<SEC-DOCUMENT>0001019056-19-000571.txt : 20191028
<SEC-HEADER>0001019056-19-000571.hdr.sgml : 20191028
<ACCEPTANCE-DATETIME>20191028163046
ACCESSION NUMBER:		0001019056-19-000571
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20191028
DATE AS OF CHANGE:		20191028
GROUP MEMBERS:		ARDSLEY ADVISORY PARTNERS GP LLC
GROUP MEMBERS:		ARDSLEY ADVISORY PARTNERS LP
GROUP MEMBERS:		ARDSLEY DUCKDIVE FUND, L.P.
GROUP MEMBERS:		ARDSLEY HEALTHCARE FUND, L.P.
GROUP MEMBERS:		ARDSLEY PARTNERS I GP LLC
GROUP MEMBERS:		ARDSLEY PARTNERS RENEWABLE ENERGY FUND, L.P.
GROUP MEMBERS:		ARDSLEY RIDGECREST PARTNERS FUND, L.P.
GROUP MEMBERS:		PHILIP J. HEMPLEMAN

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SunOpta Inc.
		CENTRAL INDEX KEY:			0000351834
		STANDARD INDUSTRIAL CLASSIFICATION:	WHOLESALE-FARM PRODUCT RAW MATERIALS [5150]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			Z4
		FISCAL YEAR END:			0101

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-59617
		FILM NUMBER:		191173334

	BUSINESS ADDRESS:	
		STREET 1:		2233 ARGENTIA ROAD
		STREET 2:		SUITE 401
		CITY:			MISSISSAUGA
		STATE:			A6
		ZIP:			L5N 2X7
		BUSINESS PHONE:		(905) 455-1990

	MAIL ADDRESS:	
		STREET 1:		2233 ARGENTIA ROAD
		STREET 2:		SUITE 401
		CITY:			MISSISSAUGA
		STATE:			A6
		ZIP:			L5N 2X7

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SUNOPTA INC
		DATE OF NAME CHANGE:	20031107

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	STAKE TECHNOLOGY LTD
		DATE OF NAME CHANGE:	19940901

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ARDSLEY ADVISORY PARTNERS LP
		CENTRAL INDEX KEY:			0000900529
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		262 HARBOR DRIVE, 4TH FLOOR
		CITY:			STAMFORD
		STATE:			CT
		ZIP:			06902
		BUSINESS PHONE:		203-564-4230

	MAIL ADDRESS:	
		STREET 1:		262 HARBOR DRIVE, 4TH FLOOR
		CITY:			STAMFORD
		STATE:			CT
		ZIP:			06902

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ARDSLEY ADVISORY PARTNERS
		DATE OF NAME CHANGE:	19940208
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>sunopta_13ga1.htm
<DESCRIPTION>SC 13G/A
<TEXT>
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<!-- Field: Rule-Page --><DIV ALIGN="LEFT" STYLE="margin-top: 12pt; margin-bottom: 3pt"><DIV STYLE="font-size: 1pt; border-top: Black 4pt solid; border-bottom: Black 1pt solid; width: 100%">&nbsp;</DIV></DIV><!-- Field: /Rule-Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-size: 14pt; font-weight: normal">UNITED
STATES</FONT><BR>
<FONT STYLE="font-size: 14pt; font-weight: normal">SECURITIES AND EXCHANGE COMMISSION</FONT><BR>
<FONT STYLE="font-size: 12pt; font-weight: normal">Washington, D.C. 20549</FONT></P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-size: 18pt">SCHEDULE
13G/A</FONT></P>


<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">(Amendment No. 1)</P>

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

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-size: 24pt"><B>SunOpta Inc.</B></FONT></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-size: 24pt"><B> </B></FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 47.95pt"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></P>

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

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


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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center; text-indent: 47.95pt"><FONT STYLE="font-size: 10pt"><B>&nbsp;</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-size: 10pt; background-color: white"><B>8676EP108</B></FONT></P>

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<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-size: 10pt">(CUSIP Number)</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 47.95pt"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-size: 10pt">October
21, 2019</FONT></P>

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<P STYLE="font: bold 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-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-indent: 47.95pt"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></P>

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

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="width: 5%; padding-right: 0; padding-left: 0; font: small-caps bold 10pt Times New Roman, Times, Serif"><FONT STYLE="font: normal 10pt Wingdings">x</FONT></td>
    <TD STYLE="width: 95%; padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">Rule
    13d-1(b)</FONT></td></tr>
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="padding-right: 0; padding-left: 0; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font: 10pt Wingdings">x</FONT></td>
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">Rule
    13d-1(c)</FONT></td></tr>
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="padding-right: 0; padding-left: 0; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font: 10pt Wingdings">o</FONT></td>
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">Rule
    13d-1(d)</FONT></td></tr>
</table>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></P>

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

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

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

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0 0 0pt; text-align: justify"><FONT STYLE="font-size: 10pt">Persons
who are to respond to the collection of information contained in this form are not required to respond unless the form displays
a currently valid OMB control number.</FONT></P>

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    <TD STYLE="width: 32%; border: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-top: 12pt; padding-bottom: 12pt; padding-left: 5.4pt"><FONT STYLE="font-size: 10pt">CUSIP No. 8676EP108</FONT></td>
    <TD STYLE="width: 35%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: bold 10pt Times New Roman, Times, Serif; padding: 12pt 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt">13G/A</FONT></td>
    <TD STYLE="width: 33%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-top: 12pt; padding-bottom: 12pt; text-align: center"><FONT STYLE="font-size: 10pt">Page
    2 of 14 Pages</FONT></td></tr>
</table>
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<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 6%; text-indent: 0; padding: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 9%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 5%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 41%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 16%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 10%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 13%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; border-top: black 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">1.</TD>
    <TD COLSPAN="6" STYLE="border-top: black 1pt solid; border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">names of reporting
        persons</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-variant: small-caps">i.r.s. identification no.
        of above persons (entities only)</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-variant: small-caps">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-variant: small-caps"><B>Ardsley Advisory
Partners LP</B></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-left: black 1pt solid; border-bottom: black 1pt solid; border-right: black 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">2.</TD>
    <TD COLSPAN="5" STYLE="border-bottom: Black 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps">check the appropriate box if a group*</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-variant: small-caps">(</FONT>a)
        <FONT STYLE="font-family: Wingdings"><FONT STYLE="font-family: Wingdings">x</FONT></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-variant: small-caps">(</FONT>b)
        <FONT STYLE="font-family: Wingdings">o</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">3.</TD>
    <TD COLSPAN="6" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">sec use only</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0">&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">4.</TD>
    <TD COLSPAN="6" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">citizenship or place
        of organization</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps"><B>Delaware,
United States of America</B></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0">&nbsp;</P></TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">number of<BR> shares</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; font-weight: bold; padding-left: 5.4pt">5.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-left: 5.4pt; font-variant: small-caps">sole voting power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right; padding-right: 5.4pt">0</TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">beneficially<BR> owned by</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; font-weight: bold; padding-left: 5.4pt">6.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-left: 5.4pt; font-variant: small-caps">shared voting power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right; padding-right: 5.4pt">11,957,855</TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">each<BR> reporting</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; font-weight: bold; padding-left: 5.4pt">7.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; padding: 6pt 5.4pt; border-right: windowtext 1pt solid; font-variant: small-caps">sole dispositive power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right; padding-right: 5.4pt">0</TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="vertical-align: top; border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">person with:</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">8.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">shared dispositive power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right">11,957,855</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">9.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">aggregate amount beneficially owned by each reporting person</TD>
    <TD COLSPAN="2" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-bottom: 6pt; font-variant: small-caps; font-weight: bold; text-align: right">11,957,855</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">10.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: Black 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps"><FONT STYLE="font-variant: small-caps">check
box if the aggregate amount in row (9) excludes certain shares (See Instructions)</FONT></TD>
    <TD COLSPAN="2" STYLE="text-align: center; border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; padding-left: 1.25in; vertical-align: middle"><FONT STYLE="font-family: Wingdings"><FONT STYLE="font-family: Wingdings">o</FONT></FONT>&nbsp;</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">11.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">percent of class represented by amount in row (9)</TD>
    <TD COLSPAN="2" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-bottom: 6pt; font-variant: small-caps; font-weight: bold; text-align: right">13.60%</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">12.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">type of reporting person (See Instructions)</TD>
    <TD COLSPAN="2" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 1.25in; font-variant: small-caps; font-weight: bold">PN, IA</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-size: 10pt"></FONT></P>


