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            <ccc>XXXXXXXX</ccc>
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        <liveTestFlag>LIVE</liveTestFlag>
  
  
  
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      <issuerInfo>
        <issuerCik>0001782754</issuerCik>
        <issuerName>AZEK Co Inc.</issuerName>
        <secFileNumber>001-39322</secFileNumber>
        <issuerAddress>
          <com:street1>1330 W FULTON STREET, #350</com:street1>
          <com:city>CHICAGO</com:city>
          <com:stateOrCountry>IL</com:stateOrCountry>
          <com:zipCode>60607</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>877-275-2935</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Singh Jesse G</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Officer</relationshipToIssuer>
          <relationshipToIssuer>Director</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Class A</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>Fidelity Brokerage Services LLC</name>
          <address>
            <com:street1>900 Salem Street</com:street1>
            <com:city>Smithfield</com:city>
            <com:stateOrCountry>RI</com:stateOrCountry>
            <com:zipCode>02917</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>20000</noOfUnitsSold>
        <aggregateMarketValue>934366.58</aggregateMarketValue>
        <noOfUnitsOutstanding>145518785</noOfUnitsOutstanding>
        <approxSaleDate>06/18/2024</approxSaleDate>
        <securitiesExchangeName>NYSE</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Class A</securitiesClassTitle>
        <acquiredDate>12/23/2016</acquiredDate>
        <natureOfAcquisitionTransaction>Restricted Stock Vesting</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>20000</amountOfSecuritiesAcquired>
        <paymentDate>12/23/2016</paymentDate>
        <natureOfPayment>Compensation</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Jesse G. Singh</name>
          <address>
            <com:street1>1330 W Fulton Street</com:street1>
            <com:street2>Suite 350</com:street2>
            <com:city>Chicago</com:city>
            <com:stateOrCountry>IL</com:stateOrCountry>
            <com:zipCode>60607</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Class A</securitiesClassTitle>
        <saleDate>04/10/2024</saleDate>
        <amountOfSecuritiesSold>13000</amountOfSecuritiesSold>
        <grossProceeds>627946.25</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Jesse G. Singh</name>
          <address>
            <com:street1>1330 W Fulton Street</com:street1>
            <com:street2>Suite 350</com:street2>
            <com:city>Chicago</com:city>
            <com:stateOrCountry>IL</com:stateOrCountry>
            <com:zipCode>60607</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Class A</securitiesClassTitle>
        <saleDate>05/10/2024</saleDate>
        <amountOfSecuritiesSold>13000</amountOfSecuritiesSold>
        <grossProceeds>597551.46</grossProceeds>
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          <name>Jesse G. Singh</name>
          <address>
            <com:street1>1330 W Fulton Street</com:street1>
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            <com:city>Chicago</com:city>
            <com:stateOrCountry>IL</com:stateOrCountry>
            <com:zipCode>60607</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Class A</securitiesClassTitle>
        <saleDate>06/17/2024</saleDate>
        <amountOfSecuritiesSold>13000</amountOfSecuritiesSold>
        <grossProceeds>609572.93</grossProceeds>
      </securitiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>06/18/2024</noticeDate>
        <signature>/s/ Emily Navaro, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Jesse G. Singh.</signature>
      </noticeSignature>
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text: 144
  0001594032
  XXXXXXXX
  LIVE
  0001782754
  AZEK Co Inc.
  001-39322
  1330 W FULTON STREET, #350
  CHICAGO
  IL
  60607
  877-275-2935
  Singh Jesse G
  Officer
  Director
  Class A
  Fidelity Brokerage Services LLC
  900 Salem Street
  Smithfield
  RI
  02917
  20000
  934366.58
  145518785
  06/18/2024
  NYSE
  Class A
  12/23/2016
  Restricted Stock Vesting
  Issuer
  N
  20000
  12/23/2016
  Compensation
  N
  Jesse G. Singh
  1330 W Fulton Street
  Suite 350
  Chicago
  IL
  60607
  Class A
  04/10/2024
  13000
  627946.25
  Jesse G. Singh
  1330 W Fulton Street
  Suite 350
  Chicago
  IL
  60607
  Class A
  05/10/2024
  13000
  597551.46
  Jesse G. Singh
  1330 W Fulton Street
  Suite 350
  Chicago
  IL
  60607
  Class A
  06/17/2024
  13000
  609572.93
  06/18/2024
  /s/ Emily Navaro, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Jesse G. Singh.