| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CBU | Common Stock | Award | $0 | +1,529 | +11% | $0.000000 | 15,880 | 18 Mar 2025 | Direct | F1 |
| holding | CBU | Common Stock | 11,027 | 18 Mar 2025 | By 401(k) Plan | F2 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CBU | Stock Option | Award | $0 | +5,647 | $0.000000 | 5,647 | 18 Mar 2025 | Common Stock | 5,647 | $58.10 | Direct | F3, F4 |
| Id | Content |
|---|---|
| F1 | This amendment is filed to correct the number of shares of restricted stock acquired. The correct number is 1,529 shares. |
| F2 | The number of shares reported herein acquired pursuant to Community Financial System, Inc.'s 401(k) Plan and are based on a current plan statement. |
| F3 | This amendment is filed to correct the number of stock options acquired. The correct number is 5,647 shares. |
| F4 | The option vests ratably on March 18, 2026, 2027, 2028, 2029, and 2030. |