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    <DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">&nbsp;</TD></TR></TABLE></DIV>
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<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="width: 32%; border: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-top: 12pt; padding-bottom: 12pt; padding-left: 5.4pt"><FONT STYLE="font-size: 10pt">CUSIP No. 8676EP108</FONT></td>
    <TD STYLE="width: 35%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: bold 10pt Times New Roman, Times, Serif; padding: 12pt 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt">13G/A</FONT></td>
    <TD STYLE="width: 33%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-top: 12pt; padding-bottom: 12pt; text-align: center"><FONT STYLE="font-size: 10pt">Page
    3 of 14 Pages</FONT></td></tr>
</table>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-size: 10pt"></FONT></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 6%; text-indent: 0; padding: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 9%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 5%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 41%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 16%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 10%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 13%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; border-top: black 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">13.</TD>
    <TD COLSPAN="6" STYLE="border-top: black 1pt solid; border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">names of reporting
        persons</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-variant: small-caps">i.r.s. identification no.
        of above persons (entities only)</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-variant: small-caps">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-variant: small-caps"><B>Ardsley Advisory
Partners GP LLC</B></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-left: black 1pt solid; border-bottom: black 1pt solid; border-right: black 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">14.</TD>
    <TD COLSPAN="5" STYLE="border-bottom: Black 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps">check the appropriate box if a group*</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-variant: small-caps">(</FONT>a)
        <FONT STYLE="font-family: Wingdings"><FONT STYLE="font-family: Wingdings">x</FONT></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-variant: small-caps">(</FONT>b)
        <FONT STYLE="font-family: Wingdings">o</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">15.</TD>
    <TD COLSPAN="6" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">sec use only</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0">&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">16.</TD>
    <TD COLSPAN="6" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">citizenship or place
        of organization</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps"><B>Delaware,
United States of America</B></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0">&nbsp;</P></TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">number of<BR> shares</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; font-weight: bold; padding-left: 5.4pt">17.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-left: 5.4pt; font-variant: small-caps">sole voting power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right; padding-right: 5.4pt">0</TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">beneficially<BR> owned by</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; font-weight: bold; padding-left: 5.4pt">18.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-left: 5.4pt; font-variant: small-caps">shared voting power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right; padding-right: 5.4pt">11,957,855</TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">each<BR> reporting</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; font-weight: bold; padding-left: 5.4pt">19.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; padding: 6pt 5.4pt; border-right: windowtext 1pt solid; font-variant: small-caps">sole dispositive power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right; padding-right: 5.4pt">0</TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="vertical-align: top; border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">person with:</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">20.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">shared dispositive power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right">11,957,855</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">21.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">aggregate amount beneficially owned by each reporting person</TD>
    <TD COLSPAN="2" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-bottom: 6pt; font-variant: small-caps; font-weight: bold; text-align: right">11,957,855</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">22.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: Black 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps"><FONT STYLE="font-variant: small-caps">check
box if the aggregate amount in row (9) excludes certain shares (See Instructions)</FONT></TD>
    <TD COLSPAN="2" STYLE="text-align: center; border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; padding-left: 1.25in; vertical-align: middle"><FONT STYLE="font-family: Wingdings"><FONT STYLE="font-family: Wingdings">o</FONT></FONT>&nbsp;</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">23.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">percent of class represented by amount in row (9)</TD>
    <TD COLSPAN="2" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-bottom: 6pt; font-variant: small-caps; font-weight: bold; text-align: right">13.60%</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">24.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">type of reporting person (See Instructions)</TD>
    <TD COLSPAN="2" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 1.25in; font-variant: small-caps; font-weight: bold">PN</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-size: 10pt"></FONT></P>


