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

    <schemaVersion>X0609</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2026-06-17</periodOfReport>

    <dateOfOriginalSubmission>2026-06-22</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001569187</issuerCik>
        <issuerName>AH Realty Trust, Inc.</issuerName>
        <issuerTradingSymbol>AHRT</issuerTradingSymbol>
        <issuerForeignTradingSymbol></issuerForeignTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001042733</rptOwnerCik>
            <rptOwnerName>BIGMAN THEODORE</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerNonUSAddressFlag>false</rptOwnerNonUSAddressFlag>
            <rptOwnerStreet1>C/O AH REALTY TRUST, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>4605 COLUMBUS STREET</rptOwnerStreet2>
            <rptOwnerCity>VIRGINIA BEACH</rptOwnerCity>
            <rptOwnerState>VA</rptOwnerState>
            <rptOwnerZipCode>23462</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>80000</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Time-Based LTIP Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
                <footnoteId id="F3"/>
            </conversionOrExercisePrice>
            <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>11695</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>11695</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">This Form 4/A amends the Form 4 originally filed on June 22, 2026. The amendment is being filed solely to include 80,000 shares of Common Stock, which were inadvertently omitted from the original filing. No other changes have been made to information previously reported.</footnote>
        <footnote id="F2">Represents Time-Based LTIP Units (&quot;Time-Based LTIP Units&quot;) in AH Realty Trust, L.P. (the &quot;Operating Partnership&quot;), the operating partnership of AH Realty Trust, Inc. (the &quot;Company&quot;). Under the limited partnership agreement of the Partnership (the &quot;OP Agreement&quot;) and subject to conditions set forth in the OP Agreement, upon vesting of LTIP Units, LTIP Units are convertible into Class A common units of limited partnership interest (&quot;Common Units&quot;) in the Partnership at the holder's option. Under the award agreement pursuant to which the Time-Based LTIP Units were granted to the reporting person, except in connection with a Change of Control (as defined in the OP Agreement), the Time-Based LTIP Units may not be converted to Common Units until two years following the date of grant. Time-Based LTIP Units have no expiration date.</footnote>
        <footnote id="F3">Each Common Unit is redeemable for cash equal to the then-current market value of one share of the Company's common stock, or at the election of the Company, one share of the Company's common stock. Common Units have no expiration date.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Matthew T. Barnes-Smith, as Attorney-in-Fact for Theodore R. Bigman</signatureName>
        <signatureDate>2026-06-22</signatureDate>
    </ownerSignature>
</ownershipDocument>
