#160;cash&#160;equivalents:</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 24pt;">Money&#160;market&#160;funds</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_us-gaap_FairValueByFairValueHierarchyLevelAxis_us-gaap_FairValueInputsLevel1Member_us-gaap_FairValueByMeasurementFrequencyAxis_us-gaap_FairValueMeasurementsRecurringMember_us-gaap_FinancialInstrumentAxis_us-gaap_MoneyMarketFundsMember_ImNI51vwxUa1mMOGzQz53w" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:CashAndCashEquivalentsFairValueDisclosure" scale="3" id="Tc_O6iq7lsnZE67C8eUaFxtew_8_3">22,999</ix:nonFraction></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_us-gaap_FairValueByMeasurementFrequencyAxis_us-gaap_FairValueMeasurementsRecurringMember_us-gaap_FinancialInstrumentAxis_us-gaap_MoneyMarketFundsMember_5JasQt6hYEq_e_eQXU5_Zg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:CashAndCashEquivalentsFairValueDisclosure" scale="3" id="Tc_MlTZKAugGEeu5HzNk7stEA_8_12">22,999</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;">Short-term&#160;investments:</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 24pt;">Reverse&#160;repurchase&#160;agreements</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_us-gaap_FairValueByFairValueHierarchyLevelAxis_us-gaap_FairValueInputsLevel2Member_us-gaap_FairValueByMeasurementFrequencyAxis_us-gaap_FairValueMeasurementsRecurringMember_us-gaap_FinancialInstrumentAxis_catb_ReverseRepurchaseAgreementsMember_o36sM144qEeODw8HsA6X6g" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:InvestmentsFairValueDisclosure" scale="3" id="Tc_ahAf42Qto0Gp29mJ6nC3eA_10_6">20,000</ix:nonFraction></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_us-gaap_FairValueByMeasurementFrequencyAxis_us-gaap_FairValueMeasurementsRecurringMember_us-gaap_FinancialInstrumentAxis_catb_ReverseRepurchaseAgreementsMember_nTkHcYm16UuYIybD6QT-qA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:InvestmentsFairValueDisclosure" scale="3" id="Tc_OW7qpLwUeUKOlE1zZXJlCg_10_12">20,000</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Total&#160;assets</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_us-gaap_FairValueByFairValueHierarchyLevelAxis_us-gaap_FairValueInputsLevel1Member_us-gaap_FairValueByMeasurementFrequencyAxis_us-gaap_FairValueMeasurementsRecurringMember_vJJOiK0omEimPN5x7ipU6w" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:AssetsFairValueDisclosure" scale="3" id="Tc_KOMbY-jlc0eRNO4N6Q34dA_11_3">22,999</ix:nonFraction></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_us-gaap_FairValueByFairValueHierarchyLevelAxis_us-gaap_FairValueInputsLevel2Member_us-gaap_FairValueByMeasurementFrequencyAxis_us-gaap_FairValueMeasurementsRecurringMember_7FCjcyMGm02k2jjSyQTOrg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:AssetsFairValueDisclosure" scale="3" id="Tc_z4vCTkRMUUqPTmR0OjekDw_11_6">20,000</ix:nonFraction></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.17%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_us-gaap_FairValueByMeasurementFrequencyAxis_us-gaap_FairValueMeasurementsRecurringMember_w9mL2kTQakOgYB3UIM5ljw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:AssetsFairValueDisclosure" scale="3" id="Tc_9mgSinar_06EaDPigYUXbA_11_12">42,999</ix:nonFraction></p></td></tr></table></ix:nonNumeric><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">At June 30, 2021 and December 31, 2020, cash equivalents approximated their fair value due to their short-term nature.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The warrant liability was valued based on significant inputs not observable in the market, which represents a Level 3 measurement within the fair value hierarchy. <ix:nonNumeric contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" name="us-gaap:FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" id="Group_dwlqIqCp9EmLzGcP2oyIJQ" continuedAt="Group_dwlqIqCp9EmLzGcP2oyIJQ_2" escape="true">The Company estimated the fair value of the warrant liability using Black-Scholes option-pricing models and assumptions that are based on the individual characteristics of the warrants on the valuation date, as well as assumptions including the fair value per share of the underlying security, the remaining contractual term of the warrant, risk-free interest rate, expected dividend yield and expected volatility of the price of the underlying security (in thousands).</ix:nonNumeric></p><ix:continuation id="Group_dwlqIqCp9EmLzGcP2oyIJQ_2"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.7%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.32%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">June 30, 2021</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Balance at beginning of year</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="-3" format="ixt:zerodash" name="us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" scale="3" id="Tc_AIfmgWrqskua84qy5hsG7g_2_3">&#8212;</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Issuance of warrants</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues" scale="3" id="Tc_l74bU0yEikiysHKc04YlZw_3_3">4,332</ix:nonFraction></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">(Decrease) increase in the fair value of the warrants</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings" sign="-" scale="3" id="Tc_CUgH9ljAUEOsbd0anymg0A_4_3">864</ix:nonFraction>)</p></td></tr><tr><td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Reclassification of warrant liability to additional paid-in capital</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.62%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" decimals="-3" format="ixt:numdotdecimal" name="catb:ReclassificationOfEquityClassifiedWarrants" scale="3" id="Tc_DUBQmhr760iSHheN9BmfIQ_5_3">3,468</ix:nonFraction>)</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Ending balance</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.7%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.62%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:zerodash" name="us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" scale="3" id="Tc_SRNzRX2ebU23D0a-I78Tbg_6_3">&#8212;</ix:nonFraction></p></td></tr></table></ix:continuation><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></ix:continuation><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;">13</p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><a id="_6ff43655_1b75_4ee2_a5f1_e7863a5dc52c"></a><a id="Tc_OtBXBLj4KUGLXmPITj3edA_1_5"></a><a id="Tc_JqUfUqLw1EaZJvVeGpV2Yw_1_8"></a><a id="Tc_yjBTtmlzdU-s3jr8U_MGuw_2_2"></a><a id="Tc_5LnkH5R7e02Zj1gME8HKqw_2_5"></a><a id="Tc_a81ZmX3R0UCjgniPIEZWEw_2_8"></a><a id="Tc_YDj0qlUcsESDoFvBkeygdA_2_11"></a><a id="Tc_rCxv195bl02EnUYIfvC3lg_3_0"></a><a id="Tc_fE3l-EXZu0me8j0MdG9Ncg_4_0"></a><a id="Tc_0Ea9kB8awkOhupSl5bvaGA_4_2"></a><a id="Tc_6SAcoX9pUUyvgOuHr59-Fg_4_5"></a><a id="Tc_pjbEfeUUg0aU8hd8DkTXag_4_6"></a><a id="Tc_wuY6rFS2z0ejD8nefVrU7g_4_8"></a><a id="Tc_kqHrLyHQ_UK00HgX8sPjqg_4_9"></a><a id="Tc_hA41UPPUK0i7KkYp0CW2vQ_4_11"></a><a id="Tc_JJSRRprVbEScs1-nbTf6LQ_5_0"></a><a id="Tc_C8v7E8a5RkiHfRiLX3VV_w_5_2"></a><a id="Tc_bOoNv6mmaky8kFMTKPbMxA_5_5"></a><a id="Tc_ULnZJtgQak2zi6-4Zhdh1A_5_6"></a><a id="Tc_49IEy3OaXEyzJWGR0aOAYg_5_8"></a><a id="Tc_afTbpWApp0mCj0rpKlwLVQ_5_9"></a><a id="Tc_hevbPH8a70q_MLhfzI7cew_5_11"></a><ix:nonNumeric contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" name="catb:ShortTermInvestmentsTextBlock" id="Tb_lM95Rl86yk-ZypJIGT6IPg" escape="true"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">5.&#160;&#160;&#160;&#160;Short-Term Investments</b></p><ix:nonNumeric contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" name="us-gaap:MarketableSecuritiesTextBlock" id="Tb_1WF9VOFDvkG1KfpaX-qjug" escape="true"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The Company did not hold any short-term investments at June 30, 2021. The following table summarizes the short-term investments held at December 31, 2020 (in thousands):</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.24%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.2%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Gross&#160;Unrealized</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Gross&#160;Unrealized</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.2%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.62%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Amortized&#160;Cost</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Gains</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Losses</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.58%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Fair&#160;Value</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><b style="font-weight:bold;">December 31, 2020</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.2%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Reverse&#160;repurchase&#160;agreements</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.24%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_us-gaap_FinancialInstrumentAxis_catb_ReverseRepurchaseAgreementsMember_zd8IXrWmeEmkb5K8gNA-7A" decimals="-3" format="ixt:numdotdecimal" name="catb:ShortTermInvestmentsAtAmortizedCost" scale="3" id="Tc_3Gam8dsXpEewmmw2KCMOag_4_3">20,000</ix:nonFraction></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.2%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_us-gaap_FinancialInstrumentAxis_catb_ReverseRepurchaseAgreementsMember_zd8IXrWmeEmkb5K8gNA-7A" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:ShortTermInvestments" scale="3" id="Tc_Nv2avJKP4E6lODKv9EYLbw_4_12">20,000</ix:nonFraction></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;">Total</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.24%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="-3" format="ixt:numdotdecimal" name="catb:ShortTermInvestmentsAtAmortizedCost" scale="3" id="Tc_3NZgxkzizkKYngK5gHh28w_5_3">20,000</ix:nonFraction></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.2%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:ShortTermInvestments" scale="3" id="Tc_QrEsCtr8Y0OEzxJ2JtaGlA_5_12">20,000</ix:nonFraction></p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></ix:nonNumeric><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">The contractual maturities of all short-term investments held at December 31, 2020 were one year or less. There were <ix:nonFraction unitRef="Unit_Standard_instrument_nbV1M-fcTE6q0gKtjhxD1w" contextRef="Duration_1_1_2020_To_12_31_2020_rdTyrb7aMEySeQyAmHflgA" decimals="INF" format="ixt-sec:numwordsen" name="catb:ShortTermSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions" scale="0" id="Narr_DlEBMM_NL0Ge1vCqEyMCUQ">no</ix:nonFraction> short-term investments in an unrealized loss position at December 31, 2020. </p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">Gross realized gains and losses on the sales of short-term investments are included in other income, net. Unrealized holding gains or losses for the period that have been included in accumulated other comprehensive income, as well as gains and losses reclassified out of accumulated other comprehensive income into other income, net were not material to the Company&#8217;s condensed consolidated results of operations. The cost of investments sold or the amount reclassified out of the accumulated other comprehensive income into other income, net is based on the specific identification method for purposes of recording realized gains and losses. All proceeds in the three and six-month periods ended June 30, 2021 and 2020 related to maturities of underlying investments. 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id="Tc_-JaL6e27wk2UMyCO9yO27A_8_0"></a><a id="Tc_wNGwbBfHhk2cRnlBv372sw_8_2"></a><a id="Tc_hekoPmzmZ0upKhRI4IZE7A_8_5"></a><ix:nonNumeric contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" name="us-gaap:AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock" id="Tb_vboyPzSFNU-kOTTKeIJhug" escape="true"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">6.</b><b style="font-weight:bold;">&#160;&#160;&#160;&#160;Accrued Expenses</b></p><ix:nonNumeric contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" name="us-gaap:ScheduleOfAccruedLiabilitiesTableTextBlock" id="Tb_B9HAzZzHoEmW2sFXYlL-og" escape="true"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">Accrued expenses consisted of the following (in thousands):</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:79.99%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.02%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">June&#160;30,&#160;</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.02%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">December&#160;31,&#160;</b></p></td></tr><tr><td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.02%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2021</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.02%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2020</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Accrued&#160;compensation</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:EmployeeRelatedLiabilitiesCurrent" scale="3" id="Tc_0f7cWHPtRkWz5KljrODW3w_3_3">1,018</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:EmployeeRelatedLiabilitiesCurrent" scale="3" id="Tc_y8cCVG_qz0Cg_mIrsMI7Kg_3_6">1,719</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Accrued contracted research costs</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="catb:AccruedContractedResearchCostsCurrent" scale="3" id="Tc_kL3FtfMDN0Koq2Nrqajicw_4_3">790</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="-3" format="ixt:numdotdecimal" name="catb:AccruedContractedResearchCostsCurrent" scale="3" id="Tc_4-huclgrIk2aNSQ9ev_j4g_4_6">1,726</ix:nonFraction></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Accrued professional fees</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:AccruedProfessionalFeesCurrent" scale="3" id="Tc_gqQJb9em-0CvRaepajsrdg_5_3">663</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:AccruedProfessionalFeesCurrent" scale="3" id="Tc_uqjK7UU2d0ii9z-0DKK7Ww_5_6">356</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Accrued other</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:OtherAccruedLiabilitiesCurrent" scale="3" id="Tc_IVhGUFyQ8kGhNbr54in-rg_6_3">180</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Accrued severance</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="catb:AccruedSeveranceCurrent" scale="3" id="Tc_tHee6FkI5ESBjjQ7Ox4jdA_7_3">63</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="-3" format="ixt:numdotdecimal" name="catb:AccruedSeveranceCurrent" scale="3" id="Tc_ilwAPYEVhUmB6D7_qiGBIA_7_6">396</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Total</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.42%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.6%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:AccruedLiabilitiesCurrent" scale="3" id="Tc_4bnNX2HHVkCvkjSR9UgbSA_8_3">2,714</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.42%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.6%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:AccruedLiabilitiesCurrent" scale="3" id="Tc_6ZUWxqWZeEe5dANd-VH2Pw_8_6">4,197</ix:nonFraction></p></td></tr></table></ix:nonNumeric><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></ix:nonNumeric><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><ix:nonNumeric contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" name="us-gaap:PreferredStockTextBlock" id="Tb_i3CftoSHyUy0B2gcMTxCTA" continuedAt="Tb_i3CftoSHyUy0B2gcMTxCTA_cont1" escape="true"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">7.</b><b style="font-weight:bold;">&#160;&#160;&#160;&#160;Stockholders&#8217; Equity</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Preferred Stock</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">Under the Company&#8217;s amended and restated certificate of incorporation, the Company has <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:PreferredStockSharesAuthorized" scale="0" id="Narr_BxcBIPF05E2YJ3U2xF8MLA">5,000,000</ix:nonFraction> shares of preferred stock authorized for issuance, with a $<ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:PreferredStockParOrStatedValuePerShare" scale="0" id="Narr_adraa97pa0iMezTo7_rjaA">0.001</ix:nonFraction> par value per share. Preferred stock may be issued from time to time in one or more series, each series to have such terms as stated or expressed in the resolutions providing for the issue of such series adopted by the board of directors of the Company. Preferred stock which may be redeemed, purchased or acquired by the Company may be reissued except as otherwise </p></ix:nonNumeric></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;">14</p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><a id="_22a9443f_e7f2_4ed0_ad1d_312f6cd7f35f"></a><a id="Tc_AM9QnxJ_QECbno-5PEuBWw_1_0"></a><a id="Tc_bsonwFNNPEaYmpIa8riOPw_1_2"></a><a id="Tc_HisT_eLoqk2rbz65z7j75Q_1_4"></a><a id="Tc_doLgLzMe1UmqEOP5YvlHDg_1_6"></a><a id="Tc_bt-mtI7ImUeSP_8Pd1M1WQ_1_9"></a><a id="Tc_igJAmVG25EeBU5JzWpXJBg_2_0"></a><a id="Tc_ElwoEY54jka5l_Ls7q81Gw_2_2"></a><a id="Tc_EI109cByGk-Voo3HpkPOjQ_2_6"></a><a id="Tc_LKajSanZpE2N8gfOi9cWNA_2_9"></a><a id="Tc_K4hhisZb0k2EET45XdCBNA_3_0"></a><a id="Tc_Z6TrRQxj0EqX5jtJeBt5cQ_3_2"></a><a id="Tc_BphWMVxazk-ZLB79YpbWHg_3_6"></a><a id="Tc_uTLV_CWmv0OJ7LVhWTy1uA_3_9"></a><a id="Tc_xvgIvpARrUuZMZWDCUUmCg_4_0"></a><a id="Tc_5hU_H-SZv0-SShG7DY7flQ_4_2"></a><a id="Tc_4QxuziLQMEKATiY34zuxpw_4_6"></a><a id="Tc_dM80LKiMXUqjEtwpC1s5qQ_4_9"></a><a id="Tc_VrfVzpTXfk-oPOVEBi630g_5_0"></a><a id="Tc_2jE2fe5hqEebsOykD4bp1A_5_2"></a><a id="Tc_aflCsSPZF0qPW4ovyiTMfQ_5_6"></a><a id="Tc_ofEbB62HY0qd-n1eXErvlg_5_9"></a><a id="Tc_dVCODKIm2UyeIxCggNOGRA_6_0"></a><a id="Tc_CE-_lW4zkUavjVdt9crWbg_6_2"></a><a id="Tc_sijF8aq8-UKqMdW22ttw8Q_6_6"></a><a id="Tc_9EBcpG-zP0GZWO8j_TTpqg_6_9"></a><a id="Tc_IjUkvx7sJUW2KRbRnFeNaQ_7_0"></a><a id="Tc_55nX81G190apG91bAJVsyQ_8_0"></a><a id="Tc_UYn-zQHtBkGD9wHM0BzjLg_8_6"></a><a id="Tc_Xmme4E-YuUi-r7gPdDL6aQ_9_0"></a><ix:continuation id="Tb_i3CftoSHyUy0B2gcMTxCTA_cont1"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;">provided by law. As of June 30, 2021, the Company had <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_7RZZjXZTlEWngOvK16UXcg" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:PreferredStockSharesOutstanding" scale="0" id="Narr_6KlH1u3Pq0uFnuWdUbFuIg">32,545</ix:nonFraction> shares of Series X Preferred Stock outstanding. Refer to Note 1 &#8220;Organization and Operations<i style="font-style:italic;">&#8221;</i> regarding the Company&#8217;s issuance of Series X Preferred Stock in January 2021 and February 2021.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Outstanding Warrants</span></p><ix:nonNumeric contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" name="us-gaap:ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock" id="Tb_D5-sJ6ga20amFzh0uB_fCg" escape="true"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The following table presents information about warrants that are issued and outstanding at June 30, 2021: &#160;</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:32.95%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><b style="font-weight:bold;">Year Issued</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:15.4%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Equity Instrument</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:18.06%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Warrants&#160;Outstanding</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.43%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Exercise&#160;Price</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.72%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Date&#160;of&#160;Expiration</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">2014</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"> Common Stock </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" 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Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="As_Of_6_30_2021_us-gaap_ClassOfWarrantOrRightAxis_catb_WarrantsIssuedIn2014Member_us-gaap_StatementClassOfStockAxis_catb_CommonStockWarrantsMember_S7YPCUWi_0eEiTdlJI-rpg" decimals="2" format="ixt:numdotdecimal" name="us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" scale="0" id="Tc_-NHeg-Af2keimeQA6CkUMg_2_7">122.12</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 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style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2021_us-gaap_ClassOfWarrantOrRightAxis_catb_WarrantsIssuedIn2015Member_us-gaap_StatementClassOfStockAxis_catb_CommonStockWarrantsMember_LhjNPWXDMUufgZfFRppA0g" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:ClassOfWarrantOrRightOutstanding" scale="0" id="Tc_pKHkwwnnbUip0ja-Lw-JYQ_3_4">1,227</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="As_Of_6_30_2021_us-gaap_ClassOfWarrantOrRightAxis_catb_WarrantsIssuedIn2015Member_us-gaap_StatementClassOfStockAxis_catb_CommonStockWarrantsMember_LhjNPWXDMUufgZfFRppA0g" decimals="2" format="ixt:numdotdecimal" name="us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" scale="0" id="Tc_O4_U-gJ7BkCMuQXF2NzuwQ_3_7">122.12</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">3/30/2022</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">2018</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"> Common Stock </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2021_us-gaap_ClassOfWarrantOrRightAxis_catb_WarrantsIssuedIn2018Member_us-gaap_StatementClassOfStockAxis_catb_CommonStockWarrantsMember_0ipCNJDDWkOjoPDpm6UD3A" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:ClassOfWarrantOrRightOutstanding" scale="0" id="Tc_kFmy1nwms0amoXeKwSuTHA_4_4">4,199,995</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="As_Of_6_30_2021_us-gaap_ClassOfWarrantOrRightAxis_catb_WarrantsIssuedIn2018Member_us-gaap_StatementClassOfStockAxis_catb_CommonStockWarrantsMember_0ipCNJDDWkOjoPDpm6UD3A" decimals="2" format="ixt:numdotdecimal" name="us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" scale="0" id="Tc_Xz3byIgSJE2-lW2JuZw1Tw_4_7">12.00</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">6/21/2023</p></td></tr><tr><td style="vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">2019</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"> Common Stock </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2021_us-gaap_ClassOfWarrantOrRightAxis_catb_WarrantsIssuedIn2019Member_us-gaap_StatementClassOfStockAxis_catb_CommonStockWarrantsMember_Gfeq8lOmCkSlg5YUl8X0HQ" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:ClassOfWarrantOrRightOutstanding" scale="0" id="Tc_fSKnsKGbq0yH9MAreZcQfg_5_4">1,991,300</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="As_Of_6_30_2021_us-gaap_ClassOfWarrantOrRightAxis_catb_WarrantsIssuedIn2019Member_us-gaap_StatementClassOfStockAxis_catb_CommonStockWarrantsMember_Gfeq8lOmCkSlg5YUl8X0HQ" decimals="2" format="ixt:numdotdecimal" name="us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" scale="0" id="Tc_blu9_T2PIkeTjD7iHLxbPw_5_7">6.25</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">2/7/2024</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">2021</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"> Common Stock </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.06%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2021_us-gaap_ClassOfWarrantOrRightAxis_catb_WarrantsIssuedIn2021Member_us-gaap_StatementClassOfStockAxis_catb_CommonStockWarrantsMember_qjoHfsnxBUyb0DDpXIPcaA" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:ClassOfWarrantOrRightOutstanding" scale="0" id="Tc_7y3V8GhaYkWxLFRs1kpPnw_6_4">2,990,136</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="As_Of_6_30_2021_us-gaap_ClassOfWarrantOrRightAxis_catb_WarrantsIssuedIn2021Member_us-gaap_StatementClassOfStockAxis_catb_CommonStockWarrantsMember_qjoHfsnxBUyb0DDpXIPcaA" decimals="2" format="ixt:numdotdecimal" name="us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" scale="0" id="Tc_jjd4bQWIvES3SMLt-xlMzA_6_7">0.35</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">12/14/2030</p></td></tr><tr><td style="vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Total</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:18.06%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_CommonStockWarrantsMember_Vd_smKkIKkiPNpVhyqKV7w" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:ClassOfWarrantOrRightOutstanding" scale="0" id="Tc_gHdO5yAIqke2YyYIS-Udng_7_4">9,183,885</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;&#160;</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Weighted average exercise price</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="As_Of_6_30_2021_srt_RangeAxis_srt_WeightedAverageMember_us-gaap_StatementClassOfStockAxis_catb_CommonStockWarrantsMember_23YZ2if-_E2InQ4HiLbrWQ" decimals="2" format="ixt:numdotdecimal" name="us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" scale="0" id="Tc_dSqGHaKNXEqxLUptOZG5dw_8_7">6.99</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td 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style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:11.12%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:11.26%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:9pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:9pt;line-height:1.19;margin:0pt;">&#160;</p></td><td 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style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:9pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:9pt;line-height:1.19;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';">&#160;&#160;&#160;&#160;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.12%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2021</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';">&#160;&#160;&#160;&#160;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.26%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2020</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Warrants&#160;for&#160;the&#160;purchase&#160;of&#160;common&#160;stock</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_CommonStockWarrantsMember_Vd_smKkIKkiPNpVhyqKV7w" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:CommonStockCapitalSharesReservedForFutureIssuance" scale="0" id="Tc_6dgrMAGCRkqqHjSY6WOVmg_3_2">9,183,885</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_12_31_2020_us-gaap_StatementClassOfStockAxis_catb_CommonStockWarrantsMember_RtyzL_gZFU6kDNdxxtF_-A" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:CommonStockCapitalSharesReservedForFutureIssuance" scale="0" id="Tc_qG-XDnWj50urH_jCfBIclw_3_4">6,193,749</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Options&#160;outstanding&#160;to&#160;purchase&#160;common&#160;stock</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_CommonStockOptionsOutstandingMember_zCOGYhW1gEWkJ5ScZEDcUw" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:CommonStockCapitalSharesReservedForFutureIssuance" scale="0" id="Tc_FgTSJDcrzUq3zdp4jHIdzw_4_2">7,930,334</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_12_31_2020_us-gaap_StatementClassOfStockAxis_catb_CommonStockOptionsOutstandingMember_c0h7RYpBYUapG-o77Yj9GQ" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:CommonStockCapitalSharesReservedForFutureIssuance" scale="0" id="Tc_Gj04ZK4IakOAf0lqAnf9dA_4_4">1,367,667</ix:nonFraction></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Options&#160;available&#160;for&#160;future&#160;issuance&#160;to&#160;purchase&#160;common&#160;stock</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_CommonStockOptionsReservedMember_ybEfpODtE0qaakkqtN3IiA" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:CommonStockCapitalSharesReservedForFutureIssuance" scale="0" id="Tc_S_g8x134RkmNow60-YseRA_5_2">1,697,308</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_12_31_2020_us-gaap_StatementClassOfStockAxis_catb_CommonStockOptionsReservedMember_kV7kaWyCiUWhFMdyGhDsoA" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:CommonStockCapitalSharesReservedForFutureIssuance" scale="0" id="Tc_e7f9mQlrsUqPJ9j7uqx-PA_5_4">1,936,173</ix:nonFraction></p></td></tr><tr><td style="vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Shares&#160;reserved&#160;for&#160;the&#160;employee&#160;stock&#160;purchase&#160;plan</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.12%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_EmployeeStockPurchasePlan2015Member_ZKwGauPKeU-9RJX1PlcX7Q" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:CommonStockCapitalSharesReservedForFutureIssuance" scale="0" id="Tc_IO1HP7FIlUqtDKI-w9mRFA_6_2">185,421</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.26%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_12_31_2020_us-gaap_StatementClassOfStockAxis_catb_EmployeeStockPurchasePlan2015Member_V0ke4EtXxUyZW6AFePX8AQ" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:CommonStockCapitalSharesReservedForFutureIssuance" scale="0" id="Tc_rMfxnOQGPU-L8tZ10CYNXQ_6_4">148,951</ix:nonFraction></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Total</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.12%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2021_DJgTd7SKXUejwh6HcesEGw" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:CommonStockCapitalSharesReservedForFutureIssuance" scale="0" id="Tc_heb2qQ_eH06CHcAwhiDHjQ_7_2">18,996,948</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.26%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_12_31_2020_p9C4uypnjk6vmJjywwA1rA" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:CommonStockCapitalSharesReservedForFutureIssuance" scale="0" id="Tc_M6_L9v0VK0KANOGq76VbLw_7_4">9,646,540</ix:nonFraction></p></td></tr></table></ix:nonNumeric><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">As of June 30, 2021, the Company also had <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_7RZZjXZTlEWngOvK16UXcg" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:PreferredStockSharesOutstanding" scale="0" id="Narr_sORbPskA2U2LHApTYXbFwQ">32,545</ix:nonFraction> shares of Series X Preferred Stock outstanding. Each share of Series X Preferred Stock outstanding is convertible into <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_StatementClassOfStockAxis_catb_SeriesXRedeemableConvertiblePreferredStockMember_hnAIlARiS0SvE8CT-59I0g" decimals="INF" format="ixt:numdotdecimal" name="catb:TemporaryEquityConversionBasis" scale="0" id="Narr__3oxKS-rHEKXP8BIVlu39Q">1,000</ix:nonFraction> shares of the Company&#8217;s common stock, subject to certain beneficial ownership limitations at the holder&#8217;s option. See Note 1 &#8220;Organization and Operations<i style="font-style:italic;">&#8221;</i> for additional detail.</p></ix:nonNumeric><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><a id="Tc_3S2ViieK7U2zsgoomXBp0Q_1_7"></a><a id="Tc_106KUhg8y021qUX6UN90Ug_2_7"></a><a id="Tc_JmDSrwEgm0y0aA5i9NqVMA_3_4"></a><a id="Tc__H0cLUnqbkKpcrlNNObpEA_3_7"></a><a id="Tc_JXj9W9nZq0-J2uFvzEJIwQ_3_9"></a><a id="Tc_HoqxTu3W4Uq9v5Pi5LXeRg_4_4"></a><a id="Tc_j9kZ32rbSU-O7gtWKN3SZA_4_7"></a><a id="Tc_2Vty6cD0e0OIipLHPqmQ-w_4_9"></a><a id="Tc_2LMWC5rD1kSyKYAZ9mJtmA_5_2"></a><a id="Tc_oqsdwiHd5Eywb00jzCrSKg_5_4"></a><a id="Tc_q4muPzqmN0aoUkNu37KJVQ_5_7"></a><a id="Tc_o6A8kUnIG0Wj2Ijq5XBn6g_5_9"></a><a id="Tc_9jkKKLANy0iy20LFLZrQag_6_0"></a><a id="Tc_t9geQDsVq0ybCpP0IbXLrA_6_4"></a><a id="Tc__8h4wxUIZUOl4w5gtkEukA_6_9"></a><a id="Tc_3-lutYXmIUyMNzwSnIc2UQ_6_10"></a><a id="Tc_fi3rGN5e1EWLyT_kDnqnWw_7_0"></a><a id="Tc_Z5ae4z2ZQES1GlNTQceEkA_7_4"></a><a id="Tc_DAkqLvlW4USaJU_A1UXlTg_8_0"></a><a id="Tc_McO7CBzlSUajZUF825s3xQ_8_4"></a><a id="Tc_aNbIK12nNEuQXF0pTBnwAA_9_0"></a><a id="Tc_XtpnNYelpkqqKJf3L961OA_9_4"></a><a id="Tc_E-7tauqVHUKfS9rjYh4q8Q_10_0"></a><a id="Tc_CTwknxUD-0Kjs_jXYE-tCw_10_4"></a><a id="Tc_QjgIzRQfRUq6ct4bAc6Q1g_11_0"></a><a id="Tc_Z1QjxmxWYEW1XbMJRjG_iA_11_4"></a><a id="Tc_fYrR3QkKVEuLJBIWBu5hiA_11_9"></a><a id="Tc_ckPzOv4npUKu91JiUbY6ew_12_0"></a><a id="Tc_8hAJKbO3F0euuIOHiamWLQ_12_4"></a><a id="Tc_EbIJUN7xxkmVkfglC2NvLQ_12_9"></a><ix:nonNumeric contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" name="us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" id="Tb__gITmCfs2EOsFR3o3u_g-A" continuedAt="Tb__gITmCfs2EOsFR3o3u_g-A_cont1" escape="true"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">9.&#160;&#160;&#160;&#160;</b><b style="font-weight:bold;">Stock Incentive Plans</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">A summary of the Company&#8217;s stock option activity and related information follows:</p><ix:nonNumeric contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" name="us-gaap:ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" id="Tb_7joV7Oa3Pky9IZInsm1sSg" escape="true"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Weighted</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Average</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Weighted-</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Remaining</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Aggregate</b></p></td></tr><tr><td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Average Exercise</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Contractual</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Intrinsic Value</b></p></td></tr><tr><td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><b style="font-family:'Calibri','Helvetica','sans-serif';font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.52%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Shares</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><b style="font-family:'Calibri','Helvetica','sans-serif';font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;Price</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><b style="font-family:'Calibri','Helvetica','sans-serif';font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;"> Term (years)</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><b style="font-family:'Calibri','Helvetica','sans-serif';font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">(in&#160;thousands)</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Outstanding&#160;at&#160;December&#160;31,&#160;2020</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_12_31_2020_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_TJW_DtDBt0qOgn09dsa8EA" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" scale="0" id="Tc_IFiJ167R0Uq-8Tc8-MBHrA_6_2">1,367,667</ix:nonFraction></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="As_Of_12_31_2020_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_TJW_DtDBt0qOgn09dsa8EA" decimals="2" format="ixt:numdotdecimal" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" scale="0" id="Tc_Fu5HOOAy3Uqbn1eNagsaFA_6_5">11.38</ix:nonFraction></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonNumeric contextRef="Duration_1_1_2020_To_12_31_2020_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_HD-fJVoHQECkoaRvviZuXQ" format="ixt-sec:duryear" name="us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2" id="Tc_csGmk5D-x0KE6SODc3Gvig_6_7">8.13</ix:nonNumeric></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td></tr><tr><td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Granted</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_-eWF2iqJxUmerDKIJI1vKA" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" scale="0" id="Tc_ple1LJrL8UOQ3IQgiO98xg_7_2">6,447,000</ix:nonFraction></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_-eWF2iqJxUmerDKIJI1vKA" decimals="2" format="ixt:numdotdecimal" name="us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" scale="0" id="Tc_oLsRhJzkz0uay8DstrRVnQ_7_5">2.74</ix:nonFraction></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Assumed in Quellis Acquisition</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_-eWF2iqJxUmerDKIJI1vKA" decimals="INF" format="ixt:numdotdecimal" name="catb:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionGross" scale="0" id="Tc_anGQZCegy0iYgC4gL-Wd7g_8_2">332,494</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_-eWF2iqJxUmerDKIJI1vKA" decimals="2" format="ixt:numdotdecimal" name="catb:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionWeightedAverageExercisePrice" scale="0" id="Tc_OEnu5v7k-UGmUDLLPZ6edg_8_5">0.29</ix:nonFraction></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Cancelled&#160;or&#160;forfeited</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(<ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_-eWF2iqJxUmerDKIJI1vKA" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" scale="0" id="Tc_flowsUOleUmcuoiS35TTmA_9_2">208,152</ix:nonFraction>)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_-eWF2iqJxUmerDKIJI1vKA" decimals="2" format="ixt:numdotdecimal" name="us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice" scale="0" id="Tc_9am7gkB1NE6v5EJFAe_FZg_9_5">8.71</ix:nonFraction></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"> <span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"> <span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Expired</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.52%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(<ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_-eWF2iqJxUmerDKIJI1vKA" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod" scale="0" id="Tc_G_L1pdWHNEuMKUGaUa4xKQ_10_2">8,675</ix:nonFraction>)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_-eWF2iqJxUmerDKIJI1vKA" decimals="2" format="ixt:numdotdecimal" name="us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice" scale="0" id="Tc_K9SG_KnyMkOKYpQ0CnfdkQ_10_5">16.70</ix:nonFraction></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Outstanding&#160;at&#160;June 30, 2021</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.52%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2021_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_ej7jrX1G_0CSz_cKjUU-vA" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" scale="0" id="Tc_bKV_b4grq02FeR0pm4ieiw_11_2">7,930,334</ix:nonFraction> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="As_Of_6_30_2021_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_ej7jrX1G_0CSz_cKjUU-vA" decimals="2" format="ixt:numdotdecimal" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" scale="0" id="Tc_GXXS4-BRi0iXlOhEZbe-5Q_11_5">3.96</ix:nonFraction></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonNumeric contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_-eWF2iqJxUmerDKIJI1vKA" format="ixt-sec:duryear" name="us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2" id="Tc_J7yj9m7z-UOjABF1ta28cA_11_7">9.44</ix:nonNumeric></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_ej7jrX1G_0CSz_cKjUU-vA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" scale="3" id="Tc_QxZbRHjZn0qh61_YL2dq6A_11_10">662</ix:nonFraction></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Vested&#160;and&#160;exercisable&#160;at&#160;June 30, 2021</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.52%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="As_Of_6_30_2021_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_ej7jrX1G_0CSz_cKjUU-vA" decimals="INF" format="ixt:numdotdecimal" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber" scale="0" id="Tc_-8Yqt30_cUGab0SMiUUI-g_12_2">770,141</ix:nonFraction> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="As_Of_6_30_2021_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_ej7jrX1G_0CSz_cKjUU-vA" decimals="2" format="ixt:numdotdecimal" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice" scale="0" id="Tc_d4_dwhvuW0q3Mur2bvKv_Q_12_5">14.07</ix:nonFraction></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><ix:nonNumeric contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_-eWF2iqJxUmerDKIJI1vKA" format="ixt-sec:duryear" name="us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1" id="Tc_PLnyS7h220yGkVb3_OVjJA_12_7">7.31</ix:nonNumeric></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> <ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_ej7jrX1G_0CSz_cKjUU-vA" decimals="-3" format="ixt:numdotdecimal" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue" scale="3" id="Tc_0hfJXkMR_U6X3WecF7zQSQ_12_10">207</ix:nonFraction></p></td></tr></table></ix:nonNumeric><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">There were <ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_1_1_2020_To_6_30_2020_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_0UwS2h-WOUqAiZc0mAfZNg" decimals="INF" format="ixt-sec:numwordsen" name="us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised" scale="0" id="Narr_yS9JlL3kZ06XevfviCUPTg"><ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_4_1_2020_To_6_30_2020_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_Fw3NloSYm0yc3jJ48rrBCA" decimals="INF" format="ixt-sec:numwordsen" name="us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised" scale="0" id="Narr_wra5D-b_gEmeHCy1g6DLBg"><ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_-eWF2iqJxUmerDKIJI1vKA" decimals="INF" format="ixt-sec:numwordsen" name="us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised" scale="0" id="Narr_vK9-hDydDk-VIcHLJPxufA"><ix:nonFraction unitRef="Unit_Standard_shares_ARDJafDZFk2rxPsy6ytARA" contextRef="Duration_4_1_2021_To_6_30_2021_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_I1ZGRaPL80eC7uL7UhjHgw" decimals="INF" format="ixt-sec:numwordsen" name="us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised" scale="0" id="Narr_9En4A1x4UEaO6PMVeV0aEg">no</ix:nonFraction></ix:nonFraction></ix:nonFraction></ix:nonFraction> options exercised in the three or six months ended June 30, 2021 and 2020. The total grant date fair value of options vested for the three months ended June 30, 2021 and 2020 was $<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2021_To_6_30_2021_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_I1ZGRaPL80eC7uL7UhjHgw" decimals="5" format="ixt:numdotdecimal" name="us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1" scale="6" id="Narr_XZcJyWcdHEy59emjQCs0bw">0.4</ix:nonFraction> million and $<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_4_1_2020_To_6_30_2020_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_Fw3NloSYm0yc3jJ48rrBCA" decimals="2" format="ixt:numdotdecimal" name="us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1" scale="0" id="Narr_FTJ6Jl-ID0qvNYjTFaIJPA">0.3</ix:nonFraction> million, respectively. The total grant date fair value of options vested for the six months ended June 30, 2021 and 2020 was $<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_-eWF2iqJxUmerDKIJI1vKA" decimals="-5" format="ixt:numdotdecimal" name="us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1" scale="6" id="Narr_1YbWnpnk9UCa200e1fsskw">1.0</ix:nonFraction> million and $<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="Duration_1_1_2020_To_6_30_2020_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_0UwS2h-WOUqAiZc0mAfZNg" decimals="-5" format="ixt:numdotdecimal" name="us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1" scale="6" id="Narr_WTK4cGl9K0aLdn8SxxFdig">0.8</ix:nonFraction> million, respectively. The weighted-average grant date fair value of options granted to employees and non-employees for the three months ended June 30, 2021 and 2020 </p></ix:nonNumeric></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;">15</p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><ix:continuation id="Tb__gITmCfs2EOsFR3o3u_g-A_cont1"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;">was $<ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="Duration_4_1_2021_To_6_30_2021_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_I1ZGRaPL80eC7uL7UhjHgw" decimals="2" format="ixt:numdotdecimal" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" scale="0" id="Narr_wCqNigxVy0Sn2WQ8A7Q08Q">1.73</ix:nonFraction> and $<ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="Duration_4_1_2020_To_6_30_2020_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_Fw3NloSYm0yc3jJ48rrBCA" decimals="2" format="ixt:numdotdecimal" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" scale="0" id="Narr_RN8b6JO87UiknJeHm5kiDg">4.00</ix:nonFraction>, respectively. The weighted-average grant date fair value of options granted to employees and non-employees for the six months ended June 30, 2021 and 2020 was $<ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_-eWF2iqJxUmerDKIJI1vKA" decimals="2" format="ixt:numdotdecimal" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" scale="0" id="Narr_5nnM0_pNc0Gh56hJJ-7XtA">1.73</ix:nonFraction> and $<ix:nonFraction unitRef="Unit_Divide_USD_shares_suE5CdTBuUS7OWuNWwf8wA" contextRef="Duration_1_1_2020_To_6_30_2020_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_0UwS2h-WOUqAiZc0mAfZNg" decimals="2" format="ixt:numdotdecimal" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" scale="0" id="Narr_sUdCoNqyrEObbPa3Jv0IDQ">3.64</ix:nonFraction>, respectively.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">At June 30, 2021, the total unrecognized compensation expense related to unvested stock option awards was $<ix:nonFraction unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ" contextRef="As_Of_6_30_2021_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_ej7jrX1G_0CSz_cKjUU-vA" decimals="-5" format="ixt:numdotdecimal" name="us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions" scale="6" id="Narr_QWyoFhgpLkGhAmdGuyfI7g">12.7</ix:nonFraction> million. The Company expects to recognize that cost over a weighted-average period of approximately <ix:nonNumeric contextRef="Duration_1_1_2021_To_6_30_2021_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_-eWF2iqJxUmerDKIJI1vKA" format="ixt-sec:duryear" name="us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" id="Narr_j4jABc0_REa7twD-hO9nnw">3.3</ix:nonNumeric> years. </p></ix:continuation><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><ix:nonNumeric contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg" name="us-gaap:SubsequentEventsTextBlock" id="Tb_3vMERlhYIkyEZZgPYpkTIQ" escape="true"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">10.&#160;&#160;&#160;</b><b style="font-weight:bold;">Subsequent Events</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><i style="font-style:italic;">Reverse Stock Split</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-indent:18pt;margin:0pt;">On August 4, 2021, the Company&#8217;s Board of Directors approved a reverse stock split of its outstanding shares of common stock at a ratio of one-for-<span style="-sec-ix-hidden:Hidden_eDKkDufasEG7Uy_Ec9Rr0A;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">six</span></span>. The reverse stock split will become effective on August 19, 2021 pursuant to a Certificate of Amendment to its Certificate of Incorporation to be filed with the Secretary of State of the State of Delaware. The reverse stock split was approved by the Company&#39;s stockholders at the Company&#39;s Annual Meeting of Stockholders on June 2, 2021. All share and per share amounts of the common stock included in the accompanying consolidated financial statements have been presented without giving effect to the reverse stock split.</p></ix:nonNumeric><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="display:none;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:0pt;text-align:justify;text-indent:18pt;margin:0pt;"><span style="font-size:0pt;line-height:1.19;visibility:hidden;">&#8203;</span></p></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;">16</p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><a id="_bf6d719e_832a_4b74_9d1a_e1f0d59c4f18"></a><a id="Item2ManagementsDiscussionandAnalysisofF"></a><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">Item 2. Management&#8217;s Discussion and Analysis of Financial Condition and Results of Operations</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"><i style="font-style:italic;">You should read the following discussion and analysis of our financial condition and results of operations together with our condensed consolidated financial statements and the related notes and other financial information included elsewhere in this Quarterly Report on Form 10-Q and the audited consolidated financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2020 (the &#8220;2020 Annual Report on Form 10-K&#8221;). Some of the information contained in this discussion and analysis or set forth elsewhere in this Quarterly Report on Form 10-Q, including information with respect to our plans and strategy for our business, includes forward-looking statements that involve risks and uncertainties. You should review the sections entitled &#8220;Risk Factors&#8221; and </i>&#8220;<i style="font-style:italic;">Summary of the Material Risks Associated with Our Business&#8221; in our 2020 Annual Report on Form 10-K for a discussion of important factors that could cause actual results to differ materially from the results described in or implied by the forward-looking statements contained in the following discussion and analysis.</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">Overview</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">We are a biopharmaceutical company focused on the discovery, development and commercialization of novel therapeutics. Our mission is to bring hope with life-changing therapies to patients and families. Our lead product candidate is QLS-215, a potential best-in-class monoclonal antibody inhibitor of plasma kallikrein in preclinical development for the treatment of hereditary angioedema, or HAE, a rare, debilitating and potentially life-threatening disease. QLS-215 has the potential to be the most patient-friendly chronic treatment option, based on the data generated to date and the existing HAE treatment landscape.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">In January&#160;2021, as further described below, we acquired Quellis Biosciences,&#160;Inc., or Quellis, including the QLS-215 program, and announced a private placement that, upon closing in February&#160;2021, resulted in gross proceeds to us of approximately&#160;$110.0 million&#160;before deducting placement agent and other offering expenses. In November&#160;2020, after we stopped the development of our edasalonexent program as a potential treatment for Duchenne Muscular Dystrophy, or DMD, we decided to explore and evaluate strategic options and engaged Ladenburg Thalmann&#160;&amp; Co.,&#160;Inc. as our strategic financial advisor. The acquisition of Quellis was the result of our evaluation of strategic options and we believe that the acquisition represents an opportunity to create substantial value for our stockholders.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">HAE is a rare, debilitating and potentially life-threatening disease. The treatment options for patients with HAE have improved, however there is remaining unmet medical need and the global market for HAE therapy is strong and growing. The vision for our lead program, QLS-215, is to develop a best-in-class monoclonal antibody inhibitor of plasma kallikrein for HAE prophylaxis that is able to treat HAE by achieving sustained blood levels of QLS-215 with dosing once every three months or longer. Plasma kallikrein, when uninhibited as occurs in HAE, produces bradykinin that causes pathologic vascular permeability, vasodilation and ultimately excessive tissue swelling. QLS-215 is a humanized monoclonal antibody that in preclinical studies potently inhibits the production of bradykinin by plasma kallikrein and has a long plasma half-life that may potentially enable patients to dose less frequently and potentially be more effective than existing HAE treatments. QLS-215 is currently in preclinical development and we expect to submit an Investigational New Drug application, or IND, for QLS-215 in mid-2022 and plan to initiate a Phase 1 clinical trial with initial results anticipated by the end of 2022. We believe that this clinical trial has the opportunity to establish proof of concept for the differentiated profile of QLS-215. Subsequently, assuming positive data from the Phase 1 clinical trial, we plan to initiate a Phase 1b/2 trial in patients with HAE in 2023 with initial results anticipated by the end of 2023.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Our vision for QLS-215 is supported by preclinical data of the in vitro potency and antibody half-life in non-human primates. Multiple experiments have confirmed that QLS-215 is approximately 10-fold more potent than lanadelumab, a monoclonal antibody inhibitor of plasma kallikrein commercialized under the name TAKHZYRO and an approved prophylactic treatment for HAE, in inhibiting bradykinin production. In cynomolgus monkey studies, lanadelumab was observed to have a half-life of approximately 10 days, which is consistent with what has been reported in U.S. Food and Drug Administration review documents and publications for lanadelumab in non-human primates. QLS-215 was administered at the same dose as lanadelumab and the observed half-life was approximately 34 days, which is about a three to four-fold longer half-life than observed for lanadelumab. We believe this could translate to a half-life of several months for QLS-215 in humans. If this longer half-life is demonstrated in clinical trials, it has the potential to enable dosing once every three months or longer. These preclinical data suggest that at equal doses QLS-215 would have a significantly longer duration of action than lanadelumab and could result in QLS-215 being an effective prophylactic therapy for patients with HAE due to inhibition of the pathologic activity of plasma kallikrein for an extended time period.</p></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;">17</p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">January&#160;2021 Quellis Acquisition and February&#160;2021 Financing</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">In January 2021, we acquired Quellis pursuant to an Agreement and Plan of Merger, or the Merger Agreement, by and among us, Cabo Merger Sub I, Inc., a Delaware corporation and our wholly owned subsidiary, or the First Merger Sub, Cabo Merger Sub II, LLC, a Delaware limited liability company and our wholly owned subsidiary, or the Second Merger Sub, and Quellis, or the Quellis Acquisition. Pursuant to the Merger Agreement, &#160;the First Merger Sub merged with and into Quellis, pursuant to which Quellis was the surviving entity and became a wholly owned subsidiary of Catabasis, or the First Merger. Immediately following the First Merger, Quellis merged with and into the Second Merger Sub, pursuant to which the Second Merger Sub was the surviving entity, or the Second Merger and, together with the First Merger, the Merger. &#160;Under the terms of the Merger Agreement, at the closing of the Merger, we issued to the Quellis stockholders 3,332,669 shares of our common stock, and 50,504 shares of newly designated Series X Preferred Stock (as described below). In addition, we assumed outstanding Quellis stock options, which became options for 332,494 shares of our common stock, and assumed a warrant exercisable for Quellis common stock, which became a warrant to purchase 2,805 shares of Series X Preferred Stock at an exercise price of $341.70 per share, and a warrant to purchase 185,136 shares of our common stock at an exercise price of $0.35 per share. Upon stockholder approval of the Conversion Proposal (as defined below) on June 2, 2021, the warrant to purchase Series X Preferred Stock was converted into the right to purchase 2,805,000 shares of our common stock, at a per share exercise price of $0.35 per share.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">In January 2021, we also entered into a Stock Purchase Agreement, or the Purchase Agreement, with certain institutional and accredited investors pursuant to which, we sold an aggregate of 35,573 shares of Series X Preferred Stock for an aggregate purchase price of $110.0 million, or the February 2021 Financing. Our stockholders approved the conversion of the Series X Preferred Stock into shares of common stock in accordance with Nasdaq Listing Rule 5635(a), or the Conversion Proposal, at our annual stockholders meeting on June 2, 2021. On the fourth business day after the approval, each share of Series X Preferred Stock automatically converted into 1,000 shares of common stock, subject to certain beneficial ownership limitations, including that a holder of Series X Preferred Stock is prohibited from converting shares of Series X Preferred Stock into shares of common stock if, as a result of such conversion, such holder, together with its affiliates, would beneficially own more than a specified percentage (to be initially set at 9.99% and thereafter adjustable by the holder to a number between 4.99% and 19.99%) of the total number of shares of common stock issued and outstanding immediately after giving effect to such conversion. Shares of Series X Preferred Stock not converted automatically are thereafter subject to conversion at the option of the holder, subject to certain beneficial ownership limitations. As of June 30, 2021, 53,532 shares of Series X Preferred Stock were converted into 53,531,797 shares of common stock and 32,545 shares of Series X Preferred Stock remained outstanding.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><i style="font-style:italic;">Reverse Stock Split</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">On August 4, 2021, our Board of Directors approved a reverse stock split of our outstanding shares of common stock at a ratio of one-for-six. The reverse stock split will become effective on August 19, 2021 pursuant to a Certificate of Amendment to our Certificate of Incorporation to be filed with the Secretary of State of the State of Delaware. The reverse stock split was approved by our stockholders at our Annual Meeting of Stockholders on June 2, 2021. All share and per share amounts of the common stock included in the accompanying consolidated financial statements have been presented without giving effect to the reverse stock split.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">Financial Overview</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Research and Development Expenses</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Research and development expenses consist primarily of costs incurred for our research activities, including our drug discovery efforts, and the development of our product candidates, which include:</p><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">employee-related expenses including salaries, benefits and stock-based compensation expense;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">expenses incurred under agreements with third parties, including contract research organizations that conduct clinical trials and research and development and preclinical activities on our behalf;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">the cost of consultants;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">the cost of lab supplies and acquiring, developing and manufacturing study materials; and</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">facilities and other expenses, which include direct and allocated expenses for rent and maintenance of facilities, insurance and other supplies.</span></td></tr></table><div style="margin-top:12pt;"></div></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;">18</p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Research and development costs are expensed as incurred. Nonrefundable advance payments for goods or services to be received in the future for use in research and development activities are deferred and capitalized. The capitalized amounts are expensed as the related goods are delivered or the services are performed.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">We typically use our employee, consultant and infrastructure resources across our development programs. We track outsourced development costs by product candidate or development program, but we do not allocate personnel costs, other internal costs or external consultant costs to specific product candidates or development programs. We record our research and development expenses net of any research and development tax incentives we are entitled to receive from government authorities.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The following table summarizes our research and development expenses by program (in thousands):</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:73.88%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.24%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:73.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="5" style="vertical-align:bottom;white-space:nowrap;width:23.76%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Six&#160;Months&#160;Ended June 30,</b></p></td></tr><tr><td style="vertical-align:bottom;width:73.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.72%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2021</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2020</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:73.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Edasalonexent</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 615</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 7,955</span></p></td></tr><tr><td style="vertical-align:bottom;width:73.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">QLS-215</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 2,861</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> &#8212;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:73.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Other research and platform programs</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 478</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> &#8212;</span></p></td></tr><tr><td style="vertical-align:bottom;width:73.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Costs not directly allocated to programs:</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:73.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Employee expenses including cash compensation, benefits and stock-based compensation</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 2,200</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 2,984</span></p></td></tr><tr><td style="vertical-align:bottom;width:73.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Facilities</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 156</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 326</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:73.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Consultants and professional expenses, including stock-based compensation</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="white-space:pre-wrap;"> (292)</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 551</span></p></td></tr><tr><td style="vertical-align:bottom;width:73.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Other</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.24%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 53</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 223</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:73.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;">Total costs not directly allocated to programs</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.24%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 2,117</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 4,084</span></p></td></tr><tr><td style="vertical-align:bottom;width:73.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Total research and development expenses</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.24%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 6,071</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 12,039</span></p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Based on the results of the Phase 3 PolarisDMD trial of edasalonexent for the treatment of DMD, which we announced in October&#160;2020, we stopped all activities related to the development of edasalonexent, including the ongoing GalaxyDMD open-label extension trial. We have also stopped all activities related to our CAT-5571 program.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">We expect to incur significant research and development expenses in the year ending December&#160;31, 2021 and in future periods in connection with the preclinical and clinical activities related to the development of QLS-215. Because of this, we expect that our research and development expenses over the next several quarters will be comparable to the prior year periods. Development of QLS-215 and any future product candidates is highly uncertain and we cannot reasonably estimate at this time the nature, timing and costs of the efforts that would be necessary to complete the development of any such product candidates. We are also unable to predict when, if ever, material net cash inflows would commence from any such product candidates. This is due to the fact that we would need to raise substantial additional capital to fund the clinical development of any such product candidates and the numerous risks and uncertainties associated with developing product candidates, including the uncertainties of:</p><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">establishing an appropriate safety profile with IND-enabling toxicology studies;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">successful enrollment in, and completion of clinical trials;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">receipt of marketing approvals from applicable regulatory authorities;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">establishing commercial manufacturing capabilities or making arrangements with third-party manufacturers;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">obtaining and maintaining patent and trade secret protection and regulatory exclusivity;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">launching commercial sales, if and when we are able to obtain marketing approval, whether alone or in collaboration with others; and</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">a continued acceptable safety profile following approval.</span></td></tr></table><div style="margin-top:12pt;"></div><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">A change in the outcome of any of these variables with respect to the development of QLS-215 or any future product candidate would significantly change the costs and timing associated with the development of that product candidate.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">General and Administrative Expenses</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">General and administrative expenses consist primarily of salaries and other related costs, including stock-based compensation, for personnel in executive, finance, accounting, commercial, business development, legal and human resources functions. Other significant costs include facility costs not otherwise included in research and development expenses, legal fees relating to patent and corporate matters, and fees for accounting and consulting services.</p></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;">19</p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">We anticipate that in the near term our general and administrative expenses will remain relatively consistent with their current levels, although as we continue to develop QLS-215 and potentially expand our pipeline to include other product candidates, our general and administrative expenses may increase.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Acquired In-process Research and Development Expense</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Acquired in-process research and development (&#8220;IPR&amp;D&#8221;) expense resulted from the Quellis Acquisition in January&#160;2021. The acquisition cost allocated to acquire IPR&amp;D with no alternative future use was recorded as expense at the acquisition date and no additional IPR&amp;D expense relating to the Quellis Acquisition is expected to be reported in future periods.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Reduction in Workforce</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">In December&#160;2020, following the decision to stop development of edasalonexent, we announced that we were reducing our workforce during the quarter ended December&#160;31, 2020. The reduction resulted in total expenses for employee severance and employee benefits of $0.6 million, of which $0.2 million was recorded during the six months ended June&#160;30, 2021. No additional severance expense related to the reduction in workforce is expected to be recorded in future periods. As of June&#160;30, 2021, $0.1 million remains to be paid out, all of which will be paid in 2021.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Other Income (Expense)</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Other income (expense), net consists of interest income earned on our cash, cash equivalents and short-term investments and net amortization expense on short-term investments, and gains and losses related to foreign currency fluctuations.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">Critical Accounting Policies and Significant Judgments and Estimates</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">This discussion and analysis of our financial condition and results of operations is based on our financial statements, which we have prepared in accordance with United States generally accepted accounting principles. We believe that several accounting policies are important to understanding our historical and future performance. We refer to these policies as critical because these specific areas generally require us to make judgments and estimates about matters that are uncertain at the time we make the estimate, and different estimates&#8212;which also would have been reasonable&#8212;could have been used. On an ongoing basis, we evaluate our estimates and judgments. We base our estimates on historical experience and other market-specific or other relevant assumptions that we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">During the six months ended June&#160;30, 2021, there were no material changes to our critical accounting policies as reported in our 2020 Annual Report on Form&#160;10-K, other than the addition of accounting for IPR&amp;D expense as described in Note 3,&#160;&#8220;Acquisition of Quellis&#8221;&#160;to condensed consolidated financial statements including in this Quarterly Report on Form&#160;10-Q.</p></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;">20</p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">Results of Operations</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;">We anticipate that our results of operations may fluctuate for the foreseeable future due to several factors, such as the progress of our research and development efforts and the timing and outcome of regulatory submissions<span style="font-family:'Calibri','Helvetica','sans-serif';">.</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Comparison of the Three Months Ended June&#160;30, 2021 and 2020</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The following table summarizes our results of operations for the three months ended June&#160;30, 2021 and 2020, together with the dollar change in those items (in thousands):</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:60.59%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.31%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.3%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.62%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.16%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:60.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="5" style="vertical-align:bottom;white-space:nowrap;width:23.92%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Three&#160;Months&#160;Ended June 30,</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.78%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Period-to-</b></p></td></tr><tr><td style="vertical-align:bottom;width:60.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.79%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2021</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.77%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2020</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.78%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Period&#160;Change</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:60.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Operating expenses:</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.3%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.62%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;&#160;</p></td></tr><tr><td style="vertical-align:bottom;width:60.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Research and development</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 3,478</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.3%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 6,750</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.62%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="white-space:pre-wrap;"> (3,272)</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:60.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">General and administrative</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.31%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 4,008</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.3%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 2,803</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.62%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.16%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 1,205</span></p></td></tr><tr><td style="vertical-align:bottom;width:60.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;">Total operating expenses</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 7,486</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.3%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 9,553</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.62%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="white-space:pre-wrap;"> (2,067)</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:60.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Loss from operations</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="white-space:pre-wrap;"> (7,486)</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.3%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="white-space:pre-wrap;"> (9,553)</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.62%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 2,067</span></p></td></tr><tr><td style="vertical-align:bottom;width:60.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Other income, net</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.31%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 20</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.46%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.3%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 45</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.62%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.16%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="white-space:pre-wrap;"> (25)</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:60.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Net loss</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.31%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="white-space:pre-wrap;"> (7,466)</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.46%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.3%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="white-space:pre-wrap;"> (9,508)</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.62%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.16%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 2,042</span></p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><i style="font-style:italic;">Research and Development Expenses</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Research and development expenses decreased by $3.3 million to $3.5 million for the three months ended June 30, 2021 from $6.8 million for the three months ended June 30, 2020, a decrease of 48%. The decrease in research and development expenses was primarily attributable to a $4.6 million decrease in costs to support our edasalonexent program due to stopping activities associated with conducting ongoing clinical trials, a $0.9 million decrease in professional expenses, a $0.5 million decrease in employee related expenses, and a $0.1 million decrease to the research and development portion of facilities expense. These decreases were partially offset by a $2.4 million increase in costs to support pre-clinical development of the QLS-215 program, and a $0.4 million increase in other research and platform programs.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><i style="font-style:italic;">General and Administrative Expenses</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">General and administrative expenses increased by $1.2 million to $4.0 million for the three months ended June 30, 2021 from $2.8 million for the three months ended June 30, 2020, an increase of 43%. The increase was attributable to a $0.7 million increase in employee related costs, a $0.5 million increase in consulting and professional fees, and a $0.1 million increase in insurance expense. These increases were partially offset by a $0.1 million decrease in our Delaware franchise tax fee.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><i style="font-style:italic;">Other Income, Net </i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Other income, net decreased by $25,000 to $20,000 thousand for the three months ended June 30, 2021 from $45,000 for the three months ended June 30, 2020. The decrease was primarily attributable to a decrease in interest and investment income due to lower interest rates and an increase in foreign currency fluctuation.</p></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;">21</p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Comparison of the Six Months Ended June 30, 2021 and 2020</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">The following table summarizes our results of operations for the six months ended June 30, 2021 and 2020, together with the dollar change in those items (in thousands):</p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:61.04%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.84%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.37%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:61.04%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td colspan="5" style="vertical-align:bottom;white-space:nowrap;width:23%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Six Months&#160;Ended June 30,</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.78%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Period-to-</b></p></td></tr><tr><td style="vertical-align:bottom;width:61.04%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2021</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2020</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.78%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Period&#160;Change</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:61.04%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Operating expenses:</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> &#160;&#160; </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> &#160;&#160; </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td></tr><tr><td style="vertical-align:bottom;width:61.04%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Research and development</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 6,071</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 12,039</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="white-space:pre-wrap;"> (5,968)</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:61.04%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">General and administrative</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">6,881</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">5,555</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">1,326</p></td></tr><tr><td style="vertical-align:bottom;width:61.04%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Acquired in-process research and development</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">164,617</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.84%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> &#8212;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">164,617</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:61.04%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;">Total operating expenses</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">177,569</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">17,594</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 159,975</span></p></td></tr><tr><td style="vertical-align:bottom;width:61.04%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Loss from operations</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="white-space:pre-wrap;"> (177,569)</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="white-space:pre-wrap;"> (17,594)</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="white-space:pre-wrap;"> (159,975)</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:61.04%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Other income, net</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 19</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.84%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">134</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="white-space:pre-wrap;"> (115)</span></p></td></tr><tr><td style="vertical-align:bottom;width:61.04%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Net loss</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="white-space:pre-wrap;"> (177,550)</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.84%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="white-space:pre-wrap;"> (17,460)</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.37%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="white-space:pre-wrap;"> (160,090)</span></p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><i style="font-style:italic;">Research and Development Expenses</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Research and development expenses decreased by $6.0 million to $6.1 million for the six months ended June 30, 2021 from $12.0 million for the six months ended June 30, 2020, a decrease of 50%. The decrease in research and development expenses was primarily attributable to a $7.4 million decrease in costs to support our edasalonexent program due to stopping activities associated with conducting ongoing clinical trials, a $0.8 million decrease in employee related expenses, a $0.8 million decrease in professional fees, a $0.2 million decrease to the research and development portion of facilities expense and a $0.2 million decrease to the research and development portion of general office expenses. These decreases were partially offset by a $2.9 million increase in costs to support pre-clinical development of the QLS-215 program, a $0.5 million increase in other research and platform programs.