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    <DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">&nbsp;</TD></TR></TABLE></DIV>
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<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="width: 32%; border: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-top: 12pt; padding-bottom: 12pt; padding-left: 5.4pt"><FONT STYLE="font-size: 10pt">CUSIP No. 8676EP108</FONT></td>
    <TD STYLE="width: 35%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: bold 10pt Times New Roman, Times, Serif; padding: 12pt 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt">13G/A</FONT></td>
    <TD STYLE="width: 33%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-top: 12pt; padding-bottom: 12pt; text-align: center"><FONT STYLE="font-size: 10pt">Page
    4 of 14 Pages</FONT></td></tr>
</table>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 6%; text-indent: 0; padding: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 9%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 5%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 41%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 16%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 10%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 13%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; border-top: black 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">1.</TD>
    <TD COLSPAN="6" STYLE="border-top: black 1pt solid; border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">names of reporting
        persons</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-variant: small-caps">i.r.s. identification no.
        of above persons (entities only)</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-variant: small-caps">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-variant: small-caps"><B>Philip J. Hempleman</B></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-left: black 1pt solid; border-bottom: black 1pt solid; border-right: black 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">2.</TD>
    <TD COLSPAN="5" STYLE="border-bottom: Black 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps">check the appropriate box if a group*</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-variant: small-caps">(</FONT>a)
        <FONT STYLE="font-family: Wingdings"><FONT STYLE="font-family: Wingdings">x</FONT></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-variant: small-caps">(</FONT>b)
        <FONT STYLE="font-family: Wingdings">o</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">3.</TD>
    <TD COLSPAN="6" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">sec use only</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0">&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">4.</TD>
    <TD COLSPAN="6" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">citizenship or place
        of organization</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps"><B>United
States of America</B></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0">&nbsp;</P></TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">number of<BR> shares</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; font-weight: bold; padding-left: 5.4pt">5.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-left: 5.4pt; font-variant: small-caps">sole voting power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right; padding-right: 5.4pt">0</TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">beneficially<BR> owned by</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; font-weight: bold; padding-left: 5.4pt">6.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-left: 5.4pt; font-variant: small-caps">shared voting power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right; padding-right: 5.4pt">11,957,855</TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">each<BR> reporting</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; font-weight: bold; padding-left: 5.4pt">7.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; padding: 6pt 5.4pt; border-right: windowtext 1pt solid; font-variant: small-caps">sole dispositive power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right; padding-right: 5.4pt">0</TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="vertical-align: top; border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">person with:</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">8.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">shared dispositive power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right">11,957,855</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">9.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">aggregate amount beneficially owned by each reporting person</TD>
    <TD COLSPAN="2" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-bottom: 6pt; font-variant: small-caps; font-weight: bold; text-align: right">11,957,855</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">10.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: Black 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps"><FONT STYLE="font-variant: small-caps">check
box if the aggregate amount in row (9) excludes certain shares (See Instructions)</FONT></TD>
    <TD COLSPAN="2" STYLE="text-align: center; border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; padding-left: 1.25in; vertical-align: middle"><FONT STYLE="font-family: Wingdings"><FONT STYLE="font-family: Wingdings">o</FONT></FONT>&nbsp;</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">11.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">percent of class represented by amount in row (9)</TD>
    <TD COLSPAN="2" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-bottom: 6pt; font-variant: small-caps; font-weight: bold; text-align: right">13.60%</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">12.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">type of reporting person (See Instructions)</TD>
    <TD COLSPAN="2" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 1.25in; font-variant: small-caps; font-weight: bold">IN</TD></TR>
</TABLE>
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    CUSIP No. 8676EP108</FONT></td>
    <TD STYLE="width: 35%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: bold 10pt Times New Roman, Times, Serif; padding: 12pt 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt">13G/A</FONT></td>
    <TD STYLE="width: 33%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-top: 12pt; padding-bottom: 12pt; text-align: center"><FONT STYLE="font-size: 10pt">Page
    5 of 14 Pages</FONT></td></tr>
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<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 6%; text-indent: 0; padding: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 9%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 5%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 41%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 16%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 10%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 13%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; border-top: black 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">1.</TD>
    <TD COLSPAN="6" STYLE="border-top: black 1pt solid; border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">names of reporting
        persons</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-variant: small-caps">i.r.s. identification no.
        of above persons (entities only)</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-variant: small-caps">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-variant: small-caps"><B>Ardsley Partners
I GP LLC</B></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-left: black 1pt solid; border-bottom: black 1pt solid; border-right: black 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">2.</TD>
    <TD COLSPAN="5" STYLE="border-bottom: Black 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps">check the appropriate box if a group*</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-variant: small-caps">(</FONT>a)
        <FONT STYLE="font-family: Wingdings"><FONT STYLE="font-family: Wingdings">x</FONT></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-variant: small-caps">(</FONT>b)
        <FONT STYLE="font-family: Wingdings">o</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">3.</TD>
    <TD COLSPAN="6" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">sec use only</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0">&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">4.</TD>
    <TD COLSPAN="6" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">citizenship or place
        of organization</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps"><B>Delaware,
United States of America</B></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0">&nbsp;</P></TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">number of<BR> shares</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; font-weight: bold; padding-left: 5.4pt">5.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-left: 5.4pt; font-variant: small-caps">sole voting power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right; padding-right: 5.4pt">0</TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">beneficially<BR> owned by</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; font-weight: bold; padding-left: 5.4pt">6.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-left: 5.4pt; font-variant: small-caps">shared voting power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right; padding-right: 5.4pt">11,957,855</TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">each<BR> reporting</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; font-weight: bold; padding-left: 5.4pt">7.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; padding: 6pt 5.4pt; border-right: windowtext 1pt solid; font-variant: small-caps">sole dispositive power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right; padding-right: 5.4pt">0</TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="vertical-align: top; border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">person with:</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">8.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">shared dispositive power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right">11,957,855</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">9.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">aggregate amount beneficially owned by each reporting person</TD>
    <TD COLSPAN="2" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-bottom: 6pt; font-variant: small-caps; font-weight: bold; text-align: right">11,957,855</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">10.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: Black 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps"><FONT STYLE="font-variant: small-caps">check
box if the aggregate amount in row (9) excludes certain shares (See Instructions)</FONT></TD>
    <TD COLSPAN="2" STYLE="text-align: center; border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; padding-left: 1.25in; vertical-align: middle"><FONT STYLE="font-family: Wingdings"><FONT STYLE="font-family: Wingdings">o</FONT></FONT>&nbsp;</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">11.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">percent of class represented by amount in row (9)</TD>
    <TD COLSPAN="2" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-bottom: 6pt; font-variant: small-caps; font-weight: bold; text-align: right">13.60%</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">12.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">type of reporting person (See Instructions)</TD>
    <TD COLSPAN="2" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 1.25in; font-variant: small-caps; font-weight: bold">PN</TD></TR>
</TABLE>
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    <TD STYLE="width: 32%; border: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-top: 12pt; padding-bottom: 12pt; padding-left: 5.4pt"><FONT STYLE="font-size: 10pt">CUSIP
    No. 8676EP108</FONT></td>
    <TD STYLE="width: 35%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: bold 10pt Times New Roman, Times, Serif; padding: 12pt 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt">13G/A</FONT></td>
    <TD STYLE="width: 33%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-top: 12pt; padding-bottom: 12pt; text-align: center"><FONT STYLE="font-size: 10pt">Page
    6 of 14 Pages</FONT></td></tr>
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<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 6%; text-indent: 0; padding: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 9%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 5%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 41%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 16%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 10%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 13%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; border-top: black 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">1.</TD>
    <TD COLSPAN="6" STYLE="border-top: black 1pt solid; border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">names of reporting
        persons</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-variant: small-caps">i.r.s. identification no.
        of above persons (entities only)</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-variant: small-caps">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-variant: small-caps"><B>Ardsley Healthcare
Fund, L.P.</B></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-left: black 1pt solid; border-bottom: black 1pt solid; border-right: black 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">2.</TD>
    <TD COLSPAN="5" STYLE="border-bottom: Black 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps">check the appropriate box if a group*</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-variant: small-caps">(</FONT>a)
        <FONT STYLE="font-family: Wingdings"><FONT STYLE="font-family: Wingdings">x</FONT></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-variant: small-caps">(</FONT>b)
        <FONT STYLE="font-family: Wingdings">o</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">3.</TD>
    <TD COLSPAN="6" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">sec use only</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0">&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">4.</TD>
    <TD COLSPAN="6" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">citizenship or place
        of organization</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps"><B>Delaware,
United States of America</B></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0">&nbsp;</P></TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">number of<BR> shares</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; font-weight: bold; padding-left: 5.4pt">5.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-left: 5.4pt; font-variant: small-caps">sole voting power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right; padding-right: 5.4pt">0</TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">beneficially<BR> owned by</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; font-weight: bold; padding-left: 5.4pt">6.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-left: 5.4pt; font-variant: small-caps">shared voting power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right; padding-right: 5.4pt">100,000</TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">each<BR> reporting</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; font-weight: bold; padding-left: 5.4pt">7.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; padding: 6pt 5.4pt; border-right: windowtext 1pt solid; font-variant: small-caps">sole dispositive power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right; padding-right: 5.4pt">0</TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="vertical-align: top; border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">person with:</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">8.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">shared dispositive power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right">100,000</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">9.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">aggregate amount beneficially owned by each reporting person</TD>
    <TD COLSPAN="2" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-bottom: 6pt; font-variant: small-caps; font-weight: bold; text-align: right"><B>100,000</B></TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">10.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: Black 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps"><FONT STYLE="font-variant: small-caps">check
box if the aggregate amount in row (9) excludes certain shares (See Instructions)</FONT></TD>
    <TD COLSPAN="2" STYLE="text-align: center; border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; padding-left: 1.25in; vertical-align: middle"><FONT STYLE="font-family: Wingdings"><FONT STYLE="font-family: Wingdings">o</FONT></FONT>&nbsp;</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">11.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">percent of class represented by amount in row (9)</TD>
    <TD COLSPAN="2" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-bottom: 6pt; font-variant: small-caps; font-weight: bold; text-align: right">0.11%</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">12.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">type of reporting person (See Instructions)</TD>
    <TD COLSPAN="2" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 1.25in; font-variant: small-caps; font-weight: bold">PN</TD></TR>
</TABLE>


