| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Meisner Mary E | EVP & Chief Risk Ofcr. | ONE CHEMUNG CANAL PLAZA, P.O. BOX 1522, ELMIRA | Kathleen E. Cook, Attorney-in-Fact, pursuant to Power of Attorney dated July 16, 2025 | 17 Dec 2025 | 0002050028 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CHMG | COMMON STOCK | Tax liability | $3,262 | -55 | -1.5% | $59.30 | 3,522 | 15 Dec 2025 | Direct | |
| transaction | CHMG | COMMON STOCK | Tax liability | $1,847 | -31 | -0.88% | $59.57 | 3,491 | 16 Dec 2025 | Direct |