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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2020-09-23</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001655183</rptOwnerCik>
            <rptOwnerName>Mudrick Capital Management, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>527 MADISON AVENUE, 6TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isTenPercentOwner>true</isTenPercentOwner>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001367262</rptOwnerCik>
            <rptOwnerName>Mudrick Jason</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O MUDRICK CAPITAL MANAGEMENT, L.P.</rptOwnerStreet1>
            <rptOwnerStreet2>527 MADISON AVENUE, 6TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
            <isTenPercentOwner>true</isTenPercentOwner>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001813628</rptOwnerCik>
            <rptOwnerName>Mudrick Distressed Opportunity Fund Global, LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>527 MADISON AVENUE, 6TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isTenPercentOwner>true</isTenPercentOwner>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>18428519</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See notes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>3.68</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F4"/>
            </exerciseDate>
            <expirationDate>
                <value>2026-11-10</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>20242</value>
                    <footnoteId id="F4"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See notes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">This Form 3 is filed by the following Reporting Persons: Mudrick Capital Management, L.P. (&quot;MCM&quot;), Jason Mudrick (&quot;Mr. Mudrick&quot;), Mudrick Distressed Opportunity Fund Global, LP and Verto Direct Opportunity II, LP.</footnote>
        <footnote id="F2">Mr. Mudrick is the sole member of Mudrick Capital Management, LLC, which is the general partner of MCM. MCM is the investment manager of the following entities: Mudrick Distressed Opportunity Fund Global, LP; Mudrick Distressed Opportunity Drawdown Fund, LP; Mudrick Distressed Opportunity Drawdown Fund II, LP; Verto Direct Opportunity II, LP; Boston Patriot Batterymarch St LLC; Blackwell Partners LLC Series A; Mercer QIF Fund PLC; Trustees of Grinnell College; and P Mudrick LTD; and Mudrick Distressed Opportunity Specialty Fund, LP. Mr. Mudrick is the managing member of Verto Direct Opportunity GP, LLC, which is the general partner of Verto Direct Opportunity II, LP. Each Reporting Person and each of the aforementioned entities disclaims beneficial ownership of the securities of the Issuer except to the extent of such person's or entity's pecuniary interest therein, if any.</footnote>
        <footnote id="F3">Consists of shares held by the following entities: 1,676,681 by Blackwell Partners LLC Series A; 2,210,447 by Boston Patriot Batterymarch St LLC; 1,038,702 by Mercer QIF Fund PLC; 1,941,111 by Mudrick Distressed Opportunity Drawdown Fund II, LP; 1,933,422 by Mudrick Distressed Opportunity Drawdown Fund, LP; 4,287,799 by Mudrick Distressed Opportunity Fund Global, LP; 453,099 by Mudrick Distressed Opportunity Specialty Fund, LP; 503,709 by P Mudrick LTD; 619,458 by Trustees of Grinnell College; 136,269 by Verto Direct Opportunity GP, LLC; and 3,697,354 by Verto Direct Opportunity II, LP. Excludes 69,532 shares of Common Stock of the Issuer are held by former investors in Verto Direct Opportunity Fund, LP, which were distributed in kind to such investors in 2019 and where such investors have requested that Verto Direct Opportunity GP, LLC sell such shares on their behalf.</footnote>
        <footnote id="F4">Represents stock options granted pursuant to the Issuer's 2016 Stock Incentive Plan, exerciseable and currently held by the following entities: 2,195 by Blackwell Partners LLC Series A; 2,504 by Boston Patriot Batterymarch St LLC; 1,150 by Mudrick Distressed Opportunity Drawdown Fund, LP; 8,836 by Mudrick Distressed Opportunity Fund Global, LP; 762 by Mudrick Distressed Opportunity Specialty Fund, LP; and 4,795 by P Mudrick LTD.</footnote>
    </footnotes>

    <remarks>Exhibit 99.1 (Joint Filer Information) is incorporated herein by reference.</remarks>

    <ownerSignature>
        <signatureName>See Exhibit 99.1 for Signatures</signatureName>
        <signatureDate>2020-09-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
