<SEC-DOCUMENT>0001179110-19-008721.txt : 20190718
<SEC-HEADER>0001179110-19-008721.hdr.sgml : 20190718
<ACCEPTANCE-DATETIME>20190718180002
ACCESSION NUMBER:		0001179110-19-008721
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20190716
FILED AS OF DATE:		20190718
DATE AS OF CHANGE:		20190718

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Dillard Lauren B.
		CENTRAL INDEX KEY:			0001693945

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13199
		FILM NUMBER:		19962052

	MAIL ADDRESS:	
		STREET 1:		SL GREEN REALTY CORP.
		STREET 2:		420 LEXINGTON AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10170

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SL GREEN REALTY CORP
		CENTRAL INDEX KEY:			0001040971
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				133956775
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		420 LEXINGTON AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10170
		BUSINESS PHONE:		2125942700

	MAIL ADDRESS:	
		STREET 1:		420 LEXINGTON AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10170
</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>2019-07-16</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001040971</issuerCik>
        <issuerName>SL GREEN REALTY CORP</issuerName>
        <issuerTradingSymbol>SLG</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001693945</rptOwnerCik>
            <rptOwnerName>Dillard Lauren B.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O SL GREEN REALTY CORP.</rptOwnerStreet1>
            <rptOwnerStreet2>420 LEXINGTON AVENUE</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10170</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>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2019-07-16</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>568.006</value>
                    <footnoteId id="F2"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F3"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>568.006</value>
                    <footnoteId id="F2"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>12569.355</value>
                </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 1-for-1 basis.</footnote>
        <footnote id="F2">Includes 124.754 Phantom Stock Units accrued pursuant to deemed reinvestment of dividend equivalents on Phantom Stock Units.</footnote>
        <footnote id="F3">The Phantom Stock Units become payable in Common Stock (or in certain cases in cash) upon (unless the reporting person elects otherwise in accordance with the documents governing the applicable program) the earlier of (i) the January 1 coincident with or next following the earlier of (A) the reporting person's ceasing to be a director, and (B) the reporting person's death, and (ii) a change of control of the Issuer (as determined under such governing documents), in each case to the extent vested.  In addition, the reporting person (i) has been permitted to elect to receive distributions in the form of installment payments, and (ii) may be permitted to receive distributions for certain unforeseeable emergencies.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Lauren B. Dillard, by Andrew S. Levine, attorney-in-fact</signatureName>
        <signatureDate>2019-07-18</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
