John R. Erickson - 01 Jan 2023 Form 4 Insider Report for AFFILIATED MANAGERS GROUP, INC. (AMG)

Role: Head of Affiliate Engagement
Signature: /s/ David M. Billings, Attorney-in-Fact
Issuer symbol: AMG
Transactions as of: 01 Jan 2023
Net transactions value: -$296,423
Form type: 4
Filing time: 04 Jan 2023, 16:44:41 UTC
Previous filing: 17 Aug 2022
Next filing: 07 Mar 2023
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	+3,942	+10%	$0.000000	41,985	01 Jan 2023	Direct	F1
transaction	AMG	Common Stock	Tax liability	$296,423	-1,871	-4.5%	$158.43	40,114	01 Jan 2023	Direct	F2

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	-3,942	-25%	$0.000000	11,772	01 Jan 2023	Common Stock	3,942		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.