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    <TD STYLE="width: 32%; border: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-top: 12pt; padding-bottom: 12pt; padding-left: 5.4pt"><FONT STYLE="font-size: 10pt">


    CUSIP No. 8676EP108</FONT></td>
    <TD STYLE="width: 35%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: bold 10pt Times New Roman, Times, Serif; padding: 12pt 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt">13G/A</FONT></td>
    <TD STYLE="width: 33%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-top: 12pt; padding-bottom: 12pt; text-align: center"><FONT STYLE="font-size: 10pt">Page
    7 of 14 Pages</FONT></td></tr>
</table>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-size: 10pt"></FONT></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 6%; text-indent: 0; padding: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 9%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 5%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 41%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 16%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 10%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 13%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; border-top: black 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">1.</TD>
    <TD COLSPAN="6" STYLE="border-top: black 1pt solid; border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">names of reporting
        persons</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-variant: small-caps">i.r.s. identification no.
        of above persons (entities only)</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-variant: small-caps">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-variant: small-caps"><B>Ardsley Partners
Renewable Energy Fund, L.P.</B></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-left: black 1pt solid; border-bottom: black 1pt solid; border-right: black 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">2.</TD>
    <TD COLSPAN="5" STYLE="border-bottom: Black 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps">check the appropriate box if a group*</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-variant: small-caps">(</FONT>a)
        <FONT STYLE="font-family: Wingdings"><FONT STYLE="font-family: Wingdings">x</FONT></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-variant: small-caps">(</FONT>b)
        <FONT STYLE="font-family: Wingdings">o</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">3.</TD>
    <TD COLSPAN="6" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">sec use only</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0">&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">4.</TD>
    <TD COLSPAN="6" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">citizenship or place
        of organization</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps"><B>Delaware,
United States of America</B></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0">&nbsp;</P></TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">number of<BR> shares</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; font-weight: bold; padding-left: 5.4pt">5.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-left: 5.4pt; font-variant: small-caps">sole voting power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right; padding-right: 5.4pt">0</TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">beneficially<BR> owned by</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; font-weight: bold; padding-left: 5.4pt">6.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-left: 5.4pt; font-variant: small-caps">shared voting power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right; padding-right: 5.4pt">9,500,155</TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">each<BR> reporting</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; font-weight: bold; padding-left: 5.4pt">7.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; padding: 6pt 5.4pt; border-right: windowtext 1pt solid; font-variant: small-caps">sole dispositive power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right; padding-right: 5.4pt">0</TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="vertical-align: top; border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">person with:</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">8.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">shared dispositive power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right">9,500,155</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">9.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">aggregate amount beneficially owned by each reporting person</TD>
    <TD COLSPAN="2" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-bottom: 6pt; font-variant: small-caps; font-weight: bold; text-align: right">9,500,155</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">10.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: Black 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps"><FONT STYLE="font-variant: small-caps">check
box if the aggregate amount in row (9) excludes certain shares (See Instructions)</FONT></TD>
    <TD COLSPAN="2" STYLE="text-align: center; border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; padding-left: 1.25in; vertical-align: middle"><FONT STYLE="font-family: Wingdings"><FONT STYLE="font-family: Wingdings">o</FONT></FONT>&nbsp;</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">11.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">percent of class represented by amount in row (9)</TD>
    <TD COLSPAN="2" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-bottom: 6pt; font-variant: small-caps; font-weight: bold; text-align: right">10.80%</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">12.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">type of reporting person (See Instructions)</TD>
    <TD COLSPAN="2" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 1.25in; font-variant: small-caps; font-weight: bold">PN</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-size: 10pt"></FONT></P>

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


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<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="width: 32%; border: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-top: 12pt; padding-bottom: 12pt; padding-left: 5.4pt"><FONT STYLE="font-size: 10pt">


    CUSIP No. 8676EP108</FONT></td>
    <TD STYLE="width: 35%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: bold 10pt Times New Roman, Times, Serif; padding: 12pt 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt">13G/A</FONT></td>
    <TD STYLE="width: 33%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-top: 12pt; padding-bottom: 12pt; text-align: center"><FONT STYLE="font-size: 10pt">Page
    8 of 14 Pages</FONT></td></tr>
</table>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-size: 10pt"></FONT></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 6%; text-indent: 0; padding: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 9%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 5%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 41%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 16%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 10%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 13%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; border-top: black 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">1.</TD>
    <TD COLSPAN="6" STYLE="border-top: black 1pt solid; border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">names of reporting
        persons</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-variant: small-caps">i.r.s. identification no.
        of above persons (entities only)</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-variant: small-caps">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-variant: small-caps"><B>Ardsley Duckdive
Fund, L.P.</B></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-left: black 1pt solid; border-bottom: black 1pt solid; border-right: black 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">2.</TD>
    <TD COLSPAN="5" STYLE="border-bottom: Black 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps">check the appropriate box if a group*</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-variant: small-caps">(</FONT>a)
        <FONT STYLE="font-family: Wingdings"><FONT STYLE="font-family: Wingdings">x</FONT></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-variant: small-caps">(</FONT>b)
        <FONT STYLE="font-family: Wingdings">o</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">3.</TD>
    <TD COLSPAN="6" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">sec use only</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0">&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">4.</TD>
    <TD COLSPAN="6" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">citizenship or place
        of organization</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps"><B>Delaware,
United States of America</B></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0">&nbsp;</P></TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">number of<BR> shares</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; font-weight: bold; padding-left: 5.4pt">5.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-left: 5.4pt; font-variant: small-caps">sole voting power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right; padding-right: 5.4pt">0</TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">beneficially<BR> owned by</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; font-weight: bold; padding-left: 5.4pt">6.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-left: 5.4pt; font-variant: small-caps">shared voting power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right; padding-right: 5.4pt">2,347,700</TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">each<BR> reporting</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; font-weight: bold; padding-left: 5.4pt">7.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; padding: 6pt 5.4pt; border-right: windowtext 1pt solid; font-variant: small-caps">sole dispositive power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right; padding-right: 5.4pt">0</TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="vertical-align: top; border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">person with:</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">8.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">shared dispositive power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right">2,347,700</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">9.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">aggregate amount beneficially owned by each reporting person</TD>
    <TD COLSPAN="2" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-bottom: 6pt; font-variant: small-caps; font-weight: bold; text-align: right">2,347,700</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">10.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: Black 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps"><FONT STYLE="font-variant: small-caps">check
box if the aggregate amount in row (9) excludes certain shares (See Instructions)</FONT></TD>
    <TD COLSPAN="2" STYLE="text-align: center; border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; padding-left: 1.25in; vertical-align: middle"><FONT STYLE="font-family: Wingdings"><FONT STYLE="font-family: Wingdings">o</FONT></FONT>&nbsp;</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">11.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">percent of class represented by amount in row (9)</TD>
    <TD COLSPAN="2" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-bottom: 6pt; font-variant: small-caps; font-weight: bold; text-align: right">2.67%</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">12.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">type of reporting person (See Instructions)</TD>
    <TD COLSPAN="2" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 1.25in; font-variant: small-caps; font-weight: bold">PN</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-size: 10pt"></FONT></P>


