Form 4 Filing for Sanchez Nelson F

This filing details a transaction by Sanchez Nelson F, a director at MERCANTILE BANK CORP (MBWM). On May 22, 2026, Sanchez Nelson F acquired 715 shares of Common Stock through the Issuer's dividend reinvestment plan, with a transaction price of $0.0 per share. Following this transaction, the post-transaction shares owned are 3899. Additionally, the filing notes that Sanchez Nelson F owns 3502 shares of Common Stock indirectly through an IRA. The footnote F1 clarifies that shares acquired were through reinvesting cash dividends.