Thomas M. Wojcik - 05 Mar 2025 Form 4 Insider Report for AFFILIATED MANAGERS GROUP, INC. (AMG)

Role: Chief Operating Officer
Signature: /s/ Kavita Padiyar, Attorney-in-Fact
Issuer symbol: AMG
Transactions as of: 05 Mar 2025
Net transactions value: -$2,356,538
Form type: 4
Filing time: 07 Mar 2025, 17:10:05 UTC
Previous filing: 08 Oct 2024
Next filing: 09 Sep 2025
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AMG	Common Stock	Options Exercise	$0	+7,287	+6.9%	$0.000000	113,080	05 Mar 2025	Direct	F1
transaction	AMG	Common Stock	Award	$0	+20,555	+18%	$0.000000	133,635	05 Mar 2025	Direct	F2
transaction	AMG	Common Stock	Tax liability	$2,356,538	-14,220	-11%	$165.72	119,415	05 Mar 2025	Direct	F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	AMG	Stock Units	Options Exercise	$0	-7,287	-40%	$0.000000	10,918	05 Mar 2025	Common Stock	7,287		Direct	F1
transaction	AMG	Stock Units	Award	$0	+5,900		$0.000000	5,900	05 Mar 2025	Common Stock	5,900		Direct	F4

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Reflects the vesting of previously reported awards. Awards vest 2022-2028.
F2	Award granted in March 2022, which settled following the achievement of performance conditions previously described in the Company's annual meeting proxy statements.
F3	Reflects the automatic surrender of shares of common stock to the Company to satisfy tax withholding obligations related to the vesting of the awards described above.
F4	The award, issued under the Company's 2020 Equity Incentive Plan, vests in four equal installments on each of March 5, 2026, 2027, 2028, and 2029.