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    CUSIP No. 8676EP108</FONT></td>
    <TD STYLE="width: 35%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: bold 10pt Times New Roman, Times, Serif; padding: 12pt 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt">13G/A</FONT></td>
    <TD STYLE="width: 33%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-top: 12pt; padding-bottom: 12pt; text-align: center"><FONT STYLE="font-size: 10pt">Page
    9 of 14 Pages</FONT></td></tr>
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<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 6%; text-indent: 0; padding: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 9%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 5%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 41%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 16%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 10%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 13%; padding: 0; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; border-top: black 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">13.</TD>
    <TD COLSPAN="6" STYLE="border-top: black 1pt solid; border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">names of reporting
        persons</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-variant: small-caps">i.r.s. identification no.
        of above persons (entities only)</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-variant: small-caps">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-variant: small-caps"><B>Ardsley Ridgecrest
Partners Fund, L.P.</B></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-left: black 1pt solid; border-bottom: black 1pt solid; border-right: black 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">14.</TD>
    <TD COLSPAN="5" STYLE="border-bottom: Black 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps">check the appropriate box if a group*</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-variant: small-caps">(</FONT>a)
        <FONT STYLE="font-family: Wingdings"><FONT STYLE="font-family: Wingdings">x</FONT></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-variant: small-caps">(</FONT>b)
        <FONT STYLE="font-family: Wingdings">o</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">15.</TD>
    <TD COLSPAN="6" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">sec use only</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0">&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold">16.</TD>
    <TD COLSPAN="6" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps">citizenship or place
        of organization</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0"><FONT STYLE="font-variant: small-caps"><B>Delaware,
United States of America</B></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0">&nbsp;</P></TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">number of<BR> shares</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; font-weight: bold; padding-left: 5.4pt">17.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-left: 5.4pt; font-variant: small-caps">sole voting power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right; padding-right: 5.4pt">0</TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">beneficially<BR> owned by</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; font-weight: bold; padding-left: 5.4pt">18.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-left: 5.4pt; font-variant: small-caps">shared voting power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right; padding-right: 5.4pt">10,000</TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">each<BR> reporting</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; font-weight: bold; padding-left: 5.4pt">19.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; padding: 6pt 5.4pt; border-right: windowtext 1pt solid; font-variant: small-caps">sole dispositive power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right; padding-right: 5.4pt">0</TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="vertical-align: top; border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font-variant: small-caps; font-weight: bold; text-align: center">person with:</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">20.</TD>
    <TD STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">shared dispositive power</TD>
    <TD COLSPAN="3" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-variant: small-caps; font-weight: bold; text-align: right">10,000</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">21.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">aggregate amount beneficially owned by each reporting person</TD>
    <TD COLSPAN="2" STYLE="border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-bottom: 6pt; font-variant: small-caps; font-weight: bold; text-align: right">10,000</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">22.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: Black 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps"><FONT STYLE="font-variant: small-caps">check
box if the aggregate amount in row (9) excludes certain shares (See Instructions)</FONT></TD>
    <TD COLSPAN="2" STYLE="text-align: center; border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; padding-left: 1.25in; vertical-align: middle"><FONT STYLE="font-family: Wingdings"><FONT STYLE="font-family: Wingdings">o</FONT></FONT>&nbsp;</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">23.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">percent of class represented by amount in row (9)</TD>
    <TD COLSPAN="2" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-right: 5.4pt; padding-bottom: 6pt; font-variant: small-caps; font-weight: bold; text-align: right">0.01%</TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-top: 6pt; padding-left: 5.4pt; font-weight: bold; padding-bottom: 6pt">24.</TD>
    <TD COLSPAN="4" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 5.4pt; font-variant: small-caps">type of reporting person (See Instructions)</TD>
    <TD COLSPAN="2" STYLE="vertical-align: top; border-bottom: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 6pt; padding-bottom: 6pt; padding-left: 1.25in; font-variant: small-caps; font-weight: bold">PN</TD></TR>
</TABLE>
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<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="width: 32%; border: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-top: 12pt; padding-bottom: 12pt; padding-left: 5.4pt"><FONT STYLE="font-size: 10pt">


    CUSIP No. 8676EP108</FONT></td>
    <TD STYLE="width: 35%; border-top: Black 1pt solid; border-bottom: Black 1pt solid; font: bold 10pt Times New Roman, Times, Serif; padding: 12pt 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt">13G/A</FONT></td>
    <TD STYLE="width: 33%; border: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-top: 12pt; padding-bottom: 12pt; text-align: center"><FONT STYLE="font-size: 10pt">Page
    10 of 14 Pages</FONT></td></tr>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD COLSPAN="6" STYLE="padding-right: 0; padding-left: 0; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">
    <B>Item 1.</B></FONT></td></tr>
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></td>
    <TD STYLE="padding-right: 0; padding-left: 0; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">(a)&nbsp;&nbsp;Name
    of Issuer:</FONT></td>
    <TD COLSPAN="4" STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt"><B>SunOpta
Inc. </B></FONT></td></tr>
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></td>
    <TD COLSPAN="3" STYLE="padding-right: 0; padding-left: 0; font: 10pt Times New Roman, Times, Serif; text-align: justify"><FONT STYLE="font-size: 10pt">(b)&nbsp;&nbsp;Address
    of Issuer&rsquo;s Principal Executive Offices:</FONT></td>
    <TD COLSPAN="2" STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-size: 10pt"><B>2233
Argentia Road </B></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0in"><FONT STYLE="font-size: 10pt"><B>Mississauga,
Ontario L5N 2X7, Canada</B></FONT></P></td></tr>
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD COLSPAN="6" STYLE="padding-right: 0; padding-left: 0; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></td></tr>
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD COLSPAN="6" STYLE="padding-right: 0; padding-left: 0; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt"><B>Item
    2.</B></FONT></td></tr>
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></td>
    <TD COLSPAN="2" STYLE="padding-right: 0; padding-left: 0; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">(a)&nbsp;&nbsp;Name
    of Person Filing:</FONT></td>
    <TD COLSPAN="3" STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt"><B>This
Amendment No. 1 to Schedule 13G (the &ldquo;Schedule&rdquo;) is being filed with respect to shares of Common Stock (as defined
below) of SunOpta Inc. <FONT STYLE="font-family: Times New Roman, Times, Serif">(the &ldquo;Issuer&rdquo;) which are beneficially
owned by Ardsley Advisory Partners LP(the &ldquo;Advisor&rdquo;), Philip J. Hempleman (&ldquo;Hempleman&rdquo;), Ardsley Advisory
Partners GP LLC (the &ldquo;Advisor General Partner&rdquo;), Ardsley Partners I GP LLC (the &ldquo;General Partner&rdquo;), Ardsley
Partners Renewable Energy Fund (the &ldquo;Renewable Energy Fund&rdquo;), Ardsley Duckdive Fund, L.P. (the &ldquo;Duckdive Fund&rdquo;),
Ardsley Healthcare Fund, L.P. (the &ldquo;Healthcare Fund&rdquo;), and Ardsley Ridgecrest Partners Fund, L.P. (the &ldquo;Ridgecrest
Fund&rdquo;) (together, the &ldquo;Reporting Persons&rdquo;). See Item 4 below</FONT>. &nbsp;&nbsp;</B></FONT></td></tr>
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></td>
    <TD COLSPAN="4" STYLE="padding-right: 0; padding-left: 0; font: 10pt Times New Roman, Times, Serif; text-align: justify"><FONT STYLE="font-size: 10pt">(b)&nbsp;&nbsp;Address
    of Principal Business Office or, if none, Residence:</FONT></td>
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="font-size: 10pt"><B>262
                                         Harbor Drive </B></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="font-size: 10pt"><B>Stamford,
        CT 06902</B></FONT></P></td></tr>
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></td>
    <TD COLSPAN="2" STYLE="padding-right: 0; padding-left: 0; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">(c)&nbsp;&nbsp;Citizenship:</FONT></td>
    <TD COLSPAN="3" STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif; text-align: justify"><FONT STYLE="font-size: 10pt"><B>The
Advisory General Partner and the General Partner are Delaware limited liability companies. The Advisor, the Healthcare Fund, the
Renewable Energy Fund, the Duckdive Fund and the Ridgecrest Fund are Delaware limited partnerships. Hempleman is a United States
Citizen.</B></FONT></td></tr>
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 0; padding-left: 0; font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif; text-align: justify">&nbsp;</TD></TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 0; padding-left: 0; font: 10pt Times New Roman, Times, Serif"><P STYLE="margin: 0">(d) Title of Class of Securities:</P>


