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

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2026-02-04</periodOfReport>

    <issuer>
        <issuerCik>0001472787</issuerCik>
        <issuerName>First American Financial Corp</issuerName>
        <issuerTradingSymbol>FAF</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001507625</rptOwnerCik>
            <rptOwnerName>Seaton Mark Edward</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1 FIRST AMERICAN WAY</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SANTA ANA</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92707</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>false</isDirector>
            <isOfficer>true</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
            <officerTitle>Chief Executive Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>false</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2026-02-04</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>17460</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>192671.837</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                    <footnoteId id="F5"/>
                    <footnoteId id="F6"/>
                    <footnoteId id="F7"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Includes 5,380 unvested Restricted Stock Units (&quot;RSUs&quot;) acquired pursuant to an original grant of 18,633 RSUs and shares acquired through automatic dividend reinvestment, vesting in four equal annual increments commencing 2/22/2023, the first anniversary of the grant.</footnote>
        <footnote id="F2">Includes 7,644 unvested RSUs acquired pursuant to an original grant of 20,612 RSUs and shares acquired through automatic dividend reinvestment, vesting in three equal annual increments commencing 2/16/2024, the first anniversary of the grant.</footnote>
        <footnote id="F3">Includes 15,319 unvested RSUs acquired pursuant to an original grant of 21,414 RSUs and shares acquired through automatic dividend reinvestment, vesting in three equal annual increments commencing 2/22/2025, the first anniversary of the grant.</footnote>
        <footnote id="F4">Includes 29,607 unvested RSUs acquired pursuant to an original grant of 28,606 RSUs and shares acquired through automatic dividend reinvestment, vesting in three equal annual increments commencing 2/24/2026, the first anniversary of the grant.</footnote>
        <footnote id="F5">Includes 12,981 unvested RSUs acquired pursuant to an original grant of 12,763 RSUs and shares acquired through automatic dividend reinvestment, vesting in three equal annual increments commencing 6/20/2026, the first anniversary of the grant.</footnote>
        <footnote id="F6">Includes 17,460 unvested RSUs, acquired pursuant to an original grant of 11,467 Performance Stock Units and shares acquired through automatic dividend reinvestment, for which the Compensation Committee of the Board of Directors
certified performance on February 4, 2026, and which will vest on 2/16/2026, the third anniversary of the grant.</footnote>
        <footnote id="F7">Includes 688.551 shares acquired through an automatic dividend reinvestment plan administered by the reporting person's broker since the reporting person's last filing made pursuant to Section 16(a) of the Securities Exchange Act of 1934. Fractional share amounts may vary slightly from prior reports due to rounding.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Stacy S. Rust, Attorney-in-Fact for Mark E. Seaton</signatureName>
        <signatureDate>2026-02-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
