<SEC-DOCUMENT>0001104659-17-006728.txt : 20170206
<SEC-HEADER>0001104659-17-006728.hdr.sgml : 20170206
<ACCEPTANCE-DATETIME>20170206181320
ACCESSION NUMBER:		0001104659-17-006728
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20170126
FILED AS OF DATE:		20170206
DATE AS OF CHANGE:		20170206

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PLUG POWER INC
		CENTRAL INDEX KEY:			0001093691
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRICAL INDUSTRIAL APPARATUS [3620]
		IRS NUMBER:				223672377
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		968 ALBANY-SHAKER ROAD
		CITY:			LATHAM
		STATE:			NY
		ZIP:			12110
		BUSINESS PHONE:		5187827700

	MAIL ADDRESS:	
		STREET 1:		968 ALBANY-SHAKER ROAD
		CITY:			LATHAM
		STATE:			NY
		ZIP:			12110

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			FiveT Capital Holdings AG
		CENTRAL INDEX KEY:			0001697007
		STATE OF INCORPORATION:			V8
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34392
		FILM NUMBER:		17576693

	BUSINESS ADDRESS:	
		STREET 1:		C/O RABER TREUHAND GMBH
		STREET 2:		CHURERSTRASSE 98
		CITY:			PFAFFIKON
		STATE:			V8
		ZIP:			8330
		BUSINESS PHONE:		41 43 322 2510

	MAIL ADDRESS:	
		STREET 1:		C/O RABER TREUHAND GMBH
		STREET 2:		CHURERSTRASSE 98
		CITY:			PFAFFIKON
		STATE:			V8
		ZIP:			8330
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>a3.xml
<DESCRIPTION>3
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2017-01-26</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001093691</issuerCik>
        <issuerName>PLUG POWER INC</issuerName>
        <issuerTradingSymbol>PLUG</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001697007</rptOwnerCik>
            <rptOwnerName>FiveT Capital Holdings AG</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O RABER TREUHAND GMBH</rptOwnerStreet1>
            <rptOwnerStreet2>CHURERSTRASSE 98</rptOwnerStreet2>
            <rptOwnerCity>PFAFFIKON</rptOwnerCity>
            <rptOwnerState>V8</rptOwnerState>
            <rptOwnerZipCode>8330</rptOwnerZipCode>
            <rptOwnerStateDescription>SWITZERLAND</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Series C Redeemable Convertible Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1858256</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                    <footnoteId id="F5"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Series C Redeemable Convertible Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>923819</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnotes</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F4"/>
                    <footnoteId id="F5"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The Series C Redeemable Convertible Preferred Stock (the &quot;Series C Preferred Stock&quot;) is convertible at any time at the option of the holder into shares of the Issuer's Common Stock at a conversion price per share of $0.2343, subject to certain adjustments. The Series C Preferred Stock has no expiration date.</footnote>
        <footnote id="F2">On January 26, 2017, FiveT Capital Holding AG, a limited liability company existing under the laws of Switzerland (&quot;FiveT Capital Holding&quot;), and Five More Special Situations Fund Limited, a Cayman Islands company (&quot;FiveMore Fund&quot;), purchased 1,750 shares and 870 shares, respectively, of the Series C Preferred Stock for an aggregate purchase price of $3,292,850, or $1,256.81 per share.</footnote>
        <footnote id="F3">These shares are held directly by FiveT Capital Holding.</footnote>
        <footnote id="F4">These shares are held directly by FiveMore Fund. FiveT Capital AG (&quot;FiveT Capital&quot;), a wholly-owned subsidiary of FiveT Capital Holding, provides investment advisory services to FiveMore Fund.</footnote>
        <footnote id="F5">Johannes Minho Roth is the Managing Director of FiveT Capital Holding and has equity interests in each of FiveT Capital Holding and FiveMore Fund.  Mr. Roth is a member of the Board of Directors of the Issuer. Each of FiveT Capital Holding, FiveT Capital and FiveMore Fund disclaims beneficial ownership of the shares of Series C Preferred Stock, except to the extent of its respective pecuniary interest therein, if any, and this report shall not be deemed an admission that it is the beneficial owner of any of such shares.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ FiveT Capital Holding AG, by Johannes Minho Roth, Managing Director</signatureName>
        <signatureDate>2017-02-06</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
