<SEC-DOCUMENT>0001072613-18-000184.txt : 20180305
<SEC-HEADER>0001072613-18-000184.hdr.sgml : 20180305
<ACCEPTANCE-DATETIME>20180305152230
ACCESSION NUMBER:		0001072613-18-000184
CONFORMED SUBMISSION TYPE:	SC 13D/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20180305
DATE AS OF CHANGE:		20180305
GROUP MEMBERS:		ANTHONY A. FLORENCE, JR.
GROUP MEMBERS:		DAVID M. MOTT
GROUP MEMBERS:		FOREST BASKETT
GROUP MEMBERS:		HARRY R. WELLER
GROUP MEMBERS:		JON M. SAKODA
GROUP MEMBERS:		JOSHUA MAKOWER
GROUP MEMBERS:		KRISHNA S. KOLLURI
GROUP MEMBERS:		NEA 15 GP, LLC
GROUP MEMBERS:		NEA PARTNERS 15, L.P.
GROUP MEMBERS:		NEW ENTERPRISE ASSOCIATES 15, L.P.
GROUP MEMBERS:		PETER J. BARRIS
GROUP MEMBERS:		PETER W. SONSINI
GROUP MEMBERS:		RAVI VISWANATHAN
GROUP MEMBERS:		SCOTT D. SANDELL

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ARCA biopharma, Inc.
		CENTRAL INDEX KEY:			0000907654
		STANDARD INDUSTRIAL CLASSIFICATION:	IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES [2835]
		IRS NUMBER:				363855489
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-51477
		FILM NUMBER:		18665763

	BUSINESS ADDRESS:	
		STREET 1:		11080 CIRCLEPOINT ROAD
		STREET 2:		SUITE 140
		CITY:			WESTMINSTER
		STATE:			CO
		ZIP:			80020
		BUSINESS PHONE:		720-940-2200

	MAIL ADDRESS:	
		STREET 1:		11080 CIRCLEPOINT ROAD
		STREET 2:		SUITE 140
		CITY:			WESTMINSTER
		STATE:			CO
		ZIP:			80020

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NUVELO INC
		DATE OF NAME CHANGE:	20030203

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	HYSEQ INC
		DATE OF NAME CHANGE:	19970610

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Growth Equity Opportunities IV, LLC
		CENTRAL INDEX KEY:			0001644965
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D/A

	BUSINESS ADDRESS:	
		STREET 1:		1954 GREENSPRING DRIVE
		STREET 2:		SUITE 600
		CITY:			TIMONIUM
		STATE:			MD
		ZIP:			21093
		BUSINESS PHONE:		410-842-4000

	MAIL ADDRESS:	
		STREET 1:		1954 GREENSPRING DRIVE
		STREET 2:		SUITE 600
		CITY:			TIMONIUM
		STATE:			MD
		ZIP:			21093
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D/A
<SEQUENCE>1
<FILENAME>arca-sch13da1_18178.htm
<DESCRIPTION>GROWTH EQUITY OPPORTUNITIES FUND IV, LLC --- ARCA BIOPHARMA, INC. - SCHEDULE 13DA - AMEND. NO. 1
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<div style="FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman; FONT-WEIGHT: bold; TEXT-ALIGN: center; DISPLAY: block">Washington, D.C.&#160;&#160;20549</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; FONT-WEIGHT: bold; TEXT-ALIGN: center; DISPLAY: block">Under the Securities Exchange Act of 1934</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; FONT-WEIGHT: bold; TEXT-ALIGN: center; DISPLAY: block">(Amendment No. 1)*</div>

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<div style="FONT-SIZE: 20pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: center">ARCA biopharma, Inc.</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">Louis S. Citron, Esq.</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">1954 Greenspring Drive, Suite 600, Timonium, MD&#160; 21093</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-VARIANT: normal; FONT-WEIGHT: bold; FONT-STYLE: normal; TEXT-ALIGN: center">February 26, 2018</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify">*The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify">The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section&#160;18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).</div>
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<div style="TEXT-ALIGN: left">Item 1.</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif"><u>Security and Issuer</u></font>.</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">This Amendment No. 1 ("Amendment No. 1") to Schedule 13D amends and restates the statement on Schedule 13D originally filed on June 29, 2015, relating&#160; to the common stock, $.001 par value (the "Common Stock") of ARCA biopharma, Inc. (the "Issuer") having its principal executive office at 11080 Circle Point Road, Suite 140, Westminster, CO 80020.</div>

