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

    <schemaVersion>X0609</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2026-07-03</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001981535</issuerCik>
        <issuerName>Sharplink, Inc.</issuerName>
        <issuerTradingSymbol>SBET</issuerTradingSymbol>
        <issuerForeignTradingSymbol></issuerForeignTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001892454</rptOwnerCik>
            <rptOwnerName>Perez Dana Eschenburg</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerNonUSAddressFlag>false</rptOwnerNonUSAddressFlag>
            <rptOwnerStreet1>C/O SHARPLINK, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>200 S. BISCAYNE BOULEVARD</rptOwnerStreet2>
            <rptOwnerCity>MIAMI</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33131</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Accounting Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2026-07-03</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>31388</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>66453</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents shares of the Registrant's common stock underlying restricted stock units (&quot;RSUs&quot;) granted on July 3, 2026 which vest, subject to the reporting person's continuous service, in accordance with the following schedule: (i) one-third (1/3rd) of the RSUs will vest on the first anniversary of June 30, 2026 (the &quot;Vesting Commencement Date&quot;), and (ii) one-twelfth (1/12th) of the RSUs will vest on each of the eight quarterly vesting dates (i.e., September 30, December 30, March 30, and June 30 with respect to any calendar year) that occurs after the first anniversary of the Vesting Commencement Date through and including the third (3rd) anniversary of the Vesting Commencement Date.</footnote>
        <footnote id="F2">Includes: (i) 31,388 newly awarded RSUs, (ii) 35,000 unvested RSUs, and (iii) 65 shares of the Registrant's common stock.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Dana E. Perez</signatureName>
        <signatureDate>2026-07-07</signatureDate>
    </ownerSignature>
</ownershipDocument>
