AMG

• Economic net income (controlling interest) was $221 million, up from $159 million in Q2 2025.
• Record AUM of $942 billion at June 30, 2026, with $13 billion in net client cash flows including $29 billion in alternative net inflows.
• Repurchased $189 million in common stock in Q2 2026, bringing first-half repurchases to $375 million.
• Board declared a quarterly dividend of $0.01 per share, payable August 24, 2026 to shareholders of record August 10, 2026.

2.02 Results of Operations and Financial Condition · 8.01 Other Events · 9.01 Financial Statements and Exhibits

• The facility matures on June 9, 2031, and can be increased by up to $750 million subject to certain conditions.
• Bank of America, N.A. serves as administrative agent, letter of credit issuer, and swingline lender.
• Borrowings may be used for working capital, general corporate purposes, investments in affiliates, debt repayment, stock repurchases, and dividends.
• The agreement includes financial covenants on leverage and interest coverage, plus customary affirmative and negative covenants.

1.01 Entry into a Material Definitive Agreement · 2.03 Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement · 9.01 Financial Statements and Exhibits

• Non-binding advisory vote approved named executive officer compensation with 98% of votes cast in favor.
• Ratification of PricewaterhouseCoopers LLP as independent auditor approved by 94% of votes cast.
• Broker non-votes of 1,444,196 were recorded for director elections and the executive compensation vote.
• Directors will serve until the 2027 annual meeting; report filed May 28, 2026 under Item 5.07.

5.07 Submission of Matters to a Vote of Security Holders

• Economic EPS was $8.23, up 58% year-over-year; Adjusted EBITDA (controlling interest) was $317.3 million, up 39%.
• Record AUM of $882.0 billion at March 31, 2026, with record net client cash flows of $22.5 billion in the quarter.
• Company repurchased approximately $186 million in common stock during Q1 2026.
• Board declared a quarterly dividend of $0.01 per share, payable May 26, 2026 to stockholders of record May 11, 2026.

2.02 Results of Operations and Financial Condition · 8.01 Other Events · 9.01 Financial Statements and Exhibits

• Karen L. Alvingham to retire from board effective April 1, 2026.
• Jay C. Horgen reappointed as President effective April 1, 2026, continuing as CEO.
• Cates will receive customary director compensation and standard indemnification agreement.
• Cates previously served as Vice Chairman of Southeastern Asset Management from 2015 to 2024.

5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements · 7.01 Regulation FD Disclosure · 9.01 Financial Statements and Exhibits

• Thomas M. Wojcik will depart as President and Chief Operating Officer of Affiliated Managers Group, effective March 6, 2026.
• Subject to a separation and release agreement, Wojcik will receive $5,025,000 in cash payments in 2026.
• He may receive an additional $11,050,000 cash payment in Q1 2027 if he fulfills ongoing obligations through early 2027.
• Wojcik will not receive long-term or short-term incentive compensation for 2025 or 2026, and unvested equity awards will be cancelled on the departure date.

5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements

• Full-year 2025 net income (controlling interest) was $716.6 million, up from $511.6 million in 2024.
• Economic EPS for Q4 2025 was $9.48, and for full-year 2025 was $26.05, a 22% increase year-over-year.
• AUM reached $813.3 billion at year-end 2025, with net client cash inflows of approximately $29 billion for the year.
• Board declared a quarterly dividend of $0.01 per share and authorized a new share repurchase program of up to 4.2 million shares.
• The company committed over $1 billion to five new growth investments in 2025, including NorthBridge Partners, Verition Fund Management, Montefiore Investment, and Qualitas Energy.

2.02 Results of Operations and Financial Condition · 8.01 Other Events · 9.01 Financial Statements and Exhibits

• On December 11, 2025, Affiliated Managers Group, Inc. completed the issuance and sale of $425,000,000 aggregate principal amount of 5.500% Senior Notes due 2036.
• The notes are unsecured, unsubordinated obligations and may be redeemed at any time at a make-whole redemption price plus accrued interest.
• Net proceeds will be used to redeem in full and settle obligations on the 5.15% Convertible Trust Preferred Securities due 2037 of AMG Capital Trust II, with remaining proceeds for general corporate purposes.
• The underwriting agreement was entered into on December 8, 2025, with BofA Securities, Inc., Citigroup Global Markets Inc., and Wells Fargo Securities, LLC as representatives.

1.01 Entry into a Material Definitive Agreement · 2.03 Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement · 9.01 Financial Statements and Exhibits