</TD>
    <TD COLSPAN="3" STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif; text-align: justify"><P STYLE="margin: 0"><B>Common
                                         Stock</B></P>


</TD></TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 0; padding-left: 0; font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif; text-align: justify">&nbsp;</TD></TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></td>
    <TD COLSPAN="2" STYLE="padding-right: 0; padding-left: 0; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">(e)&nbsp;&nbsp;CUSIP
    Number:</FONT></td>
    <TD COLSPAN="3" STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt"><B>8676EP108</B></FONT></td></tr>
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="width: 5%; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></td>
    <TD STYLE="width: 27%; font: 10pt Times New Roman, Times, Serif; padding-right: 0; padding-left: 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></td>
    <TD STYLE="width: 2%; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></td>
    <TD STYLE="width: 18%; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></td>
    <TD STYLE="width: 7%; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></td>
    <TD STYLE="width: 41%; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></td></tr>
</table>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-size: 10pt"></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><FONT STYLE="font-size: 10pt"><B>Item 3.</B></FONT> <FONT STYLE="font-size: 10pt"><B> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If this statement is filed pursuant to &sect;&sect;240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:</B></FONT></P>


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

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="width: 9%; padding-right: 3pt; padding-left: 3pt; text-align: right; font: 10pt Times New Roman, Times, Serif; vertical-align: top"><FONT STYLE="font-size: 10pt">(a)</FONT></td>
    <TD STYLE="width: 7%; padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt"><FONT STYLE="font: normal 10pt Wingdings">o</FONT></FONT></td>
    <TD STYLE="width: 84%; padding-right: 3pt; padding-left: 3pt; text-align: justify; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">Broker
    or dealer registered under section 15 of the Act (15 U.S.C. 78o).</FONT></td></tr>
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; text-align: right; font: 10pt Times New Roman, Times, Serif; vertical-align: top"><FONT STYLE="font-size: 10pt">(b)</FONT></td>
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt"><FONT STYLE="font: normal 10pt Wingdings">o</FONT></FONT></td>
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; text-align: justify; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">Bank
    as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).</FONT></td></tr>
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; text-align: right; font: 10pt Times New Roman, Times, Serif; vertical-align: top"><FONT STYLE="font-size: 10pt">(c)</FONT></td>
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt"><FONT STYLE="font: normal 10pt Wingdings">o</FONT></FONT></td>
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">Insurance
    company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).</FONT></td></tr>
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; text-align: right; font: 10pt Times New Roman, Times, Serif; vertical-align: top"><FONT STYLE="font-size: 10pt">(d)</FONT></td>
    <TD STYLE="vertical-align: top; padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt"><FONT STYLE="font: normal 10pt Wingdings">o</FONT></FONT></td>
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; text-align: justify; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">Investment
    company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C 80a-8).</FONT></td></tr>
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; text-align: right; font: 10pt Times New Roman, Times, Serif; vertical-align: top"><FONT STYLE="font-size: 10pt">(e)</FONT></td>
    <TD STYLE="vertical-align: top; padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt"><FONT STYLE="font: normal 10pt Wingdings">x</FONT></FONT></td>
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">An
    investment adviser in accordance with &sect;240.13d-1(b)(1)(ii)(E);</FONT></td></tr>
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; text-align: right; font: 10pt Times New Roman, Times, Serif; vertical-align: top"><FONT STYLE="font-size: 10pt">(f)</FONT></td>
    <TD STYLE="vertical-align: top; padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt"><FONT STYLE="font: normal 10pt Wingdings">o</FONT></FONT></td>
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">An
    employee benefit plan or endowment fund in accordance with &sect;240.13d-1(b)(1)(ii)(F);</FONT></td></tr>
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; text-align: right; font: 10pt Times New Roman, Times, Serif; vertical-align: top"><FONT STYLE="font-size: 10pt">(g)</FONT></td>
    <TD STYLE="vertical-align: top; padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt"><FONT STYLE="font: normal 10pt Wingdings">o</FONT></FONT></td>
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">A
    parent holding company or control person in accordance with &sect; 240.13d-1(b)(1)(ii)(G);</FONT></td></tr>
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; text-align: right; font: 10pt Times New Roman, Times, Serif; vertical-align: top"><FONT STYLE="font-size: 10pt">(h)</FONT></td>
    <TD STYLE="vertical-align: top; padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt"><FONT STYLE="font: normal 10pt Wingdings">o</FONT></FONT></td>
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; text-align: justify; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">A
    savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);</FONT></td></tr>
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; text-align: right; font: 10pt Times New Roman, Times, Serif; vertical-align: top"><FONT STYLE="font-size: 10pt">(i)</FONT></td>
    <TD STYLE="vertical-align: top; padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt"><FONT STYLE="font: normal 10pt Wingdings">o</FONT></FONT></td>
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; text-align: justify; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">A
    church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company
    Act of 1940 (15 U.S.C. 80a-3);</FONT></td></tr>
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; text-align: right; font: 10pt Times New Roman, Times, Serif; vertical-align: top"><FONT STYLE="font-size: 10pt">(j)</FONT></td>
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt"><FONT STYLE="font: normal 10pt Wingdings">o</FONT></FONT></td>
    <TD STYLE="padding-right: 3pt; padding-left: 3pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">Group,
    in accordance with &sect;240.13d-1(b)(1)(ii)(J).</FONT></td></tr>
</table>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-size: 10pt"></FONT></P>

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    <DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">&nbsp;</TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="width: 32%; border: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-top: 12pt; padding-bottom: 12pt; padding-left: 5.4pt"><FONT STYLE="font-size: 10pt">