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<div style="TEXT-ALIGN: left"><font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">Item </font><font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">2.</font></div>
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<div style="TEXT-ALIGN: left"><font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><u>Identity </u></font><font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif"><font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif"><u>and Background</u></font>.</font></div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; MARGIN-LEFT: 36pt">This statement is being filed by:</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">(a) Growth Equity Opportunities Fund IV, LLC ("GEO");</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">(b) New Enterprise Associates 15, L.P.&#160; ("NEA 15"), which is the sole member of GEO, NEA Partners 15, L.P. ("NEA Partners 15"), which is the sole general partner of NEA 15; and NEA 15 GP, LLC ("NEA 15 LLC" and, together with NEA Partners 15, the "Control Entities"), which is the sole general partner of NEA Partners 15; and</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">(c) Peter&#160;J. Barris ("Barris"), Forest Baskett ("Baskett"), Anthony A Florence, Jr. ("Florence"), Joshua Makower ("Makower"), David M. Mott ("Mott"), Jon M. Sakoda ("Sakoda"), Scott D. Sandell ("Sandell"), Peter W. Sonsini ("Sonsini") and Ravi Viswanathan ("Viswanathan") (together, the "Managers"), Krishna S. Kolluri ("Kolluri") and Harry R. Weller ("Weller").&#160; The Managers are the managers of NEA 15 LLC.</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">The persons named in this Item 2 are referred to individually herein as a "Reporting Person" and collectively as the "Reporting Persons."</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">The address of the principal business office of GEO, NEA 15 and each Control Entity is New Enterprise Associates, 1954 Greenspring Drive, Suite 600, Timonium, MD 21093.&#160; The address of the principal business office of each of Barris and Mott is New Enterprise Associates, 5425 Wisconsin Avenue, Suite 800, Chevy Chase, MD 20815.&#160; The address of the principal business office of Baskett, Makower, Sakoda, Sandell, Sonsini and Viswanathan is New Enterprise Associates, 2855 Sand Hill Road, Menlo Park, California 94025. The address of the principal business office of Florence is New Enterprise Associates, 104 Fifth Avenue, 19th Floor, New York, NY 10011.</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">The principal business of GEO and NEA 15 is to invest in and assist growth-oriented businesses located principally in the United States.&#160; The principal business of NEA Partners 15 is to act as the sole general partner of NEA 15.&#160; The principal business of NEA 15 LLC is to act as the sole general partner of NEA Partners 15.&#160; The principal business of each of the Managers is to manage the Control Entities, GEO and a number of affiliated partnerships with similar businesses.</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">During the five years prior to the date hereof, none of the Reporting Persons has been convicted in a criminal proceeding or has been a party to a civil proceeding ending in a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">GEO and NEA 15 LLC are limited liability companies organized under the laws of the State of Delaware.&#160; NEA 15 and NEA Partners 15 are limited partnerships organized under the laws of the State of Delaware. Each of the Managers is a United States citizen.</div>
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<td style="FONT-SIZE: 10pt; BORDER-TOP: black 2px solid; FONT-FAMILY: times new roman; WIDTH: 33%; BORDER-BOTTOM: black 2px solid; BORDER-LEFT: black 2px solid">CUSIP No.&#160;&#160; <font style="FONT-SIZE: 10pt; FONT-FAMILY: times new roman; DISPLAY: inline">00211Y100</font></td>
<td style="FONT-SIZE: 10pt; BORDER-TOP: black 2px solid; FONT-FAMILY: times new roman; BORDER-RIGHT: black 2px solid; WIDTH: 33%; BORDER-BOTTOM: black 2px solid; TEXT-ALIGN: center; BORDER-LEFT: black 2px solid">13D</td>
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<div style="TEXT-ALIGN: left">Item 4.</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif"><u>Purpose of Transaction</u></font>.</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">Not applicable.</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">Item 5.</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif"><font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif"><u>Interest in Securities of the Issuer</u></font>.</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-LEFT: 36pt">Each of the Reporting Persons have ceased to own beneficially five percent or more of the Issuer's Common Stock.</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">Item 6.</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif"><font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif"><u>Contracts, Arrangements, Undertakings or Relationships with Respect to Securities of the Issuer</u></font>.</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-LEFT: 36pt">Not applicable.</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif"><u>Material to be Filed as Exhibits</u></font>.</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-LEFT: 36pt">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-LEFT: 36pt; TEXT-INDENT: -36pt">Exhibit 1 &#8211; Agreement regarding filing of joint Schedule 13D.</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">Exhibit 2 &#8211; Power of Attorney regarding filings under the Securities Exchange Act of 1934, as amended.</div>

