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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 GlelFNaF0YznG1/PN407mW/W/O5S4Kjt/p2yCvuakroVrwgrBrhDC0jy58EjvdGw
 8ADUlYH1SD0GjC92K/q2AQ==

<SEC-DOCUMENT>0001179110-10-004224.txt : 20100302
<SEC-HEADER>0001179110-10-004224.hdr.sgml : 20100302
<ACCEPTANCE-DATETIME>20100302183532
ACCESSION NUMBER:		0001179110-10-004224
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20100226
FILED AS OF DATE:		20100302
DATE AS OF CHANGE:		20100302

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SIMON PROPERTY GROUP INC /DE/
		CENTRAL INDEX KEY:			0001063761
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				046268599
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		225 WEST WASHINGTON STREET
		CITY:			INDIANAPOLIS
		STATE:			IN
		ZIP:			46204-3438
		BUSINESS PHONE:		317-636-1600

	MAIL ADDRESS:	
		STREET 1:		225 WEST WASHINGTON STREET
		CITY:			INDIANAPOLIS
		STATE:			IN
		ZIP:			46204-3438

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CORPORATE PROPERTY INVESTORS INC
		DATE OF NAME CHANGE:	19980610

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MH Holdings, Inc.
		CENTRAL INDEX KEY:			0001320100
		STATE OF INCORPORATION:			IN
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-14469
		FILM NUMBER:		10650833

	BUSINESS ADDRESS:	
		STREET 1:		115 W. WASHINGTON STREET
		CITY:			INDIANAPOLIS
		STATE:			IN
		ZIP:			46204
		BUSINESS PHONE:		317-636-1600

	MAIL ADDRESS:	
		STREET 1:		115 W. WASHINGTON STREET
		CITY:			INDIANAPOLIS
		STATE:			IN
		ZIP:			46204
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 4 -
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2010-02-26</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001063761</issuerCik>
        <issuerName>SIMON PROPERTY GROUP INC /DE/</issuerName>
        <issuerTradingSymbol>SPG</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001320100</rptOwnerCik>
            <rptOwnerName>MH Holdings, Inc.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>225 W. WASHINGTON ST.</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>INDIANAPOLIS</rptOwnerCity>
            <rptOwnerState>IN</rptOwnerState>
            <rptOwnerZipCode>46204</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2010-02-26</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>328598</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>78.51</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>23553</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Private sale from MH Holdings, Inc. to The Herbert Simon Revocable Trust u/a/d December 19, 2008 (the &quot;Trust&quot;).  Herbert Simon is the trustee of the Trust, which is the 50% owner of MH Holdings, Inc.</footnote>
        <footnote id="F2">Includes 8,899 common shares received on March 18, 2009, 3,051 common shares received on June 19, 2009, 2,435 common shares received on September 18, 2009 and 2,166 common shares received on December 18, 2009 as dividends.  The Company's quarterly dividends in 2009 were paid in a combination of cash and shares of common stock.  Although the reporting person owns less than 10%, it may be considered part of a group that beneficially owns more than 10%.  Other members of the group have reported the securities reported on this form as indirectly owned by such persons.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Herbert Simon, 50% Owner of MH Holdings, Inc. by his attorney-in-fact, Shelly J. Doran</signatureName>
        <signatureDate>2010-03-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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