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

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2026-02-27</periodOfReport>

    <issuer>
        <issuerCik>0001017303</issuerCik>
        <issuerName>TRANSACT TECHNOLOGIES INC</issuerName>
        <issuerTradingSymbol>TACT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001832672</rptOwnerCik>
            <rptOwnerName>Friedman Randall S</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2319 WHITNEY AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>HAMDEN</rptOwnerCity>
            <rptOwnerState>CT</rptOwnerState>
            <rptOwnerZipCode>06518</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>false</aff10b5One>

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    <footnotes>
        <footnote id="F1">Restricted Stock Units issued on February 27, 2025 pursuant to the Company's 2014 Equity Incentive Plan, as Amended and Restated, vesting 25% annually commencing on the first anniversary of the date of grant that have converted to common stock on a one-for-one basis.</footnote>
        <footnote id="F2">Restricted Stock Units issued on February 29, 2024 pursuant to the Company's 2014 Equity Incentive Plan, as Amended and Restated, vesting 25% annually commencing on the first anniversary of the date of grant that have converted to common stock on a one-for-one basis.</footnote>
        <footnote id="F3">Restricted Stock Units issued on March 1, 2023 pursuant to the Company's 2014 Equity Incentive Plan, as Amended and Restated, vesting 25% annually commencing on the first anniversary of the date of grant that have converted to common stock on a one-for-one basis.</footnote>
        <footnote id="F4">Restricted Stock Units issued on March 2, 2022 pursuant to the Company's 2014 Equity Incentive Plan, as Amended and Restated, vesting 25% annually commencing on the first anniversary of the date of grant that have converted to common stock on a one-for-one basis.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/Madison Gallagher, Attorney-in-Fact for Randall S. Friedman</signatureName>
        <signatureDate>2026-03-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
