<SEC-DOCUMENT>0001392972-20-000018.txt : 20200115
<SEC-HEADER>0001392972-20-000018.hdr.sgml : 20200115
<ACCEPTANCE-DATETIME>20200115202634
ACCESSION NUMBER:		0001392972-20-000018
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20200113
FILED AS OF DATE:		20200115
DATE AS OF CHANGE:		20200115

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Dziersk Thomas
		CENTRAL INDEX KEY:			0001371064

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33554
		FILM NUMBER:		20529294

	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_157913797710001.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2020-01-13</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001371064</rptOwnerCik>
            <rptOwnerName>Dziersk Thomas</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>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP, Worldwide Sales</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2020-01-13</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>12600</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>12600.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>76029</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Each restricted stock unit represents the contingent right to receive one share of PROS Holdings, Inc. common stock.</footnote>
        <footnote id="F2">These restricted stock units were granted on January 13, 2020 in the amount of 12,600 units, and vest annually in equal installments for four years with a final lapse date of January 13, 2024.</footnote>
        <footnote id="F3">Includes: (i) 29,752 unvested restricted stock units, which vest in equal installments on October 9 each year, with a final lapse date of October 9, 2021, associated with an October 9, 2017 grant;(ii) 4,630 unvested restricted stock units, which vest in equal installments on January 10 for the next two years, with a final lapse date of January 10, 2022, associated with a January 8, 2018 grant; (iii) 29,047 unvested restricted stock units, which vest in equal installments on January 15 for the next four years, with a final lapse date of January 15, 2023, associated with a January 15, 2019 grant; and (iv) 12,600 unvested restricted stock units, which vest in equal installments on January 13 for the next four years, with a final lapse date of January 13, 2024.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Damian W. Olthoff, attorney-in-fact for Thomas Dziersk</signatureName>
        <signatureDate>2020-01-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
