Form 4 Filing for CIVISTA BANCSHARES, INC.

This filing details transactions of common stock by GERALD B. WURM, identified as a Subsidiary Director. On February 24, 2026, and May 19, 2026, shares were acquired through a company dividend reinvestment feature, with 772.328 and 728.99 shares added to the Trust, and 316.687 and 298.916 shares to the Mary L. Wurm Trust, respectively. On June 8, 2026, a stock award was granted from the Civista Bancshares, Inc. 2024 Incentive Plan, adding 1210 shares directly to Mr. Wurm's holdings. Following these transactions, the total shares held in the Grandson #1 Trust amount to 1275, and directly held shares total 4112.