<SEC-DOCUMENT>0001213900-20-005790.txt : 20200309
<SEC-HEADER>0001213900-20-005790.hdr.sgml : 20200309
<ACCEPTANCE-DATETIME>20200309171756
ACCESSION NUMBER:		0001213900-20-005790
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20200309
DATE AS OF CHANGE:		20200309

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Protalix BioTherapeutics, Inc.
		CENTRAL INDEX KEY:			0001006281
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		IRS NUMBER:				650643773
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-50118
		FILM NUMBER:		20698879

	BUSINESS ADDRESS:	
		STREET 1:		2 SNUNIT ST
		STREET 2:		SCIENCE PARK, POB 455
		CITY:			CARMIEL
		STATE:			L3
		ZIP:			2161401
		BUSINESS PHONE:		972-4-988-9488

	MAIL ADDRESS:	
		STREET 1:		2 SNUNIT ST
		STREET 2:		SCIENCE PARK, POB 455
		CITY:			CARMIEL
		STATE:			L3
		ZIP:			2161401

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ORTHODONTIX INC
		DATE OF NAME CHANGE:	19980422

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	EMBASSY ACQUISITION CORP
		DATE OF NAME CHANGE:	19960124

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			UBS OCONNOR LLC
		CENTRAL INDEX KEY:			0001132716
		IRS NUMBER:				061569842
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		ONE NORTH WACKER DRIVE 31ST FLOOR
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
		BUSINESS PHONE:		3125256000

	MAIL ADDRESS:	
		STREET 1:		ONE NORTH WACKER DRIVE 31ST FLOOR
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>ea119458-13ga4ubs_protalix.htm
<DESCRIPTION>AMENDED SCHEDULE 13G
<TEXT>
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<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0; margin-bottom: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0; margin-bottom: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>UNITED
STATES<BR>
SECURITIES AND EXCHANGE COMMISSION<BR>
Washington, D.C. 20549</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0; margin-bottom: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>SCHEDULE
13G</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>Under
the Securities Exchange Act of 1934 </B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>(Amendment
No. 4)*</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&#9;Protalix
Biotherapeutics, Inc.</FONT></P>

<!-- Field: Rule-Page --><DIV STYLE="margin-top: 0; margin-bottom: 0; width: 100%"><DIV STYLE="font-size: 1pt; border-top: Black 1.5pt solid">&nbsp;</DIV></DIV><!-- Field: /Rule-Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center"><FONT STYLE="font: 10pt Times New Roman, Times, Serif"></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(Name
of Issuer)</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&#9;Common
Stock, $0.001 par value per share</FONT></P>

<!-- Field: Rule-Page --><DIV STYLE="margin-top: 0; margin-bottom: 0; width: 100%"><DIV STYLE="font-size: 1pt; border-top: Black 1.5pt solid">&nbsp;</DIV></DIV><!-- Field: /Rule-Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center"><FONT STYLE="font: 10pt Times New Roman, Times, Serif"></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(Title
of Class of Securities)</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">74365A309</FONT></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(CUSIP
Number)</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&#9;December
31, 2019&#9;</FONT></P>

<!-- Field: Rule-Page --><DIV STYLE="margin-top: 0; margin-bottom: 0; width: 100%"><DIV STYLE="font-size: 1pt; border-top: Black 1.5pt solid">&nbsp;</DIV></DIV><!-- Field: /Rule-Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(Date
of Event Which Requires Filing of this Statement)</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Check
the appropriate box to designate the rule pursuant to which this Schedule is filed:</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">a.
&nbsp;&nbsp;&nbsp;&nbsp;&#9746;&nbsp;Rule 13d-1(b)</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">b.
&nbsp;&nbsp;&nbsp;&nbsp;&#9744;&nbsp;Rule 13d-1(c)</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">c.
&nbsp;&nbsp;&nbsp;&nbsp;&#9744;&nbsp;Rule 13d-1(d)</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">*The
remainder of this cover page shall be filled out for a reporting person&rsquo;s initial filing on this form with respect to the
subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided
in a prior cover page.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">The
information required in the remainder of this cover page shall not be deemed to be &ldquo;filed&rdquo; for the purpose of Section
18 of the Securities Exchange Act of 1934 (&ldquo;Act&rdquo;) 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).</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>




