Jay C. Horgen - Jan 1, 2023 Form 4 Insider Report for AFFILIATED MANAGERS GROUP, INC. (AMG)

Role: President and CEO, Director
Signature: /s/ David M. Billings, Attorney-in-Fact
Stock symbol: AMG
Transactions as of: Jan 1, 2023
Transactions value $: -$577,002
Form type: 4
Date filed: 1/4/2023, 04:50 PM
Previous filing: Aug 17, 2022
Next filing: Mar 7, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AMG	Common Stock	Options Exercise	$0	+8.97K	+4.08%	$0.00	229K	Jan 1, 2023	Direct	F1
transaction	AMG	Common Stock	Tax liability	-$577K	-3.64K	-1.59%	$158.43	225K	Jan 1, 2023	Direct	F2
holding	AMG	Common Stock						20.1K	Jan 1, 2023	By Family Trusts

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	-8.97K	-20.51%	$0.00	34.8K	Jan 1, 2023	Common Stock	8.97K		Direct	F1

* 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 2020-2024.
F2	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.