-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 QsceQbRxnbe3boikXZjHs8UNnhbrZCpoKTPdgKirisKiG35yGPPNKAn0k6mzcMjH
 7ClKMnoY8ceqw8ct27AXfw==

<SEC-DOCUMENT>0001181431-08-019293.txt : 20080317
<SEC-HEADER>0001181431-08-019293.hdr.sgml : 20080317
<ACCEPTANCE-DATETIME>20080317175326
ACCESSION NUMBER:		0001181431-08-019293
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080317
FILED AS OF DATE:		20080317
DATE AS OF CHANGE:		20080317

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MAGUIRE ROBERT F III
		CENTRAL INDEX KEY:			0001246344

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31717
		FILM NUMBER:		08694352

	BUSINESS ADDRESS:	
		STREET 1:		C/O MAGUIRE PROPERTIES INC
		STREET 2:		333 S GRAND AVE STE 400
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90071
		BUSINESS PHONE:		2136263300

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MAGUIRE PROPERTIES INC
		CENTRAL INDEX KEY:			0001204560
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				953581408
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1733 OCEAN AVENUE
		STREET 2:		SUITE 400
		CITY:			SANTA MONICA
		STATE:			CA
		ZIP:			90401
		BUSINESS PHONE:		(310) 857-1100

	MAIL ADDRESS:	
		STREET 1:		1733 OCEAN AVENUE
		STREET 2:		SUITE 400
		CITY:			SANTA MONICA
		STATE:			CA
		ZIP:			90401
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd199791.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-03-17</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001204560</issuerCik>
        <issuerName>MAGUIRE PROPERTIES INC</issuerName>
        <issuerTradingSymbol>MPG</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001246344</rptOwnerCik>
            <rptOwnerName>MAGUIRE ROBERT F III</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>333 SOUTH GRAND AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 400</rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90071</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chairman of the Board, CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.01</value>
            </securityTitle>
            <transactionDate>
                <value>2008-03-17</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>C</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>731343</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2493153</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Limited Partnership Units</value>
                <footnoteId id="F2"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F3"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2008-03-17</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>C</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>731343</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F5"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F4"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>731343</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3471045</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">731,343 shares of the Issuer's common stock were issued in exchange for 731,343 units of limited partnership (&quot;OP Units&quot;) in Maguire Properties, L.P., a Maryland limited partnership, of which the Issuer is the general partner.</footnote>
        <footnote id="F2">The OP Units are redeemable effective August 27, 2004 for cash or, at the election of the general partner, for shares of the Issuer's common stock.  The value of the OP Units redeemed is based on the fair market value of an equivalent number of shares of the Issuer's common stock on the date of redemption.  The fair market value is based on the closing price of the common stock as reported on the New York Stock Exchange.</footnote>
        <footnote id="F3">OP Units are redeemable for cash or, at the Issuer's option, on a one-for-one basis into the Issuer's common stock.</footnote>
        <footnote id="F4">Not applicable.</footnote>
        <footnote id="F5">OP Units were received in exchange for the direct or indirect contribution to Maguire Properties, L.P. of certain partnership, membership or ownership interests in certain partnerships, limited liability companies and corporations which own, directly or indirectly, certain properties in Southern California.  The value of the OP Units is $19.00 per unit, based on the price of the Issuer's common stock at the time of its initial public offering on June 25, 2003.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Robert F. Maguire III</signatureName>
        <signatureDate>2008-03-17</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----