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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 NWJlu00I1thMZ0wNdGyKsTER77TJXnlHw2Mip8gwToSaKpgTr2JZfrGcIuv0lWOj
 LgWW2zC38coQDhMFitXlhQ==

<SEC-DOCUMENT>0001179110-06-014916.txt : 20060710
<SEC-HEADER>0001179110-06-014916.hdr.sgml : 20060710
<ACCEPTANCE-DATETIME>20060710164314
ACCESSION NUMBER:		0001179110-06-014916
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060706
FILED AS OF DATE:		20060710
DATE AS OF CHANGE:		20060710

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MACK CALI REALTY CORP
		CENTRAL INDEX KEY:			0000924901
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				223305147
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		11 COMMERCE DR
		STREET 2:		1ST FLOOR
		CITY:			CRANFORD
		STATE:			NJ
		ZIP:			07016
		BUSINESS PHONE:		9082728000

	MAIL ADDRESS:	
		STREET 1:		11 COMMERCE DRIVE
		STREET 2:		1ST FLOOR
		CITY:			CRANFORD
		STATE:			NJ
		ZIP:			07016

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CALI REALTY CORP /NEW/
		DATE OF NAME CHANGE:	19960730

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CALI REALTY L P
		DATE OF NAME CHANGE:	19941025

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CALI REALTY CORP
		DATE OF NAME CHANGE:	19940608

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MACK WILLIAM L
		CENTRAL INDEX KEY:			0001051774
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13274
		FILM NUMBER:		06954318

	BUSINESS ADDRESS:	
		STREET 1:		11 COMMERCE DR
		STREET 2:		1ST FLOOR
		CITY:			CRANFORD
		STATE:			NJ
		ZIP:			07016
		BUSINESS PHONE:		9082728000

	MAIL ADDRESS:	
		STREET 1:		11 COMMERCE DRIVE
		STREET 2:		1ST FLOOR
		CITY:			CRANFORD
		STATE:			NJ
		ZIP:			07016
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 4 -
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-07-06</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000924901</issuerCik>
        <issuerName>MACK CALI REALTY CORP</issuerName>
        <issuerTradingSymbol>CLI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001051774</rptOwnerCik>
            <rptOwnerName>MACK WILLIAM L</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O MACK-CALI REALTY CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>11 COMMERCE DRIVE</rptOwnerStreet2>
            <rptOwnerCity>CRANFORD</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>07016</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Phantom Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0</value>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2006-07-06</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>301</value>
                    <footnoteId id="F2"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>46.16</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>1988-08-08</value>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <value>1988-08-08</value>
                <footnoteId id="F3"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>301</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>6265.544</value>
                    <footnoteId id="F4"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The phantom stock units convert to common stock on a one-for-one basis.</footnote>
        <footnote id="F2">The number of phantom stock units awarded is comprised of a quarterly director's fee earned and a quarterly dividend credited on cumulative phantom stock units under the Mack-Cali Realty Corporation Deferred Compensation Plan for Directors.</footnote>
        <footnote id="F3">The phantom stock units were accrued under the Mack-Cali Realty Corporation Deferred Compensation Plan for Directors and are to be settled 100% in Common Stock upon the termination of the reporting person's service on the Board of Directors of the Corporation or upon a change in control of the Mack-Cali Realty Corporation.</footnote>
        <footnote id="F4">Excludes the following securities directly beneficially owned by the reporting person: (i) 332,270 common units of limited partnership interest of Mack-Cali Realty, L.P. (&quot;Common Units&quot;); and (ii) options to purchase 28,000 shares of common stock. Also excludes the following securities indirectly beneficially owned by the reporting person: (i) 2,064,843.73 Common Units held by a Grantor Retained Annuity Trust (the &quot;GRAT&quot;); (ii) 50,000 Common Units held by the William &amp; Phyllis Mack Foundation, Inc., a charitable foundation of which the reporting person is a trustee (the &quot;Foundation&quot;); and (iii) 833,769.02 Common Units held by other trusts (the &quot;Trusts&quot;).  Pursuant to Rule 13d-4, the reporting person disclaims beneficial ownership of all securities held by the GRAT, the Foundation and the Trusts.  The foregoing ownership amounts reflect the transfer of 156,577 Common Units from the GRAT to the reporting person on January 19, 2006, a transac
tion exempt from reporting under Rule 16a-13.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ William L. Mack</signatureName>
        <signatureDate>2006-07-10</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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