Loren M. Starr - Aug 14, 2025 Form 4 Insider Report for AFFILIATED MANAGERS GROUP, INC. (AMG)

Role
Director
Signature
/s/ Kavita Padiyar, Attorney-in-Fact
Stock symbol
AMG
Transactions as of
Aug 14, 2025
Transactions value $
$0
Form type
4
Date filed
8/18/2025, 05:13 PM
Previous filing
Aug 4, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
STARR LOREN M Director C/O AFFILIATED MANAGERS GROUP, INC., 777 SOUTH FLAGLER DRIVE, WEST PALM BEACH /s/ Kavita Padiyar, Attorney-in-Fact 2025-08-18 0001217495

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AMG Common Stock Options Exercise $0 +544 +73.41% $0.00 1.29K Aug 15, 2025 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 Deferred Stock Units Award $0 +334 $0.00 334 Aug 14, 2025 Common Stock 334 Direct F2
transaction AMG Stock Units Options Exercise $0 -544 -16.87% $0.00 2.68K Aug 15, 2025 Common Stock 544 Direct F1, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Reflects the vesting of a previously reported award. Award vested in 2025.
F2 Reflects cash fees that the director has elected to defer under the Company's deferred compensation plan, which are notionally invested in a measurement fund tracking the Company's common stock during the deferral period. Each deferred stock unit is equal to one share of the Company's common stock, and becomes distributable in common stock upon the reporting person's separation from service as a member of the Board of Directors of the Company.
F3 Inclusive of previously reported deferred stock units.