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

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-11-04</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001641631</issuerCik>
        <issuerName>Beyond Air, Inc.</issuerName>
        <issuerTradingSymbol>XAIR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0002075668</rptOwnerCik>
            <rptOwnerName>Goodman Robert Scott</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BEYOND AIR, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>900 STEWART AVENUE, SUITE 301</rptOwnerStreet2>
            <rptOwnerCity>GARDEN CITY</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>11530</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>

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            </securityTitle>
            <conversionOrExercisePrice>
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            </conversionOrExercisePrice>
            <transactionDate>
                <value>2025-11-04</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
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                <footnoteId id="F1"/>
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            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>187</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
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                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
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                </underlyingSecurityShares>
            </underlyingSecurity>
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                </directOrIndirectOwnership>
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            <securityTitle>
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            </securityTitle>
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                <value>2025-11-04</value>
            </transactionDate>
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            <expirationDate>
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                </underlyingSecurityTitle>
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            </underlyingSecurity>
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        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Options (Right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>1.95</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2025-11-04</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
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                <footnoteId id="F1"/>
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                <transactionPricePerShare>
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            <expirationDate>
                <footnoteId id="F2"/>
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                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>187</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
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                </sharesOwnedFollowingTransaction>
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                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">On November 4, 2025, the Issuer's Board of Directors approved an option repricing, effective as of November 4, 2025, reducing the exercise price to $1.95 per share, the closing price of the Issuer's common stock on November 3, 2025. All of the other terms of the options remain unchanged.</footnote>
        <footnote id="F2">This stock option award was issued pursuant to the Company's Amended and Restated 2013 Equity Incentive Plan, as amended, (the &quot;|2013 Plan&quot;) and becomes exercisable in accordance with the vesting schedule specified in the award agreement and as previously reported on applicable Form-4, subject to the Reporting Person's continued service with the Issuer as of the applicable vesting date.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Goodman Robert Scott</signatureName>
        <signatureDate>2025-11-06</signatureDate>
    </ownerSignature>
</ownershipDocument>
