Form 4 Filing for Cosgrove Peter K at CHEMUNG FINANCIAL CORP

Peter K. Cosgrove, Executive Vice President & CCO of CHEMUNG FINANCIAL CORP (CHMG), reported a disposition of 117 shares of COMMON STOCK on December 19, 2025, at a price of $57.81 per share. Following this transaction, Cosgrove owns 6158 shares directly. Another disposition of 106 shares of COMMON STOCK was also reported on the same date at the same price, resulting in 6052 shares owned directly. The filing was signed by Kathleen E. Cook, Attorney-in-Fact, on December 22, 2025.