<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0609</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2026-10-15</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001101215</issuerCik>
        <issuerName>BREAD FINANCIAL HOLDINGS, INC.</issuerName>
        <issuerTradingSymbol>BFH</issuerTradingSymbol>
        <issuerForeignTradingSymbol></issuerForeignTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001321140</rptOwnerCik>
            <rptOwnerName>Gerspach John C</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerNonUSAddressFlag>false</rptOwnerNonUSAddressFlag>
            <rptOwnerStreet1>3095 LOYALTY CIRCLE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>COLUMBUS</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>43219</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2026-10-15</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>704</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>50278</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>6000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Gerspach 2020 GST Exempt Trust</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">The new grant is for 704 shares of common stock represented by restricted stock units, which will vest on October 15, 2027.</footnote>
        <footnote id="F2">The total amount of securities beneficially owned includes: (a) 22,905 unrestricted shares; (b) 5,981 unvested restricted stock units granted 6/22/20; (c) 2,241 unvested restricted stock units granted 6/15/21; (d) 431 unvested restricted stock units granted 9/15/21; (e) 474 unvested restricted stock units granted 12/15/21; (f) 538 unvested restricted stock units granted 3/15/22; (g) 2,650 unvested restricted stock units granted 6/15/22; (h) 934 unvested restricted stock units granted 7/15/22; (i) 969 unvested restricted stock units granted 10/17/22; (j) 912 unvested restricted stock units granted 1/17/23; (k) 1,038 unvested restricted stock units granted 4/17/23; (l) 4,932 unvested restricted stock units granted 6/15/23; (m) 1,186 unvested restricted stock units granted 7/17/23; (n) 1,033 unvested restricted stock units granted 10/16/23;</footnote>
        <footnote id="F3">The shares are held by the Gerspach 2020 GST Exempt Trust, for which the Reporting Person's spouse serves as trustee.</footnote>
    </footnotes>

    <remarks>Footnote 2, continued:  (o) 499 unvested restricted stock units granted 01/15/26; (p) 483 unvested restricted stock units granted 04/15/26; (q) 1,638 unvested restricted stock units granted 06/15/26; (r) 730 unvested restricted stock units granted 07/15/2026; and (s) the new grant for 704 restricted stock units.</remarks>

    <ownerSignature>
        <signatureName>/s/ Benjamin L. Morgan, Attorney in Fact</signatureName>
        <signatureDate>2026-10-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
