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

    <schemaVersion>X0609</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2026-06-03</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0000355019</issuerCik>
        <issuerName>FONAR CORP</issuerName>
        <issuerTradingSymbol>FONR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001949366</rptOwnerCik>
            <rptOwnerName>Damadian Timothy Raymond</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerNonUSAddressFlag>false</rptOwnerNonUSAddressFlag>
            <rptOwnerStreet1>110 MARCUS DR.</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MELVILLE</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>11747</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President/CEO/Treasurer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>FONAR CORPORATION COMMON STOCK</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>79059</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <remarks>On June 3, 2026, certain parties entered into an agreement and plan of merger dated December 23, 2025, by and among Issuer, FONAR, LLC, as Parent and FONAR Acquisition Sub, Inc., as Merger Sub, completed the transactions contemplated thereby, pursuant to which Merger Sub merged with and into Issuer, with Issuer surviving the merger as a wholly owned subsidiary of Parent.  At the effective time, each share of the Issuer's common stock, par value $0.0001 per share, outstanding immediately prior to the effective time was cancelled and converted into the right to receive cash in an equal amount equal to $19.00 per share (other than shares owned by Parent, the Company or any of their respective subsidiaries, including securities held as treasury shares, collectively, the Excluded Shares.  As of the effective time, the Excluded Shares were cancelled and extinguishes without any conversion thereof or consideration paid therefore.  As a result of the merger, the reporting person is no longer subject to the reporting requirements of Section 16(a) of the Securities Exchange Act of 1934, as amended.</remarks>

    <ownerSignature>
        <signatureName>/s/ Timothy Raymond Damadian</signatureName>
        <signatureDate>2026-06-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