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><i style="font-style:italic;">General and Administrative Expenses</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">General and administrative expenses increased by $1.3 million to $6.9 million for the six months ended June 30, 2021 from $5.6 million for the six months ended June 30, 2020, an increase of 24%. The increase was attributable to a $1.0 million increase in employee related costs, a $0.2 million increase in consulting and professional fees, and a $0.2 million increase in insurance expense. These increases were partially offset by a $0.1 million decrease in our Delaware franchise tax fee.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><i style="font-style:italic;">Acquired In-process Research and Development (IPR&amp;D) Expense</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Acquired IPR&amp;D expense was $164.6 million during the six months ended June 30, 2021. Acquired IPR&amp;D expense resulted from the Quellis Acquisition in January 2021. The acquisition cost allocated to acquire IPR&amp;D with no alternative future use was recorded as an expense as of the closing date of the Quellis Acquisition. No acquired IPR&amp;D expenses were incurred during the six months ended June 30, 2020.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><i style="font-style:italic;">Other Income, Net </i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Other (expense) income, net decreased by $0.1 million to $19,000 for the six months ended June 30, 2021 from $0.1 million for the six months ended June 30, 2020. The decrease was primarily attributable to a decrease in interest and investment income due to lower interest rates and an increase in foreign currency fluctuation.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">Liquidity and Capital Resources</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">From our inception through June 30, 2021, we raised an aggregate of $426.0 million, through various private placements of preferred stock, our initial public offering, as well as various other registered equity offerings, including underwritten public offerings, ATM Programs (as defined below), and stock option and warrant exercises.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">As of June 30, 2021, we had cash and cash equivalents of $139.5 million. We expect that our existing cash and cash equivalents are sufficient to support our operating expenses through 2023.</p></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;">22</p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">We will need substantial additional funding to support our continuing operations, future clinical trials and expansion of our pipeline. In addition, QLS-215 or any future product candidates, if approved, may not achieve commercial success. Our commercial revenues, if any, will be derived from sales of medicines that we do not expect to be commercially available for years, if at all. Accordingly, we will need to continue to rely on additional financing to achieve our business objectives. Adequate additional financing may not be available to us on acceptable terms, or at all. If we fail to raise capital as, and when, needed, we may be unable to continue our operations at planned levels and be forced to modify our business strategies and reduce or terminate our operations.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">February&#160;2021 Financing</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">On January&#160;28, 2021 we entered into a Stock Purchase Agreement, or the Purchase Agreement, with certain institutional and accredited investors (the &#8220;February 2021 Financing&#8221;). Pursuant to the Purchase Agreement, we sold an aggregate of 35,573 shares of Series&#160;X Preferred Stock on the February&#160;1, 2021 closing date for gross proceeds of approximately $110.0 million, and net proceeds of $104.3 million.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">January&#160;2020 Financing</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">On January&#160;30, 2020, we entered into an underwriting agreement with Oppenheimer&#160;&amp; Co. Inc. relating to an underwritten public offering (the &#8220;January&#160;2020 Financing&#8221;), of 5,290,000&#160;shares of common stock at a price to the public of&#160;$5.00 per share, including 690,000 shares issued upon the exercise in full by Oppenheimer&#160;&amp; Co. Inc. of its overallotment option. This resulted in gross proceeds of $26.5 million, and net proceeds of $24.6 million.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">At-the-Market Offering</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">We have entered into various sales agreements with Cowen and Company LLC (&#8220;Cowen&#8221;), pursuant to which we could issue and sell shares of common stock, under at-the-market offering programs. On May 20, 2021, we terminated our sales agreement with Cowen. On June 30, 2021, we entered into an Open Market Sale Agreement<sup style="font-size:7.5pt;line-height:100%;top:0pt;vertical-align:top;">SM</sup> with Jefferies LLC (&#8220;Jefferies&#8221;), pursuant to which we could issue and sell shares of common stock, of up to $25.0 million under at-the-market offering programs (collectively, with the Cowen at-the-market offering program, the &#8220;ATM Programs&#8221;). We pay 3% of the gross proceeds from any common stock sold through the ATM Programs. As of June 30, 2021, we have not sold any shares of common stock pursuant to the Jeffries agreement and $25.0 million of common stock remains available for sale under the Jefferies agreement.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">During the six months ended June 30, 2020, we sold an aggregate of 1,100,001 shares of common stock pursuant to our ATM Programs at a weighted average price of $6.87 per share, for gross proceeds of $7.6 million and net proceeds of $7.3 million. There was no activity from the ATM Programs during the six months ended June 30, 2021.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Cash Flows</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Comparison of the Six Months Ended June&#160;30, 2021 and 2020</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The following table provides information regarding our cash flows for the six months ended June&#160;30, 2021 and 2020 (in thousands):</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:73.88%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.24%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:73.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:8pt;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:73.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="5" style="vertical-align:bottom;white-space:nowrap;width:23.76%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Six&#160;Months&#160;Ended June 30,</b></p></td></tr><tr><td style="vertical-align:bottom;width:73.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.72%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2021</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2020</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:73.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Net cash used in operating activities</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="white-space:pre-wrap;"> (16,116)</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="white-space:pre-wrap;"> (14,455)</span></p></td></tr><tr><td style="vertical-align:bottom;width:73.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Net cash provided by investing activities</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 26,445</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 24,310</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:73.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Net cash provided by financing activities</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.24%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 104,261</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 31,889</span></p></td></tr><tr><td style="vertical-align:bottom;width:73.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Net increase in cash, cash equivalents and restricted cash</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.24%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 114,590</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="white-space:pre-wrap;"> 41,744</span></p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><i style="font-style:italic;">Net Cash Used in Operating Activities</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">Net cash used in operating activities was $16.1 million for the six months ended June 30, 2021 and consisted primarily of a net loss of $177.6 million adjusted for the non-cash portion of acquired IPR&amp;D of $164.6 million, stock-based compensation expense of $1.4 million, a gain on warrants of $0.7 million, and a net increase in net assets of $3.8 million, which resulted primarily from a decrease in </p></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;">23</p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;">accounts payable of $2.9 million, a decrease in accrued expenses of $1.9 million, partially offset by a decrease in prepaid expenses of $1.0 million.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Net cash used in operating activities was $14.5 million for the six months ended June 30, 2020 and consisted primarily of a net loss of $17.5 million adjusted for stock-based compensation of $0.7 million and a net decrease in net assets of $2.3 million, which resulted primarily from a decrease in prepaid expenses and other assets of $1.2 million, and an increase in accrued expenses of $1.1 million.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><i style="font-style:italic;">Net Cash Provided by Investing Activities</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Net cash provided by investing activities was $26.4 million for the six months ended June 30, 2021 and consisted primarily of proceeds from maturities of short-term investments of $20.0 million and cash acquired in the Quellis Acquisition of $6.4 million. Net cash provided by investing activities was $24.3 million for the six months ended June 30, 2020 and consisted of proceeds from maturities of short-term investments of $67.1 million partially offset by purchases of short-term investments of $42.8 million.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><i style="font-style:italic;">Net Cash Provided by Financing Activities</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Net cash provided by financing activities was $104.3 million during the six months ended June 30, 2021, which was attributable to net proceeds of $104.3 million from the February 2021 Financing. Net cash provided by financing activities was $31.9 million during the six months ended June 30, 2020, which was primarily attributable to net proceeds of $24.6 million from the January 2020 Financing and net proceeds of $7.3 million from our ATM programs.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Funding Requirements</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Our primary uses of capital are for compensation and related expenses, manufacturing costs for pre-clinical and clinical materials, third party pre-clinical research and development services, legal and other regulatory expenses and general overhead.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">As of June&#160;30, 2021, we had an accumulated deficit of $438.4 million. We have been primarily involved with research and development activities and have incurred operating losses and negative cash flows from operations since our inception.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">As of June&#160;30, 2021, we had available cash and cash equivalents of $139.5 million. We expect that our existing cash and cash equivalents are sufficient to support our operating expenses through 2023.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Our estimate as to how long we expect our cash, cash equivalents and short-term investments to be able to fund our operations is based on assumptions that may prove to be wrong, and we could use our available capital resources sooner than we currently expect. Further, changing circumstances, some of which may be beyond our control, could cause us to consume capital significantly faster than we currently anticipate, and we may need to seek additional funds sooner than planned. Our future funding requirements will depend on many factors, including:</p><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">our ability to integrate QLS-215 into our operations and meet our overall timing expectations for the program;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">the progress, timing, costs and results of clinical trials of, and research and preclinical development efforts for, QLS-215 and any future product candidates, including potential future clinical trials;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">our ability to enter into and the terms and timing of any additional collaborations, licensing or other arrangements that we may establish;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">the number and characteristics of future product candidates that we pursue and their development requirements;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">the outcome, timing and costs of seeking regulatory approvals;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">the costs of commercialization activities for any of our product candidates that receive marketing approval to the extent such costs are not the responsibility of any future collaborators, including the costs and timing of establishing product sales, marketing, market access, distribution, supply chain and manufacturing capabilities, and scaling up the manufacturing of drug substance and drug product to clinical and commercial scale, securing all raw materials necessary to conduct such scale-up and successfully completing all other activities related thereto;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">if we obtain marketing approval of any of our product candidates, revenue, if any, received from commercial sales of our product candidates;</span></td></tr></table></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;">24</p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">if we obtain marketing approval of any of our product candidates, our ability to successfully compete against other approved products that are approved or used as treatments for the indications for which our products are approved, including with respect to QLS-215 in HAE;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">our headcount growth and associated costs;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:justify;">the costs of preparing, filing and prosecuting patent applications, maintaining and protecting our intellectual property rights and defending against intellectual property related claims;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;width:100%;border:0pt;"><tr><td style="width:36pt;"></td><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">&#9679;</td><td style="padding:0pt;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">the impact of the COVID-19 pandemic on our operations, business and prospects; and &#183;</span><span style="display:inline-block;width:9.53pt;"></span><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">the costs of operating as a public company.</span></td></tr></table><div style="margin-top:12pt;"></div><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Identifying potential product candidates and conducting preclinical testing and clinical trials is a time-consuming, expensive and uncertain process that takes years to complete, and we may never generate the necessary data or results required to obtain marketing approval and achieve product sales. In addition, QLS-215 or any future product candidates, if approved, may not achieve commercial success. Our commercial revenues, if any, will be derived from sales of medicines that we do not expect to be commercially available for years, if at all. Accordingly, we will need to continue to rely on additional financing to achieve our business objectives. Adequate additional financing may not be available to us on acceptable terms, or at all.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Until such time, if ever, as we can generate substantial product revenues, we expect to finance our cash needs through a combination of equity offerings, debt financings, collaborations, strategic alliances and licensing arrangements. We do not have any committed external source of funds. To the extent that we raise additional capital through the sale of equity or convertible debt securities, our stockholders&#8217; ownership interests will be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect our stockholders&#8217; rights. Debt financing, if available, would result in periodic payment obligations and may involve agreements that include restrictive covenants that limit our ability to take specific actions, such as incurring debt, making capital expenditures or declaring dividends, that could adversely impact our ability to conduct our business.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">If we raise funds through collaborations, strategic alliances or licensing arrangements with third parties, we may have to relinquish valuable rights to our technologies, future revenue streams, research programs or product candidates or to grant licenses on terms that may not be favorable to us. If we are unable to raise additional funds through equity or debt financings when needed, we may be required to delay, limit, reduce or terminate our product development or future commercialization efforts or grant rights to develop and market product candidates that we would otherwise prefer to develop and market ourselves.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">Off-Balance Sheet Arrangements</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">We did not have during the periods presented, and we do not currently have, any off-balance sheet arrangements, as defined under applicable U.S. Securities and Exchange Commission rules.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">Contractual Obligations</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">As of June&#160;30, 2021, there had been no material changes to our contractual obligations and commitments disclosed under Management&#8217;s Discussion and Analysis of Financial Condition and Results of Operations in our 2020 Annual Report on Form&#160;10-K.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><a id="_0b14cd13_6a08_4a80_817d_9e113f481ec7"></a><a id="Item3QualitativeandQuantitativeDisclosur"></a><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">Item 3. Qualitative and Quantitative Disclosures about Market Risk</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">The market risk inherent in our financial instruments and in our financial position represents the potential loss arising from adverse changes in interest rates. As of June&#160;30, 2021, we had cash and cash equivalents of $139.5 million and, as of December&#160;31, 2020, we had cash, cash equivalents and short-term investments of $44.9 million. Our cash equivalents as of June 30, 2021 consisted of money market funds and U.S. reverse repurchase agreements. Our cash equivalents as of December 31, 2020 consisted of money market funds. Our short-term investments as of December&#160;31, 2020 consisted of U.S. reverse repurchase agreements. Our primary exposure to market risk is interest rate sensitivity, which is affected by changes in the general level of U.S. interest rates. Due to the short-term duration of our investment portfolio and the low risk profile of our investments, an immediate 10% change in interest rates would not have a material effect on the fair market value of our investment portfolio and interest income.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">As of June&#160;30, 2021 and December&#160;31, 2020, we had no material liabilities denominated in foreign currencies.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;">25</p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><a id="_c0a476f8_f9cd_4006_8c16_d79c63ee221e"></a><a id="Item4ControlsandProcedures_343949"></a><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">Item 4. Controls and Procedures</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">Management&#8217;s Evaluation of our Disclosure Controls and Procedures</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">We maintain disclosure controls and procedures (as defined in Rules&#160;13a-15(e)&#160;or 15d-15(e)&#160;under the Securities Exchange Act of 1934, or the Exchange Act) that are designed to ensure that information required to be disclosed in the reports that we file or submit under the Exchange Act is (1)&#160;recorded, processed, summarized, and reported within the time periods specified in the U.S. Securities and Exchange Commission&#8217;s rules&#160;and forms and (2)&#160;accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate, to allow timely decisions regarding required disclosure.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Our management, with the participation of our principal executive officer and principal financial officer, evaluated the effectiveness of our disclosure controls and procedures as of the end of the period covered by this Quarterly Report on Form&#160;10-Q. Our management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving their objectives, and management necessarily applies its judgment in evaluating the cost-benefit relationship of possible controls and procedures. Our principal executive officer and principal financial officer have concluded based upon the evaluation described above that, as of June&#160;30, 2021, our disclosure controls and procedures were effective at the reasonable assurance level.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">We continue to review and document our disclosure controls and procedures, including our internal controls and procedures for financial reporting, and may from time to time make changes aimed at enhancing their effectiveness and to ensure that our systems evolve with our business.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">Changes in Internal Control over Financial Reporting</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">During the six months ended June&#160;30, 2021, there were no changes in our internal control over financial reporting, as such term is defined in Rules&#160;13a-15(f)&#160;and 15(d)-15(f)&#160;promulgated under the Exchange Act, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.28;margin:0pt 0pt 8pt 0pt;"><span style="line-height:1.19;margin-bottom:0pt;visibility:hidden;">&#8203;</span></p></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;">26</p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><a id="_0e519904_3412_4327_b0a1_07db6f5a381b"></a><a id="PARTIIOTHERINFORMATION_252481"></a><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">PART&#160;II &#8211; OTHER INFORMATION</b></p><a id="Item1ARiskFactors_520994"></a><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">Item 1A. Risk Factors</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">There have been no material changes to the risk factors described in Part&#160;I,&#160;Item 1A, Risk Factors of our 2020 Annual Report on Form&#160;10-K&#160;for the fiscal year ended December&#160;31, 2020.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><a id="_28686c8c_d73f_4b2b_b9f2_31ae284eca25"></a><a id="Item6Exhibits_784279"></a><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">Item 6. Exhibits</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-indent:18pt;margin:0pt;">The exhibits filed as part of this Quarterly Report on Form&#160;10-Q are set forth on the Exhibits Index below:</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:8%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"></div></div></td><td style="vertical-align:bottom;width:2%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"></div></div></td><td style="vertical-align:bottom;width:90%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"></div></div></td></tr><tr><td style="vertical-align:bottom;width:8%;border-bottom:1.0pt solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><b style="font-weight:bold;">Exhibit</b><br /><b style="font-weight:bold;">Number</b></p></td><td style="vertical-align:bottom;width:2%;border-bottom:1.0pt solid transparent;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td style="vertical-align:bottom;width:90%;border-bottom:1.0pt solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Exhibit</b></p></td></tr><tr><td style="vertical-align:top;width:8%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;">10.1</p></td><td style="vertical-align:top;width:2%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:top;width:90%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><a style="-sec-extract:exhibit;" href="https://www.sec.gov/Archives/edgar/data/1454789/000110465921075724/tm2118211d1_ex99-1.htm"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Catabasis Pharmaceuticals, Inc. Amended and Restated 2015 Stock Incentive Plan, effective as of June 2, 2021 (incorporated by reference to Exhibit 99.1 to the Form 8-K (File No. 001-37467) filed with the Securities and Exchange Commission on June 2, 2021)</span></a></p></td></tr><tr><td style="vertical-align:top;width:8%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;">31.1</p></td><td style="vertical-align:top;width:2%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:top;width:90%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><a style="-sec-extract:exhibit;" href="catb-20210630xex31d1.htm"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Certification of principal executive officer pursuant to Rule&#160;13a-14(a)&#160;or Rule&#160;15d-14(a)&#160;of the Securities Exchange Act of 1934, as adopted pursuant to Section&#160;302 of the Sarbanes-Oxley Act of 2002</span></a></p></td></tr><tr><td style="vertical-align:top;width:8%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;">31.2</p></td><td style="vertical-align:top;width:2%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:top;width:90%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><a style="-sec-extract:exhibit;" href="catb-20210630xex31d2.htm"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Certification of principal financial officer pursuant to Rule&#160;13a-14(a)&#160;or Rule&#160;15d-14(a)&#160;of the Securities Exchange Act of 1934, as adopted pursuant to Section&#160;302 of the Sarbanes-Oxley Act of 2002</span></a></p></td></tr><tr><td style="vertical-align:top;width:8%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;">32.1</p></td><td style="vertical-align:top;width:2%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:top;width:90%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><a style="-sec-extract:exhibit;" href="catb-20210630xex32d1.htm"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Certification pursuant to 18 U.S.C. 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<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 30pt 0pt;"><a href="#TOC"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">Table of Contents</span></a></p></div><div style="clear:both;max-width:100%;position:relative;"><a id="_c63e9560_dbb0_40a2_aa0b_76a500f71b19"></a><a id="SIGNATURES_688981"></a><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">SIGNATURES</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:top;width:50%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="position:absolute;top:0pt;width:100%;"></div></div></td><td style="vertical-align:top;width:3%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="position:absolute;top:0pt;width:100%;"></div></div></td><td style="vertical-align:top;width:47%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="position:absolute;top:0pt;width:100%;"></div></div></td></tr><tr><td style="vertical-align:top;width:50%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td colspan="2" style="vertical-align:top;width:50%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Catabasis Pharmaceuticals,&#160;Inc.</p></td></tr><tr><td style="vertical-align:top;width:50%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td colspan="2" style="vertical-align:top;width:50%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td></tr><tr><td style="vertical-align:top;width:50%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Date: August&#160;9, 2021</p></td><td style="vertical-align:top;width:3%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">By:</p></td><td style="vertical-align:top;width:47%;border-bottom:1.0pt solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">/s/ NOAH C. CLAUSER</p></td></tr><tr><td style="vertical-align:top;width:50%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:top;width:3%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:top;width:47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Noah C. Clauser</p></td></tr><tr><td style="vertical-align:middle;width:50%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:middle;width:3%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:middle;width:47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><i style="font-style:italic;">Chief Financial Officer (Principal Financial Officer)</i></p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.28;margin:0pt 0pt 8pt 0pt;"><span style="line-height:1.19;margin-bottom:0pt;visibility:hidden;">&#8203;</span></p></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:24pt 0pt 0pt 0pt;">28</p></div></div>
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<TYPE>EX-31.1
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<FILENAME>catb-20210630xex31d1.htm
<DESCRIPTION>EXHIBIT-31.1
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<!--Enhanced HTML document created with Toppan Merrill Bridge  9.11.0.85--><!--Created on: 8/9/2021 02:48:25 PM (UTC)--><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta charset="UTF-8"><title></title></head><body><div style="margin-top:30pt;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="clear:both;max-width:100%;position:relative;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt;"><b style="font-weight:bold;">Exhibit 31.1</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;"><b style="font-weight:bold;text-decoration:underline;text-decoration-color:#000000;">CERTIFICATION</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">I, Jill C. Milne, certify that:</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><table border="0" cellpadding="0" cellspacing="0"><tr><td style="vertical-align:text-top;white-space:nowrap;width:36pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">1.</p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">I have reviewed this Quarterly Report on Form 10-Q of Catabasis Pharmaceuticals, Inc.;</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;padding-left:36pt;text-indent:-36pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><table border="0" cellpadding="0" cellspacing="0"><tr><td style="vertical-align:text-top;white-space:nowrap;width:36pt;padding:0pt;"><p style="font-family:'Times New 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style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations, and cash flows of the registrant as of, and for, the periods presented in this report;</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;padding-left:36pt;text-indent:-36pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><table border="0" cellpadding="0" cellspacing="0"><tr><td style="vertical-align:text-top;white-space:nowrap;width:36pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">4.</p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">The registrant&#8217;s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;padding-left:36pt;text-indent:-36pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><table border="0" cellpadding="0" cellspacing="0"><tr><td style="width:36pt;padding:0pt;"></td><td style="vertical-align:text-top;white-space:nowrap;width:36pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">a)</p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;</p></td></tr></table><table border="0" cellpadding="0" cellspacing="0"><tr><td style="width:36pt;padding:0pt;"></td><td style="vertical-align:text-top;white-space:nowrap;width:36pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">b)</p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;</p></td></tr></table><table border="0" cellpadding="0" cellspacing="0"><tr><td style="width:36pt;padding:0pt;"></td><td style="vertical-align:text-top;white-space:nowrap;width:36pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">c)</p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">Evaluated the effectiveness of the registrant&#8217;s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and</p></td></tr></table><table border="0" cellpadding="0" cellspacing="0"><tr><td style="width:36pt;padding:0pt;"></td><td 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cellspacing="0"><tr><td style="vertical-align:text-top;white-space:nowrap;width:36pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">5.</p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">The registrant&#8217;s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant&#8217;s auditors and the audit committee of the registrant&#8217;s board of directors (or persons performing the equivalent functions):</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;padding-left:36pt;text-indent:-36pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><table border="0" cellpadding="0" cellspacing="0"><tr><td style="width:36pt;padding:0pt;"></td><td style="vertical-align:text-top;white-space:nowrap;width:36pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">a)</p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant&#8217;s ability to record, process, summarize, and report financial information; and</p></td></tr></table><table border="0" cellpadding="0" cellspacing="0"><tr><td style="width:36pt;padding:0pt;"></td><td style="vertical-align:text-top;white-space:nowrap;width:36pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">b)</p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant&#8217;s internal control over financial reporting.</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;padding-left:36pt;text-indent:-36pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><div><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;width:100%;" align="center"><tr><td style="vertical-align:top;width:50%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Date:&#160;&#160;August 9, 2021</p></td><td style="vertical-align:top;width:50%;border-bottom:1px solid #000000;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">/s/ JILL C. MILNE, PH.D.</p></td></tr><tr><td style="vertical-align:top;width:50%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p></td><td style="vertical-align:top;width:50%;border-top:1px solid #000000;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Jill C. Milne, Ph.D.</p></td></tr><tr><td style="vertical-align:top;width:50%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p></td><td style="vertical-align:top;width:50%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">President and Chief Executive Officer (Principal Executive Officer)</p></td></tr></table></div><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p></div></div><hr style="background-color:#000000;clear:both;color:#000000;height:2pt;line-height:0;margin-left:5.88%;margin-right:5.88%;margin-top:30pt;page-break-after:avoid;width:88.24%;border-width:0;"></body></html>
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<!--Enhanced HTML document created with Toppan Merrill Bridge  9.11.0.85--><!--Created on: 8/9/2021 02:48:28 PM (UTC)--><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta charset="UTF-8"><title></title></head><body><div style="margin-top:30pt;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="clear:both;max-width:100%;position:relative;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt;"><b style="font-weight:bold;">Exhibit 31.2</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;"><b style="font-weight:bold;text-decoration:underline;text-decoration-color:#000000;">CERTIFICATION</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">I, Noah C. Clauser, certify that:</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><table border="0" cellpadding="0" cellspacing="0"><tr><td style="vertical-align:text-top;white-space:nowrap;width:36pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">1.</p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">I have reviewed this Quarterly Report on Form 10-Q of Catabasis Pharmaceuticals, Inc.;</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;padding-left:36pt;text-indent:-36pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><table border="0" cellpadding="0" cellspacing="0"><tr><td style="vertical-align:text-top;white-space:nowrap;width:36pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">2.</p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;padding-left:36pt;text-indent:-36pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><table border="0" cellpadding="0" cellspacing="0"><tr><td style="vertical-align:text-top;white-space:nowrap;width:36pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">3.</p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations, and cash flows of the registrant as of, and for, the periods presented in this report;</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;padding-left:36pt;text-indent:-36pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><table border="0" cellpadding="0" cellspacing="0"><tr><td style="vertical-align:text-top;white-space:nowrap;width:36pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">4.</p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">The registrant&#8217;s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;padding-left:36pt;text-indent:-36pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><table border="0" cellpadding="0" cellspacing="0"><tr><td style="width:36pt;padding:0pt;"></td><td style="vertical-align:text-top;white-space:nowrap;width:36pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">a)</p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;</p></td></tr></table><table border="0" cellpadding="0" cellspacing="0"><tr><td style="width:36pt;padding:0pt;"></td><td style="vertical-align:text-top;white-space:nowrap;width:36pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">b)</p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;</p></td></tr></table><table border="0" cellpadding="0" cellspacing="0"><tr><td style="width:36pt;padding:0pt;"></td><td style="vertical-align:text-top;white-space:nowrap;width:36pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">c)</p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">Evaluated the effectiveness of the registrant&#8217;s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and</p></td></tr></table><table border="0" cellpadding="0" cellspacing="0"><tr><td style="width:36pt;padding:0pt;"></td><td style="vertical-align:text-top;white-space:nowrap;width:36pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">d)</p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">Disclosed in this report any change in the registrant&#8217;s internal control over financial reporting that occurred during the registrant&#8217;s most recent fiscal quarter (the registrant&#8217;s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant&#8217;s internal control over financial reporting; and</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;padding-left:36pt;text-indent:-36pt;margin:0pt 0pt 0pt 36pt;"><font style="margin-left:0pt;visibility:hidden;">&#8203;</font></p><table border="0" cellpadding="0" cellspacing="0"><tr><td style="vertical-align:text-top;white-space:nowrap;width:36pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">5.</p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">The registrant&#8217;s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant&#8217;s auditors and the audit committee of the registrant&#8217;s board of directors (or persons performing the equivalent functions):</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;padding-left:36pt;text-indent:-36pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><table border="0" cellpadding="0" cellspacing="0"><tr><td style="width:36pt;padding:0pt;"></td><td style="vertical-align:text-top;white-space:nowrap;width:36pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">a)</p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant&#8217;s ability to record, process, summarize, and report financial information; and</p></td></tr></table><table border="0" cellpadding="0" cellspacing="0"><tr><td style="width:36pt;padding:0pt;"></td><td style="vertical-align:text-top;white-space:nowrap;width:36pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">b)</p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant&#8217;s internal control over financial reporting.</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;padding-left:36pt;text-indent:-36pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><div><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;width:100%;" align="center"><tr><td style="vertical-align:top;width:50%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Date:&#160;&#160;August 9, 2021</p></td><td style="vertical-align:top;width:50%;border-bottom:1px solid #000000;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">/s/ NOAH C. CLAUSER</p></td></tr><tr><td style="vertical-align:top;width:50%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p></td><td style="vertical-align:top;width:50%;border-top:1px solid #000000;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:justify;margin:0pt;">Noah C. Clauser</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:justify;margin:0pt;">Chief Financial Officer (Principal Financial Officer)</p></td></tr></table></div><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p></div></div><hr style="background-color:#000000;clear:both;color:#000000;height:2pt;line-height:0;margin-left:5.88%;margin-right:5.88%;margin-top:30pt;page-break-after:avoid;width:88.24%;border-width:0;"></body></html>
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<TYPE>EX-32.1
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<!--Enhanced HTML document created with Toppan Merrill Bridge  9.11.0.85--><!--Created on: 8/9/2021 02:48:32 PM (UTC)--><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta charset="UTF-8"><title></title></head><body><div style="margin-top:30pt;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="clear:both;max-width:100%;position:relative;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 0pt 0pt 396pt;"><b style="font-weight:bold;">Exhibit 32.1</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 0pt 0pt 396pt;"><font style="margin-left:0pt;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;">CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;">AS ADOPTED PURSUANT TO</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;">SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">In connection with the Quarterly Report on Form 10-Q of Catabasis Pharmaceuticals, Inc. (the &#8220;Company&#8221;) for the period ended June 30, 2021 as filed with the Securities and Exchange Commission on the date hereof (the &#8220;Report&#8221;), the undersigned officers of the Company hereby certify, pursuant to 18 U.S.C. Section 1350, that:</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0pt 36pt;">(1)&#160;&#160;the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0pt 36pt;">(2)&#160;&#160;the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><div><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;table-layout:auto;width:100%;" align="center"><tr><td style="vertical-align:top;width:50%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Date:&#160;&#160;August 9, 2021</p></td><td style="vertical-align:top;width:50%;border-bottom:1px solid #000000;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">/s/ JILL C. MILNE, PH.D.</p></td></tr><tr><td style="vertical-align:top;width:50%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p></td><td style="vertical-align:top;width:50%;border-top:1px solid #000000;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Jill C. Milne, Ph.D.</p></td></tr><tr style="height:5pt;"><td style="vertical-align:top;width:50%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p></td><td style="vertical-align:top;width:50%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">President and Chief Executive Officer (Principal Executive Officer)</p></td></tr></table></div><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:justify;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><div><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;table-layout:auto;width:100%;" align="center"><tr><td style="vertical-align:top;width:50%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Date:&#160;&#160;August 9, 2021</p></td><td style="vertical-align:top;width:50%;border-bottom:1px solid #000000;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">/s/ NOAH C. CLAUSER</p></td></tr><tr><td style="vertical-align:top;width:50%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p></td><td style="vertical-align:top;width:50%;border-top:1px solid #000000;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Noah C. 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  <element id="catb_AccruedContractedResearchCostsCurrent" name="AccruedContractedResearchCostsCurrent" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_CommonStockWarrantsMember" name="CommonStockWarrantsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_EmployeeStockPurchasePlan2015Member" name="EmployeeStockPurchasePlan2015Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_CommonStockReservedForFutureIssuanceTextBlock" name="CommonStockReservedForFutureIssuanceTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_AtMarketOfferingMember" name="AtMarketOfferingMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_ProceedsFromIssuanceOfAtMarketOffering" name="ProceedsFromIssuanceOfAtMarketOffering" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_CowenAndCompanyLLCMember" name="CowenAndCompanyLLCMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_PercentageOfCommissionPaidToUnderwriterBasedOnProceedsFromOffering" name="PercentageOfCommissionPaidToUnderwriterBasedOnProceedsFromOffering" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_CommonStockReservedForFutureIssuanceAbstract" name="CommonStockReservedForFutureIssuanceAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_AccruedSeveranceCurrent" name="AccruedSeveranceCurrent" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_OppenheimerCo.IncMember" name="OppenheimerCo.IncMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_ShortTermInvestmentsTextBlock" name="ShortTermInvestmentsTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_ShortTermSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions" name="ShortTermSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_RemainingAvailableUnderCurrentSalesAgreement" name="RemainingAvailableUnderCurrentSalesAgreement" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_WarrantsAndRightsOutstandingWeightedAverageRemainingContractualTerm" name="WarrantsAndRightsOutstandingWeightedAverageRemainingContractualTerm" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_ReverseRepurchaseAgreementsMember" name="ReverseRepurchaseAgreementsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_CommonStockOptionsReservedMember" name="CommonStockOptionsReservedMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_CommonStockOptionsOutstandingMember" name="CommonStockOptionsOutstandingMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_PercentageOfInvestmentAmountToCollateralizedDepositsValue" name="PercentageOfInvestmentAmountToCollateralizedDepositsValue" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_IncreaseDecreaseInRightOfUseAssetOperating" name="IncreaseDecreaseInRightOfUseAssetOperating" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_ShortTermInvestmentsAtAmortizedCost" name="ShortTermInvestmentsAtAmortizedCost" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_IssuanceOfCommonStockAndWarrantsInPublicOfferingsValueNetOfIssuanceCosts" name="IssuanceOfCommonStockAndWarrantsInPublicOfferingsValueNetOfIssuanceCosts" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_UnderwritingPublicOffering2020Member" name="UnderwritingPublicOffering2020Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_WarrantsIssuedIn2014Member" name="WarrantsIssuedIn2014Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_WarrantsIssuedIn2015Member" name="WarrantsIssuedIn2015Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_WarrantsIssuedIn2018Member" name="WarrantsIssuedIn2018Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_WarrantsIssuedIn2019Member" name="WarrantsIssuedIn2019Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember" name="AgreementAndPlanOfMergerQuellisBiosciencesIncMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_StockPurchaseAgreementInstitutionalAndAccreditedInvestorsMember" name="StockPurchaseAgreementInstitutionalAndAccreditedInvestorsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_SeriesXPreferredStockMember" name="SeriesXPreferredStockMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_IssuanceOfCommonStockAndWarrantsInPublicOfferingsShares" name="IssuanceOfCommonStockAndWarrantsInPublicOfferingsShares" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_SharesIssuedInMergerMember" name="SharesIssuedInMergerMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_SharesIssuedIn2021FinancingMember" name="SharesIssuedIn2021FinancingMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_WarrantsAssumedInMergerMember" name="WarrantsAssumedInMergerMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_PercentageOfOwnershipOnCommonStockIssuedAndOutstandingImmediatelyAfterConversionInitially" name="PercentageOfOwnershipOnCommonStockIssuedAndOutstandingImmediatelyAfterConversionInitially" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_PercentageOfOwnershipOnCommonStockIssuedAndOutstandingImmediatelyAfterConversionThereafter" name="PercentageOfOwnershipOnCommonStockIssuedAndOutstandingImmediatelyAfterConversionThereafter" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_SummaryOfSignificantAccountingPoliciesPoliciesTextBlock" name="SummaryOfSignificantAccountingPoliciesPoliciesTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_AcquiredInProcessResearchAndDevelopment" name="AcquiredInProcessResearchAndDevelopment" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_NonCashPortionOfAcquiredResearchAndDevelopment" name="NonCashPortionOfAcquiredResearchAndDevelopment" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherThanIntangibleAssetsAndDeferredTaxLiabilities" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherThanIntangibleAssetsAndDeferredTaxLiabilities" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAcquiredResearchAndDevelopment" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAcquiredResearchAndDevelopment" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccruedLiabilities" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccruedLiabilities" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_WarrantsIssuedIn2021Member" name="WarrantsIssuedIn2021Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionGross" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionGross" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionWeightedAverageExercisePrice" nillable="true" type="num:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodValueNewIssues" name="TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodValueNewIssues" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_TemporaryEquityStockIssuedInAcquisitionValueNewIssues" name="TemporaryEquityStockIssuedInAcquisitionValueNewIssues" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_TemporaryEquityStockIssuedInAcquisitionSharesNewIssues" name="TemporaryEquityStockIssuedInAcquisitionSharesNewIssues" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodSharesNewIssues" name="TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodSharesNewIssues" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_StockIssuedDuringPeriodValueNewIssuesAtMarketOfferings" name="StockIssuedDuringPeriodValueNewIssuesAtMarketOfferings" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_StockIssuedDuringPeriodSharesNewIssuesAtMarketOfferings" name="StockIssuedDuringPeriodSharesNewIssuesAtMarketOfferings" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_AdjustmentsToAdditionalPaidInCapitalCommonStockIssuedInPublicOffering" name="AdjustmentsToAdditionalPaidInCapitalCommonStockIssuedInPublicOffering" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_ScheduleOfPreferredStockOrWarrantsToPurchasePreferredStockTableTextBlock" name="ScheduleOfPreferredStockOrWarrantsToPurchasePreferredStockTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_JefferiesMember" name="JefferiesMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_ReclassificationOfEquityClassifiedWarrants" name="ReclassificationOfEquityClassifiedWarrants" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_ReclassificationOfPreferredStockToEquity" name="ReclassificationOfPreferredStockToEquity" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_ReclassificationOfPreferredStockToEquityShares" name="ReclassificationOfPreferredStockToEquityShares" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_PreferredStockDiscountPolicyTextBlock" name="PreferredStockDiscountPolicyTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_NonCashReturnRelatedToCommonStock" name="NonCashReturnRelatedToCommonStock" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_GainLossOnWarrantInherited" name="GainLossOnWarrantInherited" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_DividendOnConvertiblePreferredStockRelatedToBeneficialConversionFeatureAndIssuanceCosts" name="DividendOnConvertiblePreferredStockRelatedToBeneficialConversionFeatureAndIssuanceCosts" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_SeriesXRedeemableConvertiblePreferredStockMember" name="SeriesXRedeemableConvertiblePreferredStockMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_ReclassificationOfWarrantLiabilityUponConversionOfWarrants" name="ReclassificationOfWarrantLiabilityUponConversionOfWarrants" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodGrossValue" name="TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodGrossValue" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_PreferredStockConvertibleSharesIssuable" name="PreferredStockConvertibleSharesIssuable" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_TemporaryEquityConversionBasis" name="TemporaryEquityConversionBasis" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_AgreementAndPlanOfMergerAbstract" name="AgreementAndPlanOfMergerAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_StockPurchaseAgreementAndSeriesXPreferredStockAbstract" name="StockPurchaseAgreementAndSeriesXPreferredStockAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_January2020FinancingAbstract" name="January2020FinancingAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_CommonStockSaleAgreementValue" name="CommonStockSaleAgreementValue" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_CommonStockReverseStockSplitRatio" name="CommonStockReverseStockSplitRatio" nillable="true" type="xbrli:pureItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_CommonStockValueReclassificationsIntoPermanentEquityFromTemporaryEquity" name="CommonStockValueReclassificationsIntoPermanentEquityFromTemporaryEquity" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_CommonStockSharesReclassificationsIntoPermanentEquityFromTemporaryEquity" name="CommonStockSharesReclassificationsIntoPermanentEquityFromTemporaryEquity" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_StockIssuedDuringPeriodValueIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares" name="StockIssuedDuringPeriodValueIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_StockIssuedDuringPeriodSharesIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares" name="StockIssuedDuringPeriodSharesIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_IncreaseDecreaseInEquityDueToDividendsOnConvertiblePreferredStockBeneficialConversionFeature" name="IncreaseDecreaseInEquityDueToDividendsOnConvertiblePreferredStockBeneficialConversionFeature" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="catb_TemporaryEquityConversionValue" name="TemporaryEquityConversionValue" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
</xsd:schema>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.CAL
<SEQUENCE>6
<FILENAME>catb-20210630_cal.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION CALCULATION LINKBASE
<TEXT>
<XBRL>
<?xml version="1.0" encoding="us-ascii"?>
<!--XBRL document created with Toppan Merrill Bridge  9.6.7811.37134 -->
<!--Based on XBRL 2.1-->
<!--Created on: 8/9/2021 2:48:50 PM-->
<!--Modified on: 8/9/2021 2:48:50 PM-->
<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xlink="http://www.w3.org/1999/xlink">
  <roleRef xlink:type="simple" xlink:href="catb-20210630.xsd#StatementCondensedConsolidatedBalanceSheets" roleURI="http://www.catabasis.com/role/StatementCondensedConsolidatedBalanceSheets" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="catb-20210630.xsd#StatementCondensedConsolidatedStatementsOfOperations" roleURI="http://www.catabasis.com/role/StatementCondensedConsolidatedStatementsOfOperations" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_LocalPhoneNumber" xlink:label="dei_LocalPhoneNumber" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShortTermInvestments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Short-term investments</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Prepaid expenses and other current assets</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="us-gaap_AssetsCurrent" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsCurrent" xlink:to="us-gaap_AssetsCurrent_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetsCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Assets, Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_AssetsCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total current assets</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseRightOfUseAsset" xlink:to="us-gaap_OperatingLeaseRightOfUseAsset_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Right-of-use asset</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Assets" xlink:to="us-gaap_Assets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Assets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_Assets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total assets</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current liabilities:</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accrued expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent" xlink:label="us-gaap_OperatingLeaseLiabilityCurrent" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingLeaseLiabilityCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current portion of operating lease liabilities</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="us-gaap_LiabilitiesCurrent" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Liabilities, Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total current liabilities</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingLeaseLiabilityNoncurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Long-term portion of operating lease liabilities</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Liabilities" xlink:label="us-gaap_Liabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Liabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_Liabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total liabilities</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="us-gaap_CommitmentsAndContingencies" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_StockholdersEquity_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Liabilities and Equity</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockParOrStatedValuePerShare" xlink:to="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Preferred Stock, Par or Stated Value Per Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Preferred stock, par value (in dollars per share)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockSharesAuthorized" xlink:label="us-gaap_PreferredStockSharesAuthorized" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesAuthorized" xlink:to="us-gaap_PreferredStockSharesAuthorized_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Preferred Stock, Shares Authorized</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Preferred stock, authorized (in shares)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockSharesIssued" xlink:label="us-gaap_PreferredStockSharesIssued" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesIssued" xlink:to="us-gaap_PreferredStockSharesIssued_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Preferred Stock, Shares Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Preferred stock, issued (in shares)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockSharesOutstanding" xlink:label="us-gaap_PreferredStockSharesOutstanding" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesOutstanding" xlink:to="us-gaap_PreferredStockSharesOutstanding_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Preferred Stock, Shares Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Preferred stock, outstanding (in shares)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Preferred stock, outstanding (in shares)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockParOrStatedValuePerShare" xlink:to="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Common Stock, Par or Stated Value Per Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Common stock, par value (in dollars per share)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="us-gaap_CommonStockSharesAuthorized" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesAuthorized" xlink:to="us-gaap_CommonStockSharesAuthorized_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Common Stock, Shares Authorized</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Common stock, authorized (in shares)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="us-gaap_CommonStockSharesIssued" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesIssued" xlink:to="us-gaap_CommonStockSharesIssued_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Common Stock, Shares, Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Balance, end of period (in shares)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Balance, beginning of period (in shares)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Common stock, issued (in shares)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="us-gaap_CommonStockSharesOutstanding" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesOutstanding" xlink:to="us-gaap_CommonStockSharesOutstanding_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Common Stock, Shares, Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Common stock, outstanding (in shares)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="us-gaap_IncomeStatementAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_IncomeStatementAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeStatementAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Condensed Consolidated Statements of Operations</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingExpensesAbstract" xlink:label="us-gaap_OperatingExpensesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingExpensesAbstract" xlink:to="us-gaap_OperatingExpensesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingExpensesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Operating Expenses [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingExpensesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Operating expenses:</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="us-gaap_ResearchAndDevelopmentExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ResearchAndDevelopmentExpense" xlink:to="us-gaap_ResearchAndDevelopmentExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ResearchAndDevelopmentExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Research and Development Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ResearchAndDevelopmentExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Research and development</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="us-gaap_GeneralAndAdministrativeExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">General and Administrative Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">General and administrative</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_AcquiredInProcessResearchAndDevelopment" xlink:label="catb_AcquiredInProcessResearchAndDevelopment" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_AcquiredInProcessResearchAndDevelopment" xlink:to="catb_AcquiredInProcessResearchAndDevelopment_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_AcquiredInProcessResearchAndDevelopment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of acquired in-process research and development expense.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_AcquiredInProcessResearchAndDevelopment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Acquired in-process Research and Development</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net Income (Loss) Available to Common Stockholders, Basic</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract" xlink:label="us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total other comprehensive gain:</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TemporaryEquitySharesIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Temporary Equity, Shares Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_TemporaryEquitySharesIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Balance, end of period (in shares)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_TemporaryEquitySharesIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Balance, beginning of period (in shares)</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodValueNewIssues" xlink:label="catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodValueNewIssues" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodValueNewIssues" xlink:to="catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodValueNewIssues_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodValueNewIssues_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Value of new stock classified as temporary equity issued in a private offering during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodValueNewIssues_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Temporary Equity, Stock Issued in a Private Offering During Period, Value, New Issues</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodValueNewIssues_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issuance of preferred stock in a private offering of public equity, net of issuance costs</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodSharesNewIssues" xlink:label="catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodSharesNewIssues" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodSharesNewIssues" xlink:to="catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodSharesNewIssues_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodSharesNewIssues_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of new shares classified as temporary equity issued in a private offering during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodSharesNewIssues_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Temporary Equity, Stock Issued in a Private Offering During Period, Shares, New Issues</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodSharesNewIssues_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issuance of preferred stock in a private offering of public equity, net of issuance costs (in shares)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodSharesNewIssues_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issuance of preferred stock in a private offering of public equity, net of issuance costs (in shares)</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_TemporaryEquityStockIssuedInAcquisitionValueNewIssues" xlink:label="catb_TemporaryEquityStockIssuedInAcquisitionValueNewIssues" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_TemporaryEquityStockIssuedInAcquisitionValueNewIssues" xlink:to="catb_TemporaryEquityStockIssuedInAcquisitionValueNewIssues_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_TemporaryEquityStockIssuedInAcquisitionValueNewIssues_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Value of new stock classified as temporary equity issued in an acquisition during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_TemporaryEquityStockIssuedInAcquisitionValueNewIssues_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Temporary Equity, Stock Issued in an Acquisition, Value, New Issues</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_TemporaryEquityStockIssuedInAcquisitionValueNewIssues_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issuance of preferred stock upon acquisition of Quellis</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_TemporaryEquityStockIssuedInAcquisitionSharesNewIssues" xlink:label="catb_TemporaryEquityStockIssuedInAcquisitionSharesNewIssues" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_TemporaryEquityStockIssuedInAcquisitionSharesNewIssues" xlink:to="catb_TemporaryEquityStockIssuedInAcquisitionSharesNewIssues_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_TemporaryEquityStockIssuedInAcquisitionSharesNewIssues_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of new shares classified as temporary equity issued in an acquisition during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_TemporaryEquityStockIssuedInAcquisitionSharesNewIssues_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Temporary Equity, Stock Issued in an Acquisition, Shares, New Issues</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_TemporaryEquityStockIssuedInAcquisitionSharesNewIssues_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issuance of preferred stock upon acquisition of Quellis (in shares)</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_ReclassificationOfPreferredStockToEquity" xlink:label="catb_ReclassificationOfPreferredStockToEquity" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_ReclassificationOfPreferredStockToEquity" xlink:to="catb_ReclassificationOfPreferredStockToEquity_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_ReclassificationOfPreferredStockToEquity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of preferred stock reclassified to equity.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_ReclassificationOfPreferredStockToEquity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reclassification Of Preferred Stock To Equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="catb_ReclassificationOfPreferredStockToEquity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reclassification of preferred stock to permanent equity</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_ReclassificationOfPreferredStockToEquityShares" xlink:label="catb_ReclassificationOfPreferredStockToEquityShares" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_ReclassificationOfPreferredStockToEquityShares" xlink:to="catb_ReclassificationOfPreferredStockToEquityShares_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_ReclassificationOfPreferredStockToEquityShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The number of preferred shares reclassified to equity.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_ReclassificationOfPreferredStockToEquityShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reclassification Of Preferred Stock To Equity, Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="catb_ReclassificationOfPreferredStockToEquityShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reclassification of preferred stock to permanent equity (in shares)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementOfStockholdersEquityAbstract" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfStockholdersEquityAbstract" xlink:to="us-gaap_StatementOfStockholdersEquityAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Condensed Consolidated Statements of Stockholders' Equity</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:label="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) in Stockholders' Equity [Roll Forward]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) in Shareholders' Equity</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_CommonStockValueReclassificationsIntoPermanentEquityFromTemporaryEquity" xlink:label="catb_CommonStockValueReclassificationsIntoPermanentEquityFromTemporaryEquity" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_CommonStockValueReclassificationsIntoPermanentEquityFromTemporaryEquity" xlink:to="catb_CommonStockValueReclassificationsIntoPermanentEquityFromTemporaryEquity_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_CommonStockValueReclassificationsIntoPermanentEquityFromTemporaryEquity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount reclassified into permanent equity from temporary equity.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_CommonStockValueReclassificationsIntoPermanentEquityFromTemporaryEquity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Common Stock, Value, Reclassifications into Permanent Equity from Temporary Equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_CommonStockValueReclassificationsIntoPermanentEquityFromTemporaryEquity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reclassification of preferred stock to permanent equity</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_CommonStockSharesReclassificationsIntoPermanentEquityFromTemporaryEquity" xlink:label="catb_CommonStockSharesReclassificationsIntoPermanentEquityFromTemporaryEquity" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_CommonStockSharesReclassificationsIntoPermanentEquityFromTemporaryEquity" xlink:to="catb_CommonStockSharesReclassificationsIntoPermanentEquityFromTemporaryEquity_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_CommonStockSharesReclassificationsIntoPermanentEquityFromTemporaryEquity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The number of shares reclassified into permanent equity from temporary equity.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_CommonStockSharesReclassificationsIntoPermanentEquityFromTemporaryEquity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Common Stock, Shares, Reclassifications into Permanent Equity from Temporary Equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_CommonStockSharesReclassificationsIntoPermanentEquityFromTemporaryEquity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reclassification of preferred stock to permanent equity (in shares)</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_StockIssuedDuringPeriodValueIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares" xlink:label="catb_StockIssuedDuringPeriodValueIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_StockIssuedDuringPeriodValueIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares" xlink:to="catb_StockIssuedDuringPeriodValueIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_StockIssuedDuringPeriodValueIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The increase (decrease) in value of stock issued during the period upon the conversion of preferred shares into common shares.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_StockIssuedDuringPeriodValueIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock Issued During Period, Value, Increase (Decrease) Due to Conversion of Preferred Shares into Common Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_StockIssuedDuringPeriodValueIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Conversion of preferred stock into common stock</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_StockIssuedDuringPeriodSharesIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares" xlink:label="catb_StockIssuedDuringPeriodSharesIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_StockIssuedDuringPeriodSharesIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares" xlink:to="catb_StockIssuedDuringPeriodSharesIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_StockIssuedDuringPeriodSharesIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The increase (decrease) in number of shares issued during the period upon the conversion of preferred shares into common shares.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_StockIssuedDuringPeriodSharesIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock Issued During Period, Shares, Increase (Decrease) Due to Conversion of Preferred Shares into Common Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="catb_StockIssuedDuringPeriodSharesIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Conversion of preferred stock into common stock (in shares)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_StockIssuedDuringPeriodSharesIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Conversion of preferred stock into common stock (in shares)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature" xlink:to="us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adjustments to Additional Paid in Capital, Convertible Debt with Conversion Feature</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issuance of preferred stock in a private offering of public equity, net of issuance costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Beneficial conversion feature</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueAcquisitions" xlink:label="us-gaap_StockIssuedDuringPeriodValueAcquisitions" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueAcquisitions" xlink:to="us-gaap_StockIssuedDuringPeriodValueAcquisitions_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodValueAcquisitions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock Issued During Period, Value, Acquisitions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodValueAcquisitions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issuance of common stock upon acquisition of Quellis</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesAcquisitions" xlink:label="us-gaap_StockIssuedDuringPeriodSharesAcquisitions" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesAcquisitions" xlink:to="us-gaap_StockIssuedDuringPeriodSharesAcquisitions_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesAcquisitions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock Issued During Period, Shares, Acquisitions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesAcquisitions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Shares issued on acquisition (in shares)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesAcquisitions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issuance of common stock upon acquisition of Quellis (in shares)</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_AdjustmentsToAdditionalPaidInCapitalCommonStockIssuedInPublicOffering" xlink:label="catb_AdjustmentsToAdditionalPaidInCapitalCommonStockIssuedInPublicOffering" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_AdjustmentsToAdditionalPaidInCapitalCommonStockIssuedInPublicOffering_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of increase in additional paid in capital (APIC) resulting from the issuance of common stock in a public offering.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_AdjustmentsToAdditionalPaidInCapitalCommonStockIssuedInPublicOffering_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adjustments to Additional Paid-In Capital, Common Stock Issued In Public Offering</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_AdjustmentsToAdditionalPaidInCapitalCommonStockIssuedInPublicOffering_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issuance of common stock in a public offering, net of issuance costs</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock Issued During Period, Value, Conversion of Convertible Securities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issuance of common stock upon the conversion of preferred stock</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities" xlink:label="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock Issued During Period, Shares, Conversion of Convertible Securities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issuance of common stock upon the conversion of preferred stock (in shares)</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_IncreaseDecreaseInEquityDueToDividendsOnConvertiblePreferredStockBeneficialConversionFeature" xlink:label="catb_IncreaseDecreaseInEquityDueToDividendsOnConvertiblePreferredStockBeneficialConversionFeature" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_IncreaseDecreaseInEquityDueToDividendsOnConvertiblePreferredStockBeneficialConversionFeature" xlink:to="catb_IncreaseDecreaseInEquityDueToDividendsOnConvertiblePreferredStockBeneficialConversionFeature_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_IncreaseDecreaseInEquityDueToDividendsOnConvertiblePreferredStockBeneficialConversionFeature_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The increase (decrease) in equity due to dividends on convertible preferred stock related to a beneficial conversion feature.