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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3/A</documentType>

    <periodOfReport>2025-02-20</periodOfReport>

    <dateOfOriginalSubmission>2025-01-21</dateOfOriginalSubmission>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001704299</issuerCik>
        <issuerName>TORTOISE SUSTAINABLE &amp; SOCIAL IMPACT TERM FUND</issuerName>
        <issuerTradingSymbol>TEAF</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0002043957</rptOwnerCik>
            <rptOwnerName>Kruske Jeffrey</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>5901 COLLEGE BLVD</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 400</rptOwnerStreet2>
            <rptOwnerCity>OVERLAND PARK</rptOwnerCity>
            <rptOwnerState>KS</rptOwnerState>
            <rptOwnerZipCode>66211</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <officerTitle>Secretary</officerTitle>
            <otherText>Member of investment committee</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <remarks>Mr. Kruske was elected as Secretary of the Company effective as of February 20, 2025</remarks>

    <ownerSignature>
        <signatureName>Jeffrey Kruske</signatureName>
        <signatureDate>2025-02-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
