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

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2026-01-12</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001468492</issuerCik>
        <issuerName>HeartSciences Inc.</issuerName>
        <issuerTradingSymbol>HSCS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001480371</rptOwnerCik>
            <rptOwnerName>Wells David R.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O HEARTSCIENCES INC.,</rptOwnerStreet1>
            <rptOwnerStreet2>550 RESERVE STREET, SUITE 360</rptOwnerStreet2>
            <rptOwnerCity>SOUTHLAKE</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>76092</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2026-01-12</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>15000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
                <footnoteId id="F3"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>15000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>15000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Represents Restricted Stock Units (the &quot;RSUs&quot;) granted to the Reporting Person under the Issuer's 2023 Equity Incentive Plan (as amended, the &quot;Plan&quot;) pursuant to the approval of the Issuer's board of directors. Each vested RSU shall be settled by delivery to the Reporting Person of one share of the Issuer's common stock, $0.001 par value per share, upon satisfaction of the Conditions (as defined below).</footnote>
        <footnote id="F2">The RSUs shall vest subject to the satisfaction of all of the following conditions (the &quot;Conditions&quot;): (i) approval by the Issuer's shareholders of any amendment or modification to or restatement of the Plan, which, among other things, contemplates the award of the RSUs; and (ii) (x) 1/2 of the RSUs shall vest on the one-year anniversary of the grant date (the &quot;Initial Vesting Date&quot;) and (y) thereafter, 1/8th of the RSUs shall vest on each subsequent quarterly anniversary of the Initial Vesting Date (each an &quot;Additional Initial Vesting Date&quot; and together with the Initial Vesting Date, the &quot;Vesting Dates&quot;), such that all of the RSUs shall fully vest on the two-year anniversary of the grant date in each case provided that the Reporting Person is continuously serving on the Board through each applicable Vesting Date.</footnote>
        <footnote id="F3">100% of the RSUs shall vest (i) in the event of a Change of Control (as defined in the Plan) or (ii) if the Issuer achieves $250,000 or more of revenue in any fiscal quarter ending after the date hereof.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ David R. Wells</signatureName>
        <signatureDate>2026-01-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
