Company: MGRE
Filing Date: 2025-02-28
Form Type: S-3ASR
Source: 0001193125-25-042543
Chunk: 6

Company: AFFILIATED MANAGERS GROUP, INC.
Filing Date: 2025-02-28
Form: S-3ASR
Chunk 6
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, we enhance these advantages to magnify the long-term success of our Affiliates and actively support their independence. Our innovative model enables each Affiliate’s management team to retain autonomy
and significant equity ownership in their firm, while they leverage our strategic capabilities and insight, including growth capital, product strategy and development, capital formation, and incentive alignment and succession planning. As of
December 31, 2024, our aggregate assets under management were approximately $708 billion across a diverse range of private markets, liquid alternatives, and differentiated long-only investment strategies.

5

USE OF PROCEEDS

Unless otherwise specified in connection with a particular offering of securities, the net proceeds from the sale of the securities offered by
this prospectus will be used for general corporate purposes.

6

DESCRIPTION OF THE DEBT SECURITIES

We may offer debt securities, which may be senior debt securities or junior subordinated debt securities and may be convertible or non-convertible. We will issue debt securities offered by this prospectus and any accompanying prospectus supplement under an indenture to be entered into between us and the trustee identified in the applicable
prospectus supplement. The terms of the senior debt securities will include those described in the applicable prospectus supplement and those stated in the senior debt securities indenture, dated as of June 5, 2020 (the “Senior Notes
Indenture”), between the Company, as issuer, and U.S. Bank Trust Company, National Association (successor to U.S. Bank National Association), as trustee, and those made part of the Senior Notes Indenture by reference to the Trust Indenture Act
of 1939, as amended (the “Trust Indenture Act”). The terms of the junior subordinated debt securities will include those described in the applicable prospectus supplement and those stated in the junior subordinated debt securities
indenture, dated as of March 27, 2019 (the “Junior Subordinated Notes Indenture”), by and between the Company, as issuer, and U.S. Bank Trust Company, National Association (successor to U.S. Bank National Association), as trustee, and
those made part of the Junior Subordinated Notes Indenture by reference to the Trust Indenture Act. We have included copies of the Senior Notes Indenture and the Junior Subordinated Notes Indenture as exhibits to this Registration Statement. Each of
the indentures is subject to, and governed by, the terms of the Trust Indenture Act. We have junior