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

    <schemaVersion>X0609</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-10-06</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001784535</issuerCik>
        <issuerName>Porch Group, Inc.</issuerName>
        <issuerTradingSymbol>PRCH</issuerTradingSymbol>
        <issuerForeignTradingSymbol></issuerForeignTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001515184</rptOwnerCik>
            <rptOwnerName>Ehrlichman Matt</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerNonUSAddressFlag>false</rptOwnerNonUSAddressFlag>
            <rptOwnerStreet1>411 FIRST AVENUE SOUTH</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 501</rptOwnerStreet2>
            <rptOwnerCity>SEATTLE</rptOwnerCity>
            <rptOwnerState>WA</rptOwnerState>
            <rptOwnerZipCode>98104</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>CEO, CHAIRMAN AND FOUNDER</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2026-10-05</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>14946</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>16.8398</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>15957134</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2026-10-06</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F3"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>26135</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>17.35</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>15930999</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2025-10-06</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F4"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>29254</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>17.35</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>15901745</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>6416712</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                    <footnoteId id="F5"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By LLC</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">This sale was required by the Issuer at its election (without any discretion by the Reporting Person), and represents shares sold to cover tax withholding obligations in connection with the vesting and settlement of restricted stock units (&quot;RSUs&quot;) that vested on October 4, 2026 on the semi-annual vesting of the Reporting Person's April 4, 2025 RSU grant. The Issuer has adopted this sell-to-cover method as the sole means for plan participants to satisfy tax withholding obligations in connection with the settlement of awards. The RSUs will continue to vest ratably every 6 months over the remaining 48-month vesting period which commenced on April 4, 2026, subject to the Reporting Person's continuous employment or service with the Issuer.</footnote>
        <footnote id="F2">The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $16.83 to $17.2713 per share. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.</footnote>
        <footnote id="F3">This sale was required by the Issuer at its election (without any discretion by the Reporting Person), and represents shares sold to cover tax withholding obligations in connection with the vesting and settlement of RSUs that vested on October 5, 2026 on the semi-annual vesting of the Reporting Person's April 5, 2024 RSU grant. The Issuer has adopted this sell-to-cover method as the sole means for plan participants to satisfy tax withholding obligations in connection with the settlement of awards. The RSUs will continue to vest ratably every 6 months over the remaining 48-month vesting period which commenced on April 5, 2025, subject to the Reporting Person's continuous employment or service with the Issuer.</footnote>
        <footnote id="F4">This sale was required by the Issuer at its election (without any discretion by the Reporting Person), and represents shares sold to cover tax withholding obligations in connection with the vesting and settlement of RSUs that vested on October 5, 2026 on the semi-annual vesting of the Reporting Person's April 7, 2023 RSU grant. The Issuer has adopted this sell-to-cover method as the sole means for plan participants to satisfy tax withholding obligations in connection with the settlement of awards. The RSUs will continue to vest ratably every 6 months over the remaining 48-month vesting period which commenced on April 5, 2024, subject to the Reporting Person's continuous employment or service with the Issuer.</footnote>
        <footnote id="F5">Issuer common stock held by West Equities, LLC over which the Reporting Person has sole voting and dispositive power.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/Meghan Silver as Attorney-in-fact for Matthew Ehrlichman</signatureName>
        <signatureDate>2026-10-07</signatureDate>
    </ownerSignature>
</ownershipDocument>
