<SEC-DOCUMENT>0001371285-20-000173.txt : 20200722
<SEC-HEADER>0001371285-20-000173.hdr.sgml : 20200722
<ACCEPTANCE-DATETIME>20200722183835
ACCESSION NUMBER:		0001371285-20-000173
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20200720
FILED AS OF DATE:		20200722
DATE AS OF CHANGE:		20200722

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Friedman Gavin
		CENTRAL INDEX KEY:			0001800776

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36537
		FILM NUMBER:		201042350

	MAIL ADDRESS:	
		STREET 1:		6100 4TH AVENUE
		STREET 2:		SUITE 200
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98108

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TRUPANION, INC.
		CENTRAL INDEX KEY:			0001371285
		STANDARD INDUSTRIAL CLASSIFICATION:	HOSPITAL & MEDICAL SERVICE PLANS [6324]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		6100 4TH AVENUE SOUTH
		STREET 2:		SUITE 200
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98108
		BUSINESS PHONE:		888-733-2685

	MAIL ADDRESS:	
		STREET 1:		6100 4TH AVENUE SOUTH
		STREET 2:		SUITE 200
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98108

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	TRUPANION INC.
		DATE OF NAME CHANGE:	20131114

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	VETINSURANCE INTERNATIONAL INC
		DATE OF NAME CHANGE:	20060802
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_159545749874405.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2020-07-20</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001371285</issuerCik>
        <issuerName>TRUPANION, INC.</issuerName>
        <issuerTradingSymbol>TRUP</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001800776</rptOwnerCik>
            <rptOwnerName>Friedman Gavin</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>6100 4TH AVENUE S</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 200</rptOwnerStreet2>
            <rptOwnerCity>SEATTLE</rptOwnerCity>
            <rptOwnerState>WA</rptOwnerState>
            <rptOwnerZipCode>98108</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief People Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2020-07-20</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>300</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>49.52</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2011</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">The sale reported was effected pursuant to a Rule 10b5-1 trading plan adopted by reporting person on February 18, 2020, in order to implement a plan of financial diversification. Accordingly, the reporting person had no discretion with regard to the timing of the transaction.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Charlotte Sim-Warner as attorney-in-fact for Gavin Friedman</signatureName>
        <signatureDate>2020-07-20</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
