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    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001450653</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



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  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0001441236</issuerCik>
      <issuerName>Clearwater Paper Corp</issuerName>
      <secFileNumber>001-34146</secFileNumber>
      <issuerAddress>
        <com:street1>601 WEST RIVERSIDE AVENUE</com:street1>
        <com:street2>SUITE 1100</com:street2>
        <com:city>SPOKANE</com:city>
        <com:stateOrCountry>WA</com:stateOrCountry>
        <com:zipCode>99201</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>509.344.5900</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Gadd Michael S</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</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>6126</noOfUnitsSold>
      <aggregateMarketValue>196950.90</aggregateMarketValue>
      <noOfUnitsOutstanding>16916299</noOfUnitsOutstanding>
      <approxSaleDate>05/05/2023</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>03/07/2021</acquiredDate>
      <natureOfAcquisitionTransaction>Equity Awards</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>1002</amountOfSecuritiesAcquired>
      <paymentDate>03/07/2021</paymentDate>
      <natureOfPayment>Compensation</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>12/31/2011</acquiredDate>
      <natureOfAcquisitionTransaction>Equity Awards</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>5124</amountOfSecuritiesAcquired>
      <paymentDate>12/31/2011</paymentDate>
      <natureOfPayment>Compensation</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>05/05/2023</noticeDate>
      <planAdoptionDates>
        <planAdoptionDate>02/23/2023</planAdoptionDate>
      </planAdoptionDates>
      <signature>/s/ Jennifer Ruchti, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Michael S. Gadd</signature>
    </noticeSignature>
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144
0001450653
XXXXXXXX
LIVE
0001441236
Clearwater Paper Corp
001-34146
601 WEST RIVERSIDE AVENUE
SUITE 1100
SPOKANE
WA
99201
509.344.5900
Gadd Michael S
Officer
Common
Fidelity Brokerage Services LLC
900 Salem Street
Smithfield
RI
02917
6126
196950.90
16916299
05/05/2023
NYSE
Common
03/07/2021
Equity Awards
Issuer
N
1002
03/07/2021
Compensation
Common
12/31/2011
Equity Awards
Issuer
N
5124
12/31/2011
Compensation
Y
05/05/2023
02/23/2023
/s/ Jennifer Ruchti, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Michael S. Gadd