Company: MGRE
Filing Date: 2025-04-11
Form Type: DEF 14A
Source: 0001004434-25-000021
Chunk: 3

Company: AFFILIATED MANAGERS GROUP, INC.
Filing Date: 2025-04-11
Form: DEF 14A
Chunk 3
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 Any stockholder of record as of the record date may attend the Annual Meeting whether or not a proxy has previously been given, but the presence (without further action) of a stockholder at the Annual Meeting will not constitute revocation of a previously given proxy. If you hold your shares in street name and would like to change your voting instructions, please follow the instructions provided to you by your broker, bank, or other intermediary. A stockholder may vote in person at the Annual Meeting upon presenting picture identification and any one of the following: an account statement, the Notice, or a proxy card. If you hold your shares in street name, you will need to obtain a proxy from your bank or broker in order to vote in person, and you must bring a brokerage statement or letter from your broker, bank, or other intermediary reflecting stock ownership, along with picture identification. The address of the Company’s office in Prides Crossing, Massachusetts is set forth above for stockholders who plan to vote in person at the Annual Meeting.

2

PROXY STATEMENT SUMMARY This summary highlights certain information from our Proxy Statement for the 2025 Annual Meeting of Stockholders. You should read the entire Proxy Statement carefully before voting. Certain statements in this Proxy Statement are forward-looking statements. See “Forward-Looking Statements.”

| 2025 Annual Meeting of Stockholders                                                                                           
 Meeting Information                                                                                                           
 May 22, 20259:00 a.m. Eastern Daylight TimeAffiliated Managers Group, Inc.600 Hale StreetPrides Crossing, Massachusetts 01965 | Agenda Items                     
 Proposal 1—Election of Directors | Recommendation  
 FOReach Nominee | Additional Detail 
 Page 12           |
|:------------------------------------------------------------------------------------------------------------------------------|:---------------------------------|:----------------|:------------------|
| Proposal 2—Advisory Vote to Approve ExecutiveCompensation (Say-on-Pay)                                                        | FOR                              | Page 49         |                   |
| Proposal 3—Ratification of the Selection ofIndependent Registered Public Accounting Firm                                      | FOR                              | Page 50         |                   |

| Company Overview |

AMG is a strategic partner to leading independent investment firms globally. Our strategy is to generate long-term value by investing in high-quality independent partner-owned firms, which we refer to as “Affiliates,” through a proven partnership approach, and allocating resources across our unique opportunity set to the areas of highest growth and return. With their entrepreneurial, investment-centric cultures and alignment of interests with clients through direct equity ownership by firm principals, independent firms have