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>0001784838</cik>
            <ccc>XXXXXXXX</ccc>
          </filerCredentials>
        </filer>
        <liveTestFlag>LIVE</liveTestFlag>
  
  
  
      </filerInfo>
    </headerData>
    <formData>
      <issuerInfo>
        <issuerCik>0000074303</issuerCik>
        <issuerName>Heidi Alderman</issuerName>
        <secFileNumber>001-01070</secFileNumber>
        <issuerAddress>
          <com:street1>190 Carondelet Plaza</com:street1>
          <com:street2>Suite 1530</com:street2>
          <com:city>Clayton</com:city>
          <com:stateOrCountry>MO</com:stateOrCountry>
          <com:zipCode>63105</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>973-609-0410</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Heidi Alderman</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Director</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Common Stock</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>Computershare</name>
          <address>
            <com:street1>144 Fernwood Avenue</com:street1>
            <com:city>Edison</com:city>
            <com:stateOrCountry>AL</com:stateOrCountry>
            <com:zipCode>08837</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>2000</noOfUnitsSold>
        <aggregateMarketValue>125280</aggregateMarketValue>
        <noOfUnitsOutstanding>136960837</noOfUnitsOutstanding>
        <approxSaleDate>01/31/2023</approxSaleDate>
        <securitiesExchangeName>NYSE</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Common Stock</securitiesClassTitle>
        <acquiredDate>08/21/2019</acquiredDate>
        <natureOfAcquisitionTransaction>Director Compensation</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Olin Corporation</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>2000</amountOfSecuritiesAcquired>
        <paymentDate>01/31/2023</paymentDate>
        <natureOfPayment>Director Fees</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>01/30/2023</noticeDate>
        <signature>/s/ Heidi Alderman</signature>
      </noticeSignature>
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text: 144
  0001784838
  XXXXXXXX
  LIVE
  0000074303
  Heidi Alderman
  001-01070
  190 Carondelet Plaza
  Suite 1530
  Clayton
  MO
  63105
  973-609-0410
  Heidi Alderman
  Director
  Common Stock
  Computershare
  144 Fernwood Avenue
  Edison
  AL
  08837
  2000
  125280
  136960837
  01/31/2023
  NYSE
  Common Stock
  08/21/2019
  Director Compensation
  Olin Corporation
  N
  2000
  01/31/2023
  Director Fees
  Y
  01/30/2023
  /s/ Heidi Alderman