Form 4 Filing for Mercantile Bank Corp

Amy L. Sparks, a director at Mercantile Bank Corp, acquired 906 shares of common stock on May 22, 2026, through a dividend reinvestment plan. The transaction code "A" indicates an acquisition. The shares were acquired at a price of $0.0 per share, suggesting they were obtained via a dividend reinvestment. Following this transaction, Ms. Sparks now owns 6,489 shares of common stock. The filing, dated May 27, 2026, was signed by Adin J. Tarr as Attorney-in-Fact. This report pertains to Mercantile Bank Corp (MBWM).