| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Churchill Dwight D. | Director | C/O AFFILIATED MANAGERS GROUP, INC., 777 SOUTH FLAGLER DRIVE, WEST PALM BEACH | /s/ Kavita Padiyar, Attorney-in-Fact | 13 May 2025 | 0001486072 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | AMG | Common Stock | Options Exercise | $216,494 | +1,353 | +4.9% | $160.01 | 28,810 | 12 May 2025 | Direct | |
| transaction | AMG | Common Stock | Tax liability | $216,552 | -1,178 | -4.1% | $183.83 | 27,632 | 12 May 2025 | Direct |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | AMG | Director Stock Option (Right to Buy) | Options Exercise | $0 | -1,353 | -100% | $0.000000 | 0 | 12 May 2025 | Common Stock | 1,353 | $160.01 | Direct |