-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 UrBqn3YOMylTVjIzZZ7v29LJTu/9QkdBHYhGdMGMc7rwT9D11qukMeMmAYjAHXQn
 8XGN+sA/0meW0yh0QHGFeA==

<SEC-DOCUMENT>0000931017-07-000039.txt : 20071119
<SEC-HEADER>0000931017-07-000039.hdr.sgml : 20071119
<ACCEPTANCE-DATETIME>20071119165508
ACCESSION NUMBER:		0000931017-07-000039
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20071115
FILED AS OF DATE:		20071119
DATE AS OF CHANGE:		20071119

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Winthrop Realty Trust
		CENTRAL INDEX KEY:			0000037008
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				346513657
		STATE OF INCORPORATION:			OH
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		7 BULFINCH PLACE
		STREET 2:		SUITE 500 PO BOX 9507
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02114
		BUSINESS PHONE:		6175704614

	MAIL ADDRESS:	
		STREET 1:		7 BULFINCH PLACE
		STREET 2:		SUITE 500 PO BOX 9507
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02114

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FIRST UNION REAL ESTATE EQUITY & MORTGAGE INVESTMENTS
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FIRST UNION REALTY
		DATE OF NAME CHANGE:	19691012

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			WEM FUR INVESTORS LLC
		CENTRAL INDEX KEY:			0001274894
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-06249
		FILM NUMBER:		071257093

	MAIL ADDRESS:	
		STREET 1:		100 JERICHO QUADRANGLE
		STREET 2:		STE 214
		CITY:			JERICHO
		STATE:			NY
		ZIP:			11753

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			FUR INVESTORS LLC
		CENTRAL INDEX KEY:			0001271267
		STATE OF INCORPORATION:			DE

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-06249
		FILM NUMBER:		071257094

	BUSINESS ADDRESS:	
		STREET 1:		TWO JERICHO PLAZA
		STREET 2:		WING A, SUITE 111
		CITY:			JERICHO
		STATE:			NY
		ZIP:			11753
		BUSINESS PHONE:		6175704600

	MAIL ADDRESS:	
		STREET 1:		7 BULFINCH PLACE
		STREET 2:		SUITE 500
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02114

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			ASHNER MICHAEL L
		CENTRAL INDEX KEY:			0001139233

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-06249
		FILM NUMBER:		071257095

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		5168220022

	MAIL ADDRESS:	
		STREET 1:		C/O WINTHROP FINANCIAL ASSOCIATES
		STREET 2:		TWO JERICHO PLAZA WING A
		CITY:			JERICHO
		STATE:			NY
		ZIP:			11753

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			FUR HOLDINGS LLC
		CENTRAL INDEX KEY:			0001275105
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-06249
		FILM NUMBER:		071257096

	BUSINESS ADDRESS:	
		STREET 1:		TWO JERICHO PLAZA
		STREET 2:		WING A, SUITE 111
		CITY:			JERICHO
		STATE:			NY
		ZIP:			11753
		BUSINESS PHONE:		6175704600

	MAIL ADDRESS:	
		STREET 1:		7 BULFINCH PLACE
		STREET 2:		SUITE 500
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02114
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2007-11-15</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000037008</issuerCik>
        <issuerName>Winthrop Realty Trust</issuerName>
        <issuerTradingSymbol>FUR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001139233</rptOwnerCik>
            <rptOwnerName>ASHNER MICHAEL L</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O WINTHROP FINANCIAL ASSOCIATES</rptOwnerStreet1>
            <rptOwnerStreet2>TWO JERICHO PLAZA WING A</rptOwnerStreet2>
            <rptOwnerCity>JERICHO</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>11753</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chairman and CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001271267</rptOwnerCik>
            <rptOwnerName>FUR INVESTORS LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>7 BULFINCH PLACE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 500</rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02114</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001275105</rptOwnerCik>
            <rptOwnerName>FUR HOLDINGS LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>7 BULFINCH PLACE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 500</rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02114</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001274894</rptOwnerCik>
            <rptOwnerName>WEM FUR INVESTORS LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>TWO JERICHO PLAZA</rptOwnerStreet1>
            <rptOwnerStreet2>WING A, SUITE 111</rptOwnerStreet2>
            <rptOwnerCity>JERICHO</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>11753</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Shares of Beneficial Interest</value>
            </securityTitle>
            <transactionDate>
                <value>2007-11-15</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>25000</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>5.12</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>11102000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>see</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Shares of Beneficial Interest</value>
            </securityTitle>
            <transactionDate>
                <value>2007-11-16</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>25000</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>5.27</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>11127000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>see</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Shares were acquired by FUR Investors LLC (&quot;Investors&quot;), an entity wholly-owned by FUR Holdings LLC (&quot;Holdings&quot;).  WEM-FUR Investors LLC (&quot;WEM&quot;) holds a 35.591% interest in Holdings and the Reporting Person is the managing member of, and holds a 72.6% interest in, WEM.  For purposes of Section 16 of the Act, Holdings, WEM and Mr. Ashner may be deemed to own a 100%, 35.591% and 25.84% beneficial interest, respectively, in any securities reported herein which are held by Investors.</footnote>
        <footnote id="F2">Shares are comprised of (i) 27,000 shares held directly by Michael L. Ashner and (ii) 11,100,000 shares held by Investors.  Mr. Ashner disclaims beneficial ownership to 8,231,760 shares owned by Investors.  Accordingly, in accordance with the ownership percentages set forth in footnote (1) above, for purposes of Section 16 of the Act: (i) Investors beneficially owns 11,100,000 shares of Beneficial Interest, (ii) Holdings beneficially owns the number of shares of Beneficial Interest listed by Investors as held by Investors, (iii) WEM beneficially owns 3,986,010 shares of Beneficial Interest, and (iii) Mr. Ashner beneficially owns 2,868,240 shares of Beneficial Interest held by Investors.</footnote>
    </footnotes>

    <remarks>This statement is filed as a joint report pursuant to Rule 16a-3(j) promulgated under the Securities Exchange Act of 1934 (the &quot;Act&quot;) by the undersigned Reporting Person and by the entities listed on the attached Joint Filer Information Sheet who are deemed to constitute a &quot;group&quot; beneficially owning more than 10% of the Issuer's shares of beneficial interest, par value $1.00 per share under Section 13(d) of the Act.</remarks>

    <ownerSignature>
        <signatureName>Michael L. Ashner</signatureName>
        <signatureDate>2007-11-19</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>FUR Investors LLC</signatureName>
        <signatureDate>2007-11-19</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>FUR Holdings LLC</signatureName>
        <signatureDate>2007-11-19</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>WEM-FUR Investors LLC</signatureName>
        <signatureDate>2007-11-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----