Rodriguez Felix Matos V - 05 Mar 2026 Form 4 Insider Report for AFFILIATED MANAGERS GROUP, INC. (AMG)

Role: Director
Signature: /s/ Kavita Padiyar, Attorney-in-Fact
Issuer symbol: AMG
Transactions as of: 05 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 09 Mar 2026, 17:27:15 UTC
Previous filing: 18 Aug 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Matos Rodriguez Felix V.	Director	C/O AFFILIATED MANAGERS GROUP, INC., 777 SOUTH FLAGLER DRIVE, WEST PALM BEACH	/s/ Kavita Padiyar, Attorney-in-Fact	09 Mar 2026	0001838275

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AMG	Common Stock	Options Exercise		+867	+19%	$0.000000^*	5,369	05 Mar 2026	Direct	F1

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		-867	-43%	$0.000000^*	1,172	05 Mar 2026	Common Stock	867		Direct	F1
transaction	AMG	Stock Units	Award		+335		$0.000000^*	335	05 Mar 2026	Common Stock	335		Direct	F2

* 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 2023-2027.
F2	Each stock unit represents a right to receive one share of the Company's common stock upon vesting. The stock units vest in full on March 5, 2027.