Isabella Bank Corp annual meeting results: all four proposals approved by shareholders

Proposal 4 - Ratify the Appointment of Plante & Moran, PLLC The Company’s shareholders ratified the appointment of Plante & Moran, PLLC as the Company's independent registered public accounting firm for the year ending December 31, 2026. For Against Abstain 4,070,547 39,773 35,894

Proposal 2 - Advisory (Non-Binding) Vote on Executive Compensation The Company’s shareholders voted to approve, on an advisory, non-binding basis, the compensation of the Company's named executive officers. For Against Abstain Broker Non-Votes 3,170,901 102,232 113,852 759,229

Proposal 3 - Approval of the Isabella Bank Corporation 2025 Employee Stock Purchase Plan The Company’s shareholders voted to approve the Isabella Bank Corporation 2025 Employee Stock Purchase Plan. For Against Abstain Broker Non-Votes 3,227,845 47,669 111,471 759,229

Proposal 1 - Election of Directors The following individual was elected to serve as a director of the Company to hold office until the 2027 Annual Meeting of Shareholders or until his successor has been duly elected and qualified or until his earlier death, resignation, or removal from office. Nominee For Withhold Broker Non-Votes Brian B. Tessin 3,320,363 66,622 759,229 The following individuals were elected to serve as directors of the Company to hold office until the 2029 Annual Meeting of Shareholders or