<SEC-DOCUMENT>0001127602-25-008757.txt : 20250307
<SEC-HEADER>0001127602-25-008757.hdr.sgml : 20250307
<ACCEPTANCE-DATETIME>20250307171539
ACCESSION NUMBER:		0001127602-25-008757
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20250305
FILED AS OF DATE:		20250307
DATE AS OF CHANGE:		20250307

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Horgen Jay C.
		CENTRAL INDEX KEY:			0001432993
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13459
		FILM NUMBER:		25721232

	MAIL ADDRESS:	
		STREET 1:		AFFILIATED MANAGERS GROUP, INC.
		STREET 2:		777 S. FLAGLER DR., SUITE 1201 E. TOWER
		CITY:			WEST PALM BEACH
		STATE:			FL
		ZIP:			33401

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AFFILIATED MANAGERS GROUP, INC.
		CENTRAL INDEX KEY:			0001004434
		STANDARD INDUSTRIAL CLASSIFICATION:	INVESTMENT ADVICE [6282]
		ORGANIZATION NAME:           	02 Finance
		IRS NUMBER:				043218510
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		777 SOUTH FLAGLER DRIVE
		STREET 2:		SUITE 1401 EAST TOWER
		CITY:			WEST PALM BEACH
		STATE:			FL
		ZIP:			33401
		BUSINESS PHONE:		(800) 345-1100

	MAIL ADDRESS:	
		STREET 1:		777 SOUTH FLAGLER DRIVE
		STREET 2:		SUITE 1401 EAST TOWER
		CITY:			WEST PALM BEACH
		STATE:			FL
		ZIP:			33401

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AFFILIATED MANAGERS GROUP INC
		DATE OF NAME CHANGE:	19970822
</SEC-HEADER>
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    <periodOfReport>2025-03-05</periodOfReport>

    <issuer>
        <issuerCik>0001004434</issuerCik>
        <issuerName>AFFILIATED MANAGERS GROUP, INC.</issuerName>
        <issuerTradingSymbol>AMG</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001432993</rptOwnerCik>
            <rptOwnerName>Horgen Jay C.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O AFFILIATED MANAGERS GROUP, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>777 SOUTH FLAGLER DRIVE</rptOwnerStreet2>
            <rptOwnerCity>WEST PALM BEACH</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33401</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <officerTitle>President and CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

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                <value>Common Stock</value>
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                <equitySwapInvolved>0</equitySwapInvolved>
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                <sharesOwnedFollowingTransaction>
                    <value>419439</value>
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                    <value>D</value>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
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                <natureOfOwnership>
                    <value>By Family Trusts</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
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    <derivativeTable>
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                <underlyingSecurityTitle>
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                    <value>D</value>
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        </derivativeTransaction>
        <derivativeTransaction>
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                    <value>D</value>
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        </derivativeTransaction>
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    <footnotes>
        <footnote id="F1">Reflects the vesting of previously reported awards. Awards vest 2022-2028.</footnote>
        <footnote id="F2">Award granted in March 2022, which settled following the achievement of performance conditions previously described in the Company's annual meeting proxy statements.</footnote>
        <footnote id="F3">Reflects the automatic surrender of shares of common stock to the Company to satisfy tax withholding obligations related to the vesting of the awards described above.</footnote>
        <footnote id="F4">The award, issued under the Company's 2020 Equity Incentive Plan, vests in four equal installments on each of March 5, 2026, 2027, 2028, and 2029.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Kavita Padiyar, Attorney-in-Fact</signatureName>
        <signatureDate>2025-03-07</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
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</SEC-DOCUMENT>