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_IncreaseDecreaseInEquityDueToDividendsOnConvertiblePreferredStockBeneficialConversionFeature_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) in Equity Due to Dividends on Convertible Preferred Stock, Beneficial Conversion Feature</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_IncreaseDecreaseInEquityDueToDividendsOnConvertiblePreferredStockBeneficialConversionFeature_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Dividend on convertible preferred stock related to beneficial conversion feature and issuance costs</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued" xlink:to="us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adjustments to Additional Paid in Capital, Warrant Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expense related to warrants inherited in acquisition of Quellis</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_ReclassificationOfWarrantLiabilityUponConversionOfWarrants" xlink:label="catb_ReclassificationOfWarrantLiabilityUponConversionOfWarrants" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_ReclassificationOfWarrantLiabilityUponConversionOfWarrants" xlink:to="catb_ReclassificationOfWarrantLiabilityUponConversionOfWarrants_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_ReclassificationOfWarrantLiabilityUponConversionOfWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of warrant liability reclassified to equity upon conversion of warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_ReclassificationOfWarrantLiabilityUponConversionOfWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reclassification of Warrant Liability Upon Conversion of Warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_ReclassificationOfWarrantLiabilityUponConversionOfWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reclassification of warrant liability to additional paid-in capital</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_StockIssuedDuringPeriodValueNewIssuesAtMarketOfferings" xlink:label="catb_StockIssuedDuringPeriodValueNewIssuesAtMarketOfferings" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_StockIssuedDuringPeriodValueNewIssuesAtMarketOfferings" xlink:to="catb_StockIssuedDuringPeriodValueNewIssuesAtMarketOfferings_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_StockIssuedDuringPeriodValueNewIssuesAtMarketOfferings_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Equity impact of the value of new stock issued in At-the-Market offerings during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_StockIssuedDuringPeriodValueNewIssuesAtMarketOfferings_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock Issued During Period, Value, New Issues, At the Market Offerings</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_StockIssuedDuringPeriodValueNewIssuesAtMarketOfferings_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issuance of common stock for at-the-market offerings</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_StockIssuedDuringPeriodSharesNewIssuesAtMarketOfferings" xlink:label="catb_StockIssuedDuringPeriodSharesNewIssuesAtMarketOfferings" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_StockIssuedDuringPeriodSharesNewIssuesAtMarketOfferings" xlink:to="catb_StockIssuedDuringPeriodSharesNewIssuesAtMarketOfferings_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_StockIssuedDuringPeriodSharesNewIssuesAtMarketOfferings_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of new stock issued in At-the-Market offerings during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_StockIssuedDuringPeriodSharesNewIssuesAtMarketOfferings_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock Issued During Period, Shares, New Issues, At the Market Offerings</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_StockIssuedDuringPeriodSharesNewIssuesAtMarketOfferings_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issuance of common stock for at-the-market offerings (in shares)</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_IssuanceOfCommonStockAndWarrantsInPublicOfferingsValueNetOfIssuanceCosts" xlink:label="catb_IssuanceOfCommonStockAndWarrantsInPublicOfferingsValueNetOfIssuanceCosts" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_IssuanceOfCommonStockAndWarrantsInPublicOfferingsValueNetOfIssuanceCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Value of stock issued as a result of the issuance of common stock and warrants in Public Offerings and net Of issuance costs.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_IssuanceOfCommonStockAndWarrantsInPublicOfferingsValueNetOfIssuanceCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issuance Of Common Stock And Warrants In Public Offerings Value Net Of Issuance Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_IssuanceOfCommonStockAndWarrantsInPublicOfferingsValueNetOfIssuanceCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issuance of common stock and warrants in public offerings</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_IssuanceOfCommonStockAndWarrantsInPublicOfferingsShares" xlink:label="catb_IssuanceOfCommonStockAndWarrantsInPublicOfferingsShares" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_IssuanceOfCommonStockAndWarrantsInPublicOfferingsShares" xlink:to="catb_IssuanceOfCommonStockAndWarrantsInPublicOfferingsShares_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_IssuanceOfCommonStockAndWarrantsInPublicOfferingsShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The number of common stock shares and warrants issued in public offerings.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_IssuanceOfCommonStockAndWarrantsInPublicOfferingsShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issuance of Common Stock and Warrants in Public Offerings, Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_IssuanceOfCommonStockAndWarrantsInPublicOfferingsShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issuance of common stock and warrants in public offerings (in shares)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock-based compensation expense</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="us-gaap_StatementOfCashFlowsAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfCashFlowsAbstract" xlink:to="us-gaap_StatementOfCashFlowsAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Condensed Consolidated Statements of Cash Flows</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Operating activities</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProfitLoss" xlink:label="us-gaap_ProfitLoss" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProfitLoss" xlink:to="us-gaap_ProfitLoss_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProfitLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net Income (Loss), Including Portion Attributable to Noncontrolling Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProfitLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net loss</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reconciliation of net loss to net cash used in operating activities:</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_NonCashPortionOfAcquiredResearchAndDevelopment" xlink:label="catb_NonCashPortionOfAcquiredResearchAndDevelopment" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_NonCashPortionOfAcquiredResearchAndDevelopment" xlink:to="catb_NonCashPortionOfAcquiredResearchAndDevelopment_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_NonCashPortionOfAcquiredResearchAndDevelopment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of non-cash portion of acquired IP R&amp;D.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_NonCashPortionOfAcquiredResearchAndDevelopment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-cash Portion of Acquired Research and Development</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_NonCashPortionOfAcquiredResearchAndDevelopment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-cash portion of acquired in-process research and development</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="us-gaap_ShareBasedCompensation" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensation" xlink:to="us-gaap_ShareBasedCompensation_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensation_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-based Compensation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensation_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock-based compensation expense</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_GainLossOnWarrantInherited" xlink:label="catb_GainLossOnWarrantInherited" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherNoncashIncomeExpense" xlink:label="us-gaap_OtherNoncashIncomeExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherNoncashIncomeExpense" xlink:to="us-gaap_OtherNoncashIncomeExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherNoncashIncomeExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other Noncash Income (Expense)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_OtherNoncashIncomeExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other non-cash items</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) in Operating Capital [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Changes in assets and liabilities:</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:label="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:to="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) in Prepaid Expense and Other Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Prepaid expenses and other current assets</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_IncreaseDecreaseInRightOfUseAssetOperating" xlink:label="catb_IncreaseDecreaseInRightOfUseAssetOperating" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_IncreaseDecreaseInRightOfUseAssetOperating" xlink:to="catb_IncreaseDecreaseInRightOfUseAssetOperating_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_IncreaseDecreaseInRightOfUseAssetOperating_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The increase (decrease) during the reporting period in the aggregate amount of right-of-use-asset-operating.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_IncreaseDecreaseInRightOfUseAssetOperating_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase Decrease In Right Of Use Asset Operating</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_IncreaseDecreaseInRightOfUseAssetOperating_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Right-of-use asset-operating</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccountsPayable" xlink:to="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) in Accounts Payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accounts payable</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:to="us-gaap_IncreaseDecreaseInAccruedLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) in Accrued Liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accrued expenses</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net Cash Provided by (Used in) Operating Activities, Continuing Operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net cash used in operating activities</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Investing activities</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsToAcquireShortTermInvestments" xlink:label="us-gaap_PaymentsToAcquireShortTermInvestments" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquireShortTermInvestments" xlink:to="us-gaap_PaymentsToAcquireShortTermInvestments_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToAcquireShortTermInvestments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Payments to Acquire Short-term Investments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsToAcquireShortTermInvestments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Purchases of short-term investments</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments" xlink:label="us-gaap_ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments" xlink:to="us-gaap_ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds from Sale, Maturity and Collection of Short-term Investments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sales and maturities of short-term investments</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashAcquiredFromAcquisition" xlink:label="us-gaap_CashAcquiredFromAcquisition" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAcquiredFromAcquisition" xlink:to="us-gaap_CashAcquiredFromAcquisition_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAcquiredFromAcquisition_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash Acquired from Acquisition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CashAcquiredFromAcquisition_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash acquired in acquisition of Quellis</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:to="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Payments to Acquire Property, Plant, and Equipment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Purchases of property and equipment</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net Cash Provided by (Used in) Investing Activities, Continuing Operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net cash provided by (used in) investing activities</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financing activities</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromIssuanceInitialPublicOffering" xlink:label="us-gaap_ProceedsFromIssuanceInitialPublicOffering" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceInitialPublicOffering" xlink:to="us-gaap_ProceedsFromIssuanceInitialPublicOffering_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromIssuanceInitialPublicOffering_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds from Issuance Initial Public Offering</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ProceedsFromIssuanceInitialPublicOffering_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds from public offerings, net of issuance costs</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromIssuanceOfPrivatePlacement" xlink:label="us-gaap_ProceedsFromIssuanceOfPrivatePlacement" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfPrivatePlacement" xlink:to="us-gaap_ProceedsFromIssuanceOfPrivatePlacement_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromIssuanceOfPrivatePlacement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds from Issuance of Private Placement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromIssuanceOfPrivatePlacement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net proceeds from issuance of private placement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ProceedsFromIssuanceOfPrivatePlacement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds from private offering of public equity, net of issuance costs</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_ProceedsFromIssuanceOfAtMarketOffering" xlink:label="catb_ProceedsFromIssuanceOfAtMarketOffering" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_ProceedsFromIssuanceOfAtMarketOffering" xlink:to="catb_ProceedsFromIssuanceOfAtMarketOffering_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_ProceedsFromIssuanceOfAtMarketOffering_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The cash inflow associated with the amount received from entity's At-the-market offering of stock to the public.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_ProceedsFromIssuanceOfAtMarketOffering_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds from Issuance of At the Market Offering</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_ProceedsFromIssuanceOfAtMarketOffering_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds from at-the-market offering, net of issuance costs</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net Cash Provided by (Used in) Financing Activities, Continuing Operations</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SupplementalCashFlowInformationAbstract" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SupplementalCashFlowInformationAbstract" xlink:to="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Supplemental Cash Flow Information [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Supplemental disclosure of cash flow information</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConversionOfStockAmountConverted1" xlink:label="us-gaap_ConversionOfStockAmountConverted1" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConversionOfStockAmountConverted1" xlink:to="us-gaap_ConversionOfStockAmountConverted1_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ConversionOfStockAmountConverted1_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Conversion of Stock, Amount Converted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ConversionOfStockAmountConverted1_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Conversion of Series X Preferred Stock into common stock</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_ReclassificationOfEquityClassifiedWarrants" xlink:label="catb_ReclassificationOfEquityClassifiedWarrants" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_ReclassificationOfEquityClassifiedWarrants" xlink:to="catb_ReclassificationOfEquityClassifiedWarrants_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_ReclassificationOfEquityClassifiedWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of increase (decrease) in additional paid in capital (APIC) resulting from reclassification of equity classified warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_ReclassificationOfEquityClassifiedWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reclassification Of Equity Classified Warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="catb_ReclassificationOfEquityClassifiedWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reclassification of warrant liability to additional paid-in capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="catb_ReclassificationOfEquityClassifiedWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reclassification of warrant liability to additional paid-in capital</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Organization and Operations</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NatureOfOperations" xlink:label="us-gaap_NatureOfOperations" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NatureOfOperations" xlink:to="us-gaap_NatureOfOperations_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NatureOfOperations_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Organization and Operations</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:label="us-gaap_AccountingPoliciesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_AccountingPoliciesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountingPoliciesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Summary of Significant Accounting Policies</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SignificantAccountingPoliciesTextBlock" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SignificantAccountingPoliciesTextBlock" xlink:to="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Significant Accounting Policies [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Summary of Significant Accounting Policies</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="us-gaap_BusinessCombinationsAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessCombinationsAbstract" xlink:to="us-gaap_BusinessCombinationsAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessCombinationsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Acquisition of Quellis</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationDisclosureTextBlock" xlink:label="us-gaap_BusinessCombinationDisclosureTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessCombinationDisclosureTextBlock" xlink:to="us-gaap_BusinessCombinationDisclosureTextBlock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessCombinationDisclosureTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Business Combination Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BusinessCombinationDisclosureTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Acquisition of Quellis</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueDisclosuresAbstract" xlink:label="us-gaap_FairValueDisclosuresAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueDisclosuresAbstract" xlink:to="us-gaap_FairValueDisclosuresAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueDisclosuresAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial Instruments</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueDisclosuresTextBlock" xlink:label="us-gaap_FairValueDisclosuresTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueDisclosuresTextBlock" xlink:to="us-gaap_FairValueDisclosuresTextBlock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueDisclosuresTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial Instruments</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermInvestmentsAbstract" xlink:label="us-gaap_ShortTermInvestmentsAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShortTermInvestmentsAbstract" xlink:to="us-gaap_ShortTermInvestmentsAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShortTermInvestmentsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Short-Term Investments</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_ShortTermInvestmentsTextBlock" xlink:label="catb_ShortTermInvestmentsTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_ShortTermInvestmentsTextBlock" xlink:to="catb_ShortTermInvestmentsTextBlock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_ShortTermInvestmentsTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The entire disclosure of the short-term investments. Short-term investments may include current marketable securities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_ShortTermInvestmentsTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Short-term Investments [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_ShortTermInvestmentsTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Short-Term Investments</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccruedLiabilitiesAndOtherLiabilitiesAbstract" xlink:label="us-gaap_AccruedLiabilitiesAndOtherLiabilitiesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedLiabilitiesAndOtherLiabilitiesAbstract" xlink:to="us-gaap_AccruedLiabilitiesAndOtherLiabilitiesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccruedLiabilitiesAndOtherLiabilitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accrued Expenses</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accrued Expenses</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquityNoteAbstract" xlink:label="us-gaap_StockholdersEquityNoteAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockTextBlock" xlink:label="us-gaap_PreferredStockTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockTextBlock" xlink:to="us-gaap_PreferredStockTextBlock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Preferred Stock [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_PreferredStockTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stockholders' Equity</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_CommonStockReservedForFutureIssuanceAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_CommonStockReservedForFutureIssuanceAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reserved for Future Issuance</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_CommonStockReservedForFutureIssuanceTextBlock" xlink:label="catb_CommonStockReservedForFutureIssuanceTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net Loss Per Share</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy" xlink:label="us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy" xlink:to="us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash, Cash Equivalents and Restricted Cash</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InProcessResearchAndDevelopmentPolicy" xlink:label="us-gaap_InProcessResearchAndDevelopmentPolicy" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InProcessResearchAndDevelopmentPolicy" xlink:to="us-gaap_InProcessResearchAndDevelopmentPolicy_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InProcessResearchAndDevelopmentPolicy_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">In Process Research and Development, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InProcessResearchAndDevelopmentPolicy_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Acquired In-Process Research and Development</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_PreferredStockDiscountPolicyTextBlock" xlink:to="catb_PreferredStockDiscountPolicyTextBlock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_PreferredStockDiscountPolicyTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of accounting policy for preferred stock discount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_PreferredStockDiscountPolicyTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Preferred Stock Discount Policy Text Block</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Recent Accounting Pronouncements - Not Yet Adopted</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_SummaryOfSignificantAccountingPoliciesPoliciesTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of accounting policies unchanged from prior annual filing.</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="catb_SummaryOfSignificantAccountingPoliciesPoliciesTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Summary of Significant Accounting Policies</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_ScheduleOfPreferredStockOrWarrantsToPurchasePreferredStockTableTextBlock" xlink:label="catb_ScheduleOfPreferredStockOrWarrantsToPurchasePreferredStockTableTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_ScheduleOfPreferredStockOrWarrantsToPurchasePreferredStockTableTextBlock" xlink:to="catb_ScheduleOfPreferredStockOrWarrantsToPurchasePreferredStockTableTextBlock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_ScheduleOfPreferredStockOrWarrantsToPurchasePreferredStockTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The tabular disclosure preferred stock or warrants to purchase preferred stock.</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock" xlink:label="us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTextBlock" xlink:label="us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Restrictions on Cash and Cash Equivalents [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of reconciliation of cash, cash equivalents and restricted cash</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xlink:label="us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of net assets acquired</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" xlink:label="us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of assets and liabilities measured fair value on recurring basis</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MarketableSecuritiesTextBlock" xlink:label="us-gaap_MarketableSecuritiesTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MarketableSecuritiesTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Marketable Securities [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MarketableSecuritiesTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of short term investments</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock" xlink:label="us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock" xlink:to="us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of Accrued Liabilities [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of accrued expenses</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock" xlink:label="us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock" xlink:to="us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Summary of Series X preferred stock or warrants to purchase</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfStockByClassTextBlock" xlink:label="us-gaap_ScheduleOfStockByClassTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfStockByClassTextBlock" xlink:to="us-gaap_ScheduleOfStockByClassTextBlock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfStockByClassTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of Stock by Class [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfStockByClassTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of common stock reserved for future issuance</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xlink:label="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xlink:to="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-based Payment Arrangement, Option, Activity [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Summary of stock option activity</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfStockByClassTable" xlink:label="us-gaap_ScheduleOfStockByClassTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfStockByClassTable" xlink:to="us-gaap_ScheduleOfStockByClassTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfStockByClassTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of Stock by Class [Table]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfStockLineItems" xlink:label="us-gaap_ClassOfStockLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfStockLineItems" xlink:to="us-gaap_ClassOfStockLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfStockLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Class of Stock [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ClassOfStockLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Common Stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ClassOfStockLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stockholders' Equity</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_AgreementAndPlanOfMergerAbstract" xlink:label="catb_AgreementAndPlanOfMergerAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_AgreementAndPlanOfMergerAbstract" xlink:to="catb_AgreementAndPlanOfMergerAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_AgreementAndPlanOfMergerAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_AgreementAndPlanOfMergerAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Agreement and Plan of Merger [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_AgreementAndPlanOfMergerAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Agreement and Plan of Merger</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_TemporaryEquityConversionValue" xlink:label="catb_TemporaryEquityConversionValue" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_TemporaryEquityConversionValue" xlink:to="catb_TemporaryEquityConversionValue_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_TemporaryEquityConversionValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The conversion value of temporary equity shares on the merger closing date.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_TemporaryEquityConversionValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Temporary Equity, Conversion Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_TemporaryEquityConversionValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Conversion value on closing date</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionGross" xlink:label="catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionGross" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionGross" xlink:to="catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionGross_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionGross_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Gross number of share options (or share units) assumed in acquisition during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionGross_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-based Compensation Arrangement by Share-based Payment Award, Options, Assumed in Acquisition, Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionGross_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of options assumed in Quellis Acquisition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionGross_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Assumed in Quellis Acquisition (in shares)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" xlink:to="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Class of Warrant or Right, Number of Securities Called by Warrants or Rights</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants to purchase number of shares</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xlink:to="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Class of Warrant or Right, Exercise Price of Warrants or Rights</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Exercise Price (in dollars per share)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Exercise price of warrants (in dollars per share)</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_StockPurchaseAgreementAndSeriesXPreferredStockAbstract" xlink:label="catb_StockPurchaseAgreementAndSeriesXPreferredStockAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_StockPurchaseAgreementAndSeriesXPreferredStockAbstract" xlink:to="catb_StockPurchaseAgreementAndSeriesXPreferredStockAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_StockPurchaseAgreementAndSeriesXPreferredStockAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_StockPurchaseAgreementAndSeriesXPreferredStockAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock Purchase Agreement and Series X Preferred Stock [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_StockPurchaseAgreementAndSeriesXPreferredStockAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock Purchase Agreement and Series X Preferred Stock</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodGrossValue" xlink:label="catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodGrossValue" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodGrossValue" xlink:to="catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodGrossValue_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodGrossValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Gross value of new stock classified as temporary equity issued in a private offering during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodGrossValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Temporary Equity, Stock Issued In Private Offering During Period, Gross Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodGrossValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Gross proceeds from issuance of preferred stock in a private offering</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsOfStockIssuanceCosts" xlink:label="us-gaap_PaymentsOfStockIssuanceCosts" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsOfStockIssuanceCosts" xlink:to="us-gaap_PaymentsOfStockIssuanceCosts_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsOfStockIssuanceCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Payments of Stock Issuance Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PaymentsOfStockIssuanceCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issuance costs</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TemporaryEquitySharesOutstanding" xlink:label="us-gaap_TemporaryEquitySharesOutstanding" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TemporaryEquitySharesOutstanding" xlink:to="us-gaap_TemporaryEquitySharesOutstanding_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TemporaryEquitySharesOutstanding_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Temporary Equity, Shares Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TemporaryEquitySharesOutstanding_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Series X Preferred Stock at Transaction Date</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_PreferredStockConvertibleSharesIssuable" xlink:label="catb_PreferredStockConvertibleSharesIssuable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_PreferredStockConvertibleSharesIssuable" xlink:to="catb_PreferredStockConvertibleSharesIssuable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_PreferredStockConvertibleSharesIssuable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of common shares issuable upon conversion of preferred stock.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_PreferredStockConvertibleSharesIssuable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Preferred Stock, Convertible, Shares Issuable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_PreferredStockConvertibleSharesIssuable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Common Stock Issuable Upon Conversion at Transaction Date</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_TemporaryEquityConversionBasis" xlink:label="catb_TemporaryEquityConversionBasis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_TemporaryEquityConversionBasis" xlink:to="catb_TemporaryEquityConversionBasis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_TemporaryEquityConversionBasis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The number of shares of common stock into which each share of Series X Preferred Stock may be converted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_TemporaryEquityConversionBasis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Temporary Equity, Conversion Basis</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_TemporaryEquityConversionBasis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares of common stock into which each share of Series X Preferred Stock may be converted</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_PercentageOfOwnershipOnCommonStockIssuedAndOutstandingImmediatelyAfterConversionInitially" xlink:label="catb_PercentageOfOwnershipOnCommonStockIssuedAndOutstandingImmediatelyAfterConversionInitially" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_PercentageOfOwnershipOnCommonStockIssuedAndOutstandingImmediatelyAfterConversionInitially" xlink:to="catb_PercentageOfOwnershipOnCommonStockIssuedAndOutstandingImmediatelyAfterConversionInitially_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_PercentageOfOwnershipOnCommonStockIssuedAndOutstandingImmediatelyAfterConversionInitially_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of beneficial ownership common stock issued and outstanding immediately after giving effect to such conversion initially considered for prohibiting from converting shares of Series X Preferred Stock into shares of the Company's common stock.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_PercentageOfOwnershipOnCommonStockIssuedAndOutstandingImmediatelyAfterConversionInitially_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of Ownership on Common Stock Issued and Outstanding Immediately After Conversion, Initially</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_PercentageOfOwnershipOnCommonStockIssuedAndOutstandingImmediatelyAfterConversionThereafter_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of beneficial ownership common stock issued and outstanding immediately after giving effect to such conversion thereafter considered for prohibiting from converting shares of Series X Preferred Stock into shares of the Company's common stock.</label>
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    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_January2020FinancingAbstract" xlink:label="catb_January2020FinancingAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares issued</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharesIssuedPricePerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Shares Issued, Price Per Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SharesIssuedPricePerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share price (in dollars per share)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SaleOfStockConsiderationReceivedOnTransaction" xlink:label="us-gaap_SaleOfStockConsiderationReceivedOnTransaction" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SaleOfStockConsiderationReceivedOnTransaction" xlink:to="us-gaap_SaleOfStockConsiderationReceivedOnTransaction_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SaleOfStockConsiderationReceivedOnTransaction_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sale of Stock, Consideration Received on Transaction</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SaleOfStockConsiderationReceivedOnTransaction_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Gross proceeds from sale of stock in public offering</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:to="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds from Issuance of Common Stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds from public offering, net of issuance costs</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_CommonStockSaleAgreementValue" xlink:label="catb_CommonStockSaleAgreementValue" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_CommonStockSaleAgreementValue" xlink:to="catb_CommonStockSaleAgreementValue_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_CommonStockSaleAgreementValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The aggregate value of common stock authorized to be issued under the terms of an open market sale agreement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_CommonStockSaleAgreementValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Common Stock, Sale Agreement, Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_CommonStockSaleAgreementValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maximum aggregate value of common shares which can be issued under the agreement</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_PercentageOfCommissionPaidToUnderwriterBasedOnProceedsFromOffering" xlink:label="catb_PercentageOfCommissionPaidToUnderwriterBasedOnProceedsFromOffering" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_PercentageOfCommissionPaidToUnderwriterBasedOnProceedsFromOffering" xlink:to="catb_PercentageOfCommissionPaidToUnderwriterBasedOnProceedsFromOffering_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_PercentageOfCommissionPaidToUnderwriterBasedOnProceedsFromOffering_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of commission paid to underwriters based on proceeds from offering.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_PercentageOfCommissionPaidToUnderwriterBasedOnProceedsFromOffering_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of Commission Paid to Underwriter based on Proceeds from Offering</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_PercentageOfCommissionPaidToUnderwriterBasedOnProceedsFromOffering_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of commission paid to underwriter based on proceeds from common stock</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_RemainingAvailableUnderCurrentSalesAgreement" xlink:label="catb_RemainingAvailableUnderCurrentSalesAgreement" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_RemainingAvailableUnderCurrentSalesAgreement" xlink:to="catb_RemainingAvailableUnderCurrentSalesAgreement_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_RemainingAvailableUnderCurrentSalesAgreement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of remaining available under its current sales agreement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_RemainingAvailableUnderCurrentSalesAgreement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Remaining Available Under Current Sales Agreement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_RemainingAvailableUnderCurrentSalesAgreement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Remaining available under sales agreement</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xlink:label="us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xlink:to="us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:to="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Antidilutive Common Stock Equivalents Excluded from Computation of Diluted Net Loss Per Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Antidilutive common stock equivalents excluded from computation of diluted net loss per share</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:to="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Anti-dilutive securities excluded from the calculation of diluted net loss per share (in shares)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable" xlink:label="us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable" xlink:to="us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Restrictions on Cash and Cash Equivalents [Table]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Restricted Cash and Cash Equivalents Items [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash and Cash Equivalents and Restricted Cash</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalents" xlink:label="us-gaap_RestrictedCashAndCashEquivalents" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestrictedCashAndCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Restricted Cash And Cash Equivalents</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_RestrictedCashAndCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Restricted cash</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_NonCashReturnRelatedToCommonStock" xlink:label="catb_NonCashReturnRelatedToCommonStock" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_NonCashReturnRelatedToCommonStock" xlink:to="catb_NonCashReturnRelatedToCommonStock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_NonCashReturnRelatedToCommonStock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of Non Cash Return Related To Common Stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_NonCashReturnRelatedToCommonStock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non Cash Return Related To Common Stock</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of Business Acquisitions, by Acquisition [Table]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="us-gaap_BusinessAcquisitionLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessAcquisitionLineItems" xlink:to="us-gaap_BusinessAcquisitionLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessAcquisitionLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Business Acquisition [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BusinessAcquisitionLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Acquisition of Quellis</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherThanIntangibleAssetsAndDeferredTaxLiabilities" xlink:label="catb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherThanIntangibleAssetsAndDeferredTaxLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issuance of warrants</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">(Decrease) increase in the fair value of the warrants</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_ShortTermInvestmentsAtAmortizedCost_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Short Term Investments At Amortized Cost</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_ShortTermSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions" xlink:to="catb_ShortTermSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_ShortTermSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of Short term investment positions in a continuous unrealized loss position for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_ShortTermSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Short Term, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrent" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Employee Related Liabilities Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accrued compensation</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_AccruedContractedResearchCostsCurrent" xlink:label="catb_AccruedContractedResearchCostsCurrent" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_AccruedContractedResearchCostsCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Carrying value as of the balance sheet date of obligations incurred through that date for contracted research costs. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_AccruedContractedResearchCostsCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accrued Contracted Research Costs, Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_AccruedContractedResearchCostsCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accrued contracted research costs</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccruedProfessionalFeesCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accrued Professional Fees Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccruedProfessionalFeesCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accrued professional fees</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherAccruedLiabilitiesCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other Accrued Liabilities, Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherAccruedLiabilitiesCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accrued other</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_AccruedSeveranceCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accrued Severance, Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_AccruedSeveranceCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accrued severance</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockNumberOfSharesParValueAndOtherDisclosuresAbstract" xlink:label="us-gaap_PreferredStockNumberOfSharesParValueAndOtherDisclosuresAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ClassOfWarrantOrRightLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Common Stock Warrants</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfWarrantOrRightOutstanding" xlink:label="us-gaap_ClassOfWarrantOrRightOutstanding" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightOutstanding" xlink:to="us-gaap_ClassOfWarrantOrRightOutstanding_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRightOutstanding_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Class of Warrant or Right, Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ClassOfWarrantOrRightOutstanding_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants Outstanding (in shares)</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_WarrantsAndRightsOutstandingWeightedAverageRemainingContractualTerm" xlink:label="catb_WarrantsAndRightsOutstandingWeightedAverageRemainingContractualTerm" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_WarrantsAndRightsOutstandingWeightedAverageRemainingContractualTerm" xlink:to="catb_WarrantsAndRightsOutstandingWeightedAverageRemainingContractualTerm_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_WarrantsAndRightsOutstandingWeightedAverageRemainingContractualTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Weighted average remaining contractual life of warrant, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_WarrantsAndRightsOutstandingWeightedAverageRemainingContractualTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants And Rights Outstanding Weighted Average Remaining Contractual Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="catb_WarrantsAndRightsOutstandingWeightedAverageRemainingContractualTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Weighted average life (in years)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" xlink:to="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Common Stock, Capital Shares Reserved for Future Issuance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares reserved for future issuance</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-based Compensation Arrangement by Share-based Payment Award [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock Incentive Plans</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Shares</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Outstanding, end of period (in shares)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Outstanding, beginning of period (in shares)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Granted (in shares)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cancelled or forfeited (in shares)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expired (in shares)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Vested and exercisable (in shares)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Weighted-Average Exercise Price</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Outstanding at end of year (in dollars per share)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Outstanding, beginning of period (in dollars per share)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Granted (in dollars per share)</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionWeightedAverageExercisePrice" xlink:label="catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionWeightedAverageExercisePrice" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionWeightedAverageExercisePrice" xlink:to="catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionWeightedAverageExercisePrice_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionWeightedAverageExercisePrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Weighted average exercise per share of share options assumed in acquisition during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionWeightedAverageExercisePrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-based Compensation Arrangement by Share-based Payment Award, Options, Assumed in Acquisition, Weighted Average Exercise Price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionWeightedAverageExercisePrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Assumed in Quellis Acquisition (in dollars per share)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cancelled or forfeited (in dollars per share)</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementClassOfStockAxis" xlink:to="us-gaap_StatementClassOfStockAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementClassOfStockAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Class of Stock [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="us-gaap_ClassOfStockDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfStockDomain" xlink:to="us-gaap_ClassOfStockDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfStockDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Class Of Stock [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ClassOfStockDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Class of Stock [Domain]</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_SeriesXRedeemableConvertiblePreferredStockMember" xlink:label="catb_SeriesXRedeemableConvertiblePreferredStockMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_SeriesXRedeemableConvertiblePreferredStockMember" xlink:to="catb_SeriesXRedeemableConvertiblePreferredStockMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_SeriesXRedeemableConvertiblePreferredStockMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Outstanding redeemable convertible Series X preferred stock.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_SeriesXRedeemableConvertiblePreferredStockMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Series X Redeemable Convertible Preferred Stock [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_SeriesXRedeemableConvertiblePreferredStockMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Series X redeemable convertible preferred stock</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="us-gaap_StatementEquityComponentsAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementEquityComponentsAxis" xlink:to="us-gaap_StatementEquityComponentsAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Equity Components [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="us-gaap_EquityComponentDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_EquityComponentDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EquityComponentDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Equity Component [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EquityComponentDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Equity Component [Domain]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockMember" xlink:label="us-gaap_PreferredStockMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockMember" xlink:to="us-gaap_PreferredStockMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Preferred Stock [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Preferred Stock</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockMember" xlink:label="us-gaap_CommonStockMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockMember" xlink:to="us-gaap_CommonStockMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Common Stock [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Common Stock</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="us-gaap_AdditionalPaidInCapitalMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdditionalPaidInCapitalMember" xlink:to="us-gaap_AdditionalPaidInCapitalMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Additional Paid In Capital [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Additional paid-in capital</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:label="us-gaap_RetainedEarningsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetainedEarningsMember" xlink:to="us-gaap_RetainedEarningsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RetainedEarningsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Retained Earnings [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RetainedEarningsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accumulated Deficit</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accumulated Other Comprehensive Income [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accumulated other comprehensive loss</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="us-gaap_BusinessAcquisitionAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessAcquisitionAxis" xlink:to="us-gaap_BusinessAcquisitionAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessAcquisitionAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Business Acquisition [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Business Acquisition Acquiree [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Business Acquisition, Acquiree [Domain]</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember" xlink:label="catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember" xlink:to="catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to acquisition of Quellis Biosciences, Inc, pursuant to agreement and plan of merger.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Agreement And Plan Of Merger Quellis Biosciences Inc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Quellis Biosciences, Inc</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_SharesIssuedInMergerMember" xlink:label="catb_SharesIssuedInMergerMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_SharesIssuedInMergerMember" xlink:to="catb_SharesIssuedInMergerMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_SharesIssuedInMergerMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to shares issued in merger.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_SharesIssuedInMergerMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Shares Issued In Merger [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_SharesIssuedInMergerMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Outstanding shares issued in merger</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_SharesIssuedIn2021FinancingMember" xlink:label="catb_SharesIssuedIn2021FinancingMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_SharesIssuedIn2021FinancingMember" xlink:to="catb_SharesIssuedIn2021FinancingMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_SharesIssuedIn2021FinancingMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to shares issued in 2020 financing.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_SharesIssuedIn2021FinancingMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Shares Issued In2021 Financing [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_SharesIssuedIn2021FinancingMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Outstanding shares issued in February 2021 Financing</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_WarrantsAssumedInMergerMember" xlink:label="catb_WarrantsAssumedInMergerMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_WarrantsAssumedInMergerMember" xlink:to="catb_WarrantsAssumedInMergerMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_WarrantsAssumedInMergerMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to warrants assumed in merger.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_WarrantsAssumedInMergerMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants Assumed In Merger [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_WarrantsAssumedInMergerMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants assumed in merger</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsidiarySaleOfStockAxis" xlink:label="us-gaap_SubsidiarySaleOfStockAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsidiarySaleOfStockAxis" xlink:to="us-gaap_SubsidiarySaleOfStockAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsidiarySaleOfStockAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sale of Stock [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SaleOfStockNameOfTransactionDomain" xlink:label="us-gaap_SaleOfStockNameOfTransactionDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SaleOfStockNameOfTransactionDomain" xlink:to="us-gaap_SaleOfStockNameOfTransactionDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SaleOfStockNameOfTransactionDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sale Of Stock Name Of Transaction [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SaleOfStockNameOfTransactionDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sale of Stock [Domain]</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_StockPurchaseAgreementInstitutionalAndAccreditedInvestorsMember" xlink:label="catb_StockPurchaseAgreementInstitutionalAndAccreditedInvestorsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_StockPurchaseAgreementInstitutionalAndAccreditedInvestorsMember" xlink:to="catb_StockPurchaseAgreementInstitutionalAndAccreditedInvestorsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_StockPurchaseAgreementInstitutionalAndAccreditedInvestorsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to stock purchase agreement with institutional and accredited investors.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_StockPurchaseAgreementInstitutionalAndAccreditedInvestorsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock Purchase Agreement Institutional And Accredited Investors [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_StockPurchaseAgreementInstitutionalAndAccreditedInvestorsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock Purchase Agreement</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis" xlink:label="srt_RangeAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RangeAxis" xlink:to="srt_RangeAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_RangeAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Range [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember" xlink:label="srt_RangeMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RangeMember" xlink:to="srt_RangeMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_RangeMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Range [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="srt_RangeMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Range [Domain]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MinimumMember" xlink:label="srt_MinimumMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_MinimumMember" xlink:to="srt_MinimumMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_MinimumMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Minimum [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="srt_MinimumMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Minimum</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember" xlink:label="srt_MaximumMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_MaximumMember" xlink:to="srt_MaximumMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_MaximumMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maximum [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="srt_MaximumMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maximum</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_UnderwritingPublicOffering2020Member" xlink:label="catb_UnderwritingPublicOffering2020Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_UnderwritingPublicOffering2020Member" xlink:to="catb_UnderwritingPublicOffering2020Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_UnderwritingPublicOffering2020Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents sale of stock by a underwritten public offering.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_UnderwritingPublicOffering2020Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Underwriting Public Offering2020 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_UnderwritingPublicOffering2020Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">January 2020 Financing</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CounterpartyNameAxis" xlink:label="srt_CounterpartyNameAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_CounterpartyNameAxis" xlink:to="srt_CounterpartyNameAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_CounterpartyNameAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Counterparty Name [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="srt_RepurchaseAgreementCounterpartyNameDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RepurchaseAgreementCounterpartyNameDomain" xlink:to="srt_RepurchaseAgreementCounterpartyNameDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_RepurchaseAgreementCounterpartyNameDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Repurchase Agreement Counterparty Name [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="srt_RepurchaseAgreementCounterpartyNameDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Counterparty Name [Domain]</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_OppenheimerCo.IncMember" xlink:label="catb_OppenheimerCo.IncMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_OppenheimerCo.IncMember" xlink:to="catb_OppenheimerCo.IncMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_OppenheimerCo.IncMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to Oppenheimer &amp; Co. Inc.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_OppenheimerCo.IncMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Oppenheimer Co. Inc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_OppenheimerCo.IncMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Oppenheimer &amp; Co. Inc</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_CowenAndCompanyLLCMember" xlink:label="catb_CowenAndCompanyLLCMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_CowenAndCompanyLLCMember" xlink:to="catb_CowenAndCompanyLLCMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_CowenAndCompanyLLCMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to Cowen and Company LLC ("Cowen").</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_CowenAndCompanyLLCMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cowen And Company L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_CowenAndCompanyLLCMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cowen</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_JefferiesMember" xlink:label="catb_JefferiesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_JefferiesMember" xlink:to="catb_JefferiesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_JefferiesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to Jefferies.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_JefferiesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Jefferies [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_JefferiesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Jefferies</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_AtMarketOfferingMember" xlink:label="catb_AtMarketOfferingMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_AtMarketOfferingMember" xlink:to="catb_AtMarketOfferingMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_AtMarketOfferingMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to At-the-Market Offering.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_AtMarketOfferingMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">At Market Offering [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_AtMarketOfferingMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">ATM</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:to="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Antidilutive Securities [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain" xlink:label="us-gaap_AntidilutiveSecuritiesNameDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AntidilutiveSecuritiesNameDomain" xlink:to="us-gaap_AntidilutiveSecuritiesNameDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AntidilutiveSecuritiesNameDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Antidilutive Securities Name [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AntidilutiveSecuritiesNameDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Antidilutive Securities, Name [Domain]</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_SeriesXPreferredStockMember" xlink:label="catb_SeriesXPreferredStockMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_SeriesXPreferredStockMember" xlink:to="catb_SeriesXPreferredStockMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_SeriesXPreferredStockMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to series X preferred stock.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_SeriesXPreferredStockMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Series X Preferred Stock [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_SeriesXPreferredStockMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Series X Preferred Stock</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="us-gaap_EmployeeStockOptionMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeStockOptionMember" xlink:to="us-gaap_EmployeeStockOptionMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EmployeeStockOptionMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Employee Stock Option [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EmployeeStockOptionMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock options</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_CommonStockWarrantsMember" xlink:label="catb_CommonStockWarrantsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_CommonStockWarrantsMember" xlink:to="catb_CommonStockWarrantsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_CommonStockWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Security that gives the holder the right to purchase shares of common stock in accordance with the terms of the instrument, usually upon payment of a specified amount.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_CommonStockWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Common Stock Warrants [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_CommonStockWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants for the purchase of common stock</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PrivatePlacementMember" xlink:label="us-gaap_PrivatePlacementMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PrivatePlacementMember" xlink:to="us-gaap_PrivatePlacementMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PrivatePlacementMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Private Placement [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PrivatePlacementMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Private Placement</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:label="us-gaap_FairValueByMeasurementFrequencyAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueByMeasurementFrequencyAxis" xlink:to="us-gaap_FairValueByMeasurementFrequencyAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueByMeasurementFrequencyAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Measurement Frequency [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="us-gaap_FairValueMeasurementFrequencyDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementFrequencyDomain" xlink:to="us-gaap_FairValueMeasurementFrequencyDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueMeasurementFrequencyDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair Value Measurement Frequency [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueMeasurementFrequencyDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair Value, Measurement Frequency [Domain]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsRecurringMember" xlink:label="us-gaap_FairValueMeasurementsRecurringMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementsRecurringMember" xlink:to="us-gaap_FairValueMeasurementsRecurringMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueMeasurementsRecurringMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair Value Measurements Recurring [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueMeasurementsRecurringMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Recurring</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="us-gaap_FinancialInstrumentAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinancialInstrumentAxis" xlink:to="us-gaap_FinancialInstrumentAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FinancialInstrumentAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial Instrument [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:to="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Transfers And Servicing Of Financial Instruments Types Of Financial Instruments [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial Instruments [Domain]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MoneyMarketFundsMember" xlink:label="us-gaap_MoneyMarketFundsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MoneyMarketFundsMember" xlink:to="us-gaap_MoneyMarketFundsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MoneyMarketFundsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Money Market Funds [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MoneyMarketFundsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Money market fund</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_ReverseRepurchaseAgreementsMember" xlink:label="catb_ReverseRepurchaseAgreementsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_ReverseRepurchaseAgreementsMember" xlink:to="catb_ReverseRepurchaseAgreementsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_ReverseRepurchaseAgreementsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Investments represented by an agreement between the entity and another party for the reverse repurchase transactions of identical or substantially the same securities at a date certain for a specified price. Such agreements are generally short-term in nature.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_ReverseRepurchaseAgreementsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reverse Repurchase Agreements [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_ReverseRepurchaseAgreementsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reverse repurchase agreements</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CollateralAxis" xlink:label="us-gaap_CollateralAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CollateralAxis" xlink:to="us-gaap_CollateralAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CollateralAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Collateral Held [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CollateralDomain" xlink:label="us-gaap_CollateralDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CollateralDomain" xlink:to="us-gaap_CollateralDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CollateralDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Collateral [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CollateralDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Collateral Held [Domain]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CollateralPledgedMember" xlink:label="us-gaap_CollateralPledgedMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CollateralPledgedMember" xlink:to="us-gaap_CollateralPledgedMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CollateralPledgedMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Collateral Pledged [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CollateralPledgedMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Government Securities and Obligations</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:to="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair Value, Hierarchy [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:to="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair Value Measurements Fair Value Hierarchy [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair Value Hierarchy [Domain]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="us-gaap_FairValueInputsLevel1Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsLevel1Member" xlink:to="us-gaap_FairValueInputsLevel1Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair Value Inputs Level1 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Level 1</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="us-gaap_FairValueInputsLevel2Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsLevel2Member" xlink:to="us-gaap_FairValueInputsLevel2Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair Value Inputs Level2 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Level 2</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfWarrantOrRightAxis" xlink:label="us-gaap_ClassOfWarrantOrRightAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightAxis" xlink:to="us-gaap_ClassOfWarrantOrRightAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRightAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Class of Warrant or Right [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfWarrantOrRightDomain" xlink:label="us-gaap_ClassOfWarrantOrRightDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightDomain" xlink:to="us-gaap_ClassOfWarrantOrRightDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRightDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Class Of Warrant Or Right [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ClassOfWarrantOrRightDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Class of Warrant or Right [Domain]</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_WarrantsIssuedIn2014Member" xlink:label="catb_WarrantsIssuedIn2014Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_WarrantsIssuedIn2014Member" xlink:to="catb_WarrantsIssuedIn2014Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_WarrantsIssuedIn2014Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents information pertaining to warrants issued in 2014.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_WarrantsIssuedIn2014Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants Issued In2014 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_WarrantsIssuedIn2014Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants Issued in 2014</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_WarrantsIssuedIn2015Member" xlink:label="catb_WarrantsIssuedIn2015Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_WarrantsIssuedIn2015Member" xlink:to="catb_WarrantsIssuedIn2015Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_WarrantsIssuedIn2015Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents information pertaining to warrants issued in 2015.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_WarrantsIssuedIn2015Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants Issued In2015 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_WarrantsIssuedIn2015Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants Issued in 2015</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_WarrantsIssuedIn2018Member" xlink:label="catb_WarrantsIssuedIn2018Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_WarrantsIssuedIn2018Member" xlink:to="catb_WarrantsIssuedIn2018Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_WarrantsIssuedIn2018Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents information pertaining to warrants issued in 2018.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_WarrantsIssuedIn2018Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants Issued In2018 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_WarrantsIssuedIn2018Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants Issued in 2018</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_WarrantsIssuedIn2019Member" xlink:label="catb_WarrantsIssuedIn2019Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_WarrantsIssuedIn2019Member" xlink:to="catb_WarrantsIssuedIn2019Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_WarrantsIssuedIn2019Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents information pertaining to warrants issued in 2019.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_WarrantsIssuedIn2019Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants Issued In2019 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_WarrantsIssuedIn2019Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants Issued in 2019</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_WarrantsIssuedIn2021Member" xlink:label="catb_WarrantsIssuedIn2021Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_WarrantsIssuedIn2021Member" xlink:to="catb_WarrantsIssuedIn2021Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_WarrantsIssuedIn2021Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to warrants issued in 2021.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_WarrantsIssuedIn2021Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants Issued In2021 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_WarrantsIssuedIn2021Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants Issued In 2021</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_WeightedAverageMember" xlink:label="srt_WeightedAverageMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_WeightedAverageMember" xlink:to="srt_WeightedAverageMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_WeightedAverageMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Weighted Average [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="srt_WeightedAverageMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Weighted Average</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_CommonStockOptionsOutstandingMember" xlink:label="catb_CommonStockOptionsOutstandingMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_CommonStockOptionsOutstandingMember" xlink:to="catb_CommonStockOptionsOutstandingMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_CommonStockOptionsOutstandingMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to the options outstanding to purchase common stock that has been reserved for future issuance.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_CommonStockOptionsOutstandingMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Common Stock Options Outstanding [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_CommonStockOptionsOutstandingMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Options outstanding to purchase Common Stock</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_CommonStockOptionsReservedMember" xlink:label="catb_CommonStockOptionsReservedMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_CommonStockOptionsReservedMember" xlink:to="catb_CommonStockOptionsReservedMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_CommonStockOptionsReservedMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to the options reserved to purchase common stock that has been reserved for future issuance.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_CommonStockOptionsReservedMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Common Stock Options Reserved [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_CommonStockOptionsReservedMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Options available for future issuance to purchase Common Stock</label>
    <loc xlink:type="locator" xlink:href="catb-20210630.xsd#catb_EmployeeStockPurchasePlan2015Member" xlink:label="catb_EmployeeStockPurchasePlan2015Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="catb_EmployeeStockPurchasePlan2015Member" xlink:to="catb_EmployeeStockPurchasePlan2015Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="catb_EmployeeStockPurchasePlan2015Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents information pertaining to the 2015 Employee Stock Purchase Plan ("2015 ESPP").</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="catb_EmployeeStockPurchasePlan2015Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Employee Stock Purchase Plan2015 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="catb_EmployeeStockPurchasePlan2015Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Shares reserved for the employee stock purchase plan</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="us-gaap_AwardTypeAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AwardTypeAxis" xlink:to="us-gaap_AwardTypeAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AwardTypeAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Award Type [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain]</label>
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      contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg"
      id="Tb_QF4SWt46r0WSPdv6U9QrYw">&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"&gt;&lt;b style="font-weight:bold;"&gt;1.&lt;/b&gt;&lt;b style="font-weight:bold;"&gt;&#160;&#160;&#160;&#160;&#160;Organization and Operations&lt;/b&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"&gt;&lt;span style="font-style:italic;font-weight:bold;"&gt;The Company&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"&gt;Catabasis Pharmaceuticals, Inc. (the &#x201c;Company&#x201d;) is a biopharmaceutical company focused on the discovery, development and commercialization of novel therapeutics. Its mission is to bring hope with life-changing therapies to patients and families. On October 26, 2020, the Company announced that the Phase 3 PolarisDMD trial of the Company&#x2019;s previous lead product candidate, edasalonexent, for the treatment of Duchenne muscular dystrophy (DMD) did not meet its primary and secondary endpoints. Based on these results, the Company announced that it was stopping activities related to the development of edasalonexent, including the Company&#x2019;s ongoing open-label extension trial. On January 28, 2021, the Company acquired Quellis Biosciences, Inc (&#x201c;Quellis&#x201d;). The Company's lead product candidate, which was acquired in the Quellis acquisition, is QLS-215, a monoclonal antibody inhibitor of plasma kallikrein in preclinical development for the treatment of hereditary angioedema, or HAE, a rare, debilitating and potentially life-threatening disease. The Company was incorporated in the State of Delaware on June 26, 2008.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"&gt;&lt;span style="font-style:italic;font-weight:bold;"&gt;Agreement and Plan of Merger&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"&gt;On January 28, 2021, the Company acquired Quellis (the &#x201c;Quellis Acquisition&#x201d;). Under the terms of the Merger Agreement, the Company issued to the stockholders of Quellis 3,332,669 shares of the Company&#x2019;s common stock, par value $0.001 per share, and 50,504 shares of newly designated Series X redeemable convertible preferred stock (&#x201c;Series X Preferred Stock&#x201d;) (as described below). The Series X Preferred Stock had a conversion value on the closing date of $122.7 million. In addition, the Company assumed options granted under the Quellis stock option plan, which became options to purchase 332,494 shares of the Company&#x2019;s common stock, a warrant to purchase 2,805 shares of Series X Preferred Stock at an exercise price of $341.70 per share, and a warrant to purchase 185,136 shares of the Company&#x2019;s common stock at an exercise price of $0.35 per share, which warrants are exercisable until December 14, 2030. Upon stockholder approval of the Conversion Proposal (as defined below) on June 2, 2021, the warrant to purchase Series X Preferred Stock was converted into the right to purchase 2,805,000 shares of the Company&#x2019;s common stock, at a per share exercise price of $0.35 per share.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"&gt;&lt;span style="font-style:italic;font-weight:bold;"&gt;Stock Purchase Agreement and Series X Preferred Stock&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"&gt;Concurrent with the Quellis Acquisition, the Company entered into a Stock Purchase Agreement (the &#x201c;Purchase Agreement&#x201d;) with certain institutional and accredited investors. Pursuant to the Purchase Agreement, the Company sold an aggregate of 35,573 shares of Series X Preferred Stock for gross proceeds of approximately $110.0 million, and net proceeds of $104.3 million (the &#x201c;February 2021 Financing&#x201d;). In accounting for the Purchase Agreement, the Company recorded a beneficial conversion feature of $19.6 million and issuance costs of $5.7 million. The combined total was treated as a discount to the value of Series X Preferred Stock, See Note 2 &#x2013; &#x201c;Summary of Significant Accounting Policies&#x201d; for further discussion. &lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;As a result of the Quellis Acquisition and the February 2021 Financing, in 2021 the Company issued the following Series X Preferred Stock or warrants to purchase Series X Preferred Stock:&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 0pt 36pt;"&gt;&lt;span style="margin-left:0pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"&gt;&lt;tr style="height:1pt;"&gt;&lt;td style="vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:12.19%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Series X&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:12.19%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Common Stock&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Preferred&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:12.19%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Issuable Upon&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Stock at &lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:12.19%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Conversion at &lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Transaction&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:12.19%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Transaction &lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.87%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Date&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:12.19%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Date&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;"&gt;Outstanding shares issued in merger&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 50,504&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:12.19%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 50,504,000&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;"&gt;Outstanding shares issued in February 2021 Financing&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 35,573&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:12.19%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 35,573,000&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;"&gt;Warrants assumed in merger&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.87%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 2,805&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:12.19%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 2,805,000&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Total&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.87%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 88,882&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:12.19%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 88,882,000&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;At its 2021 Annual Meeting of Stockholders on June 2, 2021, the Company&#x2019;s stockholders approved the conversion of the Company&#x2019;s Series X Preferred Stock into shares of the Company&#x2019;s common stock in accordance with Nasdaq Listing Rule 5635(a) (the &#x201c;Conversion Proposal&#x201d;). Following stockholder approval of the Conversion Proposal, each share of Series X Preferred Stock then &lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"&gt;outstanding automatically converted into 1,000 shares of the Company&#x2019;s common stock, subject to certain beneficial ownership limitations, including that a holder of Series X Preferred Stock is prohibited from converting shares of Series X Preferred Stock into shares of the Company&#x2019;s common stock if, as a result of such conversion, such holder, together with its affiliates, would beneficially own more than a specified percentage (to be initially set at 9.99% and thereafter adjustable by the holder to a number between 4.99% and 19.99%) of the total number of shares of the Company&#x2019;s common stock issued and outstanding immediately after giving effect to such conversion. As of June 30, 2021, 53,532 shares of Series X Preferred Stock were converted into 53,531,797 shares of common stock and 32,545 shares of Series X Preferred Stock remained outstanding. Outstanding shares of Series X Preferred Stock are subject to conversion at the option of the holder.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"&gt;Prior to stockholder approval of the Conversion Proposal, the terms of the Series X Preferred Stock included a cash redemption feature. This cash redemption feature resulted in substantial doubt about the Company&#x2019;s ability to continue as a going concern as disclosed in the Company&#x2019;s annual report on Form 10-K for the year ended December 31, 2020 (the &#x201c;2020 Annual Report on Form 10-K&#x201d;) and the Company&#x2019;s quarterly report on Form 10-Q for the three months ended March 31, 2021. &#160;Upon stockholder approval of the Conversion Proposal, the cash redemption feature was eliminated and, consequently, there is no longer substantial doubt about the Company&#x2019;s ability to continue as a going concern for at least twelve months subsequent to the issuance of these financial statements.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"&gt;Holders of Series X Preferred Stock are entitled to receive dividends, subject to certain beneficial ownership limitations, on shares of Series X Preferred Stock equal, on an as-if-converted-to-common-stock basis, and in the same form as dividends actually paid on shares of the Company&#x2019;s common stock. Except as otherwise required by law, the Series X Preferred Stock does not have voting rights. However, as long as any shares of Series X Preferred Stock are outstanding, the Company may not, without the affirmative vote of the holders of a majority of the then outstanding shares of the Series X Preferred Stock, (i) alter or change adversely the powers, preferences or rights given to the Series X Preferred Stock or alter or amend the Certificate of Designation that authorized the Series X Preferred Stock, amend or repeal any provision of, or add any provision to, the Company&#x2019;s Certificate of Incorporation or bylaws, or file any articles of amendment, certificate of designations, preferences, limitations and relative rights of any series of preferred stock, if such action would adversely alter or change the preferences, rights, privileges or powers of, or restrictions provided for the benefit of the Series X Preferred Stock, (ii) issue further shares of Series X Preferred Stock or increase or decrease (other than by conversion) the number of authorized shares of Series X Preferred Stock, or (iii) enter into any agreement with respect to any of the foregoing.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"&gt;&lt;span style="font-style:italic;font-weight:bold;"&gt;January 2020 Financing&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"&gt;On January 30, 2020, the Company entered into an underwriting agreement with Oppenheimer &amp;amp; Co. Inc. relating to an underwritten public offering (the &#x201c;January 2020 Financing&#x201d;) of 5,290,000 shares of common stock at a price to the public of $5.00 per share, including 690,000 shares issued upon the exercise in full by Oppenheimer &amp;amp; Co. Inc. of its overallotment option. This resulted in gross proceeds of $26.5 million, and net proceeds of $24.6 million.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"&gt;&lt;span style="font-style:italic;font-weight:bold;"&gt;Liquidity&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"&gt;The Company has entered into various sales agreements with Cowen and Company LLC (&#x201c;Cowen&#x201d;), pursuant to which the Company could issue and sell shares of common stock under at-the-market offering programs. On May 20, 2021, the Company terminated its sales agreement with Cowen. On June 30, 2021, the Company entered into an Open Market Sale Agreement&lt;sup style="font-size:7.5pt;line-height:100%;top:0pt;vertical-align:top;"&gt;SM&lt;/sup&gt; with Jefferies LLC (&#x201c;Jefferies&#x201d;), pursuant to which the Company could issue and sell shares of common stock of up to $25.0 million under at-the-market offering programs (collectively, with the Cowen at-the-market offering program, the &#x201c;ATM Programs&#x201d;). The Company pays 3% of the gross proceeds from any common stock sold through the ATM Programs. As of June 30, 2021, the Company has not sold any shares of common stock pursuant to the Jeffries agreement and $25.0 million of common stock remains available for sale under the Jefferies agreement.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"&gt;During the six months ended June 30, 2020, the Company sold an aggregate of 1,100,001 shares of common stock pursuant to the ATM Programs, at an average price of $6.87 per share, for net proceeds of $7.3 million after deducting sales commissions and offering expenses. There was no activity from the ATM Programs during the six months ended June 30, 2021.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;As of June 30, 2021, the Company had an accumulated deficit of $438.4 million and had available cash and cash equivalents of $139.5 million. The Company has been primarily involved with research and development activities and has incurred operating losses and negative cash flows from operations since its inception. The Company has not generated any product revenues and has financed its operations primarily through public offerings and private placements of its equity securities. There can be no assurance that the Company will be able to obtain additional debt, equity or other financing or generate product revenue or revenues from collaborative partners, on &lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"&gt;terms acceptable to the Company, on a timely basis or at all. The failure of the Company to obtain sufficient funds on acceptable terms when needed could have a material adverse effect on the Company's business, results of operations, and financial condition.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;The Company is subject to a number of risks similar to other life science companies, including, but not limited to, successful discovery and development of its drug candidates, raising additional capital, development by its competitors of new technological innovations, protection of proprietary technology and regulatory approval and market acceptance of the Company's products. The Company has been primarily involved with research and development activities and has incurred operating losses and negative cash flows from operations since its inception. 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      id="Tb_AsxBjGDqjEyYsFcLNQg3cA">&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;As a result of the Quellis Acquisition and the February 2021 Financing, in 2021 the Company issued the following Series X Preferred Stock or warrants to purchase Series X Preferred Stock:&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 0pt 36pt;"&gt;&lt;span style="margin-left:0pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"&gt;&lt;tr style="height:1pt;"&gt;&lt;td style="vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New 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style="vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Series X&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:12.19%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Common Stock&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td 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Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Stock at &lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:12.19%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Conversion at &lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Transaction&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:12.19%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Transaction &lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.87%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Date&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:12.19%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Date&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;"&gt;Outstanding shares issued in merger&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 50,504&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:12.19%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 50,504,000&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;"&gt;Outstanding shares issued in February 2021 Financing&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 35,573&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:12.19%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 35,573,000&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;"&gt;Warrants assumed in merger&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.87%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 2,805&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:12.19%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 2,805,000&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Total&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.87%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 88,882&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:12.19%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 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      id="Tb_X50iDv3k_kCSV-wPnLCzfA">&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"&gt;&lt;b style="font-weight:bold;"&gt;2.&#160;&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;b style="font-weight:bold;"&gt;Summary of Significant Accounting Policies&lt;/b&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"&gt;&lt;span style="font-style:italic;font-weight:bold;"&gt;Basis of Presentation and Principles of Consolidation&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"&gt;The accompanying financial statements and the related disclosures are unaudited and have been prepared in accordance with United States generally accepted accounting principles (&#x201c;U.S. GAAP&#x201d;). Additionally, certain information and footnote disclosures normally included in the Company&#x2019;s annual financial statements have been condensed or omitted from this report. Accordingly, these condensed financial statements should be read in conjunction with the financial statements as of and for the year ended December 31, 2020 and notes thereto included in the 2020 Annual Report on Form 10-K.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"&gt;The unaudited interim condensed consolidated financial statements have been prepared on the same basis as the audited financial statements. In the opinion of the Company&#x2019;s management, the accompanying unaudited interim condensed consolidated financial statements contain all adjustments, including those adjustments that are of a normal and recurring nature, which are necessary to fairly present the Company&#x2019;s results for the interim periods presented. The results for the three and six months ended June 30, 2021 are not necessarily indicative of the results for the year ending December 31, 2021, or for any future period.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"&gt;The accompanying condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries, Catabasis Securities Corporation and Quellis Biosciences, LLC, successor in interest to Quellis. All intercompany balances and transactions have been eliminated in consolidation.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"&gt;&lt;span style="font-style:italic;font-weight:bold;"&gt;Use of Estimates&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"&gt;The preparation of the Company&#x2019;s condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Actual results could differ from such estimates.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;The Company utilizes certain estimates to record expenses relating to research and development contracts. These contract estimates, which are primarily related to the length of service of each contract and the amount of service provided as of each measurement date, are determined by the Company based on input from internal project management, as well as from the Company&#x2019;s service providers.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"&gt;&lt;span style="font-style:italic;font-weight:bold;"&gt;Net Loss Per Share&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"&gt;Basic net loss per share is calculated by dividing net loss attributable to common shareholders by the weighted average shares outstanding during the period, without consideration for common stock equivalents. Diluted net loss per share is calculated by adjusting weighted average shares outstanding for the dilutive effect of common stock equivalents outstanding for the period, determined using the treasury-stock method. For purposes of the Company&#x2019;s dilutive net loss per share calculation, preferred stock, stock options and warrants to purchase common stock and preferred stock were considered to be common stock equivalents but were excluded from the calculation of diluted net loss per share, as their effect would be anti-dilutive; therefore, basic and diluted net loss per share were the same for all periods presented. &lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;The following common stock equivalents were excluded from the calculation of diluted net loss per share for the periods indicated because including them would have had an anti-dilutive effect:&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:79.99%;"&gt;&lt;tr style="height:1pt;"&gt;&lt;td style="vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.24%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.21%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="3" style="vertical-align:bottom;white-space:nowrap;width:30.77%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Three and Six Months Ended June&#160;30,&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.24%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;2021&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.21%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;2020&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Series X Preferred Stock (1)&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;32,545,203 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.21%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Stock&#160;options&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;7,930,334 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.21%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 1,301,262&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Common&#160;stock&#160;warrants&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;9,183,885 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.21%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 6,193,749&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:67.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.24%;border-bottom:3px double #000000;border-top:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;49,659,422 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.21%;border-bottom:3px double #000000;border-top:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 7,495,011&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;div style="font-family:'Times New Roman','Times','serif';font-size:9.0pt;margin-bottom:0pt;margin-left:54pt;min-height:1.19em;position:relative;width:100%;"&gt;&lt;div style="background-color:#000000;height:1pt;position:relative;top:0.6em;width:25.0%;border:none;margin:0 auto 0 0;"/&gt;&lt;/div&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 54pt;"&gt;(1)&#160;&#160;&#160;&#160;Shown as common stock equivalents&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-style:italic;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"&gt;&lt;span style="font-style:italic;font-weight:bold;"&gt;Cash,&#160;Cash&#160;Equivalents and Restricted Cash&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;The reconciliation of cash, cash equivalents and restricted cash reported within the applicable balance sheet that sum to the total of the same such amount shown in the statement of cash flows is as follows (in thousands):&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"&gt;&lt;tr style="height:1pt;"&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.23%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="5" style="vertical-align:bottom;white-space:nowrap;width:23.76%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;June&#160;30,&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.71%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;2021&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;2020&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Cash&#160;and&#160;cash&#160;equivalents&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.23%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;139,520 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 51,885&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Restricted&#160;cash&#160;(1)&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.23%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;121 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 235&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Total&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.23%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;139,641 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 52,120&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;div style="font-family:'Times New Roman','Times','serif';font-size:9.0pt;margin-bottom:0pt;margin-left:54pt;min-height:1.19em;position:relative;width:100%;"&gt;&lt;div style="background-color:#000000;height:1pt;position:relative;top:0.6em;width:25.0%;border:none;margin:0 auto 0 0;"/&gt;&lt;/div&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:9pt;line-height:1.19;text-align:justify;margin:0pt 0pt 0pt 54pt;"&gt;(1)&#160;&#160;&#160;&#160;Included in prepaid expenses and other current assets and other assets.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"&gt;&lt;span style="font-size:9pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"&gt;&lt;span style="font-style:italic;font-weight:bold;"&gt;Acquired In-Process Research and Development&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"&gt;The Company measures and recognizes asset acquisitions that are not deemed to be business combinations based on the cost to acquire the assets, which includes transaction costs. Goodwill is not recognized in asset acquisitions. In an asset acquisition, the cost allocated to acquire in-process research and development (&#x201c;IPR&amp;amp;D&#x201d;) with no alternative future use is charged to expense at the acquisition date. Refer to Note 3, &#x201c;Acquisition of Quellis&#x201d; for a more detailed description of the accounting policy utilized for the recent asset acquisition.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"&gt;&lt;span style="font-style:italic;font-weight:bold;"&gt;Preferred Stock Discount&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"&gt;As discussed above, in February 2021, the Company issued Series X Preferred Stock in a private placement transaction. It was determined that this transaction resulted in recognition of a beneficial conversion feature, which was valued based on the difference between the price of the shares of common stock on the date of commitment and the conversion price on the closing date, resulting in a total value of $19.6 million. Additionally, the Company incurred total issuance costs of $5.7 million related to the private placement. Both of these features were taken as a discount on Series X Preferred Stock recognized at the close of the transaction. These features are analogous to preferred dividends and are recorded as a non-cash return to holders of Series X Preferred Stock through additional paid in capital. The discount related to the beneficial conversion feature is recognized through the earliest possible date of conversion, which occurred upon the shareholder approval of the conversion in June 2021. The issuance costs are recognized as a dividend at the time of conversion to common shares. As of June 30, 2021, $24.4 million of the above amounts were accounted for as a non-cash return related to shares of Series X Preferred Stock.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"&gt;&lt;span style="font-style:italic;font-weight:bold;"&gt;Recent&#160;Accounting&#160;Pronouncements - Not Yet Adopted&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"&gt;From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board (&#x201c;FASB&#x201d;) or other standard setting bodies and adopted by the Company as of the specified effective date.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;In June 2016, the FASB issued Accounting Standards Update (&#x201c;ASU&#x201d;) 2016-13, &lt;i style="font-style:italic;"&gt;Financial Instruments-Credit Losses&lt;/i&gt; (Topic 326). This standard requires a financial asset to be presented at amortized cost basis at the net amount expected to be collected. It also requires that credit losses relating to available-for-sale debt securities should be recorded through an allowance for credit losses. In November 2019, the FASB issued an amendment making this ASU effective for annual reporting periods beginning after December 15, 2022 for &lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"&gt;smaller reporting companies, early adoption is permitted. The Company is currently evaluating the impact that this standard will have on its consolidated financial statements.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"&gt;&lt;span style="font-style:italic;font-weight:bold;"&gt;Summary&#160;of Significant&#160;Accounting Policies&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;The Company&#x2019;s significant accounting policies are described in Note 2, &#x201c;Summary of Significant Accounting Policies,&#x201d; in the Company&#x2019;s 2020 Annual Report on Form 10-K, and there were no significant changes to such policies in the three and six months ended June 30, 2021 that had a material impact on the Company&#x2019;s results of operations or financial position.&lt;/p&gt;</us-gaap:SignificantAccountingPoliciesTextBlock>
    <us-gaap:BasisOfAccountingPolicyPolicyTextBlock
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      id="Tb_OYKhbU_1tk6ZSmKH4CRPrg">&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"&gt;&lt;span style="font-style:italic;font-weight:bold;"&gt;Basis of Presentation and Principles of Consolidation&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"&gt;The accompanying financial statements and the related disclosures are unaudited and have been prepared in accordance with United States generally accepted accounting principles (&#x201c;U.S. GAAP&#x201d;). Additionally, certain information and footnote disclosures normally included in the Company&#x2019;s annual financial statements have been condensed or omitted from this report. Accordingly, these condensed financial statements should be read in conjunction with the financial statements as of and for the year ended December 31, 2020 and notes thereto included in the 2020 Annual Report on Form 10-K.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"&gt;The unaudited interim condensed consolidated financial statements have been prepared on the same basis as the audited financial statements. In the opinion of the Company&#x2019;s management, the accompanying unaudited interim condensed consolidated financial statements contain all adjustments, including those adjustments that are of a normal and recurring nature, which are necessary to fairly present the Company&#x2019;s results for the interim periods presented. The results for the three and six months ended June 30, 2021 are not necessarily indicative of the results for the year ending December 31, 2021, or for any future period.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"&gt;The accompanying condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries, Catabasis Securities Corporation and Quellis Biosciences, LLC, successor in interest to Quellis. All intercompany balances and transactions have been eliminated in consolidation.&lt;/p&gt;</us-gaap:BasisOfAccountingPolicyPolicyTextBlock>
    <us-gaap:UseOfEstimates
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      id="Tb_TmcmZjsI3Uy2so-6y7utRQ">&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"&gt;&lt;span style="font-style:italic;font-weight:bold;"&gt;Use of Estimates&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"&gt;The preparation of the Company&#x2019;s condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Actual results could differ from such estimates.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;The Company utilizes certain estimates to record expenses relating to research and development contracts. These contract estimates, which are primarily related to the length of service of each contract and the amount of service provided as of each measurement date, are determined by the Company based on input from internal project management, as well as from the Company&#x2019;s service providers.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;</us-gaap:UseOfEstimates>
    <us-gaap:EarningsPerSharePolicyTextBlock
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      id="Tb_UzEW05Wj8kCDGOdet_TlPQ">&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"&gt;&lt;span style="font-style:italic;font-weight:bold;"&gt;Net Loss Per Share&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"&gt;Basic net loss per share is calculated by dividing net loss attributable to common shareholders by the weighted average shares outstanding during the period, without consideration for common stock equivalents. Diluted net loss per share is calculated by adjusting weighted average shares outstanding for the dilutive effect of common stock equivalents outstanding for the period, determined using the treasury-stock method. For purposes of the Company&#x2019;s dilutive net loss per share calculation, preferred stock, stock options and warrants to purchase common stock and preferred stock were considered to be common stock equivalents but were excluded from the calculation of diluted net loss per share, as their effect would be anti-dilutive; therefore, basic and diluted net loss per share were the same for all periods presented. &lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;The following common stock equivalents were excluded from the calculation of diluted net loss per share for the periods indicated because including them would have had an anti-dilutive effect:&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:79.99%;"&gt;&lt;tr style="height:1pt;"&gt;&lt;td style="vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.24%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.21%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="3" style="vertical-align:bottom;white-space:nowrap;width:30.77%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Three and Six Months Ended June&#160;30,&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.24%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;2021&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.21%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;2020&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Series X Preferred Stock (1)&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;32,545,203 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.21%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Stock&#160;options&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;7,930,334 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.21%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 1,301,262&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Common&#160;stock&#160;warrants&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;9,183,885 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.21%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 6,193,749&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:67.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.24%;border-bottom:3px double #000000;border-top:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;49,659,422 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.21%;border-bottom:3px double #000000;border-top:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 7,495,011&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;div style="font-family:'Times New Roman','Times','serif';font-size:9.0pt;margin-bottom:0pt;margin-left:54pt;min-height:1.19em;position:relative;width:100%;"&gt;&lt;div style="background-color:#000000;height:1pt;position:relative;top:0.6em;width:25.0%;border:none;margin:0 auto 0 0;"/&gt;&lt;/div&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 54pt;"&gt;(1)&#160;&#160;&#160;&#160;Shown as common stock equivalents&lt;/p&gt;</us-gaap:EarningsPerSharePolicyTextBlock>
    <us-gaap:ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock
      contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg"
      id="Tb_gl3Wl6HHmUGIXf72NLXsQg">&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:79.99%;"&gt;&lt;tr style="height:1pt;"&gt;&lt;td style="vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.24%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.21%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="3" style="vertical-align:bottom;white-space:nowrap;width:30.77%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Three and Six Months Ended June&#160;30,&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.24%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;2021&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.21%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;2020&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Series X Preferred Stock (1)&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;32,545,203 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.21%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Stock&#160;options&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;7,930,334 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.21%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 1,301,262&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Common&#160;stock&#160;warrants&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;9,183,885 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.21%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 6,193,749&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:67.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.24%;border-bottom:3px double #000000;border-top:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;49,659,422 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.21%;border-bottom:3px double #000000;border-top:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 7,495,011&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;div style="font-family:'Times New Roman','Times','serif';font-size:9.0pt;margin-bottom:0pt;margin-left:54pt;min-height:1.19em;position:relative;width:100%;"&gt;&lt;div style="background-color:#000000;height:1pt;position:relative;top:0.6em;width:25.0%;border:none;margin:0 auto 0 0;"/&gt;&lt;/div&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 54pt;"&gt;(1)&#160;&#160;&#160;&#160;Shown as common stock equivalents&lt;/p&gt;</us-gaap:ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock>
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    <us-gaap:CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy
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      id="Tb_-noXyL6kWEy8MBVpuA_uaA">&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-style:italic;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"&gt;&lt;span style="font-style:italic;font-weight:bold;"&gt;Cash,&#160;Cash&#160;Equivalents and Restricted Cash&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;The reconciliation of cash, cash equivalents and restricted cash reported within the applicable balance sheet that sum to the total of the same such amount shown in the statement of cash flows is as follows (in thousands):&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"&gt;&lt;tr style="height:1pt;"&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.23%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="5" style="vertical-align:bottom;white-space:nowrap;width:23.76%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;June&#160;30,&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.71%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;2021&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;2020&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Cash&#160;and&#160;cash&#160;equivalents&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.23%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;139,520 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 51,885&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Restricted&#160;cash&#160;(1)&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.23%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;121 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 235&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Total&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.23%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;139,641 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 52,120&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;div style="font-family:'Times New Roman','Times','serif';font-size:9.0pt;margin-bottom:0pt;margin-left:54pt;min-height:1.19em;position:relative;width:100%;"&gt;&lt;div style="background-color:#000000;height:1pt;position:relative;top:0.6em;width:25.0%;border:none;margin:0 auto 0 0;"/&gt;&lt;/div&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:9pt;line-height:1.19;text-align:justify;margin:0pt 0pt 0pt 54pt;"&gt;(1)&#160;&#160;&#160;&#160;Included in prepaid expenses and other current assets and other assets.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"&gt;&lt;span style="font-size:9pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;</us-gaap:CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy>
    <us-gaap:ScheduleOfRestrictedCashAndCashEquivalentsTextBlock
      contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg"
      id="Tb_g4q-TcwM706PeSZb2kPqRg">&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;The reconciliation of cash, cash equivalents and restricted cash reported within the applicable balance sheet that sum to the total of the same such amount shown in the statement of cash flows is as follows (in thousands):&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"&gt;&lt;tr style="height:1pt;"&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.23%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="5" style="vertical-align:bottom;white-space:nowrap;width:23.76%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;June&#160;30,&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.71%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;2021&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;2020&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Cash&#160;and&#160;cash&#160;equivalents&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.23%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;139,520 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 51,885&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Restricted&#160;cash&#160;(1)&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.23%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;121 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 235&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Total&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.23%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;139,641 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 52,120&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;div style="font-family:'Times New Roman','Times','serif';font-size:9.0pt;margin-bottom:0pt;margin-left:54pt;min-height:1.19em;position:relative;width:100%;"&gt;&lt;div style="background-color:#000000;height:1pt;position:relative;top:0.6em;width:25.0%;border:none;margin:0 auto 0 0;"/&gt;&lt;/div&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:9pt;line-height:1.19;text-align:justify;margin:0pt 0pt 0pt 54pt;"&gt;(1)&#160;&#160;&#160;&#160;Included in prepaid expenses and other current assets and other assets.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"&gt;&lt;span style="font-size:9pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;</us-gaap:ScheduleOfRestrictedCashAndCashEquivalentsTextBlock>
    <us-gaap:CashAndCashEquivalentsAtCarryingValue
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      unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ">139520000</us-gaap:CashAndCashEquivalentsAtCarryingValue>
    <us-gaap:CashAndCashEquivalentsAtCarryingValue
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      id="Tc_VsEh_FFcZkmEJQ4Fb1d3-Q_3_6"
      unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ">51885000</us-gaap:CashAndCashEquivalentsAtCarryingValue>
    <us-gaap:RestrictedCashAndCashEquivalents
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      unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ">121000</us-gaap:RestrictedCashAndCashEquivalents>
    <us-gaap:RestrictedCashAndCashEquivalents
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      unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ">235000</us-gaap:RestrictedCashAndCashEquivalents>
    <us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
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      unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ">139641000</us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents>
    <us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
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      unitRef="Unit_Standard_USD_-JcXRMewHUeExH2HiireHQ">52120000</us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents>
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      id="Tb_aWzRxQyvFUejX8f0mFNuFQ">&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"&gt;&lt;b style="font-weight:bold;"&gt;3.&#160;&#160;&#160;&#160;&#160;Acquisition of Quellis&lt;/b&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"&gt;On January 28, 2021, the Company completed its acquisition of Quellis in accordance with the terms of the Merger Agreement as discussed in Note 1, &#x201c;Organization and Operations&#x201d;&lt;i style="font-style:italic;"&gt;.&lt;/i&gt; Under the terms of the Merger Agreement, the Company issued 3,332,669 shares of Common Stock and 50,504 shares of Series X Preferred Stock. Each share of Series X Preferred Stock is convertible into 1,000 shares of Common Stock, subject to certain conditions.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"&gt;The Company concluded that the Quellis Acquisition was not the acquisition of a business, as substantially all of the fair value of the non-monetary assets acquired was concentrated in a single identifiable asset, QLS-215.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;The Company determined that the cost to acquire the Quellis assets was $170.7 million, based on the fair value of the equity consideration issued and including direct costs of the acquisition of $1.8 million. The net assets acquired in connection with the Quellis Acquisition were recorded at their estimated fair values as of January 28, 2021, which is the date the Quellis Acquisition was completed. The following table summarizes the net assets acquired based on their estimated fair values as of January 28, 2021 (in thousands):&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"&gt;&lt;tr style="height:1pt;"&gt;&lt;td style="vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.8%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Acquired IPR&amp;amp;D&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.8%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 164,612&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Cash and cash equivalents&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.8%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 8,307&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Prepaid expenses and other assets&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.8%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 136&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Accounts payable&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.8%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt; (1,974)&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Accrued liabilities&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.87%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.8%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt; (400)&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Net acquired tangible assets&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.87%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.8%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 170,681&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;In the estimation of fair value of the asset purchase consideration, the Company used the carrying value of the cash and cash equivalents, prepaid expenses, accounts payable and accrued liabilities as the most reliable indicator of fair value based on the associated short-term nature of the balances. The remaining fair value was attributable to the acquired IPR&amp;amp;D. As QLS-215 had not, at the time of the Quellis Acquisition, received regulatory approval in any territory, the cost attributable to the IPR&amp;amp;D was expensed in the Company&#x2019;s consolidated statements of operations and comprehensive loss for the six months ended June 30, 2021 as the acquired IPR&amp;amp;D had no alternative future use, as determined by the Company in accordance with U.S. GAAP.&lt;/p&gt;</us-gaap:BusinessCombinationDisclosureTextBlock>
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      id="Group_yiyV36eF2kaorfjlXvpcKg">The following table summarizes the net assets acquired based on their estimated fair values as of January 28, 2021 (in thousands):&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"&gt;&lt;tr style="height:1pt;"&gt;&lt;td style="vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.8%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Acquired IPR&amp;amp;D&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.8%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 164,612&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Cash and cash equivalents&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.8%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 8,307&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Prepaid expenses and other assets&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.8%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 136&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Accounts payable&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.8%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt; (1,974)&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Accrued liabilities&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.87%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.8%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt; (400)&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Net acquired tangible assets&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.87%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.8%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 170,681&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</us-gaap:ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock>
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    <us-gaap:FairValueDisclosuresTextBlock
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      id="Tb_2Qa90d_W8EayizmqDDswfw">&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"&gt;&lt;b style="font-weight:bold;"&gt;4.&#160;&#160;&#160;&#160;Financial Instruments&lt;/b&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"&gt;The tables below present information about the Company&#x2019;s assets and liabilities that are measured at fair value on a recurring basis as of June 30, 2021 and December 31, 2020 and indicate the fair value hierarchy of the valuation techniques the Company utilized to determine such fair value. In general, fair values determined by Level 1 inputs utilize observable inputs such as quoted prices in active markets for identical assets or liabilities. Fair values determined by Level 2 inputs utilize data points that are either directly or indirectly observable, such as quoted prices, interest rates and yield curves. Fair values determined by Level 3 inputs utilize unobservable data points for which there is little or no market data, which require the Company to develop its own assumptions for the asset or liability. There were no transfers between fair value measurement levels during the three and six months ended June 30, 2021 or 2020.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;The Company&#x2019;s investment portfolio may include fixed income securities that do not always trade on a daily basis. As a result, the pricing services used by the Company apply other available information as applicable through processes such as benchmark yields, benchmarking of like securities, sector groupings and matrix pricing to prepare valuations. The Company validates the prices provided by its third party pricing services by obtaining market values from other pricing sources and analyzing pricing data in certain instances. The Company has from time to time invested in certain reverse repurchase agreements which are collateralized by deposits in the form of U.S. Government Securities and Obligations for an amount no less than 102% of their value. The Company has not recorded an asset &lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"&gt;or liability for the collateral as the Company was not permitted to sell or re-pledge the collateral. The collateral had at least the prevailing credit rating of U.S. Government Treasuries and Agencies. The Company utilized a third-party custodian to manage the exchange of funds and ensure that collateral received is maintained at 102% of the value of the reverse repurchase agreements on a daily basis.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"&gt;The Company accounted for warrants to purchase its stock pursuant to Accounting Standards Codification (&#x201c;ASC&#x201d;) Topic 470, &lt;i style="font-style:italic;"&gt;Debt&lt;/i&gt;, and ASC Topic 480, &lt;i style="font-style:italic;"&gt;Distinguishing Liabilities from Equity&lt;/i&gt;, and classifies warrants for common stock and preferred stock as liabilities or equity. The warrants classified as liabilities are reported at their estimated fair value and any changes in fair value are reflected in research and development expense. The warrants classified as equity are reported at their estimated fair value with no subsequent remeasurement.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;Below is a summary of assets and liabilities measured at fair value on a recurring basis (in thousands):&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"&gt;&lt;tr style="height:1pt;"&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="11" style="vertical-align:bottom;white-space:nowrap;width:49.79%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;As of June&#160;30,&#160;2021&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Quoted Prices&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Significant&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Significant&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.65%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;in Active&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Observable&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Unobservable&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.65%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Markets&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Inputs&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Inputs&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.65%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;(Level 1)&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;(Level 2)&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;(Level 3)&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.65%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Total&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Assets:&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;"&gt;Cash and cash equivalents:&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;"&gt;Money market funds&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 1,841&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:middle;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 1,841&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;"&gt;Reverse repurchase agreements&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 39,000&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:middle;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.17%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 39,000&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;"&gt;Total assets&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 1,841&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 39,000&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 40,841&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"&gt;&lt;tr style="height:1pt;"&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-family:'Calibri','Helvetica','sans-serif';font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-family:'Calibri','Helvetica','sans-serif';font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="11" style="vertical-align:bottom;white-space:nowrap;width:49.79%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;As of December&#160;31,&#160;2020&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Quoted Prices&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Significant&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Significant&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.65%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;in Active&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Observable&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Unobservable&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.65%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Markets&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Inputs&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Inputs&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.65%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;(Level 1)&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;(Level&#160;2)&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;(Level&#160;3)&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.65%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Total&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Assets:&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;"&gt;Cash&#160;and&#160;cash&#160;equivalents:&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 24pt;"&gt;Money&#160;market&#160;funds&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 22,999&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 22,999&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;"&gt;Short-term&#160;investments:&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 24pt;"&gt;Reverse&#160;repurchase&#160;agreements&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 20,000&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 20,000&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Total&#160;assets&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 22,999&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 20,000&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.17%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 42,999&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"&gt;At June 30, 2021 and December 31, 2020, cash equivalents approximated their fair value due to their short-term nature.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;The warrant liability was valued based on significant inputs not observable in the market, which represents a Level 3 measurement within the fair value hierarchy. The Company estimated the fair value of the warrant liability using Black-Scholes option-pricing models and assumptions that are based on the individual characteristics of the warrants on the valuation date, as well as assumptions including the fair value per share of the underlying security, the remaining contractual term of the warrant, risk-free interest rate, expected dividend yield and expected volatility of the price of the underlying security (in thousands).&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"&gt;&lt;tr style="height:1pt;"&gt;&lt;td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.7%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.32%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;June 30, 2021&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Balance at beginning of year&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Issuance of warrants&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 4,332&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;(Decrease) increase in the fair value of the warrants&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt; (864)&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Reclassification of warrant liability to additional paid-in capital&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.62%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt; (3,468)&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Ending balance&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.7%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.62%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;</us-gaap:FairValueDisclosuresTextBlock>
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      id="Tb_fYn1hycRjEiQ_jaYCVPCUQ">&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;Below is a summary of assets and liabilities measured at fair value on a recurring basis (in thousands):&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"&gt;&lt;tr style="height:1pt;"&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New 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Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="11" style="vertical-align:bottom;white-space:nowrap;width:49.79%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;As of June&#160;30,&#160;2021&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Quoted Prices&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Significant&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Significant&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.65%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;in Active&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Observable&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Unobservable&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.65%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Markets&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Inputs&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Inputs&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.65%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;(Level 1)&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;(Level 2)&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;(Level 3)&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.65%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Total&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Assets:&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;"&gt;Cash and cash equivalents:&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;"&gt;Money market funds&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 1,841&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:middle;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 1,841&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;"&gt;Reverse repurchase agreements&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 39,000&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:middle;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.17%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 39,000&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;"&gt;Total assets&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 1,841&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 39,000&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 40,841&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"&gt;&lt;tr style="height:1pt;"&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-family:'Calibri','Helvetica','sans-serif';font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-family:'Calibri','Helvetica','sans-serif';font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="11" style="vertical-align:bottom;white-space:nowrap;width:49.79%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;As of December&#160;31,&#160;2020&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Quoted Prices&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Significant&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Significant&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.65%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;in Active&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Observable&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Unobservable&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.65%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Markets&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Inputs&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Inputs&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;width:10.65%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;(Level 1)&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;(Level&#160;2)&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;(Level&#160;3)&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.65%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Total&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Assets:&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;"&gt;Cash&#160;and&#160;cash&#160;equivalents:&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 24pt;"&gt;Money&#160;market&#160;funds&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 22,999&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 22,999&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;"&gt;Short-term&#160;investments:&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 24pt;"&gt;Reverse&#160;repurchase&#160;agreements&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 20,000&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 20,000&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Total&#160;assets&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 22,999&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 20,000&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:9.17%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 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      id="Group_dwlqIqCp9EmLzGcP2oyIJQ">The Company estimated the fair value of the warrant liability using Black-Scholes option-pricing models and assumptions that are based on the individual characteristics of the warrants on the valuation date, as well as assumptions including the fair value per share of the underlying security, the remaining contractual term of the warrant, risk-free interest rate, expected dividend yield and expected volatility of the price of the underlying security (in thousands).&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"&gt;&lt;tr style="height:1pt;"&gt;&lt;td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.7%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.32%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;June 30, 2021&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Balance at beginning of year&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Issuance of warrants&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 4,332&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;(Decrease) increase in the fair value of the warrants&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.7%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt; (864)&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Reclassification of warrant liability to additional paid-in capital&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.62%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt; (3,468)&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Ending balance&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.7%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.62%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 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      id="Tb_lM95Rl86yk-ZypJIGT6IPg">&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"&gt;&lt;b style="font-weight:bold;"&gt;5.&#160;&#160;&#160;&#160;Short-Term Investments&lt;/b&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;The Company did not hold any short-term investments at June 30, 2021. The following table summarizes the short-term investments held at December 31, 2020 (in thousands):&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"&gt;&lt;tr style="height:1pt;"&gt;&lt;td style="vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.24%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.22%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.22%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.2%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.6%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Gross&#160;Unrealized&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.6%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Gross&#160;Unrealized&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.2%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.62%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Amortized&#160;Cost&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Gains&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Losses&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.58%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Fair&#160;Value&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;December 31, 2020&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.2%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;"&gt;Reverse&#160;repurchase&#160;agreements&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.24%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 20,000&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.2%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 20,000&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"&gt;Total&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.24%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 20,000&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.2%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 20,000&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;"&gt;The contractual maturities of all short-term investments held at December 31, 2020 were one year or less. There were no short-term investments in an unrealized loss position at December 31, 2020. &lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;Gross realized gains and losses on the sales of short-term investments are included in other income, net. Unrealized holding gains or losses for the period that have been included in accumulated other comprehensive income, as well as gains and losses reclassified out of accumulated other comprehensive income into other income, net were not material to the Company&#x2019;s condensed consolidated results of operations. The cost of investments sold or the amount reclassified out of the accumulated other comprehensive income into other income, net is based on the specific identification method for purposes of recording realized gains and losses. All proceeds in the three and six-month periods ended June 30, 2021 and 2020 related to maturities of underlying investments. The gains on proceeds from maturities of short-term investments were not material to the Company&#x2019;s condensed consolidated results of operations for the three and six months ended June 30, 2021 and 2020.&lt;/p&gt;</catb:ShortTermInvestmentsTextBlock>
    <us-gaap:MarketableSecuritiesTextBlock
      contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg"
      id="Tb_1WF9VOFDvkG1KfpaX-qjug">&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;The Company did not hold any short-term investments at June 30, 2021. The following table summarizes the short-term investments held at December 31, 2020 (in thousands):&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"&gt;&lt;tr style="height:1pt;"&gt;&lt;td style="vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.24%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.22%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.22%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.2%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.6%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Gross&#160;Unrealized&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.6%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Gross&#160;Unrealized&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.2%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.62%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Amortized&#160;Cost&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Gains&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Losses&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.58%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Fair&#160;Value&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;December 31, 2020&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.22%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.2%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;"&gt;Reverse&#160;repurchase&#160;agreements&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.24%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 20,000&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.2%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 20,000&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"&gt;Total&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.24%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 20,000&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.2%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 20,000&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;</us-gaap:MarketableSecuritiesTextBlock>
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      id="Tb_vboyPzSFNU-kOTTKeIJhug">&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"&gt;&lt;b style="font-weight:bold;"&gt;6.&lt;/b&gt;&lt;b style="font-weight:bold;"&gt;&#160;&#160;&#160;&#160;Accrued Expenses&lt;/b&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;Accrued expenses consisted of the following (in thousands):&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:79.99%;"&gt;&lt;tr style="height:1pt;"&gt;&lt;td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.02%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;June&#160;30,&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.02%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;December&#160;31,&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.02%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;2021&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.02%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;2020&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Accrued&#160;compensation&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;1,018 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 1,719&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Accrued contracted research costs&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;790 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 1,726&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Accrued professional fees&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;663 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 356&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Accrued other&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;180 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Accrued severance&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;63 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 396&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Total&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.42%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.6%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;2,714 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.42%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.6%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 4,197&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;</us-gaap:AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock>
    <us-gaap:ScheduleOfAccruedLiabilitiesTableTextBlock
      contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg"
      id="Tb_B9HAzZzHoEmW2sFXYlL-og">&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;Accrued expenses consisted of the following (in thousands):&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:79.99%;"&gt;&lt;tr style="height:1pt;"&gt;&lt;td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.02%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;June&#160;30,&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.02%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;December&#160;31,&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.02%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;2021&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"&gt;&#160;&#160;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.02%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;2020&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Accrued&#160;compensation&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;1,018 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 1,719&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Accrued contracted research costs&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;790 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 1,726&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Accrued professional fees&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;663 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 356&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Accrued other&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;180 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Accrued severance&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;63 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 396&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Total&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.42%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.6%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;2,714 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.42%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.6%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 4,197&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</us-gaap:ScheduleOfAccruedLiabilitiesTableTextBlock>
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      id="Tb_i3CftoSHyUy0B2gcMTxCTA">&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"&gt;&lt;b style="font-weight:bold;"&gt;7.&lt;/b&gt;&lt;b style="font-weight:bold;"&gt;&#160;&#160;&#160;&#160;Stockholders&#x2019; Equity&lt;/b&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"&gt;&lt;span style="font-style:italic;font-weight:bold;"&gt;Preferred Stock&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;Under the Company&#x2019;s amended and restated certificate of incorporation, the Company has 5,000,000 shares of preferred stock authorized for issuance, with a $0.001 par value per share. Preferred stock may be issued from time to time in one or more series, each series to have such terms as stated or expressed in the resolutions providing for the issue of such series adopted by the board of directors of the Company. Preferred stock which may be redeemed, purchased or acquired by the Company may be reissued except as otherwise &lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"&gt;provided by law. As of June 30, 2021, the Company had 32,545 shares of Series X Preferred Stock outstanding. Refer to Note 1 &#x201c;Organization and Operations&lt;i style="font-style:italic;"&gt;&#x201d;&lt;/i&gt; regarding the Company&#x2019;s issuance of Series X Preferred Stock in January 2021 and February 2021.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"&gt;&lt;span style="font-style:italic;font-weight:bold;"&gt;Outstanding Warrants&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;The following table presents information about warrants that are issued and outstanding at June 30, 2021: &#160;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"&gt;&lt;tr style="height:1pt;"&gt;&lt;td style="vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:32.95%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Year Issued&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:15.4%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Equity Instrument&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:18.06%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Warrants&#160;Outstanding&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.43%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Exercise&#160;Price&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.72%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Date&#160;of&#160;Expiration&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;2014&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt; Common Stock &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;1,227 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;122.12 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;8/26/2021&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;2015&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt; Common Stock &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;1,227 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;122.12 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;3/30/2022&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;2018&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt; Common Stock &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;4,199,995 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;12.00 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;6/21/2023&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;2019&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt; Common Stock &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;1,991,300 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;6.25 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;2/7/2024&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;2021&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt; Common Stock &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.06%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;2,990,136 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;0.35 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;12/14/2030&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Total&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:18.06%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;9,183,885 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Weighted average exercise price&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;6.99 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Weighted average life in years&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;4.55 &lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;</us-gaap:PreferredStockTextBlock>
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      id="Tb_D5-sJ6ga20amFzh0uB_fCg">&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;The following table presents information about warrants that are issued and outstanding at June 30, 2021: &#160;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"&gt;&lt;tr style="height:1pt;"&gt;&lt;td style="vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:32.95%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Year Issued&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:15.4%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Equity Instrument&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:18.06%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Warrants&#160;Outstanding&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.43%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Exercise&#160;Price&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.72%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Date&#160;of&#160;Expiration&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;2014&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt; Common Stock &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;1,227 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;122.12 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;8/26/2021&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;2015&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt; Common Stock &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;1,227 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;122.12 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;3/30/2022&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;2018&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt; Common Stock &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;4,199,995 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;12.00 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;6/21/2023&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;2019&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt; Common Stock &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;1,991,300 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;6.25 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;2/7/2024&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;2021&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt; Common Stock &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.06%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;2,990,136 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;0.35 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;12/14/2030&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Total&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:18.06%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;9,183,885 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Weighted average exercise price&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;6.99 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Weighted average life in years&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;&#160;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;4.55 &lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</us-gaap:ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock>
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      id="Tb_uYaaf0BLTE2iBK7GZOe2Qg">&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"&gt;&lt;b style="font-weight:bold;"&gt;8.&lt;/b&gt;&lt;b style="font-weight:bold;"&gt;&#160;&#160;&#160;&#160;Reserved for Future Issuance&lt;/b&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;The Company has reserved for future issuance the following shares of common stock:&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:79.99%;"&gt;&lt;tr style="height:1pt;"&gt;&lt;td style="vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.12%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.26%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:9pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:9pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.12%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;June&#160;30,&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.26%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;December&#160;31,&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:9pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:9pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-family:'Calibri','Helvetica','sans-serif';"&gt;&#160;&#160;&#160;&#160;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.12%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;2021&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-family:'Calibri','Helvetica','sans-serif';"&gt;&#160;&#160;&#160;&#160;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.26%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;2020&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New 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style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.26%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 6,193,749&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Options&#160;outstanding&#160;to&#160;purchase&#160;common&#160;stock&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.12%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;7,930,334 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.26%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 1,367,667&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Options&#160;available&#160;for&#160;future&#160;issuance&#160;to&#160;purchase&#160;common&#160;stock&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.12%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;1,697,308 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.26%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 1,936,173&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Shares&#160;reserved&#160;for&#160;the&#160;employee&#160;stock&#160;purchase&#160;plan&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.12%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;185,421 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.26%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 148,951&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Total&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.12%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;18,996,948 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.26%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 9,646,540&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;As of June 30, 2021, the Company also had 32,545 shares of Series X Preferred Stock outstanding. Each share of Series X Preferred Stock outstanding is convertible into 1,000 shares of the Company&#x2019;s common stock, subject to certain beneficial ownership limitations at the holder&#x2019;s option. See Note 1 &#x201c;Organization and Operations&lt;i style="font-style:italic;"&gt;&#x201d;&lt;/i&gt; for additional detail.&lt;/p&gt;</catb:CommonStockReservedForFutureIssuanceTextBlock>
    <us-gaap:ScheduleOfStockByClassTextBlock
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      id="Tb_sy-EOx1RdUyK_gmKWLjySw">&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:79.99%;"&gt;&lt;tr style="height:1pt;"&gt;&lt;td style="vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.12%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.26%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:9pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:9pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.12%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;June&#160;30,&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.26%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;December&#160;31,&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:9pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:9pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-family:'Calibri','Helvetica','sans-serif';"&gt;&#160;&#160;&#160;&#160;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.12%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;2021&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-family:'Calibri','Helvetica','sans-serif';"&gt;&#160;&#160;&#160;&#160;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.26%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;2020&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Warrants&#160;for&#160;the&#160;purchase&#160;of&#160;common&#160;stock&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.12%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;9,183,885 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.26%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 6,193,749&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Options&#160;outstanding&#160;to&#160;purchase&#160;common&#160;stock&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.12%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;7,930,334 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.26%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 1,367,667&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Options&#160;available&#160;for&#160;future&#160;issuance&#160;to&#160;purchase&#160;common&#160;stock&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.12%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;1,697,308 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.26%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 1,936,173&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Shares&#160;reserved&#160;for&#160;the&#160;employee&#160;stock&#160;purchase&#160;plan&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.12%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;185,421 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:11.26%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 148,951&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Total&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.12%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;18,996,948 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.26%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 9,646,540&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</us-gaap:ScheduleOfStockByClassTextBlock>
    <us-gaap:CommonStockCapitalSharesReservedForFutureIssuance
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    <us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock
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      id="Tb__gITmCfs2EOsFR3o3u_g-A">&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"&gt;&lt;b style="font-weight:bold;"&gt;9.&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;b style="font-weight:bold;"&gt;Stock Incentive Plans&lt;/b&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;A summary of the Company&#x2019;s stock option activity and related information follows:&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"&gt;&lt;tr style="height:1pt;"&gt;&lt;td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Weighted&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Average&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Weighted-&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Remaining&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Aggregate&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Average Exercise&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Contractual&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Intrinsic Value&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"&gt;&lt;b style="font-family:'Calibri','Helvetica','sans-serif';font-weight:bold;"&gt;&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.52%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Shares&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"&gt;&lt;b style="font-family:'Calibri','Helvetica','sans-serif';font-weight:bold;"&gt;&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;&#160;Price&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"&gt;&lt;b style="font-family:'Calibri','Helvetica','sans-serif';font-weight:bold;"&gt;&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt; Term (years)&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"&gt;&lt;b style="font-family:'Calibri','Helvetica','sans-serif';font-weight:bold;"&gt;&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;(in&#160;thousands)&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Outstanding&#160;at&#160;December&#160;31,&#160;2020&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 1,367,667&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;11.38&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;8.13&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;"&gt;Granted&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 6,447,000&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;2.74&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;"&gt;Assumed in Quellis Acquisition&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;332,494 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;0.29&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;"&gt;Cancelled&#160;or&#160;forfeited&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;(208,152)&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;8.71&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt; &lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt; &lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;"&gt;Expired&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.52%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;(8,675)&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;16.70&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Outstanding&#160;at&#160;June 30, 2021&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.52%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;7,930,334 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;3.96&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;9.44&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 662&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Vested&#160;and&#160;exercisable&#160;at&#160;June 30, 2021&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.52%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;770,141 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;14.07&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;7.31&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 207&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;There were no options exercised in the three or six months ended June 30, 2021 and 2020. The total grant date fair value of options vested for the three months ended June 30, 2021 and 2020 was $0.4 million and $0.3 million, respectively. The total grant date fair value of options vested for the six months ended June 30, 2021 and 2020 was $1.0 million and $0.8 million, respectively. The weighted-average grant date fair value of options granted to employees and non-employees for the three months ended June 30, 2021 and 2020 &lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"&gt;was $1.73 and $4.00, respectively. The weighted-average grant date fair value of options granted to employees and non-employees for the six months ended June 30, 2021 and 2020 was $1.73 and $3.64, respectively.&lt;/p&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"&gt;At June 30, 2021, the total unrecognized compensation expense related to unvested stock option awards was $12.7 million. The Company expects to recognize that cost over a weighted-average period of approximately 3.3 years. &lt;/p&gt;</us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock>
    <us-gaap:ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
      contextRef="Duration_1_1_2021_To_6_30_2021_smZbE7zFd0mAWLXZ_40dKg"
      id="Tb_7joV7Oa3Pky9IZInsm1sSg">&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"&gt;&lt;tr style="height:1pt;"&gt;&lt;td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"&gt;&lt;div style="bottom:0pt;position:absolute;width:100%;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:1pt;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Weighted&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Average&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Weighted-&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Remaining&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Aggregate&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Average Exercise&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Contractual&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Intrinsic Value&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="font-size:8pt;font-weight:bold;visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"&gt;&lt;b style="font-family:'Calibri','Helvetica','sans-serif';font-weight:bold;"&gt;&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.52%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;Shares&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"&gt;&lt;b style="font-family:'Calibri','Helvetica','sans-serif';font-weight:bold;"&gt;&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;&#160;Price&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"&gt;&lt;b style="font-family:'Calibri','Helvetica','sans-serif';font-weight:bold;"&gt;&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt; Term (years)&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"&gt;&lt;b style="font-family:'Calibri','Helvetica','sans-serif';font-weight:bold;"&gt;&#160;&#160;&#160;&#160;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"&gt;&lt;b style="font-weight:bold;"&gt;(in&#160;thousands)&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Outstanding&#160;at&#160;December&#160;31,&#160;2020&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 1,367,667&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;11.38&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;8.13&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; &#x2014;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;"&gt;Granted&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 6,447,000&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;2.74&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;"&gt;Assumed in Quellis Acquisition&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;332,494 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;0.29&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;"&gt;Cancelled&#160;or&#160;forfeited&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;(208,152)&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;8.71&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt; &lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt; &lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;"&gt;Expired&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.52%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"&gt;(8,675)&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;16.70&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Outstanding&#160;at&#160;June 30, 2021&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.52%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;7,930,334 &lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;3.96&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;9.44&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 662&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;Vested&#160;and&#160;exercisable&#160;at&#160;June 30, 2021&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&#160;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.52%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;770,141 &lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;14.07&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt;7.31&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;&lt;span style="visibility:hidden;"&gt;&#x200b;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"&gt;$&lt;/p&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"&gt;&lt;p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"&gt; 207&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</us-gaap:ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319772014936">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Document and Entity Information - shares<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
<th class="th" colspan="1"></th>
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<tr>
<th class="th"><div>Jun. 30, 2021</div></th>
<th class="th"><div>Jul. 30, 2021</div></th>
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<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_CoverAbstract', window );"><strong>Document and Entity Information</strong></a></td>
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<td class="text">&#160;<span></span>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityRegistrantName', window );">Entity Registrant Name</a></td>
<td class="text">Catabasis Pharmaceuticals,&#160;Inc.<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">26-3687168<span></span>
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<td class="text">100 High Street Floor 28<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">Boston<span></span>
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<td class="text">MA<span></span>
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<td class="text">02110<span></span>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_CityAreaCode', window );">City Area Code</a></td>
<td class="text">617<span></span>
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<td class="text">349-1971<span></span>
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<td class="text">Common Stock, $0.001 par value per share<span></span>
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<td class="text">CATB<span></span>
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<td class="text">NASDAQ<span></span>
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<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityInteractiveDataCurrent', window );">Entity Interactive Data Current</a></td>
<td class="text">Yes<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityFilerCategory', window );">Entity Filer Category</a></td>
<td class="text">Non-accelerated Filer<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntitySmallBusiness', window );">Entity Small Business</a></td>
<td class="text">true<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityEmergingGrowthCompany', window );">Entity Emerging Growth Company</a></td>
<td class="text">false<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityShellCompany', window );">Entity Shell Company</a></td>
<td class="text">false<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityCommonStockSharesOutstanding', window );">Entity Common Stock, Shares Outstanding</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">76,948,803<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityCentralIndexKey', window );">Entity Central Index Key</a></td>
<td class="text">0001454789<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_CurrentFiscalYearEndDate', window );">Current Fiscal Year End Date</a></td>
<td class="text">--12-31<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_DocumentFiscalYearFocus', window );">Document Fiscal Year Focus</a></td>
<td class="text">2021<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_DocumentFiscalPeriodFocus', window );">Document Fiscal Period Focus</a></td>
<td class="text">Q2<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_AmendmentFlag', window );">Amendment Flag</a></td>
<td class="text">false<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_AmendmentFlag">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_AmendmentFlag</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_CityAreaCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Area code of city</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_CityAreaCode</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_CoverAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Cover page.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_CoverAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_CurrentFiscalYearEndDate">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>End date of current fiscal year in the format --MM-DD.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_CurrentFiscalYearEndDate</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:gMonthDayItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
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</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentFiscalPeriodFocus">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Fiscal period values are FY, Q1, Q2, and Q3.  1st, 2nd and 3rd quarter 10-Q or 10-QT statements have value Q1, Q2, and Q3 respectively, with 10-K, 10-KT or other fiscal year statements having FY.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentFiscalPeriodFocus</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>dei:fiscalPeriodItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentFiscalYearFocus">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>This is focus fiscal year of the document report in YYYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentFiscalYearFocus</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:gYearItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
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</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentPeriodEndDate">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented.  If there is no historical data in the report, use the filing date. The format of the date is YYYY-MM-DD.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentPeriodEndDate</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:dateItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentQuarterlyReport">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true only for a form used as an quarterly report.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Form 10-Q<br> -Number 240<br> -Section 308<br> -Subsection a<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentQuarterlyReport</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentTransitionReport">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true only for a form used as a transition report.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Forms 10-K, 10-Q, 20-F<br> -Number 240<br> -Section 13<br> -Subsection a-1<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentTransitionReport</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentType">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentType</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:submissionTypeItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressAddressLine1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Address Line 1 such as Attn, Building Name, Street Name</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressAddressLine1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressCityOrTown">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Name of the City or Town</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressCityOrTown</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressPostalZipCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Code for the postal or zip code</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressPostalZipCode</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressStateOrProvince">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Name of the state or province.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressStateOrProvince</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:stateOrProvinceItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityCentralIndexKey">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityCentralIndexKey</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:centralIndexKeyItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityCommonStockSharesOutstanding">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityCommonStockSharesOutstanding</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityCurrentReportingStatus">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Indicate 'Yes' or 'No' whether registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that registrants were required to file such reports), and (2) have been subject to such filing requirements for the past 90 days. This information should be based on the registrant's current or most recent filing containing the related disclosure.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityCurrentReportingStatus</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:yesNoItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityEmergingGrowthCompany">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Indicate if registrant meets the emerging growth company criteria.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityEmergingGrowthCompany</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityFileNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityFileNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:fileNumberItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityFilerCategory">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Indicate whether the registrant is one of the following: Large Accelerated Filer, Accelerated Filer, Non-accelerated Filer. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityFilerCategory</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:filerCategoryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityIncorporationStateCountryCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Two-character EDGAR code representing the state or country of incorporation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityIncorporationStateCountryCode</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:edgarStateCountryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityInteractiveDataCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation S-T<br> -Number 232<br> -Section 405<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityInteractiveDataCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:yesNoItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityRegistrantName">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityRegistrantName</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityShellCompany">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the registrant is a shell company as defined in Rule 12b-2 of the Exchange Act.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityShellCompany</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntitySmallBusiness">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Indicates that the company is a Smaller Reporting Company (SRC).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntitySmallBusiness</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityTaxIdentificationNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityTaxIdentificationNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:employerIdItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_LocalPhoneNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Local phone number for entity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_LocalPhoneNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_Security12bTitle">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Title of a 12(b) registered security.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection b<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_Security12bTitle</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:securityTitleItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_SecurityExchangeName">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Name of the Exchange on which a security is registered.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection d1-1<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_SecurityExchangeName</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:edgarExchangeCodeItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_TradingSymbol">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Trading symbol of an instrument as listed on an exchange.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_TradingSymbol</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:tradingSymbolItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319774539160">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Condensed Consolidated Balance Sheets - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th"><div>Jun. 30, 2021</div></th>
<th class="th"><div>Dec. 31, 2020</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetsCurrentAbstract', window );"><strong>Current assets:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashAndCashEquivalentsAtCarryingValue', window );">Cash and cash equivalents</a></td>
<td class="nump">$ 139,520<span></span>
</td>
<td class="nump">$ 24,930<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShortTermInvestments', window );">Short-term investments</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">20,000<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PrepaidExpenseAndOtherAssetsCurrent', window );">Prepaid expenses and other current assets</a></td>
<td class="nump">532<span></span>
</td>
<td class="nump">1,395<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetsCurrent', window );">Total current assets</a></td>
<td class="nump">140,052<span></span>
</td>
<td class="nump">46,325<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OperatingLeaseRightOfUseAsset', window );">Right-of-use asset</a></td>
<td class="nump">717<span></span>
</td>
<td class="nump">966<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherAssetsNoncurrent', window );">Other assets</a></td>
<td class="nump">176<span></span>
</td>
<td class="nump">165<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_Assets', window );">Total assets</a></td>
<td class="nump">140,945<span></span>
</td>
<td class="nump">47,456<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LiabilitiesCurrentAbstract', window );"><strong>Current liabilities:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccountsPayableCurrent', window );">Accounts payable</a></td>
<td class="nump">619<span></span>
</td>
<td class="nump">1,544<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccruedLiabilitiesCurrent', window );">Accrued expenses</a></td>
<td class="nump">2,714<span></span>
</td>
<td class="nump">4,197<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OperatingLeaseLiabilityCurrent', window );">Current portion of operating lease liabilities</a></td>
<td class="nump">655<span></span>
</td>
<td class="nump">649<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LiabilitiesCurrent', window );">Total current liabilities</a></td>
<td class="nump">3,988<span></span>
</td>
<td class="nump">6,390<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OperatingLeaseLiabilityNoncurrent', window );">Long-term portion of operating lease liabilities</a></td>
<td class="nump">58<span></span>
</td>
<td class="nump">397<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_Liabilities', window );">Total liabilities</a></td>
<td class="nump">4,046<span></span>
</td>
<td class="nump">6,787<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommitmentsAndContingencies', window );">Commitments</a></td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquityAbstract', window );"><strong>Stockholders' equity:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockValue', window );">Common stock, $0.001 par value per share, 150,000,000 shares authorized; 76,948,803 and 20,084,337 shares issued and outstanding at June 30, 2021 and December 31, 2020, respectively</a></td>
<td class="nump">77<span></span>
</td>
<td class="nump">20<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AdditionalPaidInCapital', window );">Additional paid-in capital</a></td>
<td class="nump">475,499<span></span>
</td>
<td class="nump">301,546<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RetainedEarningsAccumulatedDeficit', window );">Accumulated deficit</a></td>
<td class="num">(438,447)<span></span>
</td>
<td class="num">(260,897)<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquity', window );">Total stockholders' equity</a></td>
<td class="nump">136,899<span></span>
</td>
<td class="nump">40,669<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LiabilitiesAndStockholdersEquity', window );">Total liabilities and stockholders' equity</a></td>
<td class="nump">140,945<span></span>
</td>
<td class="nump">$ 47,456<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementClassOfStockAxis=catb_SeriesXRedeemableConvertiblePreferredStockMember', window );">Series X redeemable convertible preferred stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquityAbstract', window );"><strong>Stockholders' equity:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockValue', window );">Preferred stock, value</a></td>
<td class="nump">$ 99,770<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccountsPayableCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.19(a))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccountsPayableCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccruedLiabilitiesCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.20)<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccruedLiabilitiesCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AdditionalPaidInCapital">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 65<br> -Paragraph 15<br> -Subparagraph (g)(2)<br> -URI http://asc.fasb.org/extlink&amp;oid=121322162&amp;loc=SL121327923-165333<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(30)(a)(1))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AdditionalPaidInCapital</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_Assets">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(11))<br> -URI http://asc.fasb.org/extlink&amp;oid=120398452&amp;loc=d3e534808-122878<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(g)(1)(ii))<br> -URI http://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 825<br> -SubTopic 10<br> -Section 50<br> -Paragraph 28<br> -Subparagraph (f)<br> -URI http://asc.fasb.org/extlink&amp;oid=75031198&amp;loc=d3e14064-108612<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 810<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (bb)<br> -URI http://asc.fasb.org/extlink&amp;oid=121559654&amp;loc=d3e5710-111685<br><br>Reference 5: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 810<br> -SubTopic 10<br> -Section 45<br> -Paragraph 25<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=116870748&amp;loc=SL6758485-165988<br><br>Reference 6: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (d)<br> -URI http://asc.fasb.org/extlink&amp;oid=120311839&amp;loc=d3e8933-108599<br><br>Reference 7: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -URI http://asc.fasb.org/extlink&amp;oid=120311839&amp;loc=d3e8736-108599<br><br>Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(a)(12))<br> -URI http://asc.fasb.org/extlink&amp;oid=120400017&amp;loc=d3e572229-122910<br><br>Reference 9: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 323<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=114001798&amp;loc=d3e33918-111571<br><br>Reference 10: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 30<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=120311839&amp;loc=d3e8906-108599<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_Assets</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AssetsCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=121566466&amp;loc=d3e6801-107765<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 825<br> -SubTopic 10<br> -Section 50<br> -Paragraph 28<br> -Subparagraph (f)<br> -URI http://asc.fasb.org/extlink&amp;oid=75031198&amp;loc=d3e14064-108612<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 810<br> -SubTopic 10<br> -Section 45<br> -Paragraph 25<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=116870748&amp;loc=SL6758485-165988<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 323<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=114001798&amp;loc=d3e33918-111571<br><br>Reference 5: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 810<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (bb)<br> -URI http://asc.fasb.org/extlink&amp;oid=121559654&amp;loc=d3e5710-111685<br><br>Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.9)<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 7: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(g)(1)(ii))<br> -URI http://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br><br>Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=121566466&amp;loc=d3e6676-107765<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AssetsCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AssetsCurrentAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AssetsCurrentAbstract</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
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</div></td></tr>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 4<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3044-108585<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=121566466&amp;loc=d3e6676-107765<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.1)<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CashAndCashEquivalentsAtCarryingValue</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.25)<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03.(a),19)<br> -URI http://asc.fasb.org/extlink&amp;oid=120400017&amp;loc=d3e572229-122910<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03.17)<br> -URI http://asc.fasb.org/extlink&amp;oid=120398452&amp;loc=d3e534808-122878<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 450<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=121557415&amp;loc=d3e14326-108349<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommitmentsAndContingencies</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommonStockValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommonStockValue</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_Liabilities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 810<br> -SubTopic 10<br> -Section 45<br> -Paragraph 25<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=116870748&amp;loc=SL6758485-165988<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 825<br> -SubTopic 10<br> -Section 50<br> -Paragraph 28<br> -Subparagraph (f)<br> -URI http://asc.fasb.org/extlink&amp;oid=75031198&amp;loc=d3e14064-108612<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 810<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (bb)<br> -URI http://asc.fasb.org/extlink&amp;oid=121559654&amp;loc=d3e5710-111685<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.19-26)<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 5: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 810<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=121559654&amp;loc=d3e5710-111685<br><br>Reference 6: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 323<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=114001798&amp;loc=d3e33918-111571<br><br>Reference 7: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 30<br> -Subparagraph (d)<br> -URI http://asc.fasb.org/extlink&amp;oid=120311839&amp;loc=d3e8906-108599<br><br>Reference 8: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(g)(1)(ii))<br> -URI http://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_Liabilities</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LiabilitiesAndStockholdersEquity">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 323<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=114001798&amp;loc=d3e33918-111571<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(23))<br> -URI http://asc.fasb.org/extlink&amp;oid=120398452&amp;loc=d3e534808-122878<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(a)(25))<br> -URI http://asc.fasb.org/extlink&amp;oid=120400017&amp;loc=d3e572229-122910<br><br>Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(g)(1)(ii))<br> -URI http://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br><br>Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(32))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 825<br> -SubTopic 10<br> -Section 50<br> -Paragraph 28<br> -Subparagraph (f)<br> -URI http://asc.fasb.org/extlink&amp;oid=75031198&amp;loc=d3e14064-108612<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LiabilitiesAndStockholdersEquity</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LiabilitiesCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 810<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (bb)<br> -URI http://asc.fasb.org/extlink&amp;oid=121559654&amp;loc=d3e5710-111685<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 825<br> -SubTopic 10<br> -Section 50<br> -Paragraph 28<br> -Subparagraph (f)<br> -URI http://asc.fasb.org/extlink&amp;oid=75031198&amp;loc=d3e14064-108612<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 810<br> -SubTopic 10<br> -Section 45<br> -Paragraph 25<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=116870748&amp;loc=SL6758485-165988<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(g)(1)(ii))<br> -URI http://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br><br>Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.21)<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 6: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 810<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=121559654&amp;loc=d3e5710-111685<br><br>Reference 7: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 323<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=114001798&amp;loc=d3e33918-111571<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LiabilitiesCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LiabilitiesCurrentAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LiabilitiesCurrentAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OperatingLeaseLiabilityCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 45<br> -Paragraph 1<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=121603541&amp;loc=SL77918627-209977<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OperatingLeaseLiabilityCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OperatingLeaseLiabilityNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 45<br> -Paragraph 1<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=121603541&amp;loc=SL77918627-209977<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OperatingLeaseLiabilityNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OperatingLeaseRightOfUseAsset">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of lessee's right to use underlying asset under operating lease.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 45<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=121603541&amp;loc=SL77918627-209977<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OperatingLeaseRightOfUseAsset</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherAssetsNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of noncurrent assets classified as other.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.17)<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherAssetsNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PreferredStockValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PreferredStockValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PrepaidExpenseAndOtherAssetsCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(7))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=121566466&amp;loc=d3e6676-107765<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(8))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PrepaidExpenseAndOtherAssetsCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RetainedEarningsAccumulatedDeficit">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The cumulative amount of the reporting entity's undistributed earnings or deficit.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(30)(a)(3))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 65<br> -Paragraph 15<br> -Subparagraph (g)(2)<br> -URI http://asc.fasb.org/extlink&amp;oid=121322162&amp;loc=SL121327923-165333<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(a)(23)(a)(4))<br> -URI http://asc.fasb.org/extlink&amp;oid=120400017&amp;loc=d3e572229-122910<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 40<br> -Section 65<br> -Paragraph 2<br> -Subparagraph (h)(2)<br> -URI http://asc.fasb.org/extlink&amp;oid=121370832&amp;loc=SL117420844-207641<br><br>Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI http://asc.fasb.org/extlink&amp;oid=120397183&amp;loc=d3e187085-122770<br><br>Reference 6: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 40<br> -Section 65<br> -Paragraph 2<br> -Subparagraph (g)(2)(i)<br> -URI http://asc.fasb.org/extlink&amp;oid=121370832&amp;loc=SL117420844-207641<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RetainedEarningsAccumulatedDeficit</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(4))<br> -URI http://asc.fasb.org/extlink&amp;oid=120398452&amp;loc=d3e534808-122878<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(5))<br> -URI http://asc.fasb.org/extlink&amp;oid=120398452&amp;loc=d3e534808-122878<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(a)(1)(g))<br> -URI http://asc.fasb.org/extlink&amp;oid=120400017&amp;loc=d3e572229-122910<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(2))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(g)(1)(ii))<br> -URI http://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 310<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SAB Topic 4.E)<br> -URI http://asc.fasb.org/extlink&amp;oid=27010918&amp;loc=d3e74512-122707<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(31))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(30))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 825<br> -SubTopic 10<br> -Section 50<br> -Paragraph 28<br> -Subparagraph (f)<br> -URI http://asc.fasb.org/extlink&amp;oid=75031198&amp;loc=d3e14064-108612<br><br>Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 323<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=114001798&amp;loc=d3e33918-111571<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319774951336">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares<br></strong></div></th>
<th class="th"><div>Jun. 30, 2021</div></th>
<th class="th"><div>Dec. 31, 2020</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockParOrStatedValuePerShare', window );">Preferred stock, par value (in dollars per share)</a></td>
<td class="nump">$ 0.001<span></span>
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<td class="text">&#160;<span></span>
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<td class="nump">5,000,000<span></span>
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<td class="text">&#160;<span></span>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockParOrStatedValuePerShare', window );">Common stock, par value (in dollars per share)</a></td>
<td class="nump">$ 0.001<span></span>
</td>
<td class="nump">$ 0.001<span></span>
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<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockSharesAuthorized', window );">Common stock, authorized (in shares)</a></td>
<td class="nump">150,000,000<span></span>
</td>
<td class="nump">150,000,000<span></span>
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<td class="nump">76,948,803<span></span>
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<td class="nump">20,084,337<span></span>
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<td class="nump">76,948,803<span></span>
</td>
<td class="nump">20,084,337<span></span>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementClassOfStockAxis=catb_SeriesXRedeemableConvertiblePreferredStockMember', window );">Series X redeemable convertible preferred stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
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<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockParOrStatedValuePerShare', window );">Preferred stock, par value (in dollars per share)</a></td>
<td class="nump">$ 0.001<span></span>
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<td class="text">&#160;<span></span>
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<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockSharesAuthorized', window );">Preferred stock, authorized (in shares)</a></td>
<td class="nump">37,848<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
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<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockSharesIssued', window );">Preferred stock, issued (in shares)</a></td>
<td class="nump">32,545<span></span>
</td>
<td class="nump">0<span></span>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockSharesOutstanding', window );">Preferred stock, outstanding (in shares)</a></td>
<td class="nump">32,545<span></span>
</td>
<td class="nump">0<span></span>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Face amount or stated value per share of common stock.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td>num:perShareItemType</td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The maximum number of common shares permitted to be issued by an entity's charter and bylaws.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=109259400&amp;loc=d3e21463-112644<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PreferredStockParOrStatedValuePerShare</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PreferredStockSharesAuthorized">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PreferredStockSharesAuthorized</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PreferredStockSharesIssued">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PreferredStockSharesIssued</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PreferredStockSharesOutstanding">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PreferredStockSharesOutstanding</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementClassOfStockAxis=catb_SeriesXRedeemableConvertiblePreferredStockMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementClassOfStockAxis=catb_SeriesXRedeemableConvertiblePreferredStockMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319778588488">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Condensed Consolidated Statements of Operations - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">3 Months Ended</th>
<th class="th" colspan="2">6 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Jun. 30, 2021</div></th>
<th class="th"><div>Jun. 30, 2020</div></th>
<th class="th"><div>Jun. 30, 2021</div></th>
<th class="th"><div>Jun. 30, 2020</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OperatingExpensesAbstract', window );"><strong>Operating expenses:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ResearchAndDevelopmentExpense', window );">Research and development</a></td>
<td class="nump">$ 3,478<span></span>
</td>
<td class="nump">$ 6,750<span></span>
</td>
<td class="nump">$ 6,071<span></span>
</td>
<td class="nump">$ 12,039<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_GeneralAndAdministrativeExpense', window );">General and administrative</a></td>
<td class="nump">4,008<span></span>
</td>
<td class="nump">2,803<span></span>
</td>
<td class="nump">6,881<span></span>
</td>
<td class="nump">5,555<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_AcquiredInProcessResearchAndDevelopment', window );">Acquired in-process research and development</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">164,617<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OperatingExpenses', window );">Total operating expenses</a></td>
<td class="nump">7,486<span></span>
</td>
<td class="nump">9,553<span></span>
</td>
<td class="nump">177,569<span></span>
</td>
<td class="nump">17,594<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OperatingIncomeLoss', window );">Loss from operations</a></td>
<td class="num">(7,486)<span></span>
</td>
<td class="num">(9,553)<span></span>
</td>
<td class="num">(177,569)<span></span>
</td>
<td class="num">(17,594)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NonoperatingIncomeExpenseAbstract', window );"><strong>Other income (expense):</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InvestmentIncomeInterest', window );">Interest and investment income</a></td>
<td class="nump">40<span></span>
</td>
<td class="nump">60<span></span>
</td>
<td class="nump">53<span></span>
</td>
<td class="nump">227<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherNonoperatingIncomeExpense', window );">Other expense, net</a></td>
<td class="num">(20)<span></span>
</td>
<td class="num">(15)<span></span>
</td>
<td class="num">(34)<span></span>
</td>
<td class="num">(93)<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NonoperatingIncomeExpense', window );">Total other income, net</a></td>
<td class="nump">20<span></span>
</td>
<td class="nump">45<span></span>
</td>
<td class="nump">19<span></span>
</td>
<td class="nump">134<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetIncomeLoss', window );">Net loss</a></td>
<td class="num">(7,466)<span></span>
</td>
<td class="num">(9,508)<span></span>
</td>
<td class="num">(177,550)<span></span>
</td>
<td class="num">(17,460)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_DividendOnConvertiblePreferredStockRelatedToBeneficialConversionFeatureAndIssuanceCosts', window );">Dividend on convertible preferred stock related to beneficial conversion feature and issuance costs</a></td>
<td class="num">(24,437)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="num">(24,437)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic', window );">Net loss attributable to common shareholders</a></td>
<td class="num">$ (31,903)<span></span>
</td>
<td class="num">$ (9,508)<span></span>
</td>
<td class="num">$ (201,987)<span></span>
</td>
<td class="num">$ (17,460)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EarningsPerShareBasicAndDiluted', window );">Net loss per share - basic and diluted</a></td>
<td class="num">$ (0.89)<span></span>
</td>
<td class="num">$ (0.53)<span></span>
</td>
<td class="num">$ (6.93)<span></span>
</td>
<td class="num">$ (1.03)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted', window );">Weighted-average common shares outstanding used in net loss per share - basic and diluted</a></td>
<td class="nump">35,880,580<span></span>
</td>
<td class="nump">17,967,495<span></span>
</td>
<td class="nump">29,167,672<span></span>
</td>
<td class="nump">16,933,079<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_AcquiredInProcessResearchAndDevelopment">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount of acquired in-process research and development expense.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_AcquiredInProcessResearchAndDevelopment</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_DividendOnConvertiblePreferredStockRelatedToBeneficialConversionFeatureAndIssuanceCosts">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount of dividend on convertible preferred stock related to beneficial conversion feature and issuance costs</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_DividendOnConvertiblePreferredStockRelatedToBeneficialConversionFeatureAndIssuanceCosts</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EarningsPerShareBasicAndDiluted">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements.  Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period.  Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 45<br> -Paragraph 7<br> -URI http://asc.fasb.org/extlink&amp;oid=121326447&amp;loc=d3e1337-109256<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EarningsPerShareBasicAndDiluted</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_GeneralAndAdministrativeExpense">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.4)<br> -URI http://asc.fasb.org/extlink&amp;oid=120395209&amp;loc=SL114868664-224227<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_GeneralAndAdministrativeExpense</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_InvestmentIncomeInterest">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.7(b))<br> -URI http://asc.fasb.org/extlink&amp;oid=120395209&amp;loc=SL114868664-224227<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=120311839&amp;loc=d3e8736-108599<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_InvestmentIncomeInterest</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetIncomeLoss">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1A<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=121641772&amp;loc=SL7669619-108580<br><br>Reference 2: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 31<br> -URI http://asc.fasb.org/extlink&amp;oid=120311839&amp;loc=d3e8924-108599<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 250<br> -SubTopic 10<br> -Section 50<br> -Paragraph 11<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=109234566&amp;loc=d3e22694-107794<br><br>Reference 4: 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-SubTopic 10<br> -Section 50<br> -Paragraph 30<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=120311839&amp;loc=d3e8906-108599<br><br>Reference 18: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 250<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=109234566&amp;loc=d3e22583-107794<br><br>Reference 19: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(g)(1)(ii))<br> -URI http://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br><br>Reference 20: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 45<br> -Paragraph 60B<br> -Subparagraph (a)<br> -URI 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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetIncomeLoss</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 250<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -URI http://asc.fasb.org/extlink&amp;oid=109234566&amp;loc=d3e22595-107794<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 45<br> -Paragraph 10<br> -URI http://asc.fasb.org/extlink&amp;oid=121326447&amp;loc=d3e1448-109256<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 250<br> -SubTopic 10<br> -Section 50<br> -Paragraph 11<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=109234566&amp;loc=d3e22694-107794<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 45<br> -Paragraph 11<br> -URI http://asc.fasb.org/extlink&amp;oid=121326447&amp;loc=d3e1377-109256<br><br>Reference 5: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=6371337&amp;loc=d3e3550-109257<br><br>Reference 6: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -URI http://asc.fasb.org/extlink&amp;oid=120311839&amp;loc=d3e8736-108599<br><br>Reference 7: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 250<br> -SubTopic 10<br> -Section 50<br> -Paragraph 11<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=109234566&amp;loc=d3e22694-107794<br><br>Reference 8: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 45<br> -Paragraph 60B<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=121326447&amp;loc=SL5780133-109256<br><br>Reference 9: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (f)<br> -URI http://asc.fasb.org/extlink&amp;oid=120311839&amp;loc=d3e8933-108599<br><br>Reference 10: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 31<br> -URI http://asc.fasb.org/extlink&amp;oid=120311839&amp;loc=d3e8924-108599<br><br>Reference 11: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 30<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=120311839&amp;loc=d3e8906-108599<br><br>Reference 12: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 250<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=109234566&amp;loc=d3e22583-107794<br><br>Reference 13: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=120311839&amp;loc=d3e8933-108599<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NonoperatingIncomeExpense">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.7)<br> -URI http://asc.fasb.org/extlink&amp;oid=120395209&amp;loc=SL114868664-224227<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NonoperatingIncomeExpense</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NonoperatingIncomeExpenseAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NonoperatingIncomeExpenseAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OperatingExpenses">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OperatingExpenses</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OperatingExpensesAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OperatingExpensesAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
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<td><strong> Balance Type:</strong></td>
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<tr>
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</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OperatingIncomeLoss">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The net result for the period of deducting operating expenses from operating revenues.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 31<br> -URI http://asc.fasb.org/extlink&amp;oid=120311839&amp;loc=d3e8924-108599<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 30<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=120311839&amp;loc=d3e8906-108599<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=120311839&amp;loc=d3e8933-108599<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (f)<br> -URI http://asc.fasb.org/extlink&amp;oid=120311839&amp;loc=d3e8933-108599<br><br>Reference 5: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -URI http://asc.fasb.org/extlink&amp;oid=120311839&amp;loc=d3e8736-108599<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OperatingIncomeLoss</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
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<td><strong> Balance Type:</strong></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherNonoperatingIncomeExpense">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of income (expense) related to nonoperating activities, classified as other.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.9)<br> -URI http://asc.fasb.org/extlink&amp;oid=120395209&amp;loc=SL114868664-224227<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherNonoperatingIncomeExpense</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
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<td><strong> Balance Type:</strong></td>
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<td><strong> Period Type:</strong></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ResearchAndDevelopmentExpense">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 985<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6501960&amp;loc=d3e128462-111756<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 730<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6420194&amp;loc=d3e21568-108373<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319779230664">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Condensed Consolidated Statements of Comprehensive Loss - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">3 Months Ended</th>
<th class="th" colspan="2">6 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Jun. 30, 2021</div></th>
<th class="th"><div>Jun. 30, 2020</div></th>
<th class="th"><div>Jun. 30, 2021</div></th>
<th class="th"><div>Jun. 30, 2020</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract', window );"><strong>Condensed Consolidated Statements of Comprehensive Loss</strong></a></td>
<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetIncomeLoss', window );">Net loss</a></td>
<td class="num">$ (7,466)<span></span>
</td>
<td class="num">$ (9,508)<span></span>
</td>
<td class="num">$ (177,550)<span></span>
</td>
<td class="num">$ (17,460)<span></span>
</td>
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<tr class="re">
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
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<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax', window );">Gain on short-term investments</a></td>
<td class="text">&#160;<span></span>
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<td class="nump">16<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1<span></span>
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<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent', window );">Total other comprehensive gain:</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">16<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1<span></span>
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<tr class="rou">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ComprehensiveIncomeNetOfTax', window );">Comprehensive loss</a></td>
<td class="num">$ (7,466)<span></span>
</td>
<td class="num">$ (9,492)<span></span>
</td>
<td class="num">$ (177,550)<span></span>
</td>
<td class="num">$ (17,459)<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ComprehensiveIncomeNetOfTax">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 220<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-04(22))<br> -URI http://asc.fasb.org/extlink&amp;oid=120400993&amp;loc=SL114874131-224263<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03(24))<br> -URI http://asc.fasb.org/extlink&amp;oid=120395209&amp;loc=SL114868664-224227<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section 45<br> -Paragraph 5<br> -URI http://asc.fasb.org/extlink&amp;oid=121641772&amp;loc=d3e557-108580<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 220<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-04(26))<br> -URI http://asc.fasb.org/extlink&amp;oid=120399700&amp;loc=SL114874048-224260<br><br>Reference 5: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1B<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=121641772&amp;loc=SL7669625-108580<br><br>Reference 6: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1A<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=121641772&amp;loc=SL7669619-108580<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ComprehensiveIncomeNetOfTax</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<td>xbrli:monetaryItemType</td>
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<td><strong> Balance Type:</strong></td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.</p></div>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetIncomeLoss</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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</table>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount, after tax and adjustment, of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section 45<br> -Paragraph 10A<br> -Subparagraph (f)<br> -URI http://asc.fasb.org/extlink&amp;oid=121641772&amp;loc=SL7669646-108580<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section 45<br> -Paragraph 11<br> -URI http://asc.fasb.org/extlink&amp;oid=121641772&amp;loc=d3e637-108580<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section 45<br> -Paragraph 10A<br> -Subparagraph (e)<br> -URI http://asc.fasb.org/extlink&amp;oid=121641772&amp;loc=SL7669646-108580<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Balance Type:</strong></td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount after tax of other comprehensive income (loss) attributable to parent entity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1B<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=121641772&amp;loc=SL7669625-108580<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 810<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1A<br> -Subparagraph (c)(3)<br> -URI http://asc.fasb.org/extlink&amp;oid=109239629&amp;loc=SL4573702-111684<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 810<br> -SubTopic 10<br> -Section 45<br> -Paragraph 20<br> -URI http://asc.fasb.org/extlink&amp;oid=108774443&amp;loc=SL4569643-111683<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1A<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=121641772&amp;loc=SL7669619-108580<br><br>Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 810<br> -SubTopic 10<br> -Section 45<br> -Paragraph 19<br> -URI http://asc.fasb.org/extlink&amp;oid=108774443&amp;loc=SL4569616-111683<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
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<td><strong> Balance Type:</strong></td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
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<td style="white-space:nowrap;">us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract</td>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319774794440">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Condensed Consolidated Statements of Redeemable Convertible Preferred Stock - Series X redeemable convertible preferred stock - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="1">3 Months Ended</th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Jun. 30, 2021</div></th>
<th class="th"><div>Jun. 30, 2021</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInTemporaryEquityRollForward', window );"><strong>Series X redeemable convertible preferred stock</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_TemporaryEquityCarryingAmountAttributableToParent', window );">Balance, beginning of period</a></td>
<td class="nump">$ 240,881<span></span>
</td>
<td class="nump">$ 0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_TemporaryEquitySharesIssued', window );">Balance, beginning of period (in shares)</a></td>
<td class="nump">86,077<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodValueNewIssues', window );">Issuance of preferred stock in a private offering of public equity, net of issuance costs</a></td>
<td class="text">&#160;<span></span>
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<td class="nump">$ 84,696<span></span>
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<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodSharesNewIssues', window );">Issuance of preferred stock in a private offering of public equity, net of issuance costs (in shares)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">35,573<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_TemporaryEquityStockIssuedInAcquisitionValueNewIssues', window );">Issuance of preferred stock upon acquisition of Quellis</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 156,185<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_TemporaryEquityStockIssuedInAcquisitionSharesNewIssues', window );">Issuance of preferred stock upon acquisition of Quellis (in shares)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">50,504<span></span>
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</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_ReclassificationOfPreferredStockToEquity', window );">Reclassification of preferred stock to permanent equity</a></td>
<td class="num">$ (240,881)<span></span>
</td>
<td class="num">$ (240,881)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_ReclassificationOfPreferredStockToEquityShares', window );">Reclassification of preferred stock to permanent equity (in shares)</a></td>
<td class="num">(86,077)<span></span>
</td>
<td class="num">(86,077)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_TemporaryEquityCarryingAmountAttributableToParent', window );">Balance, end of period</a></td>
<td class="nump">$ 0<span></span>
</td>
<td class="nump">$ 0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_TemporaryEquitySharesIssued', window );">Balance, end of period (in shares)</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">0<span></span>
</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount of preferred stock reclassified to equity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_ReclassificationOfPreferredStockToEquity</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The number of preferred shares reclassified to equity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<td><strong> Balance Type:</strong></td>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_TemporaryEquityStockIssuedInAcquisitionSharesNewIssues">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of new shares classified as temporary equity issued in an acquisition during the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_TemporaryEquityStockIssuedInAcquisitionSharesNewIssues</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_TemporaryEquityStockIssuedInAcquisitionValueNewIssues">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Value of new stock classified as temporary equity issued in an acquisition during the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_TemporaryEquityStockIssuedInAcquisitionValueNewIssues</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodSharesNewIssues">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of new shares classified as temporary equity issued in a private offering during the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodSharesNewIssues</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodValueNewIssues">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Value of new stock classified as temporary equity issued in a private offering during the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodValueNewIssues</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>credit</td>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInTemporaryEquityRollForward">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInTemporaryEquityRollForward</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
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</table></div>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_TemporaryEquityCarryingAmountAttributableToParent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Carrying amount, attributable to parent, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_TemporaryEquityCarryingAmountAttributableToParent</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>credit</td>
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<td><strong> Period Type:</strong></td>
<td>instant</td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_TemporaryEquitySharesIssued">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The number of securities classified as temporary equity that have been sold (or granted) to the entity's shareholders. Securities issued include securities outstanding and securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(27)(b))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_TemporaryEquitySharesIssued</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementClassOfStockAxis=catb_SeriesXRedeemableConvertiblePreferredStockMember</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319766757752">
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<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Condensed Consolidated Statements of Stockholders' Equity - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th">
<div>Preferred Stock </div>
<div>Series X redeemable convertible preferred stock</div>
</th>
<th class="th"><div>Common Stock</div></th>
<th class="th"><div>Additional paid-in capital</div></th>
<th class="th"><div>Accumulated Deficit</div></th>
<th class="th"><div>Accumulated other comprehensive loss</div></th>
<th class="th"><div>Total</div></th>
</tr>
<tr class="rc">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquity', window );">Balance, beginning of period at Dec. 31, 2019</a></td>
<td class="nump">$ 0<span></span>
</td>
<td class="nump">$ 12<span></span>
</td>
<td class="nump">$ 259,305<span></span>
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<td class="num">$ (223,597)<span></span>
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<td class="nump">$ 0<span></span>
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<td class="text">&#160;<span></span>
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</tr>
<tr class="rc">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockSharesIssued', window );">Balance, beginning of period (in shares) at Dec. 31, 2019</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">12,433,600<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward', window );"><strong>Increase (Decrease) in Shareholders' Equity</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_AdjustmentsToAdditionalPaidInCapitalCommonStockIssuedInPublicOffering', window );">Issuance of common stock in a public offering, net of issuance costs</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">24,554<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_StockIssuedDuringPeriodValueNewIssuesAtMarketOfferings', window );">Issuance of common stock for at-the-market offerings</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 2<span></span>
</td>
<td class="nump">7,328<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_StockIssuedDuringPeriodSharesNewIssuesAtMarketOfferings', window );">Issuance of common stock for at-the-market offerings (in shares)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1,100,001<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_IssuanceOfCommonStockAndWarrantsInPublicOfferingsValueNetOfIssuanceCosts', window );">Issuance of common stock and warrants in public offerings</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 5<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_IssuanceOfCommonStockAndWarrantsInPublicOfferingsShares', window );">Issuance of common stock and warrants in public offerings (in shares)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">5,290,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue', window );">Stock-based compensation expense</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">710<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
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<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetIncomeLoss', window );">Net loss</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="num">(17,460)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="num">$ (17,460)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax', window );">Realized loss on short-term investments</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1<span></span>
</td>
<td class="nump">1<span></span>
</td>
</tr>
<tr class="rc">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquity', window );">Balance, end of period at Jun. 30, 2020</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 19<span></span>
</td>
<td class="nump">291,897<span></span>
</td>
<td class="num">(241,057)<span></span>
</td>
<td class="nump">1<span></span>
</td>
<td class="nump">50,860<span></span>
</td>
</tr>
<tr class="rc">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockSharesIssued', window );">Balance, end of period (in shares) at Jun. 30, 2020</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">18,823,601<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rc">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquity', window );">Balance, beginning of period at Mar. 31, 2020</a></td>
<td class="nump">$ 0<span></span>
</td>
<td class="nump">$ 18<span></span>
</td>
<td class="nump">285,257<span></span>
</td>
<td class="num">(231,549)<span></span>
</td>
<td class="num">(15)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rc">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockSharesIssued', window );">Balance, beginning of period (in shares) at Mar. 31, 2020</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">17,897,172<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward', window );"><strong>Increase (Decrease) in Shareholders' Equity</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_StockIssuedDuringPeriodValueNewIssuesAtMarketOfferings', window );">Issuance of common stock for at-the-market offerings</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 1<span></span>
</td>
<td class="nump">6,269<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_StockIssuedDuringPeriodSharesNewIssuesAtMarketOfferings', window );">Issuance of common stock for at-the-market offerings (in shares)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">926,429<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue', window );">Stock-based compensation expense</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">371<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetIncomeLoss', window );">Net loss</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="num">(9,508)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="num">(9,508)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax', window );">Realized loss on short-term investments</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">16<span></span>
</td>
<td class="nump">16<span></span>
</td>
</tr>
<tr class="rc">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquity', window );">Balance, end of period at Jun. 30, 2020</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 19<span></span>
</td>
<td class="nump">291,897<span></span>
</td>
<td class="num">(241,057)<span></span>
</td>
<td class="nump">$ 1<span></span>
</td>
<td class="nump">50,860<span></span>
</td>
</tr>
<tr class="rc">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockSharesIssued', window );">Balance, end of period (in shares) at Jun. 30, 2020</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">18,823,601<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rc">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquity', window );">Balance, beginning of period at Dec. 31, 2020</a></td>
<td class="nump">$ 0<span></span>
</td>
<td class="nump">$ 20<span></span>
</td>
<td class="nump">301,546<span></span>
</td>
<td class="num">(260,897)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 40,669<span></span>
</td>
</tr>
<tr class="rc">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockSharesIssued', window );">Balance, beginning of period (in shares) at Dec. 31, 2020</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">20,084,337<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">20,084,337<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward', window );"><strong>Increase (Decrease) in Shareholders' Equity</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_CommonStockValueReclassificationsIntoPermanentEquityFromTemporaryEquity', window );">Reclassification of preferred stock to permanent equity</a></td>
<td class="nump">$ 240,881<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_CommonStockSharesReclassificationsIntoPermanentEquityFromTemporaryEquity', window );">Reclassification of preferred stock to permanent equity (in shares)</a></td>
<td class="nump">86,077<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_StockIssuedDuringPeriodValueIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares', window );">Conversion of preferred stock into common stock</a></td>
<td class="num">$ (165,548)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_StockIssuedDuringPeriodSharesIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares', window );">Conversion of preferred stock into common stock (in shares)</a></td>
<td class="num">(53,532)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature', window );">Issuance of preferred stock in a private offering of public equity, net of issuance costs</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">19,565<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodValueAcquisitions', window );">Issuance of common stock upon acquisition of Quellis</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 3<span></span>
</td>
<td class="nump">8,095<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodSharesAcquisitions', window );">Issuance of common stock upon acquisition of Quellis (in shares)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">3,332,669<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities', window );">Issuance of common stock upon the conversion of preferred stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 54<span></span>
</td>
<td class="nump">165,495<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities', window );">Issuance of common stock upon the conversion of preferred stock (in shares)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">53,531,797<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_IncreaseDecreaseInEquityDueToDividendsOnConvertiblePreferredStockBeneficialConversionFeature', window );">Dividend on convertible preferred stock related to beneficial conversion feature and issuance costs</a></td>
<td class="nump">$ 24,437<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="num">(24,437)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued', window );">Expense related to warrants inherited in acquisition of Quellis</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">387<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_ReclassificationOfWarrantLiabilityUponConversionOfWarrants', window );">Reclassification of warrant liability to additional paid-in capital</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">3,468<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue', window );">Stock-based compensation expense</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1,380<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetIncomeLoss', window );">Net loss</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="num">(177,550)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="num">$ (177,550)<span></span>
</td>
</tr>
<tr class="rc">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquity', window );">Balance, end of period at Jun. 30, 2021</a></td>
<td class="nump">$ 99,770<span></span>
</td>
<td class="nump">$ 77<span></span>
</td>
<td class="nump">475,499<span></span>
</td>
<td class="num">(438,447)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 136,899<span></span>
</td>
</tr>
<tr class="rc">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockSharesIssued', window );">Balance, end of period (in shares) at Jun. 30, 2021</a></td>
<td class="nump">32,545<span></span>
</td>
<td class="nump">76,948,803<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">76,948,803<span></span>
</td>
</tr>
<tr class="rc">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquity', window );">Balance, beginning of period at Mar. 31, 2021</a></td>
<td class="nump">$ 0<span></span>
</td>
<td class="nump">$ 23<span></span>
</td>
<td class="nump">329,813<span></span>
</td>
<td class="num">(430,981)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rc">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockSharesIssued', window );">Balance, beginning of period (in shares) at Mar. 31, 2021</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">23,417,006<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward', window );"><strong>Increase (Decrease) in Shareholders' Equity</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_CommonStockValueReclassificationsIntoPermanentEquityFromTemporaryEquity', window );">Reclassification of preferred stock to permanent equity</a></td>
<td class="nump">$ 240,881<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_CommonStockSharesReclassificationsIntoPermanentEquityFromTemporaryEquity', window );">Reclassification of preferred stock to permanent equity (in shares)</a></td>
<td class="nump">86,077<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_StockIssuedDuringPeriodValueIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares', window );">Conversion of preferred stock into common stock</a></td>
<td class="num">$ (165,548)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_StockIssuedDuringPeriodSharesIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares', window );">Conversion of preferred stock into common stock (in shares)</a></td>
<td class="num">(53,532)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities', window );">Issuance of common stock upon the conversion of preferred stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 54<span></span>
</td>
<td class="nump">165,495<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities', window );">Issuance of common stock upon the conversion of preferred stock (in shares)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">53,531,797<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_IncreaseDecreaseInEquityDueToDividendsOnConvertiblePreferredStockBeneficialConversionFeature', window );">Dividend on convertible preferred stock related to beneficial conversion feature and issuance costs</a></td>
<td class="nump">$ 24,437<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="num">(24,437)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued', window );">Expense related to warrants inherited in acquisition of Quellis</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">146<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_ReclassificationOfWarrantLiabilityUponConversionOfWarrants', window );">Reclassification of warrant liability to additional paid-in capital</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">3,468<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue', window );">Stock-based compensation expense</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1,014<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetIncomeLoss', window );">Net loss</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="num">(7,466)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="num">$ (7,466)<span></span>
</td>
</tr>
<tr class="rc">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquity', window );">Balance, end of period at Jun. 30, 2021</a></td>
<td class="nump">$ 99,770<span></span>
</td>
<td class="nump">$ 77<span></span>
</td>
<td class="nump">$ 475,499<span></span>
</td>
<td class="num">$ (438,447)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 136,899<span></span>
</td>
</tr>
<tr class="rc">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockSharesIssued', window );">Balance, end of period (in shares) at Jun. 30, 2021</a></td>
<td class="nump">32,545<span></span>
</td>
<td class="nump">76,948,803<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">76,948,803<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_AdjustmentsToAdditionalPaidInCapitalCommonStockIssuedInPublicOffering">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of increase in additional paid in capital (APIC) resulting from the issuance of common stock in a public offering.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_AdjustmentsToAdditionalPaidInCapitalCommonStockIssuedInPublicOffering</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_CommonStockSharesReclassificationsIntoPermanentEquityFromTemporaryEquity">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The number of shares reclassified into permanent equity from temporary equity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_CommonStockSharesReclassificationsIntoPermanentEquityFromTemporaryEquity</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_CommonStockValueReclassificationsIntoPermanentEquityFromTemporaryEquity">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount reclassified into permanent equity from temporary equity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_CommonStockValueReclassificationsIntoPermanentEquityFromTemporaryEquity</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_IncreaseDecreaseInEquityDueToDividendsOnConvertiblePreferredStockBeneficialConversionFeature">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The increase (decrease) in equity due to dividends on convertible preferred stock related to a beneficial conversion feature.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_IncreaseDecreaseInEquityDueToDividendsOnConvertiblePreferredStockBeneficialConversionFeature</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_IssuanceOfCommonStockAndWarrantsInPublicOfferingsShares">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The number of common stock shares and warrants issued in public offerings.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_IssuanceOfCommonStockAndWarrantsInPublicOfferingsShares</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_IssuanceOfCommonStockAndWarrantsInPublicOfferingsValueNetOfIssuanceCosts">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Value of stock issued as a result of the issuance of common stock and warrants in Public Offerings and net Of issuance costs.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_IssuanceOfCommonStockAndWarrantsInPublicOfferingsValueNetOfIssuanceCosts</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_ReclassificationOfWarrantLiabilityUponConversionOfWarrants">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount of warrant liability reclassified to equity upon conversion of warrants.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_ReclassificationOfWarrantLiabilityUponConversionOfWarrants</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_StockIssuedDuringPeriodSharesIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The increase (decrease) in number of shares issued during the period upon the conversion of preferred shares into common shares.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_StockIssuedDuringPeriodSharesIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_StockIssuedDuringPeriodSharesNewIssuesAtMarketOfferings">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of new stock issued in At-the-Market offerings during the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_StockIssuedDuringPeriodSharesNewIssuesAtMarketOfferings</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_StockIssuedDuringPeriodValueIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The increase (decrease) in value of stock issued during the period upon the conversion of preferred shares into common shares.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_StockIssuedDuringPeriodValueIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_StockIssuedDuringPeriodValueNewIssuesAtMarketOfferings">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Equity impact of the value of new stock issued in At-the-Market offerings during the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_StockIssuedDuringPeriodValueNewIssuesAtMarketOfferings</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of increase (decrease) in additional paid in capital (APIC) resulting from recognition of deferred taxes for convertible debt with a beneficial conversion feature.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI http://asc.fasb.org/extlink&amp;oid=120397183&amp;loc=d3e187085-122770<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=109259400&amp;loc=d3e21463-112644<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 55<br> -Paragraph 51<br> -URI http://asc.fasb.org/extlink&amp;oid=121610041&amp;loc=d3e34017-109320<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of increase to additional paid-in capital (APIC) for recognition of cost for award under share-based payment arrangement.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 20<br> -Section 55<br> -Paragraph 12<br> -URI http://asc.fasb.org/extlink&amp;oid=120383193&amp;loc=d3e11149-113907<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=120381028&amp;loc=d3e5047-113901<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 20<br> -Section 55<br> -Paragraph 13<br> -URI http://asc.fasb.org/extlink&amp;oid=120383193&amp;loc=d3e11178-113907<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 35<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=121326096&amp;loc=d3e4534-113899<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of increase in additional paid in capital (APIC) resulting from the issuance of warrants. Includes allocation of proceeds of debt securities issued with detachable stock purchase warrants.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 20<br> -Section 25<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=109126253&amp;loc=d3e4724-112606<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=109259400&amp;loc=d3e21463-112644<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI http://asc.fasb.org/extlink&amp;oid=120397183&amp;loc=d3e187085-122770<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
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</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommonStockSharesIssued">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommonStockSharesIssued</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<tr>
<td><strong> Data Type:</strong></td>
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</tr>
<tr>
<td><strong> Balance Type:</strong></td>
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</tr>
<tr>
<td><strong> Period Type:</strong></td>
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</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInStockholdersEquityRollForward</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetIncomeLoss">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.</p></div>
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-SubTopic 10<br> -Section 50<br> -Paragraph 30<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=120311839&amp;loc=d3e8906-108599<br><br>Reference 18: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 250<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=109234566&amp;loc=d3e22583-107794<br><br>Reference 19: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(g)(1)(ii))<br> -URI http://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br><br>Reference 20: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 45<br> -Paragraph 60B<br> -Subparagraph (a)<br> -URI 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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetIncomeLoss</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount, after tax and adjustment, of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section 45<br> -Paragraph 10A<br> -Subparagraph (f)<br> -URI http://asc.fasb.org/extlink&amp;oid=121641772&amp;loc=SL7669646-108580<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section 45<br> -Paragraph 11<br> -URI http://asc.fasb.org/extlink&amp;oid=121641772&amp;loc=d3e637-108580<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section 45<br> -Paragraph 10A<br> -Subparagraph (e)<br> -URI http://asc.fasb.org/extlink&amp;oid=121641772&amp;loc=SL7669646-108580<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockIssuedDuringPeriodSharesAcquisitions">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of shares of stock issued during the period pursuant to acquisitions.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI http://asc.fasb.org/extlink&amp;oid=120397183&amp;loc=d3e187085-122770<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StockIssuedDuringPeriodSharesAcquisitions</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of shares issued during the period as a result of the conversion of convertible securities.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI http://asc.fasb.org/extlink&amp;oid=120397183&amp;loc=d3e187085-122770<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.29-30)<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=109259400&amp;loc=d3e21475-112644<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=109259400&amp;loc=d3e21463-112644<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockIssuedDuringPeriodValueAcquisitions">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Value of stock issued pursuant to acquisitions during the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=109259400&amp;loc=d3e21463-112644<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI http://asc.fasb.org/extlink&amp;oid=120397183&amp;loc=d3e187085-122770<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.29-31)<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StockIssuedDuringPeriodValueAcquisitions</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
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<td><strong> Balance Type:</strong></td>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The gross value of stock issued during the period upon the conversion of convertible securities.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=109259400&amp;loc=d3e21463-112644<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI http://asc.fasb.org/extlink&amp;oid=120397183&amp;loc=d3e187085-122770<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.29-31)<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
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<td><strong> Balance Type:</strong></td>
<td>credit</td>
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<td><strong> Period Type:</strong></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockholdersEquity">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(g)(1)(ii))<br> -URI http://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 310<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SAB Topic 4.E)<br> -URI http://asc.fasb.org/extlink&amp;oid=27010918&amp;loc=d3e74512-122707<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(31))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(30))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 825<br> -SubTopic 10<br> -Section 50<br> -Paragraph 28<br> -Subparagraph (f)<br> -URI http://asc.fasb.org/extlink&amp;oid=75031198&amp;loc=d3e14064-108612<br><br>Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 323<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=114001798&amp;loc=d3e33918-111571<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StockholdersEquity</td>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319774222696">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Condensed Consolidated Statements of Cash Flows - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">6 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Jun. 30, 2021</div></th>
<th class="th"><div>Jun. 30, 2020</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract', window );"><strong>Operating activities</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ProfitLoss', window );">Net loss</a></td>
<td class="num">$ (177,550)<span></span>
</td>
<td class="num">$ (17,460)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract', window );"><strong>Reconciliation of net loss to net cash used in operating activities:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_NonCashPortionOfAcquiredResearchAndDevelopment', window );">Non-cash portion of acquired in-process research and development</a></td>
<td class="nump">164,612<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensation', window );">Stock-based compensation expense</a></td>
<td class="nump">1,380<span></span>
</td>
<td class="nump">710<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_GainLossOnWarrantInherited', window );">(Gain) loss on warrants inherited in acquisiton of Quellis</a></td>
<td class="num">(700)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherNoncashIncomeExpense', window );">Other non-cash items</a></td>
<td class="nump">10<span></span>
</td>
<td class="nump">23<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract', window );"><strong>Changes in assets and liabilities:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets', window );">Prepaid expenses and other current assets</a></td>
<td class="nump">999<span></span>
</td>
<td class="nump">1,079<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_IncreaseDecreaseInRightOfUseAssetOperating', window );">Right-of-use asset-operating</a></td>
<td class="num">(85)<span></span>
</td>
<td class="nump">134<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInAccountsPayable', window );">Accounts payable</a></td>
<td class="num">(2,900)<span></span>
</td>
<td class="num">(26)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInAccruedLiabilities', window );">Accrued expenses</a></td>
<td class="num">(1,882)<span></span>
</td>
<td class="nump">1,085<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInOperatingActivities', window );">Net cash used in operating activities</a></td>
<td class="num">(16,116)<span></span>
</td>
<td class="num">(14,455)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract', window );"><strong>Investing activities</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PaymentsToAcquireShortTermInvestments', window );">Purchases of short-term investments</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="num">(42,777)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments', window );">Sales and maturities of short-term investments</a></td>
<td class="nump">20,000<span></span>
</td>
<td class="nump">67,110<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashAcquiredFromAcquisition', window );">Cash acquired in acquisition of Quellis</a></td>
<td class="nump">6,466<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment', window );">Purchases of property and equipment</a></td>
<td class="num">(21)<span></span>
</td>
<td class="num">(23)<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInInvestingActivities', window );">Net cash provided by (used in) investing activities</a></td>
<td class="nump">26,445<span></span>
</td>
<td class="nump">24,310<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract', window );"><strong>Financing activities</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ProceedsFromIssuanceInitialPublicOffering', window );">Proceeds from public offerings, net of issuance costs</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">24,559<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ProceedsFromIssuanceOfPrivatePlacement', window );">Proceeds from private offering of public equity, net of issuance costs</a></td>
<td class="nump">104,261<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_ProceedsFromIssuanceOfAtMarketOffering', window );">Proceeds from at-the-market offering, net of issuance costs</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">7,330<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInFinancingActivities', window );">Net cash provided by financing activities</a></td>
<td class="nump">104,261<span></span>
</td>
<td class="nump">31,889<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect', window );">Net increase in cash, cash equivalents and restricted cash</a></td>
<td class="nump">114,590<span></span>
</td>
<td class="nump">41,744<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents', window );">Cash, cash equivalents and restricted cash, beginning of period</a></td>
<td class="nump">25,051<span></span>
</td>
<td class="nump">10,376<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents', window );">Cash, cash equivalents and restricted cash, end of period</a></td>
<td class="nump">139,641<span></span>
</td>
<td class="nump">$ 52,120<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SupplementalCashFlowInformationAbstract', window );"><strong>Supplemental disclosure of cash flow information</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ConversionOfStockAmountConverted1', window );">Conversion of Series X Preferred Stock into common stock</a></td>
<td class="nump">165,549<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_DividendOnConvertiblePreferredStockRelatedToBeneficialConversionFeatureAndIssuanceCosts', window );">Non-cash dividend on convertible preferred stock</a></td>
<td class="nump">24,437<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_ReclassificationOfEquityClassifiedWarrants', window );">Reclassification of warrant liability to additional paid-in capital</a></td>
<td class="nump">$ 3,468<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_DividendOnConvertiblePreferredStockRelatedToBeneficialConversionFeatureAndIssuanceCosts">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount of dividend on convertible preferred stock related to beneficial conversion feature and issuance costs</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_DividendOnConvertiblePreferredStockRelatedToBeneficialConversionFeatureAndIssuanceCosts</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_GainLossOnWarrantInherited">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of gain (loss) on warrant inherited during acquisition.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_GainLossOnWarrantInherited</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_IncreaseDecreaseInRightOfUseAssetOperating">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The increase (decrease) during the reporting period in the aggregate amount of right-of-use-asset-operating.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_IncreaseDecreaseInRightOfUseAssetOperating</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_NonCashPortionOfAcquiredResearchAndDevelopment">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount of non-cash portion of acquired IP R&amp;D.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_NonCashPortionOfAcquiredResearchAndDevelopment</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
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</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_ProceedsFromIssuanceOfAtMarketOffering">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The cash inflow associated with the amount received from entity's At-the-market offering of stock to the public.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_ProceedsFromIssuanceOfAtMarketOffering</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_ReclassificationOfEquityClassifiedWarrants">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of increase (decrease) in additional paid in capital (APIC) resulting from reclassification of equity classified warrants.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_ReclassificationOfEquityClassifiedWarrants</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
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<tr>
<td><strong> Data Type:</strong></td>
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</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CashAcquiredFromAcquisition">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 12<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3179-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CashAcquiredFromAcquisition</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 24<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3521-108585<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 4<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3044-108585<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -URI http://asc.fasb.org/extlink&amp;oid=121583591&amp;loc=SL98516268-108586<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 830<br> -SubTopic 230<br> -Section 45<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=98513438&amp;loc=d3e33268-110906<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 24<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3521-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ConversionOfStockAmountConverted1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The value of the stock converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -URI http://asc.fasb.org/extlink&amp;oid=121583591&amp;loc=d3e4313-108586<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 50<br> -Paragraph 5<br> -URI http://asc.fasb.org/extlink&amp;oid=121583591&amp;loc=d3e4332-108586<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=121583591&amp;loc=d3e4304-108586<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ConversionOfStockAmountConverted1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInAccountsPayable">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInAccountsPayable</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInAccruedLiabilities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The increase (decrease) during the reporting period in the aggregate amount of expenses incurred but not yet paid.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInAccruedLiabilities</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInOperatingCapitalAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of increase (decrease) in prepaid expenses, and assets classified as other.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetCashProvidedByUsedInFinancingActivities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 24<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3521-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetCashProvidedByUsedInFinancingActivities</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetCashProvidedByUsedInInvestingActivities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 24<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3521-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetCashProvidedByUsedInInvestingActivities</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetCashProvidedByUsedInOperatingActivities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 25<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3536-108585<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 24<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3521-108585<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetCashProvidedByUsedInOperatingActivities</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherNoncashIncomeExpense">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of income (expense) included in net income that results in no cash inflow (outflow), classified as other.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherNoncashIncomeExpense</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 13<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3213-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PaymentsToAcquirePropertyPlantAndEquipment</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PaymentsToAcquireShortTermInvestments">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The cash outflow for securities or other assets acquired, which qualify for treatment as an investing activity and are to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 13<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3213-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PaymentsToAcquireShortTermInvestments</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ProceedsFromIssuanceInitialPublicOffering">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The cash inflow associated with the amount received from entity's first offering of stock to the public.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 14<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3255-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ProceedsFromIssuanceInitialPublicOffering</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ProceedsFromIssuanceOfPrivatePlacement">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 14<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3255-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ProceedsFromIssuanceOfPrivatePlacement</td>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319769861736">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Organization and Operations<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
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<tr><th class="th"><div>Jun. 30, 2021</div></th></tr>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NatureOfOperations', window );">Organization and Operations</a></td>
<td class="text"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">1.</b><b style="font-weight:bold;">&#160;&#160;&#160;&#160;&#160;Organization and Operations</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">The Company</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Catabasis Pharmaceuticals, Inc. (the &#8220;Company&#8221;) is a biopharmaceutical company focused on the discovery, development and commercialization of novel therapeutics. Its mission is to bring hope with life-changing therapies to patients and families. On October 26, 2020, the Company announced that the Phase 3 PolarisDMD trial of the Company&#8217;s previous lead product candidate, edasalonexent, for the treatment of Duchenne muscular dystrophy (DMD) did not meet its primary and secondary endpoints. Based on these results, the Company announced that it was stopping activities related to the development of edasalonexent, including the Company&#8217;s ongoing open-label extension trial. On January 28, 2021, the Company acquired Quellis Biosciences, Inc (&#8220;Quellis&#8221;). The Company's lead product candidate, which was acquired in the Quellis acquisition, is QLS-215, a monoclonal antibody inhibitor of plasma kallikrein in preclinical development for the treatment of hereditary angioedema, or HAE, a rare, debilitating and potentially life-threatening disease. The Company was incorporated in the State of Delaware on June 26, 2008.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Agreement and Plan of Merger</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">On January 28, 2021, the Company acquired Quellis (the &#8220;Quellis Acquisition&#8221;). Under the terms of the Merger Agreement, the Company issued to the stockholders of Quellis 3,332,669 shares of the Company&#8217;s common stock, par value $0.001 per share, and 50,504 shares of newly designated Series X redeemable convertible preferred stock (&#8220;Series X Preferred Stock&#8221;) (as described below). The Series X Preferred Stock had a conversion value on the closing date of $122.7 million. In addition, the Company assumed options granted under the Quellis stock option plan, which became options to purchase 332,494 shares of the Company&#8217;s common stock, a warrant to purchase 2,805 shares of Series X Preferred Stock at an exercise price of $341.70 per share, and a warrant to purchase 185,136 shares of the Company&#8217;s common stock at an exercise price of $0.35 per share, which warrants are exercisable until December 14, 2030. Upon stockholder approval of the Conversion Proposal (as defined below) on June 2, 2021, the warrant to purchase Series X Preferred Stock was converted into the right to purchase 2,805,000 shares of the Company&#8217;s common stock, at a per share exercise price of $0.35 per share.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Stock Purchase Agreement and Series X Preferred Stock</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Concurrent with the Quellis Acquisition, the Company entered into a Stock Purchase Agreement (the &#8220;Purchase Agreement&#8221;) with certain institutional and accredited investors. Pursuant to the Purchase Agreement, the Company sold an aggregate of 35,573 shares of Series X Preferred Stock for gross proceeds of approximately $110.0 million, and net proceeds of $104.3 million (the &#8220;February 2021 Financing&#8221;). In accounting for the Purchase Agreement, the Company recorded a beneficial conversion feature of $19.6 million and issuance costs of $5.7 million. 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style="vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.87%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Date</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:12.19%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Date</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Outstanding shares issued in merger</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 50,504</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:12.19%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 50,504,000</p></td></tr><tr><td style="vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Outstanding shares issued in February 2021 Financing</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 35,573</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:12.19%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 35,573,000</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Warrants assumed in merger</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.87%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 2,805</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:12.19%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 2,805,000</p></td></tr><tr><td style="vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Total</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.87%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 88,882</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:12.19%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 88,882,000</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">At its 2021 Annual Meeting of Stockholders on June 2, 2021, the Company&#8217;s stockholders approved the conversion of the Company&#8217;s Series X Preferred Stock into shares of the Company&#8217;s common stock in accordance with Nasdaq Listing Rule 5635(a) (the &#8220;Conversion Proposal&#8221;). Following stockholder approval of the Conversion Proposal, each share of Series X Preferred Stock then </p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;">outstanding automatically converted into 1,000 shares of the Company&#8217;s common stock, subject to certain beneficial ownership limitations, including that a holder of Series X Preferred Stock is prohibited from converting shares of Series X Preferred Stock into shares of the Company&#8217;s common stock if, as a result of such conversion, such holder, together with its affiliates, would beneficially own more than a specified percentage (to be initially set at 9.99% and thereafter adjustable by the holder to a number between 4.99% and 19.99%) of the total number of shares of the Company&#8217;s common stock issued and outstanding immediately after giving effect to such conversion. As of June 30, 2021, 53,532 shares of Series X Preferred Stock were converted into 53,531,797 shares of common stock and 32,545 shares of Series X Preferred Stock remained outstanding. Outstanding shares of Series X Preferred Stock are subject to conversion at the option of the holder.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Prior to stockholder approval of the Conversion Proposal, the terms of the Series X Preferred Stock included a cash redemption feature. This cash redemption feature resulted in substantial doubt about the Company&#8217;s ability to continue as a going concern as disclosed in the Company&#8217;s annual report on Form 10-K for the year ended December 31, 2020 (the &#8220;2020 Annual Report on Form 10-K&#8221;) and the Company&#8217;s quarterly report on Form 10-Q for the three months ended March 31, 2021. &#160;Upon stockholder approval of the Conversion Proposal, the cash redemption feature was eliminated and, consequently, there is no longer substantial doubt about the Company&#8217;s ability to continue as a going concern for at least twelve months subsequent to the issuance of these financial statements.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Holders of Series X Preferred Stock are entitled to receive dividends, subject to certain beneficial ownership limitations, on shares of Series X Preferred Stock equal, on an as-if-converted-to-common-stock basis, and in the same form as dividends actually paid on shares of the Company&#8217;s common stock. Except as otherwise required by law, the Series X Preferred Stock does not have voting rights. However, as long as any shares of Series X Preferred Stock are outstanding, the Company may not, without the affirmative vote of the holders of a majority of the then outstanding shares of the Series X Preferred Stock, (i) alter or change adversely the powers, preferences or rights given to the Series X Preferred Stock or alter or amend the Certificate of Designation that authorized the Series X Preferred Stock, amend or repeal any provision of, or add any provision to, the Company&#8217;s Certificate of Incorporation or bylaws, or file any articles of amendment, certificate of designations, preferences, limitations and relative rights of any series of preferred stock, if such action would adversely alter or change the preferences, rights, privileges or powers of, or restrictions provided for the benefit of the Series X Preferred Stock, (ii) issue further shares of Series X Preferred Stock or increase or decrease (other than by conversion) the number of authorized shares of Series X Preferred Stock, or (iii) enter into any agreement with respect to any of the foregoing.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">January 2020 Financing</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">On January 30, 2020, the Company entered into an underwriting agreement with Oppenheimer &amp; Co. Inc. relating to an underwritten public offering (the &#8220;January 2020 Financing&#8221;) of 5,290,000 shares of common stock at a price to the public of $5.00 per share, including 690,000 shares issued upon the exercise in full by Oppenheimer &amp; Co. Inc. of its overallotment option. This resulted in gross proceeds of $26.5 million, and net proceeds of $24.6 million.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Liquidity</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">The Company has entered into various sales agreements with Cowen and Company LLC (&#8220;Cowen&#8221;), pursuant to which the Company could issue and sell shares of common stock under at-the-market offering programs. On May 20, 2021, the Company terminated its sales agreement with Cowen. On June 30, 2021, the Company entered into an Open Market Sale Agreement<sup style="font-size:7.5pt;line-height:100%;top:0pt;vertical-align:top;">SM</sup> with Jefferies LLC (&#8220;Jefferies&#8221;), pursuant to which the Company could issue and sell shares of common stock of up to $25.0 million under at-the-market offering programs (collectively, with the Cowen at-the-market offering program, the &#8220;ATM Programs&#8221;). The Company pays 3% of the gross proceeds from any common stock sold through the ATM Programs. As of June 30, 2021, the Company has not sold any shares of common stock pursuant to the Jeffries agreement and $25.0 million of common stock remains available for sale under the Jefferies agreement.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">During the six months ended June 30, 2020, the Company sold an aggregate of 1,100,001 shares of common stock pursuant to the ATM Programs, at an average price of $6.87 per share, for net proceeds of $7.3 million after deducting sales commissions and offering expenses. There was no activity from the ATM Programs during the six months ended June 30, 2021.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">As of June 30, 2021, the Company had an accumulated deficit of $438.4 million and had available cash and cash equivalents of $139.5 million. The Company has been primarily involved with research and development activities and has incurred operating losses and negative cash flows from operations since its inception. The Company has not generated any product revenues and has financed its operations primarily through public offerings and private placements of its equity securities. There can be no assurance that the Company will be able to obtain additional debt, equity or other financing or generate product revenue or revenues from collaborative partners, on </p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;">terms acceptable to the Company, on a timely basis or at all. The failure of the Company to obtain sufficient funds on acceptable terms when needed could have a material adverse effect on the Company's business, results of operations, and financial condition.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The Company is subject to a number of risks similar to other life science companies, including, but not limited to, successful discovery and development of its drug candidates, raising additional capital, development by its competitors of new technological innovations, protection of proprietary technology and regulatory approval and market acceptance of the Company's products. The Company has been primarily involved with research and development activities and has incurred operating losses and negative cash flows from operations since its inception. The Company anticipates that it will continue to incur significant operating losses for the next several years as it continues to develop its product candidates.</p><span></span>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319771260392">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Summary of Significant Accounting Policies<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
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<tr><th class="th"><div>Jun. 30, 2021</div></th></tr>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccountingPoliciesAbstract', window );"><strong>Summary of Significant Accounting Policies</strong></a></td>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SignificantAccountingPoliciesTextBlock', window );">Summary of Significant Accounting Policies</a></td>
<td class="text"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">2.&#160;&#160;&#160;&#160;&#160;</b><b style="font-weight:bold;">Summary of Significant Accounting Policies</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Basis of Presentation and Principles of Consolidation</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">The accompanying financial statements and the related disclosures are unaudited and have been prepared in accordance with United States generally accepted accounting principles (&#8220;U.S. GAAP&#8221;). Additionally, certain information and footnote disclosures normally included in the Company&#8217;s annual financial statements have been condensed or omitted from this report. Accordingly, these condensed financial statements should be read in conjunction with the financial statements as of and for the year ended December 31, 2020 and notes thereto included in the 2020 Annual Report on Form 10-K.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">The unaudited interim condensed consolidated financial statements have been prepared on the same basis as the audited financial statements. In the opinion of the Company&#8217;s management, the accompanying unaudited interim condensed consolidated financial statements contain all adjustments, including those adjustments that are of a normal and recurring nature, which are necessary to fairly present the Company&#8217;s results for the interim periods presented. The results for the three and six months ended June 30, 2021 are not necessarily indicative of the results for the year ending December 31, 2021, or for any future period.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">The accompanying condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries, Catabasis Securities Corporation and Quellis Biosciences, LLC, successor in interest to Quellis. All intercompany balances and transactions have been eliminated in consolidation.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Use of Estimates</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">The preparation of the Company&#8217;s condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Actual results could differ from such estimates.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The Company utilizes certain estimates to record expenses relating to research and development contracts. These contract estimates, which are primarily related to the length of service of each contract and the amount of service provided as of each measurement date, are determined by the Company based on input from internal project management, as well as from the Company&#8217;s service providers.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Net Loss Per Share</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Basic net loss per share is calculated by dividing net loss attributable to common shareholders by the weighted average shares outstanding during the period, without consideration for common stock equivalents. Diluted net loss per share is calculated by adjusting weighted average shares outstanding for the dilutive effect of common stock equivalents outstanding for the period, determined using the treasury-stock method. For purposes of the Company&#8217;s dilutive net loss per share calculation, preferred stock, stock options and warrants to purchase common stock and preferred stock were considered to be common stock equivalents but were excluded from the calculation of diluted net loss per share, as their effect would be anti-dilutive; therefore, basic and diluted net loss per share were the same for all periods presented. </p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The following common stock equivalents were excluded from the calculation of diluted net loss per share for the periods indicated because including them would have had an anti-dilutive effect:</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:79.99%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:14.24%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:14.21%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td colspan="3" style="vertical-align:bottom;white-space:nowrap;width:30.77%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Three and Six Months Ended June&#160;30,&#160;</b></p></td></tr><tr><td style="vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.24%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2021</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.21%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2020</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Series X Preferred Stock (1)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">32,545,203 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.21%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td></tr><tr><td style="vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Stock&#160;options</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">7,930,334 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.21%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,301,262</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Common&#160;stock&#160;warrants</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">9,183,885 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.21%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 6,193,749</p></td></tr><tr><td style="vertical-align:bottom;white-space:nowrap;width:67.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.24%;border-bottom:3px double #000000;border-top:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">49,659,422 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.21%;border-bottom:3px double #000000;border-top:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 7,495,011</p></td></tr></table><div style="font-family:'Times New Roman','Times','serif';font-size:9.0pt;margin-bottom:0pt;margin-left:54pt;min-height:1.19em;position:relative;width:100%;"><div style="background-color:#000000;height:1pt;position:relative;top:0.6em;width:25.0%;border:none;margin:0 auto 0 0;"/></div><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 54pt;">(1)&#160;&#160;&#160;&#160;Shown as common stock equivalents</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-style:italic;font-weight:bold;visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Cash,&#160;Cash&#160;Equivalents and Restricted Cash</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The reconciliation of cash, cash equivalents and restricted cash reported within the applicable balance sheet that sum to the total of the same such amount shown in the statement of cash flows is as follows (in thousands):</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.23%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="5" style="vertical-align:bottom;white-space:nowrap;width:23.76%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">June&#160;30,&#160;</b></p></td></tr><tr><td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.71%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2021</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2020</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Cash&#160;and&#160;cash&#160;equivalents</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.23%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">139,520 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 51,885</p></td></tr><tr><td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Restricted&#160;cash&#160;(1)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.23%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">121 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 235</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Total</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.23%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">139,641 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 52,120</p></td></tr></table><div style="font-family:'Times New Roman','Times','serif';font-size:9.0pt;margin-bottom:0pt;margin-left:54pt;min-height:1.19em;position:relative;width:100%;"><div style="background-color:#000000;height:1pt;position:relative;top:0.6em;width:25.0%;border:none;margin:0 auto 0 0;"/></div><p style="font-family:'Times New Roman','Times','serif';font-size:9pt;line-height:1.19;text-align:justify;margin:0pt 0pt 0pt 54pt;">(1)&#160;&#160;&#160;&#160;Included in prepaid expenses and other current assets and other assets.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><span style="font-size:9pt;visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Acquired In-Process Research and Development</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">The Company measures and recognizes asset acquisitions that are not deemed to be business combinations based on the cost to acquire the assets, which includes transaction costs. Goodwill is not recognized in asset acquisitions. In an asset acquisition, the cost allocated to acquire in-process research and development (&#8220;IPR&amp;D&#8221;) with no alternative future use is charged to expense at the acquisition date. Refer to Note 3, &#8220;Acquisition of Quellis&#8221; for a more detailed description of the accounting policy utilized for the recent asset acquisition.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Preferred Stock Discount</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">As discussed above, in February 2021, the Company issued Series X Preferred Stock in a private placement transaction. It was determined that this transaction resulted in recognition of a beneficial conversion feature, which was valued based on the difference between the price of the shares of common stock on the date of commitment and the conversion price on the closing date, resulting in a total value of $19.6 million. Additionally, the Company incurred total issuance costs of $5.7 million related to the private placement. Both of these features were taken as a discount on Series X Preferred Stock recognized at the close of the transaction. These features are analogous to preferred dividends and are recorded as a non-cash return to holders of Series X Preferred Stock through additional paid in capital. The discount related to the beneficial conversion feature is recognized through the earliest possible date of conversion, which occurred upon the shareholder approval of the conversion in June 2021. The issuance costs are recognized as a dividend at the time of conversion to common shares. As of June 30, 2021, $24.4 million of the above amounts were accounted for as a non-cash return related to shares of Series X Preferred Stock.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Recent&#160;Accounting&#160;Pronouncements - Not Yet Adopted</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board (&#8220;FASB&#8221;) or other standard setting bodies and adopted by the Company as of the specified effective date.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">In June 2016, the FASB issued Accounting Standards Update (&#8220;ASU&#8221;) 2016-13, <i style="font-style:italic;">Financial Instruments-Credit Losses</i> (Topic 326). This standard requires a financial asset to be presented at amortized cost basis at the net amount expected to be collected. It also requires that credit losses relating to available-for-sale debt securities should be recorded through an allowance for credit losses. In November 2019, the FASB issued an amendment making this ASU effective for annual reporting periods beginning after December 15, 2022 for </p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;">smaller reporting companies, early adoption is permitted. The Company is currently evaluating the impact that this standard will have on its consolidated financial statements.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Summary&#160;of Significant&#160;Accounting Policies</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The Company&#8217;s significant accounting policies are described in Note 2, &#8220;Summary of Significant Accounting Policies,&#8221; in the Company&#8217;s 2020 Annual Report on Form 10-K, and there were no significant changes to such policies in the three and six months ended June 30, 2021 that had a material impact on the Company&#8217;s results of operations or financial position.</p><span></span>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319769937208">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Acquisition of Quellis<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
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<tr><th class="th"><div>Jun. 30, 2021</div></th></tr>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_BusinessCombinationsAbstract', window );"><strong>Acquisition of Quellis</strong></a></td>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_BusinessCombinationDisclosureTextBlock', window );">Acquisition of Quellis</a></td>
<td class="text"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">3.&#160;&#160;&#160;&#160;&#160;Acquisition of Quellis</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">On January 28, 2021, the Company completed its acquisition of Quellis in accordance with the terms of the Merger Agreement as discussed in Note 1, &#8220;Organization and Operations&#8221;<i style="font-style:italic;">.</i> Under the terms of the Merger Agreement, the Company issued 3,332,669 shares of Common Stock and 50,504 shares of Series X Preferred Stock. Each share of Series X Preferred Stock is convertible into 1,000 shares of Common Stock, subject to certain conditions.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">The Company concluded that the Quellis Acquisition was not the acquisition of a business, as substantially all of the fair value of the non-monetary assets acquired was concentrated in a single identifiable asset, QLS-215.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The Company determined that the cost to acquire the Quellis assets was $170.7 million, based on the fair value of the equity consideration issued and including direct costs of the acquisition of $1.8 million. The net assets acquired in connection with the Quellis Acquisition were recorded at their estimated fair values as of January 28, 2021, which is the date the Quellis Acquisition was completed. The following table summarizes the net assets acquired based on their estimated fair values as of January 28, 2021 (in thousands):</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.8%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Acquired IPR&amp;D</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.8%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 164,612</p></td></tr><tr><td style="vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Cash and cash equivalents</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.8%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 8,307</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Prepaid expenses and other assets</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.8%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 136</p></td></tr><tr><td style="vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Accounts payable</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.8%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (1,974)</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Accrued liabilities</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.87%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.8%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (400)</p></td></tr><tr><td style="vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Net acquired tangible assets</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.87%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.8%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 170,681</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">In the estimation of fair value of the asset purchase consideration, the Company used the carrying value of the cash and cash equivalents, prepaid expenses, accounts payable and accrued liabilities as the most reliable indicator of fair value based on the associated short-term nature of the balances. The remaining fair value was attributable to the acquired IPR&amp;D. As QLS-215 had not, at the time of the Quellis Acquisition, received regulatory approval in any territory, the cost attributable to the IPR&amp;D was expensed in the Company&#8217;s consolidated statements of operations and comprehensive loss for the six months ended June 30, 2021 as the acquired IPR&amp;D had no alternative future use, as determined by the Company in accordance with U.S. GAAP.</p><span></span>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 805<br> -URI http://asc.fasb.org/topic&amp;trid=2303972<br></p></div>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319771266216">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Financial Instruments<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
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<tr><th class="th"><div>Jun. 30, 2021</div></th></tr>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueDisclosuresAbstract', window );"><strong>Financial Instruments</strong></a></td>
<td class="text">&#160;<span></span>
</td>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueDisclosuresTextBlock', window );">Financial Instruments</a></td>
<td class="text"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">4.&#160;&#160;&#160;&#160;Financial Instruments</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">The tables below present information about the Company&#8217;s assets and liabilities that are measured at fair value on a recurring basis as of June 30, 2021 and December 31, 2020 and indicate the fair value hierarchy of the valuation techniques the Company utilized to determine such fair value. In general, fair values determined by Level 1 inputs utilize observable inputs such as quoted prices in active markets for identical assets or liabilities. Fair values determined by Level 2 inputs utilize data points that are either directly or indirectly observable, such as quoted prices, interest rates and yield curves. Fair values determined by Level 3 inputs utilize unobservable data points for which there is little or no market data, which require the Company to develop its own assumptions for the asset or liability. There were no transfers between fair value measurement levels during the three and six months ended June 30, 2021 or 2020.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The Company&#8217;s investment portfolio may include fixed income securities that do not always trade on a daily basis. As a result, the pricing services used by the Company apply other available information as applicable through processes such as benchmark yields, benchmarking of like securities, sector groupings and matrix pricing to prepare valuations. The Company validates the prices provided by its third party pricing services by obtaining market values from other pricing sources and analyzing pricing data in certain instances. The Company has from time to time invested in certain reverse repurchase agreements which are collateralized by deposits in the form of U.S. Government Securities and Obligations for an amount no less than 102% of their value. The Company has not recorded an asset </p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;">or liability for the collateral as the Company was not permitted to sell or re-pledge the collateral. The collateral had at least the prevailing credit rating of U.S. Government Treasuries and Agencies. The Company utilized a third-party custodian to manage the exchange of funds and ensure that collateral received is maintained at 102% of the value of the reverse repurchase agreements on a daily basis.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">The Company accounted for warrants to purchase its stock pursuant to Accounting Standards Codification (&#8220;ASC&#8221;) Topic 470, <i style="font-style:italic;">Debt</i>, and ASC Topic 480, <i style="font-style:italic;">Distinguishing Liabilities from Equity</i>, and classifies warrants for common stock and preferred stock as liabilities or equity. The warrants classified as liabilities are reported at their estimated fair value and any changes in fair value are reflected in research and development expense. The warrants classified as equity are reported at their estimated fair value with no subsequent remeasurement.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">Below is a summary of assets and liabilities measured at fair value on a recurring basis (in thousands):</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td colspan="11" style="vertical-align:bottom;white-space:nowrap;width:49.79%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">As of June&#160;30,&#160;2021</b></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Quoted Prices</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Significant</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Significant</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">in Active</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Observable</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Unobservable</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Markets</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Inputs</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Inputs</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">(Level 1)</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">(Level 2)</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">(Level 3)</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.65%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Total</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Assets:</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Cash and cash equivalents:</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;">Money market funds</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,841</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:middle;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,841</p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;">Reverse repurchase agreements</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 39,000</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:middle;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.17%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 39,000</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Total assets</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,841</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 39,000</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 40,841</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td colspan="11" style="vertical-align:bottom;white-space:nowrap;width:49.79%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">As of December&#160;31,&#160;2020</b></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Quoted Prices</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Significant</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Significant</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;width:10.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">in Active</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Observable</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Unobservable</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Markets</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Inputs</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Inputs</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">(Level 1)</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">(Level&#160;2)</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">(Level&#160;3)</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.65%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Total</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Assets:</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;">Cash&#160;and&#160;cash&#160;equivalents:</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 24pt;">Money&#160;market&#160;funds</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 22,999</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 22,999</p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;">Short-term&#160;investments:</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 24pt;">Reverse&#160;repurchase&#160;agreements</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 20,000</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 20,000</p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Total&#160;assets</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 22,999</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 20,000</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.17%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 42,999</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">At June 30, 2021 and December 31, 2020, cash equivalents approximated their fair value due to their short-term nature.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The warrant liability was valued based on significant inputs not observable in the market, which represents a Level 3 measurement within the fair value hierarchy. The Company estimated the fair value of the warrant liability using Black-Scholes option-pricing models and assumptions that are based on the individual characteristics of the warrants on the valuation date, as well as assumptions including the fair value per share of the underlying security, the remaining contractual term of the warrant, risk-free interest rate, expected dividend yield and expected volatility of the price of the underlying security (in thousands).</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.7%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.32%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">June 30, 2021</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Balance at beginning of year</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td></tr><tr><td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Issuance of warrants</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 4,332</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">(Decrease) increase in the fair value of the warrants</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (864)</p></td></tr><tr><td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Reclassification of warrant liability to additional paid-in capital</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.62%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (3,468)</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Ending balance</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.7%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.62%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p><span></span>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 820<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=117815213&amp;loc=d3e19207-110258<br></p></div>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319771845896">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Short-Term Investments<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th"><div>Jun. 30, 2021</div></th></tr>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShortTermInvestmentsAbstract', window );"><strong>Short-Term Investments</strong></a></td>
<td class="text">&#160;<span></span>
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<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_ShortTermInvestmentsTextBlock', window );">Short-Term Investments</a></td>
<td class="text"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">5.&#160;&#160;&#160;&#160;Short-Term Investments</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The Company did not hold any short-term investments at June 30, 2021. The following table summarizes the short-term investments held at December 31, 2020 (in thousands):</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.24%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New 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style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.2%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Gross&#160;Unrealized</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" 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Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.62%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Amortized&#160;Cost</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Gains</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New 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style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.2%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Reverse&#160;repurchase&#160;agreements</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.24%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 20,000</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.2%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 20,000</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;">Total</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.24%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 20,000</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.2%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 20,000</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">The contractual maturities of all short-term investments held at December 31, 2020 were one year or less. There were no short-term investments in an unrealized loss position at December 31, 2020. </p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">Gross realized gains and losses on the sales of short-term investments are included in other income, net. Unrealized holding gains or losses for the period that have been included in accumulated other comprehensive income, as well as gains and losses reclassified out of accumulated other comprehensive income into other income, net were not material to the Company&#8217;s condensed consolidated results of operations. The cost of investments sold or the amount reclassified out of the accumulated other comprehensive income into other income, net is based on the specific identification method for purposes of recording realized gains and losses. All proceeds in the three and six-month periods ended June 30, 2021 and 2020 related to maturities of underlying investments. The gains on proceeds from maturities of short-term investments were not material to the Company&#8217;s condensed consolidated results of operations for the three and six months ended June 30, 2021 and 2020.</p><span></span>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319774920088">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Accrued Expenses<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
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<tr><th class="th"><div>Jun. 30, 2021</div></th></tr>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock', window );">Accrued Expenses</a></td>
<td class="text"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">6.</b><b style="font-weight:bold;">&#160;&#160;&#160;&#160;Accrued Expenses</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">Accrued expenses consisted of the following (in thousands):</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:79.99%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.02%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">June&#160;30,&#160;</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.02%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">December&#160;31,&#160;</b></p></td></tr><tr><td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.02%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2021</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.02%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2020</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Accrued&#160;compensation</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">1,018 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,719</p></td></tr><tr><td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Accrued contracted research costs</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">790 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,726</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Accrued professional fees</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">663 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 356</p></td></tr><tr><td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Accrued other</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">180 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Accrued severance</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">63 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 396</p></td></tr><tr><td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Total</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.42%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.6%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">2,714 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.42%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.6%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 4,197</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p><span></span>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.19(a),20,24)<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319775150728">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Stockholders' Equity<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
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<tr><th class="th"><div>Jun. 30, 2021</div></th></tr>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquityNoteAbstract', window );"><strong>Stockholders' Equity</strong></a></td>
<td class="text">&#160;<span></span>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockTextBlock', window );">Stockholders' Equity</a></td>
<td class="text"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">7.</b><b style="font-weight:bold;">&#160;&#160;&#160;&#160;Stockholders&#8217; Equity</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Preferred Stock</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">Under the Company&#8217;s amended and restated certificate of incorporation, the Company has 5,000,000 shares of preferred stock authorized for issuance, with a $0.001 par value per share. Preferred stock may be issued from time to time in one or more series, each series to have such terms as stated or expressed in the resolutions providing for the issue of such series adopted by the board of directors of the Company. Preferred stock which may be redeemed, purchased or acquired by the Company may be reissued except as otherwise </p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;">provided by law. As of June 30, 2021, the Company had 32,545 shares of Series X Preferred Stock outstanding. Refer to Note 1 &#8220;Organization and Operations<i style="font-style:italic;">&#8221;</i> regarding the Company&#8217;s issuance of Series X Preferred Stock in January 2021 and February 2021.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Outstanding Warrants</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The following table presents information about warrants that are issued and outstanding at June 30, 2021: &#160;</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New 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style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:15.4%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Equity Instrument</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:18.06%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Warrants&#160;Outstanding</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.43%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Exercise&#160;Price</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.72%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Date&#160;of&#160;Expiration</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">2014</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"> Common Stock </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">1,227 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">122.12 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">8/26/2021</p></td></tr><tr><td style="vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">2015</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"> Common Stock </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">1,227 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">122.12 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">3/30/2022</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">2018</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"> Common Stock </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">4,199,995 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">12.00 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">6/21/2023</p></td></tr><tr><td style="vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">2019</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"> Common Stock </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">1,991,300 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">6.25 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">2/7/2024</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">2021</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"> Common Stock </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.06%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">2,990,136 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">0.35 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">12/14/2030</p></td></tr><tr><td style="vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Total</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:18.06%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">9,183,885 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;&#160;</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Weighted average exercise price</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">6.99 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;&#160;</p></td></tr><tr><td style="vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Weighted average life in years</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">4.55 </p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p><span></span>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The entire disclosure for terms, amounts, nature of changes, rights and privileges, dividends, and other matters related to preferred stock.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -URI http://asc.fasb.org/topic&amp;trid=2208762<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319786474888">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Reserved for Future Issuance<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th"><div>Jun. 30, 2021</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_CommonStockReservedForFutureIssuanceAbstract', window );"><strong>Reserved for Future Issuance</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_CommonStockReservedForFutureIssuanceTextBlock', window );">Reserved for Future Issuance</a></td>
<td class="text"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">8.</b><b style="font-weight:bold;">&#160;&#160;&#160;&#160;Reserved for Future Issuance</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The Company has reserved for future issuance the following shares of common stock:</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:79.99%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:11.12%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:11.26%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:9pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:9pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.12%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">June&#160;30,&#160;</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.26%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">December&#160;31,&#160;</b></p></td></tr><tr><td style="vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:9pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:9pt;line-height:1.19;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';">&#160;&#160;&#160;&#160;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.12%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2021</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';">&#160;&#160;&#160;&#160;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.26%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2020</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Warrants&#160;for&#160;the&#160;purchase&#160;of&#160;common&#160;stock</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">9,183,885 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 6,193,749</p></td></tr><tr><td style="vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Options&#160;outstanding&#160;to&#160;purchase&#160;common&#160;stock</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">7,930,334 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,367,667</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Options&#160;available&#160;for&#160;future&#160;issuance&#160;to&#160;purchase&#160;common&#160;stock</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">1,697,308 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,936,173</p></td></tr><tr><td style="vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Shares&#160;reserved&#160;for&#160;the&#160;employee&#160;stock&#160;purchase&#160;plan</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.12%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">185,421 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.26%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 148,951</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Total</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.12%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">18,996,948 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.26%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 9,646,540</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">As of June 30, 2021, the Company also had 32,545 shares of Series X Preferred Stock outstanding. Each share of Series X Preferred Stock outstanding is convertible into 1,000 shares of the Company&#8217;s common stock, subject to certain beneficial ownership limitations at the holder&#8217;s option. See Note 1 &#8220;Organization and Operations<i style="font-style:italic;">&#8221;</i> for additional detail.</p><span></span>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_CommonStockReservedForFutureIssuanceAbstract</td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The entire disclosure for common stock reserved for future issuance.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319769704200">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Stock Incentive Plans<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th"><div>Jun. 30, 2021</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract', window );"><strong>Stock Incentive Plans</strong></a></td>
<td class="text">&#160;<span></span>
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<tr class="ro">
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<td class="text"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">9.&#160;&#160;&#160;&#160;</b><b style="font-weight:bold;">Stock Incentive Plans</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">A summary of the Company&#8217;s stock option activity and related information follows:</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Weighted</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Average</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Weighted-</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Remaining</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Aggregate</b></p></td></tr><tr><td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Average Exercise</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Contractual</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Intrinsic Value</b></p></td></tr><tr><td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><b style="font-family:'Calibri','Helvetica','sans-serif';font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.52%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Shares</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><b style="font-family:'Calibri','Helvetica','sans-serif';font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;Price</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><b style="font-family:'Calibri','Helvetica','sans-serif';font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;"> Term (years)</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><b style="font-family:'Calibri','Helvetica','sans-serif';font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">(in&#160;thousands)</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Outstanding&#160;at&#160;December&#160;31,&#160;2020</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,367,667</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">11.38</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">8.13</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td></tr><tr><td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Granted</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 6,447,000</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">2.74</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Assumed in Quellis Acquisition</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">332,494 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">0.29</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Cancelled&#160;or&#160;forfeited</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(208,152)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">8.71</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"> <span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"> <span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Expired</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.52%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(8,675)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">16.70</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Outstanding&#160;at&#160;June 30, 2021</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.52%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">7,930,334 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">3.96</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">9.44</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 662</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Vested&#160;and&#160;exercisable&#160;at&#160;June 30, 2021</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.52%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">770,141 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">14.07</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">7.31</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 207</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">There were no options exercised in the three or six months ended June 30, 2021 and 2020. The total grant date fair value of options vested for the three months ended June 30, 2021 and 2020 was $0.4 million and $0.3 million, respectively. The total grant date fair value of options vested for the six months ended June 30, 2021 and 2020 was $1.0 million and $0.8 million, respectively. The weighted-average grant date fair value of options granted to employees and non-employees for the three months ended June 30, 2021 and 2020 </p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;">was $1.73 and $4.00, respectively. The weighted-average grant date fair value of options granted to employees and non-employees for the six months ended June 30, 2021 and 2020 was $1.73 and $3.64, respectively.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">At June 30, 2021, the total unrecognized compensation expense related to unvested stock option awards was $12.7 million. The Company expects to recognize that cost over a weighted-average period of approximately 3.3 years. </p><span></span>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The entire disclosure for share-based payment arrangement.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -URI http://asc.fasb.org/topic&amp;trid=2228938<br></p></div>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319771343448">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Subsequent Events<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
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<tr><th class="th"><div>Jun. 30, 2021</div></th></tr>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SubsequentEventsAbstract', window );"><strong>Subsequent Events</strong></a></td>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SubsequentEventsTextBlock', window );">Subsequent Events</a></td>
<td class="text"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">10.&#160;&#160;&#160;</b><b style="font-weight:bold;">Subsequent Events</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><i style="font-style:italic;">Reverse Stock Split</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-indent:18pt;margin:0pt;">On August 4, 2021, the Company&#8217;s Board of Directors approved a reverse stock split of its outstanding shares of common stock at a ratio of one-for-<span style="-sec-ix-hidden:Hidden_eDKkDufasEG7Uy_Ec9Rr0A;"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;line-height:1.19;text-align:left;">six</span></span>. The reverse stock split will become effective on August 19, 2021 pursuant to a Certificate of Amendment to its Certificate of Incorporation to be filed with the Secretary of State of the State of Delaware. The reverse stock split was approved by the Company's stockholders at the Company's Annual Meeting of Stockholders on June 2, 2021. All share and per share amounts of the common stock included in the accompanying consolidated financial statements have been presented without giving effect to the reverse stock split.</p><span></span>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 855<br> -URI http://asc.fasb.org/topic&amp;trid=2122774<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 855<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=6842918&amp;loc=SL6314017-165662<br></p></div>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319769734920">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Summary of Significant Accounting Polices (Polices)<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th"><div>Jun. 30, 2021</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccountingPoliciesAbstract', window );"><strong>Summary of Significant Accounting Policies</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_BasisOfAccountingPolicyPolicyTextBlock', window );">Basis of Presentation and Principles of Consolidation</a></td>
<td class="text"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Basis of Presentation and Principles of Consolidation</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">The accompanying financial statements and the related disclosures are unaudited and have been prepared in accordance with United States generally accepted accounting principles (&#8220;U.S. GAAP&#8221;). Additionally, certain information and footnote disclosures normally included in the Company&#8217;s annual financial statements have been condensed or omitted from this report. Accordingly, these condensed financial statements should be read in conjunction with the financial statements as of and for the year ended December 31, 2020 and notes thereto included in the 2020 Annual Report on Form 10-K.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">The unaudited interim condensed consolidated financial statements have been prepared on the same basis as the audited financial statements. In the opinion of the Company&#8217;s management, the accompanying unaudited interim condensed consolidated financial statements contain all adjustments, including those adjustments that are of a normal and recurring nature, which are necessary to fairly present the Company&#8217;s results for the interim periods presented. The results for the three and six months ended June 30, 2021 are not necessarily indicative of the results for the year ending December 31, 2021, or for any future period.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">The accompanying condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries, Catabasis Securities Corporation and Quellis Biosciences, LLC, successor in interest to Quellis. All intercompany balances and transactions have been eliminated in consolidation.</p><span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_UseOfEstimates', window );">Use of Estimates</a></td>
<td class="text"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Use of Estimates</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">The preparation of the Company&#8217;s condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Actual results could differ from such estimates.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The Company utilizes certain estimates to record expenses relating to research and development contracts. These contract estimates, which are primarily related to the length of service of each contract and the amount of service provided as of each measurement date, are determined by the Company based on input from internal project management, as well as from the Company&#8217;s service providers.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EarningsPerSharePolicyTextBlock', window );">Net Loss Per Share</a></td>
<td class="text"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Net Loss Per Share</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">Basic net loss per share is calculated by dividing net loss attributable to common shareholders by the weighted average shares outstanding during the period, without consideration for common stock equivalents. Diluted net loss per share is calculated by adjusting weighted average shares outstanding for the dilutive effect of common stock equivalents outstanding for the period, determined using the treasury-stock method. For purposes of the Company&#8217;s dilutive net loss per share calculation, preferred stock, stock options and warrants to purchase common stock and preferred stock were considered to be common stock equivalents but were excluded from the calculation of diluted net loss per share, as their effect would be anti-dilutive; therefore, basic and diluted net loss per share were the same for all periods presented. </p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The following common stock equivalents were excluded from the calculation of diluted net loss per share for the periods indicated because including them would have had an anti-dilutive effect:</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:79.99%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:14.24%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:14.21%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td colspan="3" style="vertical-align:bottom;white-space:nowrap;width:30.77%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Three and Six Months Ended June&#160;30,&#160;</b></p></td></tr><tr><td style="vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.24%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2021</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.21%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2020</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Series X Preferred Stock (1)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">32,545,203 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.21%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td></tr><tr><td style="vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Stock&#160;options</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">7,930,334 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.21%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,301,262</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Common&#160;stock&#160;warrants</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">9,183,885 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.21%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 6,193,749</p></td></tr><tr><td style="vertical-align:bottom;white-space:nowrap;width:67.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.24%;border-bottom:3px double #000000;border-top:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">49,659,422 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.21%;border-bottom:3px double #000000;border-top:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 7,495,011</p></td></tr></table><div style="font-family:'Times New Roman','Times','serif';font-size:9.0pt;margin-bottom:0pt;margin-left:54pt;min-height:1.19em;position:relative;width:100%;"><div style="background-color:#000000;height:1pt;position:relative;top:0.6em;width:25.0%;border:none;margin:0 auto 0 0;"/></div><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 54pt;">(1)&#160;&#160;&#160;&#160;Shown as common stock equivalents</p><span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy', window );">Cash, Cash Equivalents and Restricted Cash</a></td>
<td class="text"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-style:italic;font-weight:bold;visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Cash,&#160;Cash&#160;Equivalents and Restricted Cash</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The reconciliation of cash, cash equivalents and restricted cash reported within the applicable balance sheet that sum to the total of the same such amount shown in the statement of cash flows is as follows (in thousands):</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.23%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="5" style="vertical-align:bottom;white-space:nowrap;width:23.76%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">June&#160;30,&#160;</b></p></td></tr><tr><td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.71%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2021</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2020</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Cash&#160;and&#160;cash&#160;equivalents</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.23%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">139,520 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 51,885</p></td></tr><tr><td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Restricted&#160;cash&#160;(1)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.23%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">121 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 235</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Total</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.23%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">139,641 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 52,120</p></td></tr></table><div style="font-family:'Times New Roman','Times','serif';font-size:9.0pt;margin-bottom:0pt;margin-left:54pt;min-height:1.19em;position:relative;width:100%;"><div style="background-color:#000000;height:1pt;position:relative;top:0.6em;width:25.0%;border:none;margin:0 auto 0 0;"/></div><p style="font-family:'Times New Roman','Times','serif';font-size:9pt;line-height:1.19;text-align:justify;margin:0pt 0pt 0pt 54pt;">(1)&#160;&#160;&#160;&#160;Included in prepaid expenses and other current assets and other assets.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><span style="font-size:9pt;visibility:hidden;">&#8203;</span></p><span></span>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InProcessResearchAndDevelopmentPolicy', window );">Acquired In-Process Research and Development</a></td>
<td class="text"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Acquired In-Process Research and Development</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">The Company measures and recognizes asset acquisitions that are not deemed to be business combinations based on the cost to acquire the assets, which includes transaction costs. Goodwill is not recognized in asset acquisitions. In an asset acquisition, the cost allocated to acquire in-process research and development (&#8220;IPR&amp;D&#8221;) with no alternative future use is charged to expense at the acquisition date. Refer to Note 3, &#8220;Acquisition of Quellis&#8221; for a more detailed description of the accounting policy utilized for the recent asset acquisition.</p><span></span>
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<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_PreferredStockDiscountPolicyTextBlock', window );">Preferred Stock Discount</a></td>
<td class="text"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Preferred Stock Discount</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">As discussed above, in February 2021, the Company issued Series X Preferred Stock in a private placement transaction. It was determined that this transaction resulted in recognition of a beneficial conversion feature, which was valued based on the difference between the price of the shares of common stock on the date of commitment and the conversion price on the closing date, resulting in a total value of $19.6 million. Additionally, the Company incurred total issuance costs of $5.7 million related to the private placement. Both of these features were taken as a discount on Series X Preferred Stock recognized at the close of the transaction. These features are analogous to preferred dividends and are recorded as a non-cash return to holders of Series X Preferred Stock through additional paid in capital. The discount related to the beneficial conversion feature is recognized through the earliest possible date of conversion, which occurred upon the shareholder approval of the conversion in June 2021. The issuance costs are recognized as a dividend at the time of conversion to common shares. As of June 30, 2021, $24.4 million of the above amounts were accounted for as a non-cash return related to shares of Series X Preferred Stock.</p><span></span>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock', window );">Recent Accounting Pronouncements - Not Yet Adopted</a></td>
<td class="text"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Recent&#160;Accounting&#160;Pronouncements - Not Yet Adopted</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 12pt 0pt;">From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board (&#8220;FASB&#8221;) or other standard setting bodies and adopted by the Company as of the specified effective date.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">In June 2016, the FASB issued Accounting Standards Update (&#8220;ASU&#8221;) 2016-13, <i style="font-style:italic;">Financial Instruments-Credit Losses</i> (Topic 326). This standard requires a financial asset to be presented at amortized cost basis at the net amount expected to be collected. It also requires that credit losses relating to available-for-sale debt securities should be recorded through an allowance for credit losses. In November 2019, the FASB issued an amendment making this ASU effective for annual reporting periods beginning after December 15, 2022 for </p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 12pt 0pt;">smaller reporting companies, early adoption is permitted. The Company is currently evaluating the impact that this standard will have on its consolidated financial statements.</p><span></span>
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<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_SummaryOfSignificantAccountingPoliciesPoliciesTextBlock', window );">Summary of Significant Accounting Policies</a></td>
<td class="text"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Summary&#160;of Significant&#160;Accounting Policies</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The Company&#8217;s significant accounting policies are described in Note 2, &#8220;Summary of Significant Accounting Policies,&#8221; in the Company&#8217;s 2020 Annual Report on Form 10-K, and there were no significant changes to such policies in the three and six months ended June 30, 2021 that had a material impact on the Company&#8217;s results of operations or financial position.</p><span></span>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for preferred stock discount</p></div>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policies unchanged from prior annual filing.</p></div>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS).</p></div>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Entity's cash and cash equivalents accounting policy with respect to restricted balances.  Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits.</p></div>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for computing basic and diluted earnings or loss per share for each class of common stock and participating security. Addresses all significant policy factors, including any antidilutive items that have been excluded from the computation and takes into account stock dividends, splits and reverse splits that occur after the balance sheet date of the latest reporting period but before the issuance of the financial statements.</p></div>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for costs assigned to identifiable tangible and intangible assets of an acquired entity to be used in the research and development activities of the combined enterprise. An entity also may disclose the appraisal method or significant assumptions used to value acquired research and development assets.</p></div>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy pertaining to new accounting pronouncements that may impact the entity's financial reporting. Includes, but is not limited to, quantification of the expected or actual impact.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles.</p></div>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319775292008">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Organization and Operations (Tables)<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
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<tr><th class="th"><div>Jun. 30, 2021</div></th></tr>
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<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_ScheduleOfPreferredStockOrWarrantsToPurchasePreferredStockTableTextBlock', window );">Schedule of common stock warrants outstanding</a></td>
<td class="text"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">As a result of the Quellis Acquisition and the February 2021 Financing, in 2021 the Company issued the following Series X Preferred Stock or warrants to purchase Series X Preferred Stock:</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt 0pt 0pt 36pt;"><span style="margin-left:0pt;visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td 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style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:12.19%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Transaction </b></p></td></tr><tr><td style="vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.87%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Date</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:12.19%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Date</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Outstanding shares issued in merger</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 50,504</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:12.19%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 50,504,000</p></td></tr><tr><td style="vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Outstanding shares issued in February 2021 Financing</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 35,573</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:12.19%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 35,573,000</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Warrants assumed in merger</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.87%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 2,805</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:12.19%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 2,805,000</p></td></tr><tr><td style="vertical-align:bottom;width:70.98%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Total</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.46%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.87%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 88,882</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:12.19%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 88,882,000</p></td></tr></table><span></span>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319785425832">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Summary of Significant Accounting Policies (Tables)<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th"><div>Jun. 30, 2021</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccountingPoliciesAbstract', window );"><strong>Summary of Significant Accounting Policies</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock', window );">Schedule of anti-dilutive common stock equivalents excluded from calculation of diluted net loss per share</a></td>
<td class="text"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:79.99%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:14.24%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:14.21%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td colspan="3" style="vertical-align:bottom;white-space:nowrap;width:30.77%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Three and Six Months Ended June&#160;30,&#160;</b></p></td></tr><tr><td style="vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.24%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2021</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.21%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2020</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Series X Preferred Stock (1)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">32,545,203 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.21%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td></tr><tr><td style="vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Stock&#160;options</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">7,930,334 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.21%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,301,262</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:67.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Common&#160;stock&#160;warrants</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">9,183,885 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.21%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 6,193,749</p></td></tr><tr><td style="vertical-align:bottom;white-space:nowrap;width:67.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.24%;border-bottom:3px double #000000;border-top:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">49,659,422 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.31%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.21%;border-bottom:3px double #000000;border-top:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 7,495,011</p></td></tr></table><div style="font-family:'Times New Roman','Times','serif';font-size:9.0pt;margin-bottom:0pt;margin-left:54pt;min-height:1.19em;position:relative;width:100%;"><div style="background-color:#000000;height:1pt;position:relative;top:0.6em;width:25.0%;border:none;margin:0 auto 0 0;"/></div><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 54pt;">(1)&#160;&#160;&#160;&#160;Shown as common stock equivalents</p><span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTextBlock', window );">Schedule of reconciliation of cash, cash equivalents and restricted cash</a></td>
<td class="text"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The reconciliation of cash, cash equivalents and restricted cash reported within the applicable balance sheet that sum to the total of the same such amount shown in the statement of cash flows is as follows (in thousands):</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.23%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="5" style="vertical-align:bottom;white-space:nowrap;width:23.76%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">June&#160;30,&#160;</b></p></td></tr><tr><td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.71%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2021</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2020</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Cash&#160;and&#160;cash&#160;equivalents</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.23%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">139,520 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 51,885</p></td></tr><tr><td style="vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Restricted&#160;cash&#160;(1)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.23%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">121 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 235</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:73.9%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Total</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.23%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">139,641 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 52,120</p></td></tr></table><div style="font-family:'Times New Roman','Times','serif';font-size:9.0pt;margin-bottom:0pt;margin-left:54pt;min-height:1.19em;position:relative;width:100%;"><div style="background-color:#000000;height:1pt;position:relative;top:0.6em;width:25.0%;border:none;margin:0 auto 0 0;"/></div><p style="font-family:'Times New Roman','Times','serif';font-size:9pt;line-height:1.19;text-align:justify;margin:0pt 0pt 0pt 54pt;">(1)&#160;&#160;&#160;&#160;Included in prepaid expenses and other current assets and other assets.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><span style="font-size:9pt;visibility:hidden;">&#8203;</span></p><span></span>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of cash and cash equivalents restricted as to withdrawal or usage.</p></div>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319774189928">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Acquisition of Quellis (Tables)<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th"><div>Jun. 30, 2021</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_BusinessCombinationsAbstract', window );"><strong>Acquisition of Quellis</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock', window );">Schedule of net assets acquired</a></td>
<td class="text">The following table summarizes the net assets acquired based on their estimated fair values as of January 28, 2021 (in thousands):<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.8%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Acquired IPR&amp;D</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.8%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 164,612</p></td></tr><tr><td style="vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Cash and cash equivalents</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.8%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 8,307</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Prepaid expenses and other assets</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.8%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 136</p></td></tr><tr><td style="vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Accounts payable</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.8%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (1,974)</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Accrued liabilities</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.87%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.8%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (400)</p></td></tr><tr><td style="vertical-align:bottom;width:83.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Net acquired tangible assets</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.87%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.8%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 170,681</p></td></tr></table><span></span>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed. May include but not limited to the following: (a) acquired receivables; (b) contingencies recognized at the acquisition date; and (c) the fair value of noncontrolling interests in the acquiree.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 805<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=121647850&amp;loc=d3e4845-128472<br></p></div>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319771285080">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Financial Instruments (Tables)<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th"><div>Jun. 30, 2021</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueDisclosuresAbstract', window );"><strong>Financial Instruments</strong></a></td>
<td class="text">&#160;<span></span>
</td>
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<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock', window );">Schedule of assets and liabilities measured fair value on recurring basis</a></td>
<td class="text"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">Below is a summary of assets and liabilities measured at fair value on a recurring basis (in thousands):</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td colspan="11" style="vertical-align:bottom;white-space:nowrap;width:49.79%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">As of June&#160;30,&#160;2021</b></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Quoted Prices</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Significant</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Significant</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">in Active</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Observable</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Unobservable</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Markets</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Inputs</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Inputs</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">(Level 1)</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">(Level 2)</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">(Level 3)</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.65%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Total</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Assets:</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Cash and cash equivalents:</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;">Money market funds</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,841</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:middle;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,841</p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;">Reverse repurchase agreements</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 39,000</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:middle;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.17%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 39,000</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Total assets</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,841</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 39,000</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 40,841</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td colspan="11" style="vertical-align:bottom;white-space:nowrap;width:49.79%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">As of December&#160;31,&#160;2020</b></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Quoted Prices</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Significant</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Significant</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;width:10.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">in Active</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Observable</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Unobservable</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Markets</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Inputs</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Inputs</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;width:10.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">(Level 1)</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">(Level&#160;2)</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">(Level&#160;3)</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:10.65%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Total</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Assets:</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;">Cash&#160;and&#160;cash&#160;equivalents:</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 24pt;">Money&#160;market&#160;funds</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 22,999</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 22,999</p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 12pt;">Short-term&#160;investments:</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 24pt;">Reverse&#160;repurchase&#160;agreements</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 20,000</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.17%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 20,000</p></td></tr><tr><td style="vertical-align:bottom;width:47.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Total&#160;assets</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 22,999</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 20,000</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.17%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 42,999</p></td></tr></table><span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock', window );">Summary of warrant liability was valued based on significant inputs not observable in the market, which represents a Level 3</a></td>
<td class="text">The Company estimated the fair value of the warrant liability using Black-Scholes option-pricing models and assumptions that are based on the individual characteristics of the warrants on the valuation date, as well as assumptions including the fair value per share of the underlying security, the remaining contractual term of the warrant, risk-free interest rate, expected dividend yield and expected volatility of the price of the underlying security (in thousands).<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.7%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.32%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">June 30, 2021</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Balance at beginning of year</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td></tr><tr><td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Issuance of warrants</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 4,332</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">(Decrease) increase in the fair value of the warrants</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (864)</p></td></tr><tr><td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Reclassification of warrant liability to additional paid-in capital</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.62%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"> (3,468)</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Ending balance</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.7%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.62%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td></tr></table><span></span>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319769654872">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Short-Term Investments (Tables)<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
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<tr><th class="th"><div>Jun. 30, 2021</div></th></tr>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShortTermInvestmentsAbstract', window );"><strong>Short-Term Investments</strong></a></td>
<td class="text">&#160;<span></span>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_MarketableSecuritiesTextBlock', window );">Schedule of short term investments</a></td>
<td class="text"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The Company did not hold any short-term investments at June 30, 2021. The following table summarizes the short-term investments held at December 31, 2020 (in thousands):</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><div 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style="vertical-align:bottom;white-space:nowrap;width:10.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div 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style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.2%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"><p 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style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Gross&#160;Unrealized</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" 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Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.62%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Amortized&#160;Cost</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Gains</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Losses</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.58%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Fair&#160;Value</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><b style="font-weight:bold;">December 31, 2020</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.2%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Reverse&#160;repurchase&#160;agreements</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.24%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 20,000</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.2%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 20,000</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:44.88%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;">Total</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.24%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 20,000</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.17%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.37%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.2%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 20,000</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><span></span>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319774753752">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Accrued Expenses (Tables)<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th"><div>Jun. 30, 2021</div></th></tr>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccruedLiabilitiesAndOtherLiabilitiesAbstract', window );"><strong>Accrued Expenses</strong></a></td>
<td class="text">&#160;<span></span>
</td>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock', window );">Schedule of accrued expenses</a></td>
<td class="text"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">Accrued expenses consisted of the following (in thousands):</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:79.99%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.02%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">June&#160;30,&#160;</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.02%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">December&#160;31,&#160;</b></p></td></tr><tr><td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.02%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2021</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;">&#160;&#160;&#160;&#160;</p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.02%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2020</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Accrued&#160;compensation</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">1,018 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,719</p></td></tr><tr><td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Accrued contracted research costs</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">790 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,726</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Accrued professional fees</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">663 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 356</p></td></tr><tr><td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Accrued other</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">180 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.42%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Accrued severance</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">63 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.42%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 396</p></td></tr><tr><td style="vertical-align:bottom;width:71.43%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Total</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.42%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.6%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">2,714 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.42%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.6%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 4,197</p></td></tr></table><span></span>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319778576568">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Stockholders' Equity (Tables)<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th"><div>Jun. 30, 2021</div></th></tr>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquityNoteAbstract', window );"><strong>Stockholders' Equity</strong></a></td>
<td class="text">&#160;<span></span>
</td>
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<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock', window );">Summary of Series X preferred stock or warrants to purchase</a></td>
<td class="text"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;">The following table presents information about warrants that are issued and outstanding at June 30, 2021: &#160;</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:18pt;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:32.95%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><b style="font-weight:bold;">Year Issued</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:15.4%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Equity Instrument</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:18.06%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Warrants&#160;Outstanding</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.43%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Exercise&#160;Price</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.72%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Date&#160;of&#160;Expiration</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">2014</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"> Common Stock </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">1,227 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">122.12 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">8/26/2021</p></td></tr><tr><td style="vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">2015</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"> Common Stock </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">1,227 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">122.12 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">3/30/2022</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">2018</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"> Common Stock </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">4,199,995 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">12.00 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">6/21/2023</p></td></tr><tr><td style="vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">2019</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"> Common Stock </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">1,991,300 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">6.25 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">2/7/2024</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">2021</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"> Common Stock </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.06%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">2,990,136 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">0.35 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">12/14/2030</p></td></tr><tr><td style="vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Total</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:18.06%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">9,183,885 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;&#160;</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Weighted average exercise price</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">6.99 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;&#160;</p></td></tr><tr><td style="vertical-align:bottom;width:32.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Weighted average life in years</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:15.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:18.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">&#160;&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">4.55 </p></td></tr></table><span></span>
</td>
</tr>
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<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=120381028&amp;loc=d3e5047-113901<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 50<br> -Section S99<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6784392&amp;loc=d3e188667-122775<br></p></div>
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<td><strong> Name:</strong></td>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319769940120">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Reserved For Future Issuance (Tables)<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th"><div>Jun. 30, 2021</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_CommonStockReservedForFutureIssuanceAbstract', window );"><strong>Reserved for Future Issuance</strong></a></td>
<td class="text">&#160;<span></span>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfStockByClassTextBlock', window );">Schedule of common stock reserved for future issuance</a></td>
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style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:11.12%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:11.26%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:9pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:9pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.12%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">June&#160;30,&#160;</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.26%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">December&#160;31,&#160;</b></p></td></tr><tr><td style="vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:9pt;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:9pt;line-height:1.19;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';">&#160;&#160;&#160;&#160;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.12%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2021</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';">&#160;&#160;&#160;&#160;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.26%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">2020</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Warrants&#160;for&#160;the&#160;purchase&#160;of&#160;common&#160;stock</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">9,183,885 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 6,193,749</p></td></tr><tr><td style="vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New 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3pt 0pt 0pt;"> 1,367,667</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Options&#160;available&#160;for&#160;future&#160;issuance&#160;to&#160;purchase&#160;common&#160;stock</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">1,697,308 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,936,173</p></td></tr><tr><td style="vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Shares&#160;reserved&#160;for&#160;the&#160;employee&#160;stock&#160;purchase&#160;plan</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.12%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">185,421 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.26%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 148,951</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:73.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Total</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.12%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">18,996,948 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.26%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 9,646,540</p></td></tr></table><span></span>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319769983192">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Stock Incentive Plans (Tables)<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th"><div>Jun. 30, 2021</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract', window );"><strong>Stock Incentive Plans</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock', window );">Summary of stock option activity</a></td>
<td class="text"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Weighted</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Average</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Weighted-</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Remaining</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Aggregate</b></p></td></tr><tr><td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Average Exercise</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Contractual</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Intrinsic Value</b></p></td></tr><tr><td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><b style="font-family:'Calibri','Helvetica','sans-serif';font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.52%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">Shares</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><b style="font-family:'Calibri','Helvetica','sans-serif';font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">&#160;Price</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><b style="font-family:'Calibri','Helvetica','sans-serif';font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;"> Term (years)</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;margin:0pt;"><b style="font-family:'Calibri','Helvetica','sans-serif';font-weight:bold;">&#160;&#160;&#160;&#160;</b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:11.93%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;">(in&#160;thousands)</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Outstanding&#160;at&#160;December&#160;31,&#160;2020</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,367,667</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">11.38</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">8.13</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> &#8212;</p></td></tr><tr><td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Granted</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 6,447,000</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">2.74</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Assumed in Quellis Acquisition</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">332,494 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">0.29</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Cancelled&#160;or&#160;forfeited</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.52%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(208,152)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">8.71</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"> <span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"> <span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 6pt;">Expired</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.52%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;">(8,675)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">16.70</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td></tr><tr><td style="vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Outstanding&#160;at&#160;June 30, 2021</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.52%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">7,930,334 </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">3.96</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">9.44</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 662</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:46.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Vested&#160;and&#160;exercisable&#160;at&#160;June 30, 2021</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.52%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">770,141 </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">14.07</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;">7.31</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt 3pt 0pt 0pt;"> 207</p></td></tr></table><span></span>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.</p></div>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319766838168">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Organization and Operations - Agreement and Plan of Merger (Details) - USD ($)<br> $ / shares in Units, $ in Millions</strong></div></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1">6 Months Ended</th>
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<tr>
<th class="th"><div>Jan. 28, 2021</div></th>
<th class="th"><div>Jun. 30, 2021</div></th>
<th class="th"><div>Jun. 02, 2021</div></th>
<th class="th"><div>Dec. 31, 2020</div></th>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockParOrStatedValuePerShare', window );">Common stock, par value (in dollars per share)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 0.001<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 0.001<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementClassOfStockAxis=catb_SeriesXRedeemableConvertiblePreferredStockMember', window );">Series X redeemable convertible preferred stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_AgreementAndPlanOfMergerAbstract', window );"><strong>Agreement and Plan of Merger</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_TemporaryEquityStockIssuedInAcquisitionSharesNewIssues', window );">Issuance of preferred stock upon acquisition of Quellis (in shares)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">50,504<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementEquityComponentsAxis=us-gaap_CommonStockMember', window );">Common Stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_AgreementAndPlanOfMergerAbstract', window );"><strong>Agreement and Plan of Merger</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodSharesAcquisitions', window );">Shares issued on acquisition (in shares)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">3,332,669<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementEquityComponentsAxis=us-gaap_CommonStockMember', window );">Common Stock | Series X redeemable convertible preferred stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_AgreementAndPlanOfMergerAbstract', window );"><strong>Agreement and Plan of Merger</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights', window );">Warrants to purchase number of shares</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">2,805,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1', window );">Exercise Price (in dollars per share)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 0.35<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_BusinessAcquisitionAxis=catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember', window );">Quellis Biosciences, Inc | Series X redeemable convertible preferred stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_AgreementAndPlanOfMergerAbstract', window );"><strong>Agreement and Plan of Merger</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_TemporaryEquityStockIssuedInAcquisitionSharesNewIssues', window );">Issuance of preferred stock upon acquisition of Quellis (in shares)</a></td>
<td class="nump">50,504<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_TemporaryEquityConversionValue', window );">Conversion value on closing date</a></td>
<td class="nump">$ 122.7<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights', window );">Warrants to purchase number of shares</a></td>
<td class="nump">2,805<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1', window );">Exercise Price (in dollars per share)</a></td>
<td class="nump">$ 341.70<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_BusinessAcquisitionAxis=catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember', window );">Quellis Biosciences, Inc | Common Stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_AgreementAndPlanOfMergerAbstract', window );"><strong>Agreement and Plan of Merger</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodSharesAcquisitions', window );">Shares issued on acquisition (in shares)</a></td>
<td class="nump">3,332,669<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockParOrStatedValuePerShare', window );">Common stock, par value (in dollars per share)</a></td>
<td class="nump">$ 0.001<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionGross', window );">Number of options assumed in Quellis Acquisition</a></td>
<td class="nump">332,494<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights', window );">Warrants to purchase number of shares</a></td>
<td class="nump">185,136<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1', window );">Exercise Price (in dollars per share)</a></td>
<td class="nump">$ 0.35<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_AgreementAndPlanOfMergerAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_AgreementAndPlanOfMergerAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionGross">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Gross number of share options (or share units) assumed in acquisition during the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionGross</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_TemporaryEquityConversionValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The conversion value of temporary equity shares on the merger closing date.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_TemporaryEquityConversionValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_TemporaryEquityStockIssuedInAcquisitionSharesNewIssues">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of new shares classified as temporary equity issued in an acquisition during the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_TemporaryEquityStockIssuedInAcquisitionSharesNewIssues</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Exercise price per share or per unit of warrants or rights outstanding.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=109259400&amp;loc=d3e21475-112644<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=109259400&amp;loc=d3e21475-112644<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommonStockParOrStatedValuePerShare">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Face amount or stated value per share of common stock.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommonStockParOrStatedValuePerShare</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of shares of stock issued during the period pursuant to acquisitions.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI http://asc.fasb.org/extlink&amp;oid=120397183&amp;loc=d3e187085-122770<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319772055368">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Organization and Operations - Stock Purchase Agreement and Series X Preferred Stock (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1">6 Months Ended</th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
</tr>
<tr>
<th class="th"><div>Jun. 30, 2021</div></th>
<th class="th"><div>Jun. 02, 2021</div></th>
<th class="th"><div>Jan. 28, 2021</div></th>
<th class="th"><div>Jun. 30, 2021</div></th>
<th class="th"><div>Feb. 28, 2021</div></th>
<th class="th"><div>Dec. 31, 2020</div></th>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_StockPurchaseAgreementAndSeriesXPreferredStockAbstract', window );"><strong>Stock Purchase Agreement and Series X Preferred Stock</strong></a></td>
<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
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</tr>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ProceedsFromIssuanceOfPrivatePlacement', window );">Net proceeds from issuance of private placement</a></td>
<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">88,882<span></span>
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<td class="text">&#160;<span></span>
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<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_PreferredStockConvertibleSharesIssuable', window );">Common Stock Issuable Upon Conversion at Transaction Date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="nump">88,882,000<span></span>
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<td class="text">&#160;<span></span>
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<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_PercentageOfOwnershipOnCommonStockIssuedAndOutstandingImmediatelyAfterConversionInitially', window );">Percentage of beneficial ownership initially, after conversion</a></td>
<td class="nump">9.99%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">9.99%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_srt_RangeAxis=srt_MinimumMember', window );">Minimum</a></td>
<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_StockPurchaseAgreementAndSeriesXPreferredStockAbstract', window );"><strong>Stock Purchase Agreement and Series X Preferred Stock</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_PercentageOfOwnershipOnCommonStockIssuedAndOutstandingImmediatelyAfterConversionThereafter', window );">Percentage of beneficial ownership thereafter, after conversion</a></td>
<td class="nump">4.99%<span></span>
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<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
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<td class="nump">4.99%<span></span>
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<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_StockPurchaseAgreementAndSeriesXPreferredStockAbstract', window );"><strong>Stock Purchase Agreement and Series X Preferred Stock</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_PercentageOfOwnershipOnCommonStockIssuedAndOutstandingImmediatelyAfterConversionThereafter', window );">Percentage of beneficial ownership thereafter, after conversion</a></td>
<td class="nump">19.99%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">19.99%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
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<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_BusinessAcquisitionAxis=catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember', window );">Quellis Biosciences, Inc | Stock Purchase Agreement</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_StockPurchaseAgreementAndSeriesXPreferredStockAbstract', window );"><strong>Stock Purchase Agreement and Series X Preferred Stock</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature', window );">Beneficial conversion feature</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
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<td class="nump">$ 19,600<span></span>
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<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
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</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementClassOfStockAxis=catb_SeriesXRedeemableConvertiblePreferredStockMember', window );">Series X redeemable convertible preferred stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_StockPurchaseAgreementAndSeriesXPreferredStockAbstract', window );"><strong>Stock Purchase Agreement and Series X Preferred Stock</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodSharesNewIssues', window );">Issuance of preferred stock in a private offering of public equity, net of issuance costs (in shares)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">35,573<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_TemporaryEquityConversionBasis', window );">Number of shares of common stock into which each share of Series X Preferred Stock may be converted</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_StockIssuedDuringPeriodSharesIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares', window );">Conversion of preferred stock into common stock (in shares)</a></td>
<td class="nump">53,532<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities', window );">Issuance of common stock upon the conversion of preferred stock (in shares)</a></td>
<td class="nump">53,531,797<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockSharesOutstanding', window );">Preferred stock, outstanding (in shares)</a></td>
<td class="nump">32,545<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">32,545<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementClassOfStockAxis=catb_SeriesXRedeemableConvertiblePreferredStockMember', window );">Series X redeemable convertible preferred stock | Quellis Biosciences, Inc</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_StockPurchaseAgreementAndSeriesXPreferredStockAbstract', window );"><strong>Stock Purchase Agreement and Series X Preferred Stock</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_TemporaryEquityConversionBasis', window );">Number of shares of common stock into which each share of Series X Preferred Stock may be converted</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementClassOfStockAxis=catb_SeriesXRedeemableConvertiblePreferredStockMember', window );">Series X redeemable convertible preferred stock | Quellis Biosciences, Inc | Stock Purchase Agreement</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_StockPurchaseAgreementAndSeriesXPreferredStockAbstract', window );"><strong>Stock Purchase Agreement and Series X Preferred Stock</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodSharesNewIssues', window );">Issuance of preferred stock in a private offering of public equity, net of issuance costs (in shares)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">35,573<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodGrossValue', window );">Gross proceeds from issuance of preferred stock in a private offering</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 110,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ProceedsFromIssuanceOfPrivatePlacement', window );">Net proceeds from issuance of private placement</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">104,300<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PaymentsOfStockIssuanceCosts', window );">Issuance costs</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 5,700<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementClassOfStockAxis=catb_SharesIssuedInMergerMember', window );">Outstanding shares issued in merger</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_StockPurchaseAgreementAndSeriesXPreferredStockAbstract', window );"><strong>Stock Purchase Agreement and Series X Preferred Stock</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_TemporaryEquitySharesOutstanding', window );">Series X Preferred Stock at Transaction Date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">50,504<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_PreferredStockConvertibleSharesIssuable', window );">Common Stock Issuable Upon Conversion at Transaction Date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">50,504,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementClassOfStockAxis=catb_SharesIssuedIn2021FinancingMember', window );">Outstanding shares issued in February 2021 Financing</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_StockPurchaseAgreementAndSeriesXPreferredStockAbstract', window );"><strong>Stock Purchase Agreement and Series X Preferred Stock</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_TemporaryEquitySharesOutstanding', window );">Series X Preferred Stock at Transaction Date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">35,573<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_PreferredStockConvertibleSharesIssuable', window );">Common Stock Issuable Upon Conversion at Transaction Date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">35,573,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementClassOfStockAxis=catb_WarrantsAssumedInMergerMember', window );">Warrants assumed in merger</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_StockPurchaseAgreementAndSeriesXPreferredStockAbstract', window );"><strong>Stock Purchase Agreement and Series X Preferred Stock</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_TemporaryEquitySharesOutstanding', window );">Series X Preferred Stock at Transaction Date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">2,805<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_PreferredStockConvertibleSharesIssuable', window );">Common Stock Issuable Upon Conversion at Transaction Date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">2,805,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_PercentageOfOwnershipOnCommonStockIssuedAndOutstandingImmediatelyAfterConversionInitially">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Percentage of beneficial ownership common stock issued and outstanding immediately after giving effect to such conversion initially considered for prohibiting from converting shares of Series X Preferred Stock into shares of the Company's common stock.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_PercentageOfOwnershipOnCommonStockIssuedAndOutstandingImmediatelyAfterConversionInitially</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_PercentageOfOwnershipOnCommonStockIssuedAndOutstandingImmediatelyAfterConversionThereafter">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Percentage of beneficial ownership common stock issued and outstanding immediately after giving effect to such conversion thereafter considered for prohibiting from converting shares of Series X Preferred Stock into shares of the Company's common stock.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_PercentageOfOwnershipOnCommonStockIssuedAndOutstandingImmediatelyAfterConversionThereafter</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_PreferredStockConvertibleSharesIssuable">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of common shares issuable upon conversion of preferred stock.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_PreferredStockConvertibleSharesIssuable</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_StockIssuedDuringPeriodSharesIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The increase (decrease) in number of shares issued during the period upon the conversion of preferred shares into common shares.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_StockIssuedDuringPeriodSharesIncreaseDecreaseDueToConversionOfPreferredSharesIntoCommonShares</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_StockPurchaseAgreementAndSeriesXPreferredStockAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_StockPurchaseAgreementAndSeriesXPreferredStockAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_TemporaryEquityConversionBasis">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The number of shares of common stock into which each share of Series X Preferred Stock may be converted.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_TemporaryEquityConversionBasis</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodGrossValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Gross value of new stock classified as temporary equity issued in a private offering during the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodGrossValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodSharesNewIssues">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of new shares classified as temporary equity issued in a private offering during the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_TemporaryEquityStockIssuedInPrivateOfferingDuringPeriodSharesNewIssues</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of increase (decrease) in additional paid in capital (APIC) resulting from recognition of deferred taxes for convertible debt with a beneficial conversion feature.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI http://asc.fasb.org/extlink&amp;oid=120397183&amp;loc=d3e187085-122770<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=109259400&amp;loc=d3e21463-112644<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 55<br> -Paragraph 51<br> -URI http://asc.fasb.org/extlink&amp;oid=121610041&amp;loc=d3e34017-109320<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature</td>
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The cash outflow for cost incurred directly with the issuance of an equity security.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 15<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3291-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PreferredStockSharesOutstanding</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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<td><strong> Period Type:</strong></td>
<td>instant</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 14<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3255-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ProceedsFromIssuanceOfPrivatePlacement</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>debit</td>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
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</table></div>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of shares issued during the period as a result of the conversion of convertible securities.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI http://asc.fasb.org/extlink&amp;oid=120397183&amp;loc=d3e187085-122770<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.29-30)<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=109259400&amp;loc=d3e21475-112644<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=109259400&amp;loc=d3e21463-112644<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The number of securities classified as temporary equity that have been issued and are held by the entity's shareholders. Securities outstanding equals securities issued minus securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(27)(b))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_TemporaryEquitySharesOutstanding</td>
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<td>us-gaap_</td>
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<td>xbrli:sharesItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_BusinessAcquisitionAxis=catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SubsidiarySaleOfStockAxis=catb_StockPurchaseAgreementInstitutionalAndAccreditedInvestorsMember</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
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<td>na</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
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<tr>
<td><strong> Period Type:</strong></td>
<td></td>
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</table></div>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementClassOfStockAxis=catb_SeriesXRedeemableConvertiblePreferredStockMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementClassOfStockAxis=catb_SeriesXRedeemableConvertiblePreferredStockMember</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<td></td>
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<td></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
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<td style="white-space:nowrap;">us-gaap_StatementClassOfStockAxis=catb_SharesIssuedIn2021FinancingMember</td>
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<td>na</td>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319775157512">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Organization and Operations - January 2020 Financing (Details) - January 2020 Financing<br> $ / shares in Units, $ in Millions</strong></div></th>
<th class="th" colspan="1">1 Months Ended</th>
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<div>Jan. 31, 2020 </div>
<div>USD ($) </div>
<div>$ / shares </div>
<div>shares</div>
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<td class="nump">$ 26.5<span></span>
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</tr>
<tr class="re">
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<td class="nump">$ 24.6<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SubsidiarySaleOfStockAxis=catb_UnderwritingPublicOffering2020Member', window );">Common Stock</a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_January2020FinancingAbstract', window );"><strong>January 2020 Financing</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodSharesNewIssues', window );">Number of shares issued | shares</a></td>
<td class="nump">5,290,000<span></span>
</td>
</tr>
<tr class="re">
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<td class="nump">$ 5.00<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SubsidiarySaleOfStockAxis=catb_UnderwritingPublicOffering2020Member', window );">Oppenheimer &amp; Co. Inc</a></td>
<td class="text">&#160;<span></span>
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</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_January2020FinancingAbstract', window );"><strong>January 2020 Financing</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodSharesNewIssues', window );">Number of shares issued | shares</a></td>
<td class="nump">690,000<span></span>
</td>
</tr>
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_January2020FinancingAbstract</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The cash inflow from the additional capital contribution to the entity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 14<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3255-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ProceedsFromIssuanceOfCommonStock</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Cash received on stock transaction after deduction of issuance costs.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Per share or per unit amount of equity securities issued.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of new stock issued during the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=109259400&amp;loc=d3e21463-112644<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI http://asc.fasb.org/extlink&amp;oid=120397183&amp;loc=d3e187085-122770<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319767695016">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Organization and Operations - Liquidity (Details) - USD ($)<br> $ / shares in Units, $ in Thousands</strong></div></th>
<th class="th" colspan="1">3 Months Ended</th>
<th class="th" colspan="2">6 Months Ended</th>
<th class="th" colspan="1"></th>
</tr>
<tr>
<th class="th"><div>Jun. 30, 2020</div></th>
<th class="th"><div>Jun. 30, 2021</div></th>
<th class="th"><div>Jun. 30, 2020</div></th>
<th class="th"><div>Dec. 31, 2020</div></th>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfStockLineItems', window );"><strong>Common Stock</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RetainedEarningsAccumulatedDeficit', window );">Accumulated deficit</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="num">$ (438,447)<span></span>
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<td class="text">&#160;<span></span>
</td>
<td class="num">$ (260,897)<span></span>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashAndCashEquivalentsAtCarryingValue', window );">Cash and cash equivalents</a></td>
<td class="nump">$ 51,885<span></span>
</td>
<td class="nump">$ 139,520<span></span>
</td>
<td class="nump">$ 51,885<span></span>
</td>
<td class="nump">$ 24,930<span></span>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_srt_CounterpartyNameAxis=catb_CowenAndCompanyLLCMember', window );">Cowen</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfStockLineItems', window );"><strong>Common Stock</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_PercentageOfCommissionPaidToUnderwriterBasedOnProceedsFromOffering', window );">Percentage of commission paid to underwriter based on proceeds from common stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">3.00%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_srt_CounterpartyNameAxis=catb_JefferiesMember', window );">Jefferies</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfStockLineItems', window );"><strong>Common Stock</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_RemainingAvailableUnderCurrentSalesAgreement', window );">Remaining available under sales agreement</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 25,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_srt_CounterpartyNameAxis=catb_JefferiesMember', window );">Jefferies | ATM</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfStockLineItems', window );"><strong>Common Stock</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_CommonStockSaleAgreementValue', window );">Maximum aggregate value of common shares which can be issued under the agreement</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">25,000<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
</td>
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<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementEquityComponentsAxis=us-gaap_CommonStockMember', window );">Common Stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfStockLineItems', window );"><strong>Common Stock</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_StockIssuedDuringPeriodSharesNewIssuesAtMarketOfferings', window );">Issuance of common stock for at-the-market offerings (in shares)</a></td>
<td class="nump">926,429<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1,100,001<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementEquityComponentsAxis=us-gaap_CommonStockMember', window );">Common Stock | ATM</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfStockLineItems', window );"><strong>Common Stock</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_StockIssuedDuringPeriodSharesNewIssuesAtMarketOfferings', window );">Issuance of common stock for at-the-market offerings (in shares)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1,100,001<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SharesIssuedPricePerShare', window );">Share price (in dollars per share)</a></td>
<td class="nump">$ 6.87<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 6.87<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ProceedsFromIssuanceOfCommonStock', window );">Proceeds from public offering, net of issuance costs</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 7,300<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_CommonStockSaleAgreementValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The aggregate value of common stock authorized to be issued under the terms of an open market sale agreement.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_CommonStockSaleAgreementValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_PercentageOfCommissionPaidToUnderwriterBasedOnProceedsFromOffering">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Percentage of commission paid to underwriters based on proceeds from offering.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_PercentageOfCommissionPaidToUnderwriterBasedOnProceedsFromOffering</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_RemainingAvailableUnderCurrentSalesAgreement">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of remaining available under its current sales agreement.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_RemainingAvailableUnderCurrentSalesAgreement</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_StockIssuedDuringPeriodSharesNewIssuesAtMarketOfferings">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of new stock issued in At-the-Market offerings during the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_StockIssuedDuringPeriodSharesNewIssuesAtMarketOfferings</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CashAndCashEquivalentsAtCarryingValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 4<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3044-108585<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=121566466&amp;loc=d3e6676-107765<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.1)<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CashAndCashEquivalentsAtCarryingValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ClassOfStockLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ClassOfStockLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ProceedsFromIssuanceOfCommonStock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The cash inflow from the additional capital contribution to the entity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 14<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3255-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ProceedsFromIssuanceOfCommonStock</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RetainedEarningsAccumulatedDeficit">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The cumulative amount of the reporting entity's undistributed earnings or deficit.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(30)(a)(3))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 65<br> -Paragraph 15<br> -Subparagraph (g)(2)<br> -URI http://asc.fasb.org/extlink&amp;oid=121322162&amp;loc=SL121327923-165333<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(a)(23)(a)(4))<br> -URI http://asc.fasb.org/extlink&amp;oid=120400017&amp;loc=d3e572229-122910<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 40<br> -Section 65<br> -Paragraph 2<br> -Subparagraph (h)(2)<br> -URI http://asc.fasb.org/extlink&amp;oid=121370832&amp;loc=SL117420844-207641<br><br>Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI http://asc.fasb.org/extlink&amp;oid=120397183&amp;loc=d3e187085-122770<br><br>Reference 6: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 40<br> -Section 65<br> -Paragraph 2<br> -Subparagraph (g)(2)(i)<br> -URI http://asc.fasb.org/extlink&amp;oid=121370832&amp;loc=SL117420844-207641<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RetainedEarningsAccumulatedDeficit</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SharesIssuedPricePerShare">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Per share or per unit amount of equity securities issued.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SharesIssuedPricePerShare</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_CounterpartyNameAxis=catb_CowenAndCompanyLLCMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_CounterpartyNameAxis=catb_CowenAndCompanyLLCMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_CounterpartyNameAxis=catb_JefferiesMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_CounterpartyNameAxis=catb_JefferiesMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SubsidiarySaleOfStockAxis=catb_AtMarketOfferingMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SubsidiarySaleOfStockAxis=catb_AtMarketOfferingMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementEquityComponentsAxis=us-gaap_CommonStockMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementEquityComponentsAxis=us-gaap_CommonStockMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
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<DOCUMENT>
<TYPE>XML
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<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<body>
<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319779171864">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Summary of Significant Accounting Policies - Net Loss Per Share (Details) - shares<br></strong></div></th>
<th class="th" colspan="2">3 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Jun. 30, 2021</div></th>
<th class="th"><div>Jun. 30, 2020</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems', window );"><strong>Antidilutive common stock equivalents excluded from computation of diluted net loss per share</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount', window );">Anti-dilutive securities excluded from the calculation of diluted net loss per share (in shares)</a></td>
<td class="nump">49,659,422<span></span>
</td>
<td class="nump">7,495,011<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis=catb_SeriesXPreferredStockMember', window );">Series X Preferred Stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems', window );"><strong>Antidilutive common stock equivalents excluded from computation of diluted net loss per share</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount', window );">Anti-dilutive securities excluded from the calculation of diluted net loss per share (in shares)</a></td>
<td class="nump">32,545,203<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis=us-gaap_EmployeeStockOptionMember', window );">Stock options</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems', window );"><strong>Antidilutive common stock equivalents excluded from computation of diluted net loss per share</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount', window );">Anti-dilutive securities excluded from the calculation of diluted net loss per share (in shares)</a></td>
<td class="nump">7,930,334<span></span>
</td>
<td class="nump">1,301,262<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis=catb_CommonStockWarrantsMember', window );">Warrants for the purchase of common stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems', window );"><strong>Antidilutive common stock equivalents excluded from computation of diluted net loss per share</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount', window );">Anti-dilutive securities excluded from the calculation of diluted net loss per share (in shares)</a></td>
<td class="nump">9,183,885<span></span>
</td>
<td class="nump">6,193,749<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount">
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=6371337&amp;loc=d3e3550-109257<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount</td>
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis=us-gaap_EmployeeStockOptionMember</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis=catb_CommonStockWarrantsMember</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<DOCUMENT>
<TYPE>XML
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<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<body>
<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319786058952">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Summary of Significant Accounting Policies - Cash, Cash Equivalents and Restricted Cash (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th"><div>Jun. 30, 2021</div></th>
<th class="th"><div>Dec. 31, 2020</div></th>
<th class="th"><div>Jun. 30, 2020</div></th>
<th class="th"><div>Dec. 31, 2019</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccountingPoliciesAbstract', window );"><strong>Summary of Significant Accounting Policies</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashAndCashEquivalentsAtCarryingValue', window );">Cash and cash equivalents</a></td>
<td class="nump">$ 139,520<span></span>
</td>
<td class="nump">$ 24,930<span></span>
</td>
<td class="nump">$ 51,885<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RestrictedCashAndCashEquivalents', window );">Restricted cash</a></td>
<td class="nump">121<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">235<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents', window );">Total</a></td>
<td class="nump">$ 139,641<span></span>
</td>
<td class="nump">$ 25,051<span></span>
</td>
<td class="nump">$ 52,120<span></span>
</td>
<td class="nump">$ 10,376<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccountingPoliciesAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccountingPoliciesAbstract</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Balance Type:</strong></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CashAndCashEquivalentsAtCarryingValue">
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 4<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3044-108585<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=121566466&amp;loc=d3e6676-107765<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.1)<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CashAndCashEquivalentsAtCarryingValue</td>
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<td><strong> Balance Type:</strong></td>
<td>debit</td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 24<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3521-108585<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 4<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3044-108585<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -URI http://asc.fasb.org/extlink&amp;oid=121583591&amp;loc=SL98516268-108586<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
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<tr>
<td><strong> Period Type:</strong></td>
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</div></td></tr>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of cash and cash equivalents restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(a)(2))<br> -URI http://asc.fasb.org/extlink&amp;oid=120400017&amp;loc=d3e572229-122910<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(1))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -URI http://asc.fasb.org/extlink&amp;oid=121583591&amp;loc=SL98516268-108586<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(1)(a))<br> -URI http://asc.fasb.org/extlink&amp;oid=120398452&amp;loc=d3e534808-122878<br><br>Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 4<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3044-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
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<td style="white-space:nowrap;">us-gaap_RestrictedCashAndCashEquivalents</td>
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<head>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319775093432">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Summary of Significant Accounting Policies - Preferred Stock Discount (Details) - Private Placement - Series X redeemable convertible preferred stock<br> $ in Millions</strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th">
<div>Jun. 30, 2021 </div>
<div>USD ($)</div>
</th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems', window );"><strong>Antidilutive Common Stock Equivalents Excluded from Computation of Diluted Net Loss Per Share</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature', window );">Beneficial conversion feature</a></td>
<td class="nump">$ 19.6<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PaymentsOfStockIssuanceCosts', window );">Issuance costs</a></td>
<td class="nump">5.7<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_NonCashReturnRelatedToCommonStock', window );">Non cash return</a></td>
<td class="nump">$ 24.4<span></span>
</td>
</tr>
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount of Non Cash Return Related To Common Stock</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_NonCashReturnRelatedToCommonStock</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
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<td><strong> Balance Type:</strong></td>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of increase (decrease) in additional paid in capital (APIC) resulting from recognition of deferred taxes for convertible debt with a beneficial conversion feature.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI http://asc.fasb.org/extlink&amp;oid=120397183&amp;loc=d3e187085-122770<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=109259400&amp;loc=d3e21463-112644<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 55<br> -Paragraph 51<br> -URI http://asc.fasb.org/extlink&amp;oid=121610041&amp;loc=d3e34017-109320<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Period Type:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The cash outflow for cost incurred directly with the issuance of an equity security.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 15<br> -URI http://asc.fasb.org/extlink&amp;oid=121586364&amp;loc=d3e3291-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
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<link rel="stylesheet" type="text/css" href="report.css">
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319771575624">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Acquisition of Quellis (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Jun. 02, 2021</div></th>
<th class="th"><div>Jan. 28, 2021</div></th>
<th class="th"><div>Jun. 30, 2021</div></th>
</tr>
<tr class="rh">
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<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_BusinessAcquisitionLineItems', window );"><strong>Acquisition of Quellis</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodSharesAcquisitions', window );">Issuance of common stock upon acquisition of Quellis (in shares)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">3,332,669<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_BusinessAcquisitionAxis=catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember', window );">Quellis Biosciences, Inc</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_BusinessAcquisitionLineItems', window );"><strong>Acquisition of Quellis</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherThanIntangibleAssetsAndDeferredTaxLiabilities', window );">Cost to acquire the assets</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 170,681<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AcquisitionCosts', window );">Acquisition costs</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 1,800<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_BusinessAcquisitionAxis=catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember', window );">Quellis Biosciences, Inc | Common Stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_BusinessAcquisitionLineItems', window );"><strong>Acquisition of Quellis</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
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<td class="text">&#160;<span></span>
</td>
<td class="nump">3,332,669<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
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<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_BusinessAcquisitionLineItems', window );"><strong>Acquisition of Quellis</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
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<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">50,504<span></span>
</td>
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<tr class="ro">
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<td class="nump">1,000<span></span>
</td>
<td class="text">&#160;<span></span>
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<td class="nump">1,000<span></span>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementClassOfStockAxis=catb_SeriesXRedeemableConvertiblePreferredStockMember', window );">Series X redeemable convertible preferred stock | Quellis Biosciences, Inc</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_BusinessAcquisitionLineItems', window );"><strong>Acquisition of Quellis</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
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<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_TemporaryEquityStockIssuedInAcquisitionSharesNewIssues', window );">Issuance of preferred stock upon acquisition of Quellis (in shares)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">50,504<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
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<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_TemporaryEquityConversionBasis', window );">Number of shares of common stock into which each share of Series X Preferred Stock may be converted</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The capitalized costs incurred during the period (excluded from amortization) to purchase, lease or otherwise acquire an unproved property, including costs of lease bonuses and options to purchase or lease properties, the portion of costs applicable to minerals when land including mineral rights is purchased in fee, brokers' fees, recording fees, legal costs, and other costs incurred in acquiring properties.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 932<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-10(c)(7)(ii))<br> -URI http://asc.fasb.org/extlink&amp;oid=120398226&amp;loc=d3e511914-122862<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 932<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-10(c)(3)(ii)(A))<br> -URI http://asc.fasb.org/extlink&amp;oid=120398226&amp;loc=d3e511914-122862<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of shares of stock issued during the period pursuant to acquisitions.</p></div>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
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<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_BusinessAcquisitionAxis=catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319774536072">
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<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Acquisition of Quellis - Net assets acquired based on their estimated fair values (Details) - Quellis Biosciences, Inc<br> $ in Thousands</strong></div></th>
<th class="th">
<div>Jan. 28, 2021 </div>
<div>USD ($)</div>
</th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_BusinessAcquisitionLineItems', window );"><strong>Acquisition of Quellis</strong></a></td>
<td class="text">&#160;<span></span>
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<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAcquiredResearchAndDevelopment', window );">Acquired IPR&amp;D</a></td>
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<td class="nump">8,307<span></span>
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<td class="nump">136<span></span>
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<td class="num">(1,974)<span></span>
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<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccruedLiabilities', window );">Accrued liabilities</a></td>
<td class="num">(400)<span></span>
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<tr class="reu">
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<td class="nump">$ 170,681<span></span>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of accrued liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAcquiredResearchAndDevelopment">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Acquired Research and Development</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAcquiredResearchAndDevelopment</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherThanIntangibleAssetsAndDeferredTaxLiabilities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount recognized as of the acquisition date for the identifiable assets acquired other than intangible assets in excess of (less than) the aggregate liabilities assumed other than deferred tax liabilities.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherThanIntangibleAssetsAndDeferredTaxLiabilities</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
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<td><strong> Balance Type:</strong></td>
<td>debit</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_BusinessAcquisitionLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_BusinessAcquisitionLineItems</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 805<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=121647850&amp;loc=d3e4845-128472<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 805<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=121647850&amp;loc=d3e4845-128472<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
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<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 805<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=121647850&amp;loc=d3e4845-128472<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_BusinessAcquisitionAxis=catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_BusinessAcquisitionAxis=catb_AgreementAndPlanOfMergerQuellisBiosciencesIncMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
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<td><strong> Data Type:</strong></td>
<td>na</td>
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<td><strong> Balance Type:</strong></td>
<td></td>
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<tr>
<td><strong> Period Type:</strong></td>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319771943448">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Financial Instruments - Fair value hierarchy (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
</tr>
<tr>
<th class="th"><div>Jun. 30, 2021</div></th>
<th class="th"><div>Dec. 31, 2020</div></th>
<th class="th"><div>Jun. 30, 2020</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems', window );"><strong>Financial Instruments</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueAssetsLevel1ToLevel2TransfersAmount', window );">Fair value assets, transfers from Level 1 to Level 2</a></td>
<td class="nump">$ 0<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueAssetsLevel2ToLevel1TransfersAmount', window );">Fair value assets, transfers from Level 2 to Level 1</a></td>
<td class="nump">0<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueLiabilitiesLevel1ToLevel2TransfersAmount', window );">Fair value liabilities, transfers from Level 1 to Level 2</a></td>
<td class="nump">0<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueLiabilitiesLevel2ToLevel1TransfersAmount', window );">Fair value liabilities, transfers from Level 2 to Level 1</a></td>
<td class="nump">$ 0<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 0<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FinancialInstrumentAxis=catb_ReverseRepurchaseAgreementsMember', window );">Reverse repurchase agreements | Government Securities and Obligations | Minimum</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems', window );"><strong>Financial Instruments</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_PercentageOfInvestmentAmountToCollateralizedDepositsValue', window );">Percentage of investment amount to collateralized deposits value</a></td>
<td class="nump">102.00%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember', window );">Recurring</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetsFairValueDisclosureAbstract', window );"><strong>Assets:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetsFairValueDisclosure', window );">Total assets</a></td>
<td class="nump">$ 40,841<span></span>
</td>
<td class="nump">$ 42,999<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember', window );">Recurring | Level 1</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetsFairValueDisclosureAbstract', window );"><strong>Assets:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetsFairValueDisclosure', window );">Total assets</a></td>
<td class="nump">1,841<span></span>
</td>
<td class="nump">22,999<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember', window );">Recurring | Level 2</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetsFairValueDisclosureAbstract', window );"><strong>Assets:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetsFairValueDisclosure', window );">Total assets</a></td>
<td class="nump">39,000<span></span>
</td>
<td class="nump">20,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember', window );">Recurring | Money market fund</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetsFairValueDisclosureAbstract', window );"><strong>Assets:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashAndCashEquivalentsFairValueDisclosure', window );">Cash and cash equivalents</a></td>
<td class="nump">1,841<span></span>
</td>
<td class="nump">22,999<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember', window );">Recurring | Money market fund | Level 1</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetsFairValueDisclosureAbstract', window );"><strong>Assets:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashAndCashEquivalentsFairValueDisclosure', window );">Cash and cash equivalents</a></td>
<td class="nump">1,841<span></span>
</td>
<td class="nump">22,999<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember', window );">Recurring | Reverse repurchase agreements</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetsFairValueDisclosureAbstract', window );"><strong>Assets:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashAndCashEquivalentsFairValueDisclosure', window );">Cash and cash equivalents</a></td>
<td class="nump">39,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InvestmentsFairValueDisclosure', window );">Short-term investments</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">20,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember', window );">Recurring | Reverse repurchase agreements | Level 2</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetsFairValueDisclosureAbstract', window );"><strong>Assets:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashAndCashEquivalentsFairValueDisclosure', window );">Cash and cash equivalents</a></td>
<td class="nump">$ 39,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InvestmentsFairValueDisclosure', window );">Short-term investments</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 20,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_PercentageOfInvestmentAmountToCollateralizedDepositsValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The percentage of investment in reverse repurchase agreements which are collateralized by deposits.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_PercentageOfInvestmentAmountToCollateralizedDepositsValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AssetsFairValueDisclosure">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 820<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=117815213&amp;loc=d3e19207-110258<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AssetsFairValueDisclosure</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AssetsFairValueDisclosureAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AssetsFairValueDisclosureAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CashAndCashEquivalentsFairValueDisclosure">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CashAndCashEquivalentsFairValueDisclosure</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FairValueAssetsLevel1ToLevel2TransfersAmount">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 820<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (bb)<br> -URI http://asc.fasb.org/extlink&amp;oid=117815213&amp;loc=d3e19207-110258<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FairValueAssetsLevel1ToLevel2TransfersAmount</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FairValueAssetsLevel2ToLevel1TransfersAmount">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of transfers of assets measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 820<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (bb)<br> -URI http://asc.fasb.org/extlink&amp;oid=117815213&amp;loc=d3e19207-110258<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FairValueAssetsLevel2ToLevel1TransfersAmount</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FairValueLiabilitiesLevel1ToLevel2TransfersAmount">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of transfers of liabilities measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 820<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (bb)<br> -URI http://asc.fasb.org/extlink&amp;oid=117815213&amp;loc=d3e19207-110258<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FairValueLiabilitiesLevel1ToLevel2TransfersAmount</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FairValueLiabilitiesLevel2ToLevel1TransfersAmount">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of transfers of liabilities measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 820<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (bb)<br> -URI http://asc.fasb.org/extlink&amp;oid=117815213&amp;loc=d3e19207-110258<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FairValueLiabilitiesLevel2ToLevel1TransfersAmount</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_InvestmentsFairValueDisclosure">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 820<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=117815213&amp;loc=d3e19207-110258<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_InvestmentsFairValueDisclosure</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FinancialInstrumentAxis=catb_ReverseRepurchaseAgreementsMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FinancialInstrumentAxis=catb_ReverseRepurchaseAgreementsMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CollateralAxis=us-gaap_CollateralPledgedMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CollateralAxis=us-gaap_CollateralPledgedMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_RangeAxis=srt_MinimumMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_RangeAxis=srt_MinimumMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FinancialInstrumentAxis=us-gaap_MoneyMarketFundsMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FinancialInstrumentAxis=us-gaap_MoneyMarketFundsMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
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</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>49
<FILENAME>R39.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
							if (e.nextSibling.style.display=='none') {
							e.nextSibling.style.display='block';
							} else { e.nextSibling.style.display='none'; }
							}</script>
</head>
<body>
<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319774807656">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Financial Instruments - Warrant liability (Details)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th">
<div>Jun. 30, 2021 </div>
<div>USD ($)</div>
</th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward', window );"><strong>Derivative warrant liability was valued based on significant inputs not observable in the market, which represents a Level 3</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue', window );">Beginning balance</a></td>
<td class="nump">$ 0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues', window );">Issuance of warrants</a></td>
<td class="nump">4,332<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings', window );">(Decrease) increase in the fair value of the warrants</a></td>
<td class="num">(864)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_ReclassificationOfEquityClassifiedWarrants', window );">Reclassification of warrant liability to additional paid-in capital</a></td>
<td class="num">(3,468)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue', window );">Ending balance</a></td>
<td class="nump">$ 0<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_ReclassificationOfEquityClassifiedWarrants">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of increase (decrease) in additional paid in capital (APIC) resulting from reclassification of equity classified warrants.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_ReclassificationOfEquityClassifiedWarrants</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 820<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)<br> -URI http://asc.fasb.org/extlink&amp;oid=117815213&amp;loc=d3e19207-110258<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of issuances of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 820<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(2)<br> -URI http://asc.fasb.org/extlink&amp;oid=117815213&amp;loc=d3e19207-110258<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 820<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=117815213&amp;loc=d3e19207-110258<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>50
<FILENAME>R40.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
							if (e.nextSibling.style.display=='none') {
							e.nextSibling.style.display='block';
							} else { e.nextSibling.style.display='none'; }
							}</script>
</head>
<body>
<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319771880760">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Short-Term Investments (Details)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
</tr>
<tr><th class="th">
<div>Dec. 31, 2020 </div>
<div>USD ($) </div>
<div>instrument</div>
</th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfInvestmentsLineItems', window );"><strong>Short-Term Investments</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_ShortTermInvestmentsAtAmortizedCost', window );">Amortized Cost</a></td>
<td class="nump">$ 20,000<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShortTermInvestments', window );">Fair Value</a></td>
<td class="nump">$ 20,000<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_ShortTermSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions', window );">Number of short term investments in unrealized loss position | instrument</a></td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FinancialInstrumentAxis=catb_ReverseRepurchaseAgreementsMember', window );">Reverse repurchase agreements</a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfInvestmentsLineItems', window );"><strong>Short-Term Investments</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_ShortTermInvestmentsAtAmortizedCost', window );">Amortized Cost</a></td>
<td class="nump">$ 20,000<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShortTermInvestments', window );">Fair Value</a></td>
<td class="nump">$ 20,000<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_ShortTermInvestmentsAtAmortizedCost">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount of short-term investments at amortized cost.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_ShortTermInvestmentsAtAmortizedCost</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_ShortTermSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of Short term investment positions in a continuous unrealized loss position for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_ShortTermSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions</td>
</tr>
<tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(4))<br> -URI http://asc.fasb.org/extlink&amp;oid=120398452&amp;loc=d3e534808-122878<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(5))<br> -URI http://asc.fasb.org/extlink&amp;oid=120398452&amp;loc=d3e534808-122878<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(a)(1)(g))<br> -URI http://asc.fasb.org/extlink&amp;oid=120400017&amp;loc=d3e572229-122910<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(2))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShortTermInvestments</td>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319774850616">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Accrued Expenses (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th"><div>Jun. 30, 2021</div></th>
<th class="th"><div>Dec. 31, 2020</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccruedLiabilitiesAndOtherLiabilitiesAbstract', window );"><strong>Accrued Expenses</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EmployeeRelatedLiabilitiesCurrent', window );">Accrued compensation</a></td>
<td class="nump">$ 1,018<span></span>
</td>
<td class="nump">$ 1,719<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_AccruedContractedResearchCostsCurrent', window );">Accrued contracted research costs</a></td>
<td class="nump">790<span></span>
</td>
<td class="nump">1,726<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccruedProfessionalFeesCurrent', window );">Accrued professional fees</a></td>
<td class="nump">663<span></span>
</td>
<td class="nump">356<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherAccruedLiabilitiesCurrent', window );">Accrued other</a></td>
<td class="nump">180<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_AccruedSeveranceCurrent', window );">Accrued severance</a></td>
<td class="nump">63<span></span>
</td>
<td class="nump">396<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccruedLiabilitiesCurrent', window );">Total</a></td>
<td class="nump">$ 2,714<span></span>
</td>
<td class="nump">$ 4,197<span></span>
</td>
</tr>
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<div style="display: none;">
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Carrying value as of the balance sheet date of obligations incurred through that date for contracted research costs. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Carrying value as of the balance sheet date of obligations incurred through that date and payable for severance.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccruedLiabilitiesAndOtherLiabilitiesAbstract</td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.20)<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccruedLiabilitiesCurrent</td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccruedProfessionalFeesCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 6<br> -URI http://asc.fasb.org/extlink&amp;oid=121566466&amp;loc=d3e6911-107765<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.20)<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 8<br> -URI http://asc.fasb.org/extlink&amp;oid=121566466&amp;loc=d3e6935-107765<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccruedProfessionalFeesCurrent</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.20)<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<td><strong> Name:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.20)<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 6<br> -URI http://asc.fasb.org/extlink&amp;oid=121566466&amp;loc=d3e6911-107765<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 9<br> -URI http://asc.fasb.org/extlink&amp;oid=121566466&amp;loc=d3e7018-107765<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 8<br> -URI http://asc.fasb.org/extlink&amp;oid=121566466&amp;loc=d3e6935-107765<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319771008872">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Stockholders' Equity - Preferred Stock (Details) - $ / shares<br></strong></div></th>
<th class="th"><div>Jun. 30, 2021</div></th>
<th class="th"><div>Dec. 31, 2020</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockNumberOfSharesParValueAndOtherDisclosuresAbstract', window );"><strong>Preferred Stock</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockSharesAuthorized', window );">Preferred stock, authorized (in shares)</a></td>
<td class="nump">5,000,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockParOrStatedValuePerShare', window );">Preferred stock, par value (in dollars per share)</a></td>
<td class="nump">$ 0.001<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementClassOfStockAxis=catb_SeriesXRedeemableConvertiblePreferredStockMember', window );">Series X redeemable convertible preferred stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockNumberOfSharesParValueAndOtherDisclosuresAbstract', window );"><strong>Preferred Stock</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockSharesAuthorized', window );">Preferred stock, authorized (in shares)</a></td>
<td class="nump">37,848<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockParOrStatedValuePerShare', window );">Preferred stock, par value (in dollars per share)</a></td>
<td class="nump">$ 0.001<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockSharesOutstanding', window );">Preferred stock, outstanding (in shares)</a></td>
<td class="nump">32,545<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PreferredStockNumberOfSharesParValueAndOtherDisclosuresAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PreferredStockNumberOfSharesParValueAndOtherDisclosuresAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PreferredStockParOrStatedValuePerShare">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PreferredStockParOrStatedValuePerShare</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PreferredStockSharesAuthorized">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PreferredStockSharesAuthorized</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PreferredStockSharesOutstanding">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PreferredStockSharesOutstanding</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
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</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementClassOfStockAxis=catb_SeriesXRedeemableConvertiblePreferredStockMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementClassOfStockAxis=catb_SeriesXRedeemableConvertiblePreferredStockMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
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<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319771929384">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Stockholders' Equity - Common Stock Warrants (Details) - Warrants for the purchase of common stock<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th">
<div>Jun. 30, 2021 </div>
<div>$ / shares </div>
<div>shares</div>
</th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightLineItems', window );"><strong>Common Stock Warrants</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightOutstanding', window );">Warrants Outstanding (in shares) | shares</a></td>
<td class="nump">9,183,885<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementClassOfStockAxis=catb_CommonStockWarrantsMember', window );">Weighted Average</a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightLineItems', window );"><strong>Common Stock Warrants</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1', window );">Exercise Price (in dollars per share) | $ / shares</a></td>
<td class="nump">$ 6.99<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_WarrantsAndRightsOutstandingWeightedAverageRemainingContractualTerm', window );">Weighted average life (in years)</a></td>
<td class="text">4 years 6 months 18 days<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightAxis=catb_WarrantsIssuedIn2014Member', window );">Warrants Issued in 2014</a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightLineItems', window );"><strong>Common Stock Warrants</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightOutstanding', window );">Warrants Outstanding (in shares) | shares</a></td>
<td class="nump">1,227<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1', window );">Exercise Price (in dollars per share) | $ / shares</a></td>
<td class="nump">$ 122.12<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightAxis=catb_WarrantsIssuedIn2015Member', window );">Warrants Issued in 2015</a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightLineItems', window );"><strong>Common Stock Warrants</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightOutstanding', window );">Warrants Outstanding (in shares) | shares</a></td>
<td class="nump">1,227<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1', window );">Exercise Price (in dollars per share) | $ / shares</a></td>
<td class="nump">$ 122.12<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightAxis=catb_WarrantsIssuedIn2018Member', window );">Warrants Issued in 2018</a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightLineItems', window );"><strong>Common Stock Warrants</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightOutstanding', window );">Warrants Outstanding (in shares) | shares</a></td>
<td class="nump">4,199,995<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1', window );">Exercise Price (in dollars per share) | $ / shares</a></td>
<td class="nump">$ 12.00<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightAxis=catb_WarrantsIssuedIn2019Member', window );">Warrants Issued in 2019</a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightLineItems', window );"><strong>Common Stock Warrants</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightOutstanding', window );">Warrants Outstanding (in shares) | shares</a></td>
<td class="nump">1,991,300<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1', window );">Exercise Price (in dollars per share) | $ / shares</a></td>
<td class="nump">$ 6.25<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightAxis=catb_WarrantsIssuedIn2021Member', window );">Warrants Issued In 2021</a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightLineItems', window );"><strong>Common Stock Warrants</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightOutstanding', window );">Warrants Outstanding (in shares) | shares</a></td>
<td class="nump">2,990,136<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1', window );">Exercise Price (in dollars per share) | $ / shares</a></td>
<td class="nump">$ 0.35<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_WarrantsAndRightsOutstandingWeightedAverageRemainingContractualTerm">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Weighted average remaining contractual life of warrant, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_WarrantsAndRightsOutstandingWeightedAverageRemainingContractualTerm</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:durationItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Exercise price per share or per unit of warrants or rights outstanding.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=109259400&amp;loc=d3e21475-112644<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ClassOfWarrantOrRightLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ClassOfWarrantOrRightLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ClassOfWarrantOrRightOutstanding">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of warrants or rights outstanding.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ClassOfWarrantOrRightOutstanding</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementClassOfStockAxis=catb_CommonStockWarrantsMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementClassOfStockAxis=catb_CommonStockWarrantsMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_RangeAxis=srt_WeightedAverageMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_RangeAxis=srt_WeightedAverageMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ClassOfWarrantOrRightAxis=catb_WarrantsIssuedIn2014Member">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ClassOfWarrantOrRightAxis=catb_WarrantsIssuedIn2014Member</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ClassOfWarrantOrRightAxis=catb_WarrantsIssuedIn2015Member">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ClassOfWarrantOrRightAxis=catb_WarrantsIssuedIn2015Member</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ClassOfWarrantOrRightAxis=catb_WarrantsIssuedIn2018Member">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ClassOfWarrantOrRightAxis=catb_WarrantsIssuedIn2018Member</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ClassOfWarrantOrRightAxis=catb_WarrantsIssuedIn2019Member">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ClassOfWarrantOrRightAxis=catb_WarrantsIssuedIn2019Member</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ClassOfWarrantOrRightAxis=catb_WarrantsIssuedIn2021Member">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ClassOfWarrantOrRightAxis=catb_WarrantsIssuedIn2021Member</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>54
<FILENAME>R44.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319774543128">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Reserved for Future Issuance (Details) - shares<br></strong></div></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1">6 Months Ended</th>
<th class="th" colspan="1"></th>
</tr>
<tr>
<th class="th"><div>Jun. 02, 2021</div></th>
<th class="th"><div>Jun. 30, 2021</div></th>
<th class="th"><div>Dec. 31, 2020</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfStockLineItems', window );"><strong>Common Stock</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance', window );">Number of shares reserved for future issuance</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">18,996,948<span></span>
</td>
<td class="nump">9,646,540<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementClassOfStockAxis=catb_CommonStockWarrantsMember', window );">Warrants for the purchase of common stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfStockLineItems', window );"><strong>Common Stock</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance', window );">Number of shares reserved for future issuance</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">9,183,885<span></span>
</td>
<td class="nump">6,193,749<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementClassOfStockAxis=catb_CommonStockOptionsOutstandingMember', window );">Options outstanding to purchase Common Stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfStockLineItems', window );"><strong>Common Stock</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance', window );">Number of shares reserved for future issuance</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">7,930,334<span></span>
</td>
<td class="nump">1,367,667<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementClassOfStockAxis=catb_CommonStockOptionsReservedMember', window );">Options available for future issuance to purchase Common Stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfStockLineItems', window );"><strong>Common Stock</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance', window );">Number of shares reserved for future issuance</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1,697,308<span></span>
</td>
<td class="nump">1,936,173<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementClassOfStockAxis=catb_EmployeeStockPurchasePlan2015Member', window );">Shares reserved for the employee stock purchase plan</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfStockLineItems', window );"><strong>Common Stock</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance', window );">Number of shares reserved for future issuance</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">185,421<span></span>
</td>
<td class="nump">148,951<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementClassOfStockAxis=catb_SeriesXRedeemableConvertiblePreferredStockMember', window );">Series X redeemable convertible preferred stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfStockLineItems', window );"><strong>Common Stock</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockSharesOutstanding', window );">Preferred stock, outstanding (in shares)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">32,545<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_TemporaryEquityConversionBasis', window );">Number of shares of common stock into which each share of Series X Preferred Stock may be converted</a></td>
<td class="nump">1,000<span></span>
</td>
<td class="nump">1,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_TemporaryEquityConversionBasis">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The number of shares of common stock into which each share of Series X Preferred Stock may be converted.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_TemporaryEquityConversionBasis</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ClassOfStockLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ClassOfStockLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Aggregate number of common shares reserved for future issuance.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.29)<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommonStockCapitalSharesReservedForFutureIssuance</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PreferredStockSharesOutstanding">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PreferredStockSharesOutstanding</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementClassOfStockAxis=catb_CommonStockWarrantsMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementClassOfStockAxis=catb_CommonStockWarrantsMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementClassOfStockAxis=catb_CommonStockOptionsOutstandingMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementClassOfStockAxis=catb_CommonStockOptionsOutstandingMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
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<td><strong> Data Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementClassOfStockAxis=catb_CommonStockOptionsReservedMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementClassOfStockAxis=catb_CommonStockOptionsReservedMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
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<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementClassOfStockAxis=catb_EmployeeStockPurchasePlan2015Member">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementClassOfStockAxis=catb_EmployeeStockPurchasePlan2015Member</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementClassOfStockAxis=catb_SeriesXRedeemableConvertiblePreferredStockMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementClassOfStockAxis=catb_SeriesXRedeemableConvertiblePreferredStockMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
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<TYPE>XML
<SEQUENCE>55
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<DESCRIPTION>IDEA: XBRL DOCUMENT
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<html>
<head>
<title></title>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319773102744">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Stock Incentive Plans (Details) - Stock options - USD ($)<br></strong></div></th>
<th class="th" colspan="2">3 Months Ended</th>
<th class="th" colspan="2">6 Months Ended</th>
<th class="th" colspan="1">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Jun. 30, 2021</div></th>
<th class="th"><div>Jun. 30, 2020</div></th>
<th class="th"><div>Jun. 30, 2021</div></th>
<th class="th"><div>Jun. 30, 2020</div></th>
<th class="th"><div>Dec. 31, 2020</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward', window );"><strong>Shares</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber', window );">Outstanding, beginning of period (in shares)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1,367,667<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross', window );">Granted (in shares)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">6,447,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionGross', window );">Assumed in Quellis Acquisition (in shares)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">332,494<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod', window );">Cancelled or forfeited (in shares)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="num">(208,152)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod', window );">Expired (in shares)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="num">(8,675)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber', window );">Outstanding, end of period (in shares)</a></td>
<td class="nump">7,930,334<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">7,930,334<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1,367,667<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber', window );">Vested and exercisable (in shares)</a></td>
<td class="nump">770,141<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">770,141<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward', window );"><strong>Weighted-Average Exercise Price</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice', window );">Outstanding, beginning of period (in dollars per share)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 11.38<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice', window );">Granted (in dollars per share)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">2.74<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionWeightedAverageExercisePrice', window );">Assumed in Quellis Acquisition (in dollars per share)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">0.29<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice', window );">Cancelled or forfeited (in dollars per share)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">8.71<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice', window );">Expired (in dollars per share)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">16.70<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice', window );">Outstanding at end of year (in dollars per share)</a></td>
<td class="nump">$ 3.96<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">3.96<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 11.38<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice', window );">Vested and Exercisable (in dollars per share)</a></td>
<td class="nump">$ 14.07<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 14.07<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTermAbstract', window );"><strong>Weighted Average Remaining Contractual Term (years)</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2', window );">Outstanding</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">9 years 5 months 8 days<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">8 years 1 month 17 days<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1', window );">Vested and Exercisable</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">7 years 3 months 21 days<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAggregateIntrinsicValueAbstract', window );"><strong>Aggregate Intrinsic Value</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue', window );">Outstanding</a></td>
<td class="nump">$ 662,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 662,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue', window );">Vested and Exercisable</a></td>
<td class="nump">$ 207,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 207,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract', window );"><strong>Stock Incentive Plans</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised', window );">Exercised (in shares)</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">0<span></span>
</td>
<td class="nump">0<span></span>
</td>
<td class="nump">0<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1', window );">Aggregate fair value of options vested</a></td>
<td class="nump">$ 400,000<span></span>
</td>
<td class="nump">$ 0.3<span></span>
</td>
<td class="nump">$ 1,000,000.0<span></span>
</td>
<td class="nump">$ 800,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue', window );">Weighted average grant date fair value of options granted (in dollars per share)</a></td>
<td class="nump">$ 1.73<span></span>
</td>
<td class="nump">$ 4.00<span></span>
</td>
<td class="nump">$ 1.73<span></span>
</td>
<td class="nump">$ 3.64<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions', window );">Unrecognized compensation expense related to unvested stock option awards</a></td>
<td class="nump">$ 12,700,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 12,700,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1', window );">Weighted-average amortization period over which cost is expected to be recognized</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">3 years 3 months 18 days<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionGross">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Gross number of share options (or share units) assumed in acquisition during the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionGross</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionWeightedAverageExercisePrice">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Weighted average exercise per share of share options assumed in acquisition during the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionWeightedAverageExercisePrice</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAggregateIntrinsicValueAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>n/a</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAggregateIntrinsicValueAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTermAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>n/a</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">catb_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTermAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>catb_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (i)<br> -URI http://asc.fasb.org/extlink&amp;oid=120381028&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:durationItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of cost to be recognized for option under share-based payment arrangement.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (i)<br> -URI http://asc.fasb.org/extlink&amp;oid=120381028&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)(iv)(4)<br> -URI http://asc.fasb.org/extlink&amp;oid=120381028&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)(iv)(3)<br> -URI http://asc.fasb.org/extlink&amp;oid=120381028&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Gross number of share options (or share units) granted during the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (d)(1)<br> -URI http://asc.fasb.org/extlink&amp;oid=120381028&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=120381028&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of options outstanding, including both vested and non-vested options.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=120381028&amp;loc=d3e5070-113901<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)(i)-(ii)<br> -URI http://asc.fasb.org/extlink&amp;oid=120381028&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)(i)<br> -URI http://asc.fasb.org/extlink&amp;oid=120381028&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest exercisable or convertible options. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (e)(2)<br> -URI http://asc.fasb.org/extlink&amp;oid=120381028&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of fully vested and expected to vest exercisable options that may be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (e)(2)<br> -URI http://asc.fasb.org/extlink&amp;oid=120381028&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Weighted-average exercise price, at which grantee can acquire shares reserved for issuance, for fully vested and expected to vest exercisable or convertible options. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (e)(2)<br> -URI http://asc.fasb.org/extlink&amp;oid=120381028&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (e)(1)<br> -URI http://asc.fasb.org/extlink&amp;oid=120381028&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:durationItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Weighted average remaining contractual term for fully vested and expected to vest exercisable or convertible options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (e)(2)<br> -URI http://asc.fasb.org/extlink&amp;oid=120381028&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=120381028&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Balance Type:</strong></td>
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of share options (or share units) exercised during the current period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)(iv)(2)<br> -URI http://asc.fasb.org/extlink&amp;oid=120381028&amp;loc=d3e5070-113901<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI http://asc.fasb.org/extlink&amp;oid=120397183&amp;loc=d3e187085-122770<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=109259400&amp;loc=d3e21463-112644<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised</td>
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<td>us-gaap_</td>
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<td>xbrli:sharesItemType</td>
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AwardTypeAxis=us-gaap_EmployeeStockOptionMember</td>
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<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm140319769898184">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Subsequent Events (Details)<br></strong></div></th>
<th class="th"><div>Aug. 04, 2021</div></th>
</tr>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_catb_CommonStockReverseStockSplitRatio', window );">Reverse stock split ratio</a></td>
<td class="nump">0.167<span></span>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Represents the reverse stock split ratio. Also provide the retroactive effect given by the reverse split that occurs after the balance sheet date but before the release of financial statements.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
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<tr>
<td><strong> Name:</strong></td>
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end
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
