<SEC-DOCUMENT>0001530950-22-000405.txt : 20221123
<SEC-HEADER>0001530950-22-000405.hdr.sgml : 20221123
<ACCEPTANCE-DATETIME>20221123103200
ACCESSION NUMBER:		0001530950-22-000405
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20221121
FILED AS OF DATE:		20221123
DATE AS OF CHANGE:		20221123

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GROTE ROBERT E
		CENTRAL INDEX KEY:			0001540005

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35305
		FILM NUMBER:		221413733

	MAIL ADDRESS:	
		STREET 1:		C/O POST HOLDINGS, INC.
		STREET 2:		2503 SOUTH HANLEY ROAD
		CITY:			ST. LOUIS
		STATE:			MO
		ZIP:			63144

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Post Holdings, Inc.
		CENTRAL INDEX KEY:			0001530950
		STANDARD INDUSTRIAL CLASSIFICATION:	GRAIN MILL PRODUCTS [2040]
		IRS NUMBER:				453355106
		STATE OF INCORPORATION:			MO
		FISCAL YEAR END:			0930

	BUSINESS ADDRESS:	
		STREET 1:		2503 S. HANLEY ROAD
		CITY:			ST. LOUIS
		STATE:			MO
		ZIP:			63144
		BUSINESS PHONE:		314-644-7600

	MAIL ADDRESS:	
		STREET 1:		2503 S. HANLEY ROAD
		CITY:			ST. LOUIS
		STATE:			MO
		ZIP:			63144
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>wf-form4a_166921750352248.xml
<DESCRIPTION>FORM 4/A
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2022-11-21</periodOfReport>

    <dateOfOriginalSubmission>2022-11-22</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001530950</issuerCik>
        <issuerName>Post Holdings, Inc.</issuerName>
        <issuerTradingSymbol>POST</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001540005</rptOwnerCik>
            <rptOwnerName>GROTE ROBERT E</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O POST HOLDINGS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>2503 S. HANLEY ROAD</rptOwnerStreet2>
            <rptOwnerCity>ST. LOUIS</rptOwnerCity>
            <rptOwnerState>MO</rptOwnerState>
            <rptOwnerZipCode>63144</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By children's trust</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes></footnotes>

    <remarks>This Form 4/A is being filed to report the Reporting Person's indirect holding which was inadvertently not included in his Form 4 filed on November 22, 2022.</remarks>

    <ownerSignature>
        <signatureName>/s/ Margaret J. Lammert, Attorney-in-Fact</signatureName>
        <signatureDate>2022-11-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
