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      <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>HARSHMAN ELLEN F</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Former Director</relationshipToIssuer>
      </relationshipsToIssuer>
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    <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>700</noOfUnitsSold>
      <aggregateMarketValue>80856.00</aggregateMarketValue>
      <noOfUnitsOutstanding>56481848</noOfUnitsOutstanding>
      <approxSaleDate>03/28/2025</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>01/30/2025</acquiredDate>
      <natureOfAcquisitionTransaction>Restricted Stock Lapse</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>POST HOLDINGS, INC.</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>700</amountOfSecuritiesAcquired>
      <paymentDate>01/30/2025</paymentDate>
      <natureOfPayment>Equity Compensation</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>ELLEN F HARSHMAN</name>
        <address>
          <com:street1>2503 S. HANLEY ROAD</com:street1>
          <com:city>ST. LOUIS</com:city>
          <com:stateOrCountry>MO</com:stateOrCountry>
          <com:zipCode>63144</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Post Holdings, Inc.</securitiesClassTitle>
      <saleDate>02/13/2025</saleDate>
      <amountOfSecuritiesSold>400</amountOfSecuritiesSold>
      <grossProceeds>44854.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>03/28/2025</noticeDate>
      <signature>ELLEN F HARSHMAN</signature>
    </noticeSignature>
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144
0001718508
XXXXXXXX
LIVE
0001530950
Post Holdings, Inc.
001-35305
2503 S. HANLEY ROAD
ST. LOUIS
MO
63144
314-644-7600
HARSHMAN ELLEN F
Former Director
Common
Charles Schwab & Co., Inc.
3000 Schwab Way,
Westlake,
TX
76262
700
80856.00
56481848
03/28/2025
NYSE
Common
01/30/2025
Restricted Stock Lapse
POST HOLDINGS, INC.
N
700
01/30/2025
Equity Compensation
N
ELLEN F HARSHMAN
2503 S. HANLEY ROAD
ST. LOUIS
MO
63144
Post Holdings, Inc.
02/13/2025
400
44854.00
03/28/2025
ELLEN F HARSHMAN