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

    <schemaVersion>X0609</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2026-05-28</periodOfReport>

    <issuer>
        <issuerCik>0001690680</issuerCik>
        <issuerName>NEWMARK GROUP, INC.</issuerName>
        <issuerTradingSymbol>NMRK</issuerTradingSymbol>
        <issuerForeignTradingSymbol></issuerForeignTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0002048880</rptOwnerCik>
            <rptOwnerName>Lutnick Brandon</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerNonUSAddressFlag>false</rptOwnerNonUSAddressFlag>
            <rptOwnerStreet1>499 PARK AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isTenPercentOwner>1</isTenPercentOwner>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Newmark Holdings Exchangeable Limited Partnership Interests</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2026-05-28</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>137831</value>
                    <footnoteId id="F3"/>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F3"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A or Class B Common Stock, par value $0.01 per share</value>
                    <footnoteId id="F2"/>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>127769</value>
                    <footnoteId id="F2"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>20521166</value>
                    <footnoteId id="F4"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F5"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">On May 28, 2026, Cantor Fitzgerald, L.P. (&quot;CFLP&quot;) purchased from Newmark Holdings, L.P. (&quot;Newmark Holdings&quot;) an aggregate of 137,831 exchangeable limited partnership interests in Newmark Holdings (the &quot;Interests&quot;) in a transaction exempt pursuant to Rule 16b-3 under the Securities Exchange Act of 1934, as amended (the &quot;Exchange Act&quot;), in accordance with the Amended and Restated Agreement of Limited Partnership of Newmark Holdings (as amended from time to time, the &quot;Newmark Holdings Agreement&quot;).</footnote>
        <footnote id="F2">The exchange rights with respect to the 137,831 Interests are currently exercisable at any time for an aggregate of 127,769 shares of Newmark Group, Inc. (&quot;Newmark&quot;) Class B common stock, par value $0.01 per share (&quot;Class B Common Stock&quot;) (or, at CFLP's option, an aggregate of 127,769 shares of Newmark Class A common stock, par value $0.01 per share (&quot;Class A Common Stock&quot;)), at the then-current exchange ratio (which is 0.9270 shares per Interest (subject to adjustment) as of May 28, 2026). The shares of Class B Common Stock are convertible at any time on a one-for-one basis (subject to adjustment) into shares of Class A Common Stock.</footnote>
        <footnote id="F3">Includes 134,302 Interests purchased from Newmark Holdings pursuant to Sections 12.02 and 12.03 of the Newmark Holdings Agreement as a result of the redemption of 134,302 non-exchangeable founding partner units for an aggregate consideration of $493,149, and 3,529  Interests purchased from Newmark Holdings pursuant to Section 8.08 of the Newmark Holdings Agreement for an aggregate consideration of $15,060 as a result of the exchange of 3,529 exchangeable founding partner units.</footnote>
        <footnote id="F4">The exchange rights with respect to the 20,521,166 Interests are currently exercisable at any time for an aggregate of 19,023,121 shares of Class B Common Stock (or, at CFLP's option, an aggregate of 19,023,121 shares of Class A Common Stock) at the current exchange ratio (which is 0.9270 shares per Interest (subject to adjustment) as of May 28, 2026).</footnote>
        <footnote id="F5">Consists of Interests held by CFLP. CF Group Management, Inc. (&quot;CFGM&quot;) is the managing general partner of CFLP. Securities held by CFLP are included on this report because the reporting person is the Chairman and Chief Executive Officer of CFLP and CFGM and also the trustee with decision making control of trusts that hold all of the voting shares of CFGM. As a result of his beneficial ownership of CFGM and CFLP, the reporting person may, solely for purposes of Section 16 of the Exchange Act, be deemed a &quot;director by deputization.&quot; The reporting person disclaims beneficial ownership of all securities held by CFLP in excess of his pecuniary interest, if any, and this report shall not be deemed an admission that he is the beneficial owner of, or has pecuniary interest in, any such excess securities for purposes of Section 16 of the Exchange Act, or for any other purpose.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Brandon G. Lutnick, Chairman and Chief Executive Officer</signatureName>
        <signatureDate>2026-06-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
