| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Stempin John J | Controller | ONE CHEMUNG CANAL PLAZA, PO BOX 1522, ELMIRA | Kathleen E. Cook, Attorney-in-Fact, pursuant to Power of Attorney dated July 16, 2025 | 22 Dec 2025 | 0001954922 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CHMG | COMMON STOCK | Tax liability | $694 | -12 | -3.2% | $57.81 | 368 | 19 Dec 2025 | Direct | |
| transaction | CHMG | COMMON STOCK | Tax liability | $462 | -8 | -2.2% | $57.81 | 360 | 19 Dec 2025 | Direct |