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  <headerData>
    <submissionType>144</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001916385</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0001040971</issuerCik>
      <issuerName>SL GREEN REALTY CORP</issuerName>
      <secFileNumber>001-13199</secFileNumber>
      <issuerAddress>
        <com:street1>ONE VANDERBILT AVENUE</com:street1>
        <com:city>NEW YORK</com:city>
        <com:stateOrCountry>NY</com:stateOrCountry>
        <com:zipCode>10017</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>2125942700</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Brown Carol N</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Director</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Wells Fargo Clearing Services</name>
        <address>
          <com:street1>1 N. Jefferson Ave.</com:street1>
          <com:city>St. Louis</com:city>
          <com:stateOrCountry>MO</com:stateOrCountry>
          <com:zipCode>63103</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>5118</noOfUnitsSold>
      <aggregateMarketValue>226844.48</aggregateMarketValue>
      <noOfUnitsOutstanding>64416699</noOfUnitsOutstanding>
      <approxSaleDate>02/09/2024</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>01/10/2024</acquiredDate>
      <natureOfAcquisitionTransaction>Compensation</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>5118</amountOfSecuritiesAcquired>
      <paymentDate>01/10/2024</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>02/09/2024</noticeDate>
      <signature>Carol N. Brown</signature>
    </noticeSignature>
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144
0001916385
XXXXXXXX
LIVE
0001040971
SL GREEN REALTY CORP
001-13199
ONE VANDERBILT AVENUE
NEW YORK
NY
10017
2125942700
Brown Carol N
Director
Common
Wells Fargo Clearing Services
1 N. Jefferson Ave.
St. Louis
MO
63103
5118
226844.48
64416699
02/09/2024
NYSE
Common
01/10/2024
Compensation
Issuer
N
5118
01/10/2024
N/A
Y
02/09/2024
Carol N. Brown