| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Engel Marcy | Director | C/O AFFILIATED MANAGERS GROUP, INC., 777 SOUTH FLAGLER DRIVE, WEST PALM BEACH | /s/ Kavita Padiyar, Attorney-in-Fact | 09 Mar 2026 | 0001741893 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | AMG | Stock Units | Award | +335 | $0.000000* | 335 | 05 Mar 2026 | Common Stock | 335 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | 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. |