| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| HAZELTON KIMBERLY A | Executive Vice President | ONE CHEMUNG CANAL PLAZA, PO BOX 1522, ELMIRA | Kathleen E. Cook, Attorney-in-Fact, pursuant to Power of Attorney dated July 16, 2025 | 17 Dec 2025 | 0001682546 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CHMG | COMMON STOCK | Tax liability | $6,286 | -106 | -1.4% | $59.30 | 7,470 | 15 Dec 2025 | Direct | |
| transaction | CHMG | COMMON STOCK | Tax liability | $3,812 | -64 | -0.86% | $59.57 | 7,406 | 16 Dec 2025 | Direct |