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

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2026-01-14</periodOfReport>

    <issuer>
        <issuerCik>0001320760</issuerCik>
        <issuerName>TSS, Inc.</issuerName>
        <issuerTradingSymbol>TSSI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001839522</rptOwnerCik>
            <rptOwnerName>Metzler Richard M.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O TSS, INC.  1800 AVIATION DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2>BUILDING 1, SUITE 100</rptOwnerStreet2>
            <rptOwnerCity>GEORGETOWN</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>78628</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>false</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2026-01-14</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>3784</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>153784</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">These shares of common stock represent restricted stock granted pursuant to an award agreement between Mr. Metzler and the Issuer and are subject to forfeiture. The restricted stock awarded will vest in installments as

follows: (1) 1,261 shares will vest on January 14, 2027, (2) 1,261 shares will vest on January 14, 2028, and (3) 1,262 shares will vest on January 14, 2029.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Christopher R. Johnson, Attorney-in-Fact</signatureName>
        <signatureDate>2026-01-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
