| 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 | 22 Dec 2025 | 0002050028 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CHMG | COMMON STOCK | Tax liability | $3,353 | -58 | -1.7% | $57.81 | 3,433 | 19 Dec 2025 | Direct | |
| transaction | CHMG | COMMON STOCK | Tax liability | $3,122 | -54 | -1.6% | $57.81 | 3,379 | 19 Dec 2025 | Direct |