<SEC-DOCUMENT>0001490281-17-000096.txt : 20170705
<SEC-HEADER>0001490281-17-000096.hdr.sgml : 20170705
<ACCEPTANCE-DATETIME>20170705175528
ACCESSION NUMBER:		0001490281-17-000096
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20170630
FILED AS OF DATE:		20170705
DATE AS OF CHANGE:		20170705

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Groupon, Inc.
		CENTRAL INDEX KEY:			0001490281
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-ADVERTISING AGENCIES [7311]
		IRS NUMBER:				270903295
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		600 WEST CHICAGO AVENUE, SUITE 400
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60654
		BUSINESS PHONE:		(312) 334-1579

	MAIL ADDRESS:	
		STREET 1:		600 WEST CHICAGO AVENUE, SUITE 400
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60654

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Stevens Brian
		CENTRAL INDEX KEY:			0001557559

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35335
		FILM NUMBER:		17949311

	MAIL ADDRESS:	
		STREET 1:		C/O GROUPON, INC.
		STREET 2:		600 WEST CHICAGO AVENUE, SUITE 620
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60654
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_149929169310247.xml
<DESCRIPTION>FORM 4
<TEXT>
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    <periodOfReport>2017-06-30</periodOfReport>

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    <issuer>
        <issuerCik>0001490281</issuerCik>
        <issuerName>Groupon, Inc.</issuerName>
        <issuerTradingSymbol>GRPN</issuerTradingSymbol>
    </issuer>

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            <rptOwnerName>Stevens Brian</rptOwnerName>
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            <rptOwnerStreet1>C/O GROUPON, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>600 WEST CHICAGO AVENUE, SUITE 400</rptOwnerStreet2>
            <rptOwnerCity>CHICAGO</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60654</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>CAO &amp; Treasurer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

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        </nonDerivativeTransaction>
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    <derivativeTable>
        <derivativeTransaction>
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                <value>Restricted Stock Units</value>
            </securityTitle>
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                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
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                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2015-12-31</value>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F3"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>5551.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
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                <sharesOwnedFollowingTransaction>
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                </sharesOwnedFollowingTransaction>
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                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionAmounts>
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                </transactionShares>
                <transactionPricePerShare>
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                    <value>16000</value>
                </sharesOwnedFollowingTransaction>
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                </transactionShares>
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                    <value>D</value>
                </transactionAcquiredDisposedCode>
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            <exerciseDate>
                <value>2016-03-31</value>
                <footnoteId id="F5"/>
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            <expirationDate>
                <footnoteId id="F5"/>
            </expirationDate>
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                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>17735.0</value>
                </underlyingSecurityShares>
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                    <value>35471</value>
                </sharesOwnedFollowingTransaction>
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    <footnotes>
        <footnote id="F1">Shares withheld by the issuer to satisfy the mandatory tax withholding requirement upon vesting of restricted stock units. This is not an open market sale of securities.</footnote>
        <footnote id="F2">Each restricted stock unit represents a contingent right to receive one share of Common Stock.</footnote>
        <footnote id="F3">27,573 of the restricted stock units reported on this line vested on December 31, 2015; 27,170 of the restricted stock units vested quarterly in equal installments during calendar year 2016, beginning on March 31, 2016; and 22,202 of the restricted stock units will vest quarterly in equal installments during calendar year 2017, beginning on March 31, 2017, in each case subject to Mr. Stevens' continued employment with the Company through each vesting date.</footnote>
        <footnote id="F4">The restricted stock units reported on this line will vest quarterly in 5 equal installments, beginning on December 31, 2016, in each case subject to Mr. Stevens' continued employment with the Company through each vesting date.</footnote>
        <footnote id="F5">50,874 of the restricted stock units reported on this line vested in equal installments on the last day of each calendar quarter over a twelve month period beginning on March 31, 2016, and 70,942 of the restricted stock units reported on this line will vest in equal installments on the last day of each calendar quarter over a twelve month period beginning on March 31, 2017, in each case subject to Mr. Stevens' continued employment with the Company through each vesting date.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Erin G. Stone, by Power of Attorney</signatureName>
        <signatureDate>2017-07-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</DOCUMENT>
</SEC-DOCUMENT>