    CUSIP No. 8676EP108</FONT></td>
    <TD STYLE="width: 35%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: bold 10pt Times New Roman, Times, Serif; padding: 12pt 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt">13G/A</FONT></td>
    <TD STYLE="width: 33%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-top: 12pt; padding-bottom: 12pt; text-align: center"><FONT STYLE="font-size: 10pt">Page
    11 of 14 Pages</FONT></td></tr>
</table>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0%"></TD><TD STYLE="width: 10%; text-align: left"><FONT STYLE="font-size: 10pt"><B>Item 4.</B></FONT></TD><TD STYLE="width: 90%"><FONT STYLE="font-size: 10pt"><B>Ownership.</B></FONT></TD>
</TR></TABLE>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 37.45pt"><FONT STYLE="font-size: 10pt">Provide the
following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item
1.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 37.45pt"><FONT STYLE="font-size: 10pt">The Information
required by Items 4(a) - (c) is set forth in Rows 5-11 of the cover page for each Reporting Person hereto and is incorporated
by reference for each Reporting Person. The percentage ownership of the Reporting Persons is based on the 87,940,787 outstanding
shares of Common Stock of the Issuer, as disclosed on the Issuer&rsquo;s 10-Q filed with the SEC on August 7, 2019.</FONT></P>

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

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0%"></TD><TD STYLE="width: 10%; text-align: left"><FONT STYLE="font-size: 10pt"><B>Item 5.</B></FONT></TD><TD STYLE="width: 90%"><FONT STYLE="font-size: 10pt"><B>Ownership of Five Percent
or Less of a Class.</B></FONT></TD>
</TR></TABLE>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="font-size: 10pt">If this statement
is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more
than five percent of the class of securities, check the following: <FONT STYLE="font: normal 10pt Wingdings">o</FONT><B>.</B></FONT></P>

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

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<TD STYLE="width: 0%"></TD><TD STYLE="width: 10%; text-align: left"><FONT STYLE="font-size: 10pt"><B>Item 6.</B></FONT></TD><TD STYLE="width: 90%"><FONT STYLE="font-size: 10pt"><B>Ownership of More Than
Five Percent on Behalf of Another Person.</B></FONT></TD>
</TR></TABLE>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="font-size: 10pt">Not applicable.</FONT></P>

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

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0%"></TD><TD STYLE="width: 10%; text-align: left"><FONT STYLE="font-size: 10pt"><B>Item 7.</B></FONT></TD><TD STYLE="width: 90%"><FONT STYLE="font-size: 10pt"><B>Identification and Classification
of the Subsidiary which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.</B></FONT></TD>
</TR></TABLE>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="font-size: 10pt">Not applicable.</FONT></P>

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


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

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0%"></TD><TD STYLE="width: 10%; text-align: left"><FONT STYLE="font-size: 10pt"><B>Item 8.</B></FONT></TD><TD STYLE="width: 90%"><FONT STYLE="font-size: 10pt"><B>Identification and Classification
of Members of the Group.</B></FONT></TD>
</TR></TABLE>

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

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

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

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0%"></TD><TD STYLE="width: 10%; text-align: left"><FONT STYLE="font-size: 10pt"><B>Item 9.</B></FONT></TD><TD STYLE="width: 90%"><FONT STYLE="font-size: 10pt"><B>Notice of Dissolution
of Group.</B></FONT></TD>
</TR></TABLE>


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<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="width: 32%; border: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-top: 12pt; padding-bottom: 12pt; padding-left: 5.4pt"><FONT STYLE="font-size: 10pt">


    CUSIP No. 8676EP108</FONT></td>
    <TD STYLE="width: 35%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: bold 10pt Times New Roman, Times, Serif; padding: 12pt 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt">13G/A</FONT></td>
    <TD STYLE="width: 33%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-top: 12pt; padding-bottom: 12pt; text-align: center"><FONT STYLE="font-size: 10pt">Page
    12 of 14 Pages</FONT></td></tr>
</table>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></P>
<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0%"></TD><TD STYLE="width: 10%; text-align: left"><FONT STYLE="font-size: 10pt"><B>Item 10.</B></FONT></TD><TD STYLE="width: 90%"><FONT STYLE="font-size: 10pt"><B>Certification.</B></FONT></TD>
</TR></TABLE>

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

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

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font: 10pt Times New Roman, Times, Serif">
<TR>
    <TD STYLE="width: 10%; font: 10pt Times New Roman, Times, Serif; padding-right: 0; padding-left: 0; text-align: justify; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;&nbsp;(a)</FONT></TD>
    <TD STYLE="width: 90%; padding-right: 0; padding-left: 0">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 46.5pt">The following certification
        shall be included if the statement is filed pursuant to &sect;240.13d-1(b) with respect to the Advisor:</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 0 0 1.5pt; text-align: justify; text-indent: 46.5pt">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. <FONT STYLE="font-family: Wingdings">x</font></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 1.5pt; text-align: justify; text-indent: 40.5pt">&nbsp;</P></TD></TR>
<TR>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding-right: 0; padding-left: 0; text-align: justify; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;&nbsp;(b)</FONT></TD>
    <TD STYLE="padding-right: 0; padding-left: 0">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 46.5pt">The following certification
        shall be included if the statement is filed pursuant to &sect;240.13d-1(c) with respect to the Advisory General Partner, the General
        Partner, Hempleman, the Renewable Energy Fund, the Healthcare Fund, the Duckdive Fund, and the Ridgecrest Fund:</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 0 0pt; text-align: justify; text-indent: 46.5pt">By signing
below I certify that, to the best of my knowledge and belief, the securities referred to above 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. <FONT STYLE="font-family: Wingdings">x</FONT></P></TD></TR>
</TABLE>



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    <TD STYLE="width: 32%; border: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-top: 12pt; padding-bottom: 12pt; padding-left: 5.4pt"><FONT STYLE="font-size: 10pt">


    CUSIP No. 8676EP108</FONT></td>
    <TD STYLE="width: 35%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: bold 10pt Times New Roman, Times, Serif; padding: 12pt 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt">13G/A</FONT></td>
    <TD STYLE="width: 33%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-top: 12pt; padding-bottom: 12pt; text-align: center"><FONT STYLE="font-size: 10pt">Page
    13 of 14 Pages</FONT></td></tr>
</table>

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

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

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

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD NOWRAP STYLE="width: 40%; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt"><U>October 28, 2019</U></FONT></TD>
    <TD NOWRAP STYLE="width: 60%; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">Date</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt"><B>ARDSLEY ADVISORY PARTNERS LP</B></FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><P STYLE="margin: 0"><FONT STYLE="font-size: 10pt">By: Ardsley Advisory
                                         Partners GP LLC, its general partner</FONT></P>


</TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif; border-bottom: Black 1pt solid"><FONT STYLE="font-size: 10pt">By: Steve
    Napoli/ Member of its general partner</FONT></TD>
    <TD NOWRAP STYLE="padding-bottom: 1pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">Name/Title</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif; border-bottom: Black 1pt solid"><FONT STYLE="font-size: 10pt">/s/ Steve
    Napoli</FONT></TD>
    <TD NOWRAP STYLE="padding-bottom: 1pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">Signature</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt"><U>October 28, 2019</U></FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">Date</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt"><B>ARDSLEY ADVISORY PARTNERS GP LLC</B></FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif; border-bottom: Black 1pt solid"><P STYLE="margin: 0"><FONT STYLE="font-size: 10pt">By: Steve Napoli/
                                         Member</FONT></P>


</TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif; padding-bottom: 1pt"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><P STYLE="margin: 0"><FONT STYLE="font-size: 10pt">Name/Title</FONT></P>


</TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif; border-bottom: Black 1pt solid"><FONT STYLE="font-size: 10pt">/s/ Steve
    Napoli</FONT></TD>
    <TD NOWRAP STYLE="padding-bottom: 1pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">Signature</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt"><U>October 28, 2019</U></FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">Date</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt"><B>ARDSLEY PARTNERS I GP LLC&nbsp;</B></FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif; border-bottom: Black 1pt solid"><P STYLE="margin: 0"><FONT STYLE="font-size: 10pt">By: Steve Napoli/
                                         Member</FONT></P>


</TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif; padding-bottom: 1pt"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><P STYLE="margin: 0"><FONT STYLE="font-size: 10pt">Name/Title</FONT></P>


</TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif; border-bottom: Black 1pt solid"><FONT STYLE="font-size: 10pt">/s/ Steve
    Napoli&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif; padding-bottom: 1pt"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><P STYLE="margin: 0 0 0pt"><FONT STYLE="font-size: 10pt">Signature</FONT></P>


<FONT STYLE="font-size: 10pt"></FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt"><U>October 28, 2019</U></FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">Date</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt"><B>PHILIP J. HEMPLEMAN</B></FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt"><B>&nbsp;</B></FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif; border-bottom: Black 1pt solid"><FONT STYLE="font-size: 10pt">By: Steve
    Napoli/Attorney-in Fact for Philip J. Hempleman</FONT></TD>
    <TD NOWRAP STYLE="padding-bottom: 1pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">Name/Title</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif; border-bottom: Black 1pt solid"><FONT STYLE="font-size: 10pt">/s/ Steve
    Napoli*</FONT></TD>
    <TD NOWRAP STYLE="padding-bottom: 1pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">Signature</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.5in"></P>


<P STYLE="margin: 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 47.95pt"></P>

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    <TD STYLE="width: 32%; border: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-top: 12pt; padding-bottom: 12pt; padding-left: 5.4pt"><FONT STYLE="font-size: 10pt">


    CUSIP No. 8676EP108</FONT></td>
    <TD STYLE="width: 35%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: bold 10pt Times New Roman, Times, Serif; padding: 12pt 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt">13G/A</FONT></td>
    <TD STYLE="width: 33%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-top: 12pt; padding-bottom: 12pt; text-align: center"><FONT STYLE="font-size: 10pt">Page
    14 of 14 Pages</FONT></td></tr>
</table>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 47.95pt"></P>



<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 47.95pt"><FONT STYLE="font-size: 10pt"></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 47.95pt"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 47.95pt"></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt"><U>October 28, 2019</U></FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">Date</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><P STYLE="margin: 0"><B>ARDSLEY HEALTHCARE FUND, L.P.</B></P>


</TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">By: Ardsley Partners I GP LLC, General Partner</P>


</TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>

        <TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif; width: 40%; border-bottom: Black 1pt solid"><FONT STYLE="font-size: 9pt">/s/
    Steve Napoli</FONT></TD>
    <TD NOWRAP STYLE="width: 60%; padding-bottom: 1pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">Signature</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>

<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"></TD>
    <TD NOWRAP STYLE="padding-bottom: 1pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>

<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif; border-bottom: Black 1pt solid"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Steve
                                         Napoli/Member of its general partner</P>


</TD>
    <TD NOWRAP STYLE="padding-bottom: 1pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>

<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"></TD></TR>

<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><P STYLE="margin: 0"><U>October 28, 2019</U></P>


</TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">Date</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><P STYLE="margin: 0"><B>ARDSLEY PARTNERS RENEWABLE ENERGY FUND, L.P.</B></P>


</TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">By: Ardsley Partners I GP LLC, General Partner</P>


</TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif; border-bottom: Black 1pt solid"><FONT STYLE="font-size: 9pt">/s/ Steve
    Napoli</FONT></TD>
    <TD NOWRAP STYLE="padding-bottom: 1pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">Signature</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif; border-bottom: Black 1pt solid"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Steve
                                         Napoli/Member of its general partner</P>


</TD>
    <TD NOWRAP STYLE="padding-bottom: 1pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><U>October 28, 2019</U></P>


</TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">Date</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><B>ARDSLEY DUCKDIVE FUND, L.P.</B></P>


</TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">By: Ardsley Partners I GP LLC, General Partner</P>


</TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif; border-bottom: Black 1pt solid"><FONT STYLE="font-size: 9pt">/s/ Steve
    Napoli</FONT></TD>
    <TD NOWRAP STYLE="padding-bottom: 1pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">Signature</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif; border-bottom: Black 1pt solid"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Steve
                                         Napoli/Member of its general partner</P>


</TD>
    <TD NOWRAP STYLE="padding-bottom: 1pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><P STYLE="margin: 0"><U>October 28, 2019</U></P>


</TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">Date</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><B>ARDSLEY RIDGECREST PARTNERS FUND, L.P.</B></P>


</TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">By: Ardsley Partners I GP LLC, General Partner</P>


</TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif; border-bottom: Black 1pt solid"><FONT STYLE="font-size: 9pt">/s/ Steve
    Napoli</FONT></TD>
    <TD NOWRAP STYLE="padding-bottom: 1pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">Signature</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif; border-bottom: Black 1pt solid"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Steve
                                         Napoli/Member of its general partner</P>


</TD>
    <TD NOWRAP STYLE="padding-bottom: 1pt; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 9pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif; border-bottom: Black 1pt solid"><P STYLE="margin: 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">October 28, 2019</P>



<P STYLE="margin: 0"></P>


</TD>
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif; padding-bottom: 1pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD NOWRAP STYLE="font: 10pt Times New Roman, Times, Serif"><P STYLE="margin: 0">Date</P>


</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 47.95pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: -4.5pt"><FONT STYLE="font-size: 10pt">*
Executed by Steve Napoli as Attorney-in-Fact for Philip J. Hempleman. The Power of Attorney for Mr. Hempleman is attached as Exhibit
2 to the Statement on Schedule 13G/A with respect to the Common Stock of Vaxgen, Inc., filed on February 15, 2006, and is incorporated
herein by reference.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="font-size: 10pt">The original
statement shall be signed by each person on whose behalf the statement is filed or his authorized representative. If the statement
is signed on behalf of a person by his authorized representative other than an executive officer or general partner of the filing
person, evidence of the representative&rsquo;s authority to sign on behalf of such person shall be filed with the statement, provided,
however, that a power of attorney for this purpose which is already on file with the Commission may be incorporated by reference.
The name and any title of each person who signs the statement shall be typed or printed beneath his signature.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="font-size: 10pt"><I>NOTE</I>:
Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. <I>See
</I>&sect;240.13d-7 for other parties for whom copies are to be sent.</FONT></P>

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

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="vertical-align: top; width: 10%; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt"><B>Attention:</B></FONT></td>
    <TD STYLE="width: 90%; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt"><B>Intentional misstatements
    or omissions of fact constitute Federal criminal violations (See 18 U.S.C. 1001)</B></FONT></td></tr>
</table>


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