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<td style="FONT-SIZE: 10pt; BORDER-TOP: black 2px solid; FONT-FAMILY: times new roman; BORDER-RIGHT: black 2px solid; WIDTH: 33%; BORDER-BOTTOM: black 2px solid; TEXT-ALIGN: center; BORDER-LEFT: black 2px solid">13D</td>
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<div style="FONT-SIZE: 10pt; TEXT-DECORATION: underline; FONT-FAMILY: Times New Roman; FONT-WEIGHT: bold; TEXT-ALIGN: center">SIGNATURE</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 36pt">After reasonable inquiry and to the best of its knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct.</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 36pt">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">EXECUTED this&#160;5<sup style="vertical-align: text-top; line-height: 1; font-size: smaller">th</sup> day of March, 2018.</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">GROWTH EQUITY OPPORTUNITIES FUND IV, LLC</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">NEW ENTERPRISE ASSOCIATES 15, L.P.</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left">By: NEA PARTNERS 15, L.P.</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left">&#160;&#160;&#160;&#160;&#160;&#160; General Partner</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left">NEA 15 GP, LLC</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left">General Partner</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; MARGIN-LEFT: 108pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">By:&#160; <font style="TEXT-DECORATION: underline; DISPLAY: inline">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;*&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</font>&#160;&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-LEFT: 36pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-LEFT: 90pt">Louis S. Citron</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-LEFT: 90pt">Chief Legal Officer</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">NEW ENTERPRISE ASSOCIATES 15, L.P.</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left">NEA PARTNERS 15, L.P.</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left">General Partner</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">NEA 15 GP, LLC</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left">General Partner</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; DISPLAY: block">By:&#160; <font style="TEXT-DECORATION: underline; DISPLAY: inline">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;*&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</font>&#160;&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; MARGIN-LEFT: 18pt; DISPLAY: block">Louis S. Citron</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; MARGIN-LEFT: 18pt; DISPLAY: block">Chief Legal Officer</div>

<br>
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<div style="DISPLAY: block; TEXT-INDENT: 0pt"><br>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">NEA PARTNERS 15, L.P.</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">NEA 15 GP, LLC</div>
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<table id="z552dd910bd8549ce8135a8d2e1e7e581" style="FONT-SIZE: 10pt; FONT-FAMILY: times new roman; WIDTH: 100%" cellspacing="0" cellpadding="0" align="center" border="0">
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left">General Partner</div>
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<div style="DISPLAY: block; TEXT-INDENT: 0pt"><br>
By:&#160; <font style="TEXT-DECORATION: underline; DISPLAY: inline">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;*&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</font>&#160;&#160;</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; MARGIN-LEFT: 9pt; DISPLAY: block">&#160;&#160;&#160;&#160;&#160;&#160;&#160; Louis S. Citron</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; MARGIN-LEFT: 18pt; DISPLAY: block">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-LEFT: 9pt">Chief Legal Officer</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">NEA 15 GP, LLC</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; DISPLAY: block">Louis S. Citron</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">Peter W. Sonsini</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">Ravi Viswanathan</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">This Amendment No.1 to Schedule&#160;13D was executed by Sasha O. Keough on behalf of the individuals listed above pursuant to a Power of Attorney a copy of which is attached as Exhibit&#160;2.</div>

