| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| LEVY JEFFREY M | SVP & Chief Banking Officer | C/O COMMUNITY FINANCIAL SYSTEM, INC., 5790 WIDEWATERS PARKWAY, DEWITT | /s/ Danielle M. Cima, pursuant to a Confirming Statement executed by Jeffrey M. Levy | 28 Aug 2025 | 0001384972 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CBU | Common Stock | Sale | $88,380 | -1,440 | -18% | $61.38 | 6,657 | 27 Aug 2025 | Direct | |
| holding | CBU | Common Stock | 6,060 | 27 Aug 2025 | By 401(k) Plan | F1 |
| Id | Content |
|---|---|
| F1 | 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. |