<SEC-DOCUMENT>0001698530-19-000061.txt : 20190614
<SEC-HEADER>0001698530-19-000061.hdr.sgml : 20190614
<ACCEPTANCE-DATETIME>20190614173406
ACCESSION NUMBER:		0001698530-19-000061
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20190614
FILED AS OF DATE:		20190614
DATE AS OF CHANGE:		20190614

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Thaxton Colby Shad
		CENTRAL INDEX KEY:			0001697945

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-55764
		FILM NUMBER:		19899897

	MAIL ADDRESS:	
		STREET 1:		8045 LAMON AVENUE, SUITE 410
		CITY:			SKOKIE
		STATE:			IL
		ZIP:			60077

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			EXICURE, INC.
		CENTRAL INDEX KEY:			0001698530
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				815333008
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		8045 LAMON AVE, SUITE 410
		CITY:			SKOKIE
		STATE:			IL
		ZIP:			60077
		BUSINESS PHONE:		847-673-1700

	MAIL ADDRESS:	
		STREET 1:		8045 LAMON AVE, SUITE 410
		CITY:			SKOKIE
		STATE:			IL
		ZIP:			60077

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Max-1 Acquisition Corp
		DATE OF NAME CHANGE:	20170221
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_156054802997708.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2019-06-14</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001698530</issuerCik>
        <issuerName>EXICURE, INC.</issuerName>
        <issuerTradingSymbol>XCUR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001697945</rptOwnerCik>
            <rptOwnerName>Thaxton Colby Shad</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O EXICURE, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>8045 LAMON AVENUE, SUITE 410</rptOwnerStreet2>
            <rptOwnerCity>SKOKIE</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60077</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>2.78</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2019-06-14</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>21693</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2029-06-13</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>21693.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>21693</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">This option vests in 12 substantially equal monthly installments from June 14, 2019,  provided that the option will vest in full on the Issuer's next regularly scheduled annual meeting of stockholders that occurs following the Grant Date, subject to the Reporting Person's continued service with the Issuer through each such date or, if earlier, such annual meeting and certain change of control provisions.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ David Snyder, attorney-in-fact</signatureName>
        <signatureDate>2019-06-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
