<SEC-DOCUMENT>0000899243-15-001931.txt : 20150730
<SEC-HEADER>0000899243-15-001931.hdr.sgml : 20150730
<ACCEPTANCE-DATETIME>20150730161817
ACCESSION NUMBER:		0000899243-15-001931
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20150728
FILED AS OF DATE:		20150730
DATE AS OF CHANGE:		20150730

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

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			1700480 ONTARIO INC
		CENTRAL INDEX KEY:			0001625247
		STATE OF INCORPORATION:			A6
		FISCAL YEAR END:			1031

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12504
		FILM NUMBER:		151016401

	BUSINESS ADDRESS:	
		STREET 1:		20 QUEEN STREET WEST
		CITY:			TORONTO
		STATE:			A6
		ZIP:			M5H 3R4
		BUSINESS PHONE:		416-598-8200

	MAIL ADDRESS:	
		STREET 1:		20 QUEEN STREET WEST
		CITY:			TORONTO
		STATE:			A6
		ZIP:			M5H 3R4
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2015-07-28</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001625247</rptOwnerCik>
            <rptOwnerName>1700480 ONTARIO INC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>20 QUEEN STREET WEST</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>TORONTO</rptOwnerCity>
            <rptOwnerState>A6</rptOwnerState>
            <rptOwnerZipCode>M5H 3R4</rptOwnerZipCode>
            <rptOwnerStateDescription>ONTARIO, CANADA</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2015-07-28</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>5</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value>E</value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>27682</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                    <footnoteId id="F1"/>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>23286237</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F2"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">On July 28, 2015, Ontario Teachers' Pension Plan Board transferred 27,682 shares of Common Stock held directly by Ontario Teachers' Pension Plan Board to 1700480 Ontario Inc., its wholly owned subsidiary. Ontario Teachers' Pension Plan Board remains a beneficial owner of these 27,682 shares of Common Stock. The transfer is exempt from Section 16 of the Securities Exchange Act of 1934 (the &quot;Exchange Act&quot;) pursuant to Exchange Act Rule 16a-13.</footnote>
        <footnote id="F2">1700480 Ontario Inc. and Ontario Teachers' Pension Plan Board are directors by deputization for purposes of Section 16 of the Exchange Act.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Sandra Hardy, Authorized Person on behalf of 1700480 Ontario Inc.</signatureName>
        <signatureDate>2015-07-30</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
