UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of

the Securities Exchange Act of 1934 (Amendment No.            )

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Filed by a Party other than the Registrant ☐

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☐	Preliminary Proxy Statement
☐	Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
☐	Definitive Proxy Statement
☒	Definitive Additional Materials
☐	Soliciting Material under §240.14a-12

AFFILIATED MANAGERS GROUP, INC.

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

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*** Exercise Your Right to Vote ***

Important Notice Regarding the Availability of Proxy Materials for the

Annual Meeting of Stockholders to Be Held on May 29, 2019.

	AFFILIATED MANAGERS GROUP, INC. AFFILIATED MANAGERS GROUP, INC. 777 SOUTH FLAGLER DRIVE WEST PALM BEACH, FL 33401	Meeting Information Meeting Type:                  Annual Meeting For holders as of:             April 2, 2019 Date:  May 29, 2019  Time:  10:00 AM EDT Location:  Affiliated Managers Group, Inc.                   600 Hale Street                   Prides Crossing                   Massachusetts 01965
		You are receiving this communication because you hold shares in the company named herein.
	E62054-P18806	This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see reverse side).
		We encourage you to access and review all of the important information contained in the proxy materials before voting.
	See the reverse side of this notice to obtain proxy materials and voting instructions.

E62053-P18806

	— Before You Vote —
	How to Access the Proxy Materials
	Proxy Materials Available to VIEW or RECEIVE:
	NOTICE AND PROXY STATEMENT            FORM 10-K
	How to View Online:
	Have the information that is printed in the box marked by the arrow (located on the following page) and visit: www.proxyvote.com.
	How to Request and Receive a PAPER or E-MAIL Copy:
	If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request:
	1) BY INTERNET:         www.proxyvote.com
	2) BY TELEPHONE:     1-800-579-1639
	3) BY E-MAIL*:             sendmaterial@proxyvote.com
	E62054-P18806  *   If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow (located on the following page) in the subject line. Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before May 15, 2019 to facilitate timely delivery.
	— How To Vote —
	Please Choose One of the Following Voting Methods
	Vote In Person: Many stockholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. At the meeting, you will need to request a ballot to vote these shares.
	Vote By Internet: To vote now by Internet, go to www.proxyvote.com. Have the information that is printed in the box marked by the arrow (located on the following page) available and follow the instructions.
	Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card.

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Voting Items
The Board of Directors recommends you vote FOR the following:	2.    To approve, by a non-binding advisory vote, the compensation of the Company’s named executive officers.
1.    To elect each of the following ten directors of the Company to serve until the 2020 Annual Meeting of Stockholders and until their respective successors are duly elected and qualified.	3.    To ratify the selection of PricewaterhouseCoopers LLP as the Company’s independent registered public accounting firm for the current fiscal year.
Nominees:	NOTE: Such other business as may properly come before the meeting or any adjournment or postponement thereof.
1a.  Samuel T. Byrne
1b.  Dwight D. Churchill
1c.  Nathaniel Dalton
1d.  Glenn Earle
1e.  Niall Ferguson
1f.  Sean M. Healey
1g.  Tracy P. Palandjian
1h.  Patrick T. Ryan
1i.  Karen L. Yerburgh
1j.  Jide J. Zeitlin

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