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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 VQvanzOI4xnI43kQQl6nbkc/X99ITHzwxPt5H9p8v1M47w5Le5Dfw+nZ+z2GOFob
 5PAGJB4FGBOoZ3N3PASolw==

<SEC-DOCUMENT>0001104659-09-063412.txt : 20091106
<SEC-HEADER>0001104659-09-063412.hdr.sgml : 20091106
<ACCEPTANCE-DATETIME>20091106172057
ACCESSION NUMBER:		0001104659-09-063412
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20091106
FILED AS OF DATE:		20091106
DATE AS OF CHANGE:		20091106

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			STR Holdings, Inc.
		CENTRAL INDEX KEY:			0001473597
		STANDARD INDUSTRIAL CLASSIFICATION:	UNSUPPORTED PLASTICS FILM & SHEET [3081]
		IRS NUMBER:				271023344
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		10 WATER STREET
		CITY:			ENFIELD
		STATE:			CT
		ZIP:			06082
		BUSINESS PHONE:		860-749-8371

	MAIL ADDRESS:	
		STREET 1:		10 WATER STREET
		CITY:			ENFIELD
		STATE:			CT
		ZIP:			06082

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	STR Holdings (New) LLC
		DATE OF NAME CHANGE:	20091001

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			NORTHWESTERN MUTUAL LIFE INSURANCE CO
		CENTRAL INDEX KEY:			0000073076
		STATE OF INCORPORATION:			WI
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34529
		FILM NUMBER:		091165795

	BUSINESS ADDRESS:	
		STREET 1:		720 E WISCONSIN AVENUE
		CITY:			MILWAUKEE
		STATE:			WI
		ZIP:			53202
		BUSINESS PHONE:		4142992508

	MAIL ADDRESS:	
		STREET 1:		720 EAST WISCONSIN AVENUE
		CITY:			MILWAUKEE
		STATE:			WI
		ZIP:			53202
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>a3.xml
<DESCRIPTION>3
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0203</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2009-11-06</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001473597</issuerCik>
        <issuerName>STR Holdings, Inc.</issuerName>
        <issuerTradingSymbol>STRI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000073076</rptOwnerCik>
            <rptOwnerName>NORTHWESTERN MUTUAL LIFE INSURANCE CO</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>720 EAST WISCONSIN AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MILWAUKEE</rptOwnerCity>
            <rptOwnerState>WI</rptOwnerState>
            <rptOwnerZipCode>53202</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock, par value $0.01 per share</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5929216</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>THE NORTHWESTERN MUTUAL LIFE INSURANCE COMPANY By: /s/ Carol L. Kracht Vice President and Deputy General Counsel - Securities and Board Relations</signatureName>
        <signatureDate>2009-11-06</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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