<SEC-DOCUMENT>0001392972-17-000110.txt : 20170825
<SEC-HEADER>0001392972-17-000110.hdr.sgml : 20170825
<ACCEPTANCE-DATETIME>20170825164605
ACCESSION NUMBER:		0001392972-17-000110
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20170824
FILED AS OF DATE:		20170825
DATE AS OF CHANGE:		20170825

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Woestemeyer Mariette M
		CENTRAL INDEX KEY:			0001404760

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33554
		FILM NUMBER:		171052471

	MAIL ADDRESS:	
		STREET 1:		3100 MAIN STREET
		STREET 2:		SUITE 900
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77002

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PROS Holdings, Inc.
		CENTRAL INDEX KEY:			0001392972
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER PROGRAMMING SERVICES [7371]
		IRS NUMBER:				760168604
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		3100 MAIN STREET
		STREET 2:		SUITE 900
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77002
		BUSINESS PHONE:		713-335-5151

	MAIL ADDRESS:	
		STREET 1:		3100 MAIN STREET
		STREET 2:		SUITE 900
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77002
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_150369394981327.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2017-08-24</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001392972</issuerCik>
        <issuerName>PROS Holdings, Inc.</issuerName>
        <issuerTradingSymbol>PRO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001404760</rptOwnerCik>
            <rptOwnerName>Woestemeyer Mariette M</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>3100 MAIN STREET</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 900</rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77002</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2017-08-24</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>50000</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>25.51</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4107214</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Held jointly with spouse Ronald F. Woestemeyer</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">These shares were issued to Mr. and Mrs. Woestemeyer by PROS Strategic Solutions, Inc., a predecessor-in-interest to PROS Holdings, Inc. In 1999 Mr. and Mrs. Woestemeyer gifted 1,000,000 shares to The Woestemeyer 1999 Gift Trust.</footnote>
        <footnote id="F2">The entire lot of 50,000 shares was sold at this price in one transaction.</footnote>
        <footnote id="F3">Includes: (i) 721,834 shares held by Mr. and Mrs. Woestemeyer; (ii) 950,000 shares held by The Woestemeyer 1999 Gift Trust, of which Deutsche Bank Trust Company Delaware is sole trustee; (iii) 603,548 shares held by Mariette Woestemeyer 2007 Irrevocable Trust (iv) 419,351 shares held by the 2007 ILIT; (v) 690,619 shares held by MAROKA, LLC of which Mr. and Mrs. Woestemeyer are the sole managers; (vi) 800,000 shares held in Mrs. Woestemeyer's 2010 GRAT to Retained Annuity Trust; (vii) 226,522 shares held by Mrs. Woestemeyer's Dynasty Trust; (viii) 236,266 shares held by Mr. Woestemeyer's Dynasty Trust; and (ix) 131,934 shares held by Mr. Woestemeyer's 2007 Irrevocable Trust.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Damian Olthoff, attorney-in-fact for Mariette M. Woestemeyer</signatureName>
        <signatureDate>2017-08-25</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
