| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Padiyar Kavita | General Counsel & Corp. Sec. | C/O AFFILIATED MANAGERS GROUP, INC., 777 SOUTH FLAGLER DRIVE, WEST PALM BEACH | /s/ Kavita Padiyar | 13 May 2025 | 0002017736 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | AMG | Common Stock | Options Exercise | $1,845,250 | +25,000 | +138% | $73.81 | 43,107 | 09 May 2025 | Direct | |
| transaction | AMG | Common Stock | Tax liability | $3,118,812 | -17,407 | -40% | $179.17 | 25,700 | 09 May 2025 | Direct |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | AMG | Employee Stock Option (Right to Buy) | Options Exercise | $0 | -25,000 | -34% | $0.000000 | 49,085 | 09 May 2025 | Common Stock | 25,000 | $73.81 | Direct |