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

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-09-12</periodOfReport>

    <notSubjectToSection16>true</notSubjectToSection16>

    <issuer>
        <issuerCik>0001431695</issuerCik>
        <issuerName>Olo Inc.</issuerName>
        <issuerTradingSymbol>OLO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001917798</rptOwnerCik>
            <rptOwnerName>Cancel David</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O OLO INC. 285 FULTON STREET,</rptOwnerStreet1>
            <rptOwnerStreet2>ONE WORLD TRADE CENTER, 82ND FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10007</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>false</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2025-09-12</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>102638</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">This Form 4 reports securities disposed of pursuant to the Agreement and Plan of Merger (the &quot;Merger Agreement&quot;), dated July 3, 2025, by and among the Issuer, Olo Parent, Inc. (f/k/a Project Hospitality Parent, LLC), a Delaware corporation (&quot;Parent&quot;) and Project Hospitality Merger Sub, Inc., a Delaware corporation and a wholly-owned subsidiary of Parent (&quot;Merger Sub&quot;). On September 12, 2025 (the &quot;Effective Time&quot;), Merger Sub merged with and into the Issuer, with the Issuer surviving the merger as a wholly-owned subsidiary of Parent.</footnote>
        <footnote id="F2">Pursuant to the terms of the Merger Agreement, at the Effective Time, each outstanding share of Issuer Common Stock was cancelled and automatically converted into the right to receive $10.25 in cash, without interest, less any applicable withholding taxes.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Jennifer C. Wong, Attorney-in-Fact</signatureName>
        <signatureDate>2025-09-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
