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      <liveTestFlag>LIVE</liveTestFlag>



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    <issuerInfo>
      <issuerCik>0001530950</issuerCik>
      <issuerName>Post Holdings, Inc.</issuerName>
      <secFileNumber>001-35305</secFileNumber>
      <issuerAddress>
        <com:street1>2503 S. HANLEY ROAD</com:street1>
        <com:city>ST. LOUIS</com:city>
        <com:stateOrCountry>MO</com:stateOrCountry>
        <com:zipCode>63144</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>314-644-7600</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>GROTE ROBERT E</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Director</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Charles Schwab &amp; Co., Inc.</name>
        <address>
          <com:street1>3000 Schwab Way</com:street1>
          <com:city>Westlake</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>76262</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>16845</noOfUnitsSold>
      <aggregateMarketValue>1761718.00</aggregateMarketValue>
      <noOfUnitsOutstanding>60585877</noOfUnitsOutstanding>
      <approxSaleDate>06/05/2024</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>01/31/2021</acquiredDate>
      <natureOfAcquisitionTransaction>Restricted Stock Lapse</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>POST HOLDINGS, INC</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>920</amountOfSecuritiesAcquired>
      <paymentDate>01/31/2021</paymentDate>
      <natureOfPayment>Equity Compensation</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>08/13/2021</acquiredDate>
      <natureOfAcquisitionTransaction>Stock Appreciation Right</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>POST HOLDINGS, INC</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>4392</amountOfSecuritiesAcquired>
      <paymentDate>08/13/2021</paymentDate>
      <natureOfPayment>Equity Compensation</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>02/02/2022</acquiredDate>
      <natureOfAcquisitionTransaction>Restricted Stock Lapse</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>POST HOLDINGS, INC</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>1600</amountOfSecuritiesAcquired>
      <paymentDate>02/02/2022</paymentDate>
      <natureOfPayment>Equity Compensation</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>11/21/2022</acquiredDate>
      <natureOfAcquisitionTransaction>Stock Appreciation Right</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>POST HOLDINGS, INC</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>3364</amountOfSecuritiesAcquired>
      <paymentDate>11/21/2022</paymentDate>
      <natureOfPayment>Equity Compensation</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>02/01/2023</acquiredDate>
      <natureOfAcquisitionTransaction>Restricted Stock Lapse</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>POST HOLDINGS, INC</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>2075</amountOfSecuritiesAcquired>
      <paymentDate>02/01/2023</paymentDate>
      <natureOfPayment>Equity Compensation</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>01/10/2024</acquiredDate>
      <natureOfAcquisitionTransaction>Stock Appreciation Right</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>POST HOLDINGS, INC</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>4494</amountOfSecuritiesAcquired>
      <paymentDate>01/10/2024</paymentDate>
      <natureOfPayment>Equity Compensation</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>06/05/2024</noticeDate>
      <signature>ROBERT E GROTE</signature>
    </noticeSignature>
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144
0001540005
XXXXXXXX
LIVE
0001530950
Post Holdings, Inc.
001-35305
2503 S. HANLEY ROAD
ST. LOUIS
MO
63144
314-644-7600
GROTE ROBERT E
Director
Common
Charles Schwab & Co., Inc.
3000 Schwab Way
Westlake
TX
76262
16845
1761718.00
60585877
06/05/2024
NYSE
Common
01/31/2021
Restricted Stock Lapse
POST HOLDINGS, INC
N
920
01/31/2021
Equity Compensation
Common
08/13/2021
Stock Appreciation Right
POST HOLDINGS, INC
N
4392
08/13/2021
Equity Compensation
Common
02/02/2022
Restricted Stock Lapse
POST HOLDINGS, INC
N
1600
02/02/2022
Equity Compensation
Common
11/21/2022
Stock Appreciation Right
POST HOLDINGS, INC
N
3364
11/21/2022
Equity Compensation
Common
02/01/2023
Restricted Stock Lapse
POST HOLDINGS, INC
N
2075
02/01/2023
Equity Compensation
Common
01/10/2024
Stock Appreciation Right
POST HOLDINGS, INC
N
4494
01/10/2024
Equity Compensation
Y
06/05/2024
ROBERT E GROTE