(d) As previously disclosed in the Original Form 8-K, at the Annual Meeting, the Corporation’s shareholders voted to hold a say-on-pay vote every three years. Based on these results, the Corporation has determined that it will hold say-on-pay votes every three years until the next required advisory vote on the frequency of say-on-pay votes occurs or until the Corporation otherwise determines that a different frequency for say-on-pay votes is in the best interests of the shareholders. The next required advisory vote on the frequency will occur no later than 2023.

About ISABELLA BANK CORPORATION (OTCMKTS:ISBA)

Isabella Bank Corporation is a financial services holding company. The Company’s subsidiary, Isabella Bank, has approximately 30 banking offices located throughout Clare, Gratiot, Isabella, Mecosta, Midland, Montcalm and Saginaw counties. The Company offers a range of banking services to businesses, institutions and individuals. Its lending activities include loans for commercial and agricultural operating and real estate purposes, residential real estate loans and consumer loans. Deposit services offered include checking accounts, savings accounts, certificates of deposit, direct deposits, cash management services, mobile and Internet banking, electronic bill pay services and automated teller machines. The Company also offers full service trust and brokerage services. The Company provides group life, health, accident, disability and other insurance programs, as well as a number of other employee benefit programs.