Isabella Bank Corporation Equity Distribution Agreement

Isabella Bank Corporation and its wholly-owned subsidiary, Isabella Bank, have entered into an Equity Distribution Agreement with Piper Sandler & Co. as sales agent. Through this agreement, the company may issue and sell shares of its common stock, with an aggregate gross sales price of up to $30,000,000. These sales will be conducted as "at the market offerings" as defined by the Securities Act of 1933, or through other methods like privately negotiated transactions or block trades, as permitted by law and specified by the company. The company will determine the parameters for these sales, including the number of shares, time period, daily sales limits, and minimum pricing. Isabella Bank Corporation will pay Piper Sandler & Co. a commission of up to 3.0% of the gross sales price. The net proceeds from the offering are intended for general corporate purposes, potentially including contributions to the bank's capital to support lending activities and growth. The agreement includes customary representations, warranties, and covenants, with the company and the bank providing indemnification and reimbursement for expenses to the agent. Either party may suspend or terminate the offering under specified conditions. The shares will be issued under the company's effective shelf registration statement on Form S-3.