Company: MGRE
Filing Date: 2025-12-11
Form Type: 8-K
Source: 0001193125-25-316053
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Company: AFFILIATED MANAGERS GROUP, INC.
Filing Date: 2025-12-11
Form: 8-K
Item: Item 1.01
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ITEM 1.01      Entry into a Material Definitive Agreement.  

On December 11, 2025, Affiliated Managers Group, Inc. (the “ Company”) completed the issuance and sale of $425,000,000 aggregate principal amount of the Company’s 5.500% Senior Notes due 2036 (the “ Securities”).

The Securities were issued pursuant to a senior notes indenture, dated as of June 5, 2020 (the “ Base Indenture”), as supplemented by the third supplemental indenture thereto, dated as of December 11, 2025 (the “ Third Supplemental Indenture” and, together with the Base Indenture, the “ Indenture”), between the Company and U. S. Bank National Association and U. S. Bank Trust Company, National Association, respectively, in each case as trustee. The Securities have been registered under the Securities Act of 1933, as amended, by a shelf registration statement on Form S-3ASR(RegistrationNo. 333-285434)which became effective February 28, 2025 (the “ Registration Statement”).