<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">CUSIP
No. <FONT STYLE="text-underline-style: dotted"><U>&#9;74365A309&#9;</U></FONT></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="text-underline-style: dotted">&nbsp;</FONT></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
<TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
    <TD STYLE="border-top: black 2.25pt double; border-bottom: black 1pt solid; border-left: black 2.25pt double; font: 10pt Times New Roman, Times, Serif; padding: 0; text-align: center; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">1.</FONT></TD>
    <TD COLSPAN="3" STYLE="border-top: black 2.25pt double; border-right: black 2.25pt double; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding: 0 0 0 5pt; text-indent: 0"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Names
                                         of Reporting Persons.</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">UBS
        O&rsquo;Connor LLC</FONT></P></TD></TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; border-left: black 2.25pt double; font: 10pt Times New Roman, Times, Serif; padding: 0; text-align: center; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">2.</FONT></TD>
    <TD COLSPAN="2" STYLE="border-bottom: black 1pt solid; border-left: black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding: 0 0 0 5pt; text-indent: 0"><P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: left; margin-top: 0pt; margin-bottom: 0pt"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Check
                                         the Appropriate Box if a Member of a Group (See Instructions)</FONT></P>


</TD>
    <TD STYLE="border-right: black 2.25pt double; border-bottom: black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding: 0 0 0 5pt; text-indent: 0"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; text-align: center; margin-bottom: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(a)&nbsp;&#9744;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; text-align: center; margin-bottom: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(b)&nbsp;&#9744;</FONT></P></TD></TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; border-left: black 2.25pt double; font: 10pt Times New Roman, Times, Serif; padding: 0; text-align: center; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">3.</FONT></TD>
    <TD COLSPAN="3" STYLE="border-right: black 2.25pt double; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding: 0 0 0 5pt; text-indent: 0"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">SEC
                                         Use Only</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P></TD></TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; border-left: black 2.25pt double; font: 10pt Times New Roman, Times, Serif; padding: 0; text-align: center; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">4.</FONT></TD>
    <TD COLSPAN="3" STYLE="border-right: black 2.25pt double; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding: 0 0 0 5pt; text-indent: 0"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Citizenship
                                         or Place of Organization</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Delaware</FONT></P></TD></TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
    <TD ROWSPAN="4" STYLE="border-bottom: black 1pt solid; border-left: black 2.25pt double; font: 10pt Times New Roman, Times, Serif; padding: 0; text-align: center; text-indent: 0; vertical-align: middle"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Number
                                         of<BR>
                                         Shares<BR>
                                         Beneficially<BR>
                                         Owned by <BR>
                                         Each<BR>
                                         Reporting<BR>
                                         Person With:</FONT></P>


</TD>
    <TD STYLE="border-bottom: black 1pt solid; border-left: black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding: 0 0 0 5pt; text-align: center; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">5.</FONT></TD>
    <TD COLSPAN="2" STYLE="border-right: black 2.25pt double; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding: 0 0 0 5pt; text-indent: 0"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Sole
                                         Voting Power</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">941,176</FONT></P></TD></TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; border-left: black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding: 0 0 0 5pt; text-align: center; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">6.</FONT></TD>
    <TD COLSPAN="2" STYLE="border-right: black 2.25pt double; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding: 0 0 0 5pt; text-indent: 0"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Shared&nbsp;Voting
                                         Power</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">0</FONT></P></TD></TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; border-left: black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding: 0 0 0 5pt; text-align: center; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">7.</FONT></TD>
    <TD COLSPAN="2" STYLE="border-right: black 2.25pt double; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding: 0 0 0 5pt; text-indent: 0"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Sole
                                         Dispositive Power</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">941,176</FONT></P></TD></TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; border-left: black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding: 0 0 0 5pt; text-align: center; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">8.</FONT></TD>
    <TD COLSPAN="2" STYLE="border-right: black 2.25pt double; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding: 0 0 0 5pt; text-indent: 0"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Shared&nbsp;Dispositive
                                         Power</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">0</FONT></P></TD></TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; border-left: black 2.25pt double; font: 10pt Times New Roman, Times, Serif; padding: 0; text-align: center; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">9.</FONT></TD>
    <TD COLSPAN="3" STYLE="border-right: black 2.25pt double; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding: 0 0 0 5pt; text-indent: 0"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Aggregate
                                         Amount Beneficially Owned by Each Reporting Person</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">941,176
        (see Item 4)</FONT></P></TD></TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; border-left: black 2.25pt double; font: 10pt Times New Roman, Times, Serif; padding: 0; text-align: center; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">10.</FONT></TD>
    <TD COLSPAN="2" STYLE="border-bottom: black 1pt solid; border-left: black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding: 0 0 0 5pt; text-indent: 0"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Check
                                         if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P></TD>
    <TD STYLE="border-right: black 2.25pt double; border-bottom: black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding: 0 0 0 5pt; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&#9744;</FONT></TD></TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; border-left: black 2.25pt double; font: 10pt Times New Roman, Times, Serif; padding: 0; text-align: center; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">11.</FONT></TD>
    <TD COLSPAN="3" STYLE="border-right: black 2.25pt double; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding: 0 0 0 5pt; text-indent: 0"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Percent
of Class Represented by Amount in Row (9)</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">6.0%
        (see Item 4)</FONT></P></TD></TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
    <TD STYLE="border-bottom: black 2.25pt double; border-left: black 2.25pt double; font: 10pt Times New Roman, Times, Serif; padding: 0; text-align: center; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">12.</FONT></TD>
    <TD COLSPAN="3" STYLE="border-right: black 2.25pt double; border-bottom: black 2.25pt double; border-left: black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding: 0 0 0 5pt; text-indent: 0"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Type
of Reporting Person (See Instructions)</FONT></P>



