AFFILIATED MANAGERS GROUP, INC.

As required by Rule 13a-15 of the Securities and Exchange Act of 1934, as amended (the “Exchange Act”), as of

December 31, 2025, we carried out an evaluation under the supervision and with the participation of our management,

including our Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of our

disclosure controls and procedures. Based upon that evaluation, the Chief Executive Officer and Chief Financial Officer

concluded that, as of the end of the period covered by this report, our disclosure controls and procedures are effective in

ensuring that (i) information required to be disclosed by us in the reports we file or submit under the Exchange Act is recorded,

processed, summarized, and reported within the time periods specified in the SEC’s rules and forms, and (ii) such information

is accumulated and communicated to our management, including our principal executive officer and principal financial officer,

as appropriate, to allow timely decisions regarding required disclosure. In designing and evaluating our disclosure controls and

procedures, we recognize that any controls and procedures, no matter how well designed and operated, can provide only

reasonable assurance of achieving the desired control objectives, and our management necessarily was required to apply its

judgment in evaluating and implementing possible controls and procedures. Our disclosure controls and procedures were

designed to provide reasonable assurance of achieving their stated objectives, and our principal executive officer and principal

financial officer concluded that our disclosure controls and procedures were effective at the reasonable assurance level. We

review on an ongoing basis and document our disclosure controls and procedures, and our internal control over financial

reporting, and we may from time to time make changes in an effort to enhance their effectiveness and ensure that our systems

evolve with our business. See “Management’s Report on Internal Control over Financial Reporting” in Item 8.

Our independent registered public accounting firm, PricewaterhouseCoopers LLP, has issued an audit report on our internal

control over financial reporting, which is included in Item 8.

No change in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange

Act) occurred during the fiscal quarter ended December 31, 2025 that has materially affected, or is reasonably likely to

materially affect, our internal control over financial reporting.