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

    <schemaVersion>X0508</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2024-01-05</periodOfReport>

    <dateOfOriginalSubmission>2024-01-09</dateOfOriginalSubmission>

    <issuer>
        <issuerCik>0001556739</issuerCik>
        <issuerName>Thryv Holdings, Inc.</issuerName>
        <issuerTradingSymbol>THRY</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001991647</rptOwnerCik>
            <rptOwnerName>Freeman Grant</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2200 WEST AIRFIELD DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2>PO BOX 619810</rptOwnerStreet2>
            <rptOwnerCity>DFW AIRPORT</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75261</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isOfficer>true</isOfficer>
            <officerTitle>President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>false</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2024-01-05</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>3188</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>19.63</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>54829</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents shares of common stock withheld by the Issuer to satisfy tax withholding obligations of the Reporting Person in connection with the vesting of a portion of restricted stock units previously granted to the Reporting Person.</footnote>
        <footnote id="F2">This Form 4/A amends the original Form 4 filed on January 9, 2024, which inadvertently disclosed that 4,213 additional shares were withheld for tax obligations of the Reporting Person. This Form 4/A is also deemed to adjust, accordingly and in connection with the Form 3/A also filed as of the date hereof, the reported balance on the Form 4 filed by the Reporting Person on March 5, 2024. In this regard, as of January 1, 2025, the Reporting Person directly held 100,390 shares, including 1,228 shares purchased through the 2021 Employee Stock Purchase Plan.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Meredith Kennedy, Attorney-in-Fact</signatureName>
        <signatureDate>2025-01-07</signatureDate>
    </ownerSignature>
</ownershipDocument>
