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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 Ax3pPENg/FLHCeAw3c7z6f8A8nz2z/11T7pBNvlkZ4kYeUjKfkayHtQ4sOp9yIPR
 DQqd3chMF0LkLUJERKHVbQ==

<SEC-DOCUMENT>0001181431-09-036641.txt : 20090728
<SEC-HEADER>0001181431-09-036641.hdr.sgml : 20090728
<ACCEPTANCE-DATETIME>20090728172242
ACCESSION NUMBER:		0001181431-09-036641
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20090728
FILED AS OF DATE:		20090728
DATE AS OF CHANGE:		20090728

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Stuart William John
		CENTRAL INDEX KEY:			0001362472

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-30865
		FILM NUMBER:		09968039

	MAIL ADDRESS:	
		STREET 1:		AVICI SYSTEMS INC.
		STREET 2:		101 BILLERICA DRIVE
		CITY:			NORTH BILLERICA
		STATE:			MA
		ZIP:			01862

	FORMER NAME:	
		FORMER CONFORMED NAME:	Stuart William James
		DATE OF NAME CHANGE:	20060511

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SOAPSTONE NETWORKS INC.
		CENTRAL INDEX KEY:			0001094895
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				020493372
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		296 CONCORD ROAD
		STREET 2:		SUITE 308
		CITY:			BILLERICA
		STATE:			MA
		ZIP:			01821
		BUSINESS PHONE:		978 715-2337

	MAIL ADDRESS:	
		STREET 1:		296 CONCORD ROAD
		STREET 2:		SUITE 308
		CITY:			BILLERICA
		STATE:			MA
		ZIP:			01821

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AVICI SYSTEMS INC
		DATE OF NAME CHANGE:	20000516
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd249161.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-07-28</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001094895</issuerCik>
        <issuerName>SOAPSTONE NETWORKS INC.</issuerName>
        <issuerTradingSymbol>SOAP</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001362472</rptOwnerCik>
            <rptOwnerName>Stuart William John</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>SOAPSTONE NETWORKS INC.</rptOwnerStreet1>
            <rptOwnerStreet2>ONE FEDERAL STREET</rptOwnerStreet2>
            <rptOwnerCity>BILLERICA</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>01821</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Sr. VP of Finance and CFO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2009-07-28</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>23901</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>4.17</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>/s/ William J. Stuart</signatureName>
        <signatureDate>2009-07-28</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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