<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">OO;
        IA&#9;</FONT></P></TD></TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding: 0; text-indent: 0; width: 13%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding: 0 0 0 5pt; text-indent: 0; width: 9%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding: 0 0 0 5pt; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding: 0 0 0 5pt; text-indent: 0; width: 5%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><BR></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 6.5in"></P>




<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">This
Amendment No.&nbsp;4 is being filed jointly by the Reporting Person and amends the Schedule&nbsp;13G initially filed with the
Securities and Exchange Commission (the &ldquo;<B>SEC</B>&rdquo;) on February 14, 2017, as amended by Amendment No. 1 thereto
filed with the SEC on February 13, 2018, as amended by Amendment No. 2 thereto filed with the SEC on February 12, 2019, and as
amended by Amendment No. 3 thereto filed with the SEC on February 13, 2020 (the &ldquo;<B>Schedule&nbsp;13G</B>&rdquo;). This
Amendment No. 4 is being filed solely to correct a typographical error in the number of shares of Common Stock previously reported
as being beneficially owned by the Reporting Person.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Except
as set forth below, all Items of the Schedule&nbsp;13G remain unchanged. All capitalized terms not otherwise defined herein shall
have the meanings ascribed to such terms in the Schedule 13G.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>&nbsp;</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"> <FONT STYLE="font: 10pt Times New Roman, Times, Serif"><B>Item 4.</B></FONT> <FONT STYLE="font: 10pt Times New Roman, Times, Serif"><B>Ownership. </B></FONT></P>



<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="text-indent: 0; font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(a)
and (b):</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 0.5in; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">As
of the close of business on December 31, 2019, the Reporting Person may have been deemed to have beneficial ownership of 941,176
shares of Common Stock issuable upon conversion of the GLEA Note, and all such shares of Common Stock represented beneficial ownership
of approximately 6.0% of the Common Stock, based on (1) 14,838,229 shares of Common Stock outstanding as of November 1, 2019 as
reported by the Issuer (as adjusted for the 1 for 10 reverse stock split effected by the Issuer on December 19, 2019), plus (2)
941,176 shares of Common Stock issuable upon conversion of the GLEA Note.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font: 10pt Times New Roman, Times, Serif"></FONT>(c)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Number
of shares as to which each Reporting Person has:</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 0.75in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(1)
Sole power to vote or to direct the vote: <U>&#9;941,176 </U>.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 0.75in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(2)
Shared power to vote or to direct the vote: <U>&#9; 0 </U>.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 0.75in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(3)
Sole power to dispose or to direct the disposition of <U>&#9; 941,176 </U>.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 0.75in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(4)
Shared power to dispose or to direct the disposition of <U>&#9; 0 </U> .</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>Item
10. Certification </B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">By
signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held
in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or
influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant
in any transaction having that purpose or effect, other than activities solely in connection with a nomination under &sect; 240.14a-11.<BR STYLE="clear: both"></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>SIGNATURE</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">After
reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true,
complete and correct.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 0.5in; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Date:
March 9, 2020</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD>
    <TD COLSPAN="2" STYLE="font: 10pt Times New Roman, Times, Serif; padding: 0; text-indent: 0"><FONT STYLE="font: 10pt Times New Roman, Times, Serif">UBS O&rsquo;Connor LLC</FONT></TD></TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding: 0; text-indent: 0; width: 60%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding: 0; text-indent: 0; width: 4%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding: 0; text-indent: 0; width: 36%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding: 0 0 1.5pt; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="padding: 0 0 1.5pt; font: 10pt Times New Roman, Times, Serif; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">By:</FONT></TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; font: 10pt Times New Roman, Times, Serif; padding-top: 0; padding-right: 0; padding-left: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/
    Michael Esposito</FONT></TD></TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Name:
    Michael Esposito</FONT></TD></TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Title:
    Deputy Chief Compliance Officer</FONT></TD></TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding: 0 0 1.5pt; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="padding: 0 0 1.5pt; font: 10pt Times New Roman, Times, Serif; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">By:</FONT></TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; font: 10pt Times New Roman, Times, Serif; padding-top: 0; padding-right: 0; padding-left: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/
    Christopher Smock</FONT></TD></TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Name:
    Christopher Smock</FONT></TD></TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Title:
    Senior Compliance Officer</FONT></TD></TR>
</TABLE>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Page 4 of 4<FONT STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</FONT></P>

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