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<div style="FONT-SIZE: 10pt; TEXT-DECORATION: underline; FONT-FAMILY: Times New Roman; FONT-WEIGHT: bold; TEXT-ALIGN: right">EXHIBIT 1</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: center; MARGIN-LEFT: 0pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">AGREEMENT</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 36pt">Pursuant to Rule&#160;13d-1(k)(1) under the Securities Exchange Act of 1934, the undersigned hereby agree that only one statement containing the information required by Schedule&#160;13D need be filed with respect to the ownership by each of the undersigned of shares of stock of ARCA biopharma, Inc.</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">EXECUTED this&#160;5<sup style="vertical-align: text-top; line-height: 1; font-size: smaller">th</sup> day of March, 2018.</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">GROWTH EQUITY OPPORTUNITIES FUND IV, LLC</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">NEW ENTERPRISE ASSOCIATES 15, L.P.</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left">By: NEA PARTNERS 15, L.P.</div>
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</td>
</tr>
</table>
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<td style="WIDTH: 72pt">
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<td style="WIDTH: 36pt">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">By:</div>
</td>
<td>
<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left">NEA 15 GP, LLC</div>
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</tr>
</table>
</div>

<div>
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<td style="WIDTH: 108pt">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; DISPLAY: inline"></div>
</td>
<td>
<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left">General Partner</div>
</td>
</tr>
</table>
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<div style="DISPLAY: block; TEXT-INDENT: 0pt"><br>
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<div style="DISPLAY: block; TEXT-INDENT: 0pt"><br>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-LEFT: 36pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-LEFT: 90pt">Louis S. Citron</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-LEFT: 90pt">Chief Legal Officer</div>

<br>
</div>

<div style="DISPLAY: block; TEXT-INDENT: 0pt"><br>
</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">NEW ENTERPRISE ASSOCIATES 15, L.P.</div>

<div style="DISPLAY: block; TEXT-INDENT: 0pt"><br>
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<div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left">NEA PARTNERS 15, L.P.</div>
</td>
</tr>
</table>
</div>

<div>
<table id="z2a34216611a94901a5906a1222ad4f3e" style="FONT-SIZE: 10pt; FONT-FAMILY: times new roman; WIDTH: 100%" cellspacing="0" cellpadding="0" align="center" border="0">
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<div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">NEA 15 GP, LLC</div>
</td>
</tr>
</table>
</div>

<div>
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<tr valign="top">
<td style="WIDTH: 72pt">
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<td>
<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left">General Partner</div>
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</table>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; MARGIN-LEFT: 72pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; MARGIN-LEFT: 18pt; DISPLAY: block">Louis S. Citron</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; MARGIN-LEFT: 18pt; DISPLAY: block">Chief Legal Officer</div>

<br>
</div>

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</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">NEA PARTNERS 15, L.P.</div>

<div style="DISPLAY: block; TEXT-INDENT: 0pt"><br>
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<div>
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</td>
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<div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">&#160;Chief Legal Officer</div>

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</div>
</div>

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</div>

<div>
<div style="TEXT-ALIGN: center">
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<tr>
<td style="FONT-SIZE: 10pt; BORDER-TOP: black 2px solid; FONT-FAMILY: times new roman; WIDTH: 33%; BORDER-BOTTOM: black 2px solid; BORDER-LEFT: black 2px solid">CUSIP No.&#160;&#160; <font style="FONT-SIZE: 10pt; FONT-FAMILY: times new roman; DISPLAY: inline">00211Y100</font></td>
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</tr>
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</div>

<div>&#160;</div>
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</div>

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</div>
</div>

<div style="DISPLAY: block; TEXT-INDENT: 0pt">
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">NEA 15 GP, LLC</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; MARGIN-LEFT: 18pt; DISPLAY: block">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; DISPLAY: block">Louis S. Citron</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; DISPLAY: block">Chief Legal Officer</div>

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</table>
</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">Peter J. Barris</div>

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<div>
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<td style="WIDTH: 252pt">
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">Forest Baskett</div>

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<td style="WIDTH: 252pt">
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">Anthony A. Florence, Jr.</div>

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<td style="WIDTH: 252pt">
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">Joshua Makower</div>

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<td style="WIDTH: 252pt">
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">David M. Mott</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">Jon M. Sakoda</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">Scott D. Sandell</div>

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<table id="z9533abbba398489780ccbea28da9f254" style="FONT-SIZE: 10pt; FONT-FAMILY: times new roman; WIDTH: 100%" cellspacing="0" cellpadding="0" align="center" border="0">
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">Peter W. Sonsini</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">Ravi Viswanathan</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 252pt">Sasha O. Keough</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 252pt">As attorney-in-fact</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">This Agreement relating to Schedule&#160;13D was executed by Sasha O. Keough on behalf of the individuals listed above pursuant to a Power of Attorney a copy of which is attached hereto as Exhibit&#160;2.</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: center; MARGIN-LEFT: 0pt; DISPLAY: block; MARGIN-RIGHT: 0pt; TEXT-INDENT: 0pt">POWER OF ATTORNEY</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 36pt">KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby constitutes and appoints Louis S. Citron, Timothy Schaller, Sasha Keough and Stephanie Brecher, and each of them, with full power to act without the others, his or her true and lawful attorney-in-fact, with full power of substitution, to sign any and all instruments, certificates and documents that may be necessary, desirable or appropriate to be executed on behalf of himself as an individual or in his or her capacity as a direct or indirect general partner, director, officer or manager of any partnership, corporation or limited liability company, pursuant to section&#160;13 or 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and any and all regulations promulgated thereunder, and to file the same, with all exhibits thereto, and any other documents in connection therewith, with the Securities and Exchange Commission, and with any other entity when and if such is mandated by the Exchange Act or by the Financial Industry Regulatory Authority, granting unto said attorney-in-fact full power and authority to do and perform each and every act and thing necessary, desirable or appropriate, fully to all intents and purposes as he or she might or could do in person, thereby ratifying and confirming all that said attorney-in-fact, or his or her substitutes, may lawfully do or cause to be done by virtue hereof.</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">IN WITNESS WHEREOF, this Power of Attorney has been signed as of the 13th day of March, 2017.</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><u>/s/ M. James Barrett&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </u></div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">M. James Barrett</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><u>/s/ Peter J. Barris&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </u></div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><u>/s/ Forest Baskett&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </u></div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><u>/s/ Ali Behbahani&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </u></div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><u>/s/ Colin Bryant&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </u></div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><u>/s/ Carmen Chang&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </u></div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><u>/s/ Anthony A. Florence, Jr.&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </u></div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">Anthony A. Florence, Jr.</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><u>/s/ Carol G. Gallagher&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </u></div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><u>/s/ Dayna Grayson&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </u></div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">Dayna Grayson</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><u>/s/ Patrick J. Kerins&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </u></div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">Patrick J. Kerins</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><u>/s/ P. Justin Klein&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </u></div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">P. Justin Klein</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><u>/s/ Joshua Makower&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</u></div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">Joshua Makower</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><u>/s/ Mohamad H. Makhzoumi&#160;&#160;&#160;&#160;&#160;&#160;&#160; </u></div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><u>/s/ Edward T. Mathers&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </u></div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><u>/s/ David M. Mott&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </u></div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><u>/s/ Gregory Papadopoulos&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </u></div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><u>/s/ Chetan Puttagunta&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </u></div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><u>/s/ Jon Sakoda&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </u></div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><u>/s/ Scott D. Sandell&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </u></div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">Scott D. Sandell</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><u>/s/ A. Brooke Seawell&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </u></div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">A. Brooke Seawell</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><u>/s/ Peter W. Sonsini&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </u></div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">Peter W. Sonsini</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><u>/s/ Melissa Taunton&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</u></div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><u>/s/ Frank M. Torti&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </u></div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><u>/s/ Ravi Viswanathan&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </u></div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">Ravi Viswanathan </div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><u>/s/ Paul E. Walker&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </u></div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">Paul E. Walker</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left"><u>/s/ Rick Yang&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </u></div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">Rick Yang</div>

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