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

    <schemaVersion>X0609</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2026-04-14</periodOfReport>

    <issuer>
        <issuerCik>0001631596</issuerCik>
        <issuerName>KKR Real Estate Finance Trust Inc.</issuerName>
        <issuerTradingSymbol>KREF</issuerTradingSymbol>
        <issuerForeignTradingSymbol></issuerForeignTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001328582</rptOwnerCik>
            <rptOwnerName>Langer Jonathan A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerNonUSAddressFlag>false</rptOwnerNonUSAddressFlag>
            <rptOwnerStreet1>C/O KKR REAL ESTATE FINANCE TRUST INC.</rptOwnerStreet1>
            <rptOwnerStreet2>30 HUDSON YARDS, SUITE 7500</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10001</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>false</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2026-04-14</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>16691</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>73513</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents a grant of restricted stock units, which will vest on the earlier of (i) April 14, 2027 and (ii) the first regularly scheduled annual meeting of the stockholders of the Issuer following the grant date (the &quot;RSU Vesting Date&quot;). The reporting person has elected to defer receipt of all of the shares of Common Stock issuable upon the vesting of the restricted stock units until the earlier of (a) ten years after the RSU Vesting Date and (b) such date in which the reporting person no longer serves as a member of the Board of Directors of the Issuer. Upon such date, the reporting person has elected to receive the Common Stock in four equal annual installments.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Patrick Mattson, as Attorney-in-Fact</signatureName>
        <signatureDate>2026-04-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
