<SEC-DOCUMENT>0001179110-13-009320.txt : 20130529
<SEC-HEADER>0001179110-13-009320.hdr.sgml : 20130529
<ACCEPTANCE-DATETIME>20130529190112
ACCESSION NUMBER:		0001179110-13-009320
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20130524
FILED AS OF DATE:		20130529
DATE AS OF CHANGE:		20130529

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Leanse Thomas J.
		CENTRAL INDEX KEY:			0001557099

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12504
		FILM NUMBER:		13879551

	MAIL ADDRESS:	
		STREET 1:		THE MACERICH COMPANY
		STREET 2:		401 WILSHIRE BLVED., SUITE 700
		CITY:			SANTA MONICA
		STATE:			CA
		ZIP:			90401

	FORMER NAME:	
		FORMER CONFORMED NAME:	Leanse Thomas Jay
		DATE OF NAME CHANGE:	20120828

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MACERICH CO
		CENTRAL INDEX KEY:			0000912242
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				954448705
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		401 WILSHIRE BLVD
		STREET 2:		STE 700
		CITY:			SANTA MONICA
		STATE:			CA
		ZIP:			90401
		BUSINESS PHONE:		3103946000

	MAIL ADDRESS:	
		STREET 1:		401 WILSHIRE BLVD SUITE 700
		CITY:			SANTA MONICA
		STATE:			CA
		ZIP:			90401
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 4 -
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2013-05-24</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000912242</issuerCik>
        <issuerName>MACERICH CO</issuerName>
        <issuerTradingSymbol>MAC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001557099</rptOwnerCik>
            <rptOwnerName>Leanse Thomas J.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>THE MACERICH COMPANY</rptOwnerStreet1>
            <rptOwnerStreet2>401 WILSHIRE BLVD., SUITE 700</rptOwnerStreet2>
            <rptOwnerCity>SANTA MONICA</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90401</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Senior EVP</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2013-05-24</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>66.455</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1411</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">The purchase price ranged from $66.44 to $66.46 per share.</footnote>
        <footnote id="F2">The reporting person also holds 161 shares in a trust for the benefit of one of his children.</footnote>
        <footnote id="F3">In addition, 50 shares are held by his adult child who is currently sharing the reporting person's household. The reporting person disclaims beneficial ownership of all shares held by this child, and this report should not be deemed an admission that the reporting person is the beneficial owner of such shares for purposes of Section 16 or otherwise.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Madonna R. Shannon, for THOMAS J. LEANSE</signatureName>
        <signatureDate>2013-05-29</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
