content: <?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
    <!-- Generated by Workiva -->
    <headerData>
      <submissionType>144</submissionType>
      <filerInfo>
        <filer>
          <filerCredentials>
            <cik>0001275645</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>1 Vanderbilt Avenue</com:street1>
          <com:city>New York</com:city>
          <com:stateOrCountry>NY</com:stateOrCountry>
          <com:zipCode>10017</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>212-216-1624</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Andrew Mathias</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Affiliate</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>J.P. Morgan Securities LLC</name>
          <address>
            <com:street1>390 Madison Avenue</com:street1>
            <com:street2>6th Floor</com:street2>
            <com:city>New York</com:city>
            <com:stateOrCountry>NY</com:stateOrCountry>
            <com:zipCode>10017</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>19954</noOfUnitsSold>
        <aggregateMarketValue>645312.36</aggregateMarketValue>
        <noOfUnitsOutstanding>64387972</noOfUnitsOutstanding>
        <approxSaleDate>11/02/2023</approxSaleDate>
        <securitiesExchangeName>NYSE</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>02/24/2014</acquiredDate>
        <natureOfAcquisitionTransaction>Stock Award &amp; Stock Dividends</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>19954</amountOfSecuritiesAcquired>
        <paymentDate>02/24/2014</paymentDate>
        <natureOfPayment>compensation and dividends</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <remarks>The shares represented on this filing were acquired as stock award and stock dividends during 02/24/14 - 01/19/22.</remarks>
      <noticeSignature>
        <noticeDate>11/02/2023</noticeDate>
        <signature>/s/ J.P. Morgan Securities LLC as agent and attorney-in-fact for Andrew Mathias</signature>
      </noticeSignature>
    </formData>
  </edgarSubmission>
metadata_documents: [{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 3019}]
text: 144
  0001275645
  XXXXXXXX
  LIVE
  0001040971
  SL Green Realty Corp
  001-13199
  1 Vanderbilt Avenue
  New York
  NY
  10017
  212-216-1624
  Andrew Mathias
  Affiliate
  Common
  J.P. Morgan Securities LLC
  390 Madison Avenue
  6th Floor
  New York
  NY
  10017
  19954
  645312.36
  64387972
  11/02/2023
  NYSE
  Common
  02/24/2014
  Stock Award & Stock Dividends
  Issuer
  N
  19954
  02/24/2014
  compensation and dividends
  Y
  The shares represented on this filing were acquired as stock award and stock dividends during 02/24/14 - 01/19/22.
  11/02/2023
  /s/ J.P. Morgan Securities LLC as agent and attorney-in-fact for Andrew Mathias