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

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-12-22</periodOfReport>

    <issuer>
        <issuerCik>0001455863</issuerCik>
        <issuerName>AMERICOLD REALTY TRUST</issuerName>
        <issuerTradingSymbol>COLD</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001455863</rptOwnerCik>
            <rptOwnerName>AMERICOLD REALTY TRUST</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O AMERICOLD REALTY TRUST</rptOwnerStreet1>
            <rptOwnerStreet2>10 GLENLAKE PKWY, SUITE 600</rptOwnerStreet2>
            <rptOwnerCity>ATLANTA</rptOwnerCity>
            <rptOwnerState>GA</rptOwnerState>
            <rptOwnerZipCode>30328</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
            <isOfficer>false</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>false</aff10b5One>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Operating Partnership Profits Units</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2025-12-22</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>6063</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>6063</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>6063</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Represents OP Profits Units (&quot;OP Profits Units&quot;) of Americold Realty Operating Partnership, L.P. (&quot;Operating Partnership&quot;), which vest on the earlier of May 20, 2025, or the date of the next annual meeting of Americold Realty Trust, Inc. stockholders following the grant date. The OP Profits Units were issued to the reporting person pursuant to the Americold Realty Trust 2017 Equity Incentive Plan.</footnote>
        <footnote id="F2">Conditioned upon minimum allocations to the capital accounts of the OP Profits Units for federal income tax purposes, each vested OP Profits Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Operating Partnership (a &quot;Common Unit&quot;). Each Common Unit acquired upon conversion of a vested OP Profits Unit may, at the election of the holder, be presented for redemption for cash equal to the then fair market value of a share of Americold Realty Trust, Inc. (the &quot;Company&quot;) common stock (the &quot;Common Stock&quot;), except that the Company may, at its election, acquire each Common Unit so presented for one share of Common Stock. The rights to convert vested OP Profits Units into Common Units and redeem Common Units have no expiration dates.</footnote>
    </footnotes>

    <remarks>This holding statement has been made for Stephen R. Sleigh using the Issuer's CIK codes in order to satisfy Form 4 filing requirements. An amendment will be filed for Mr. Sleigh upon receipt of his CIK filer codes from the SEC.</remarks>

    <ownerSignature>
        <signatureName>/s/ Nathan H. Harwell, Attorney-in-fact</signatureName>
        <signatureDate>2025-12-29</signatureDate>
    </ownerSignature>
</ownershipDocument>
