Form 4 Filing for Shannon O'Donnell

Shannon O'Donnell, Senior Vice President of AUBURN NATIONAL BANCORPORATION, INC, reported the acquisition of securities on September 30, 2026. The transactions included the acquisition of 16 shares of common stock at $27.41 per share and 11 shares of common stock at $27.70 per share. Following these transactions, O'Donnell directly owns 1918 and 1929 shares of common stock, respectively. The filing, dated October 2, 2026, indicates these transactions were part of an Optional Cash Purchase/Dividend Reinvestment Plan (OCP/DRIP).