<SEC-DOCUMENT>0001530950-22-000096.txt : 20220331
<SEC-HEADER>0001530950-22-000096.hdr.sgml : 20220331
<ACCEPTANCE-DATETIME>20220331164546
ACCESSION NUMBER:		0001530950-22-000096
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20220329
FILED AS OF DATE:		20220331
DATE AS OF CHANGE:		20220331

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GRAY DIEDRE J
		CENTRAL INDEX KEY:			0001557413

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35305
		FILM NUMBER:		22793483

	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>
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<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_164875950783049.xml
<DESCRIPTION>FORM 4
<TEXT>
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        <issuerCik>0001530950</issuerCik>
        <issuerName>Post Holdings, Inc.</issuerName>
        <issuerTradingSymbol>POST</issuerTradingSymbol>
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            <rptOwnerName>GRAY DIEDRE J</rptOwnerName>
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            <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>
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            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
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            <otherText></otherText>
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                    <value>14235</value>
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                <value>E</value>
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                    <value>6452</value>
                    <footnoteId id="F7"/>
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                <value>2031-11-16</value>
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                    <value>Common Stock</value>
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                <sharesOwnedFollowingTransaction>
                    <value>19817</value>
                </sharesOwnedFollowingTransaction>
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                <directOrIndirectOwnership>
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    <footnotes>
        <footnote id="F1">In connection with the spin-off of BellRing Brands, Inc. by Post Holdings, Inc. (&quot;Post&quot;), which closed on March 10, 2022 (the &quot;Spin-Off&quot;), performance-based restricted stock units with a total shareholder return performance metric granted in 2019 (the &quot;2019 PRSUs&quot;) and outstanding as of immediately prior to the Spin-Off were converted into time-based restricted stock units, with the number of shares subject to such time-based restricted stock units determined based on Post's achievement of Post's Relative TSR Percentile Rank (as such term is defined in the award agreement for the grant of the 2019 PRSUs (the &quot;Award Agreement&quot;); provided, that the Ending Stock Price (as such term is defined in the Award Agreement) was determined based on the average of the closing sale prices for a share of common stock of the applicable company for the 250 trading days immediately preceding and including March 10, 2022.</footnote>
        <footnote id="F2">The restricted stock units will vest in full on October 15, 2022 (subject to the Reporting Person's continued employment through such date). An adjustment was also made to the number of converted time-based restricted stock units by providing additional Post restricted stock units to the Reporting Person in order to reflect the impact of the Spin-Off.</footnote>
        <footnote id="F3">In connection with the Spin-Off, and in accordance with their terms, adjustments were made to outstanding restricted stock unit awards by providing additional Post restricted stock units to the Reporting Person in order to reflect the impact of the Spin-Off.</footnote>
        <footnote id="F4">In connection with the Spin-Off and in accordance with its terms, adjustments were made to the outstanding stock option award by increasing the number of stock options and reducing the exercise price in order to reflect the impact of the Spin-Off.</footnote>
        <footnote id="F5">Options are fully vested.</footnote>
        <footnote id="F6">Each restricted stock unit represents a contingent right to receive a cash payment based on the greater of the fair market value of Post's common stock on the applicable vesting date or the value on the date of grant without any action on the part of the participant.</footnote>
        <footnote id="F7">Represents an adjustment to the outstanding restricted stock units to reflect the impact of the Spin-Off.</footnote>
        <footnote id="F8">20% of the restricted stock units vested on the date that was six years after the date of grant and an additional 20% of the restricted stock units vest on each annual anniversary thereafter up to the tenth anniversary of the date of grant subject to the Reporting Person's continued employment through such date.</footnote>
        <footnote id="F9">Each restricted stock unit represents a contingent right to receive one share of Post's common stock.  The restricted stock units were granted under the Post Holdings, Inc. 2021 Long-Term Incentive Plan in a transaction exempt under Rule 16b-3 on November 16, 2021.</footnote>
        <footnote id="F10">One-third of the restricted stock units vest on each of the first, second and third anniversaries of the date of grant without any action on the part of the participant.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Diedre J. Gray</signatureName>
        <signatureDate>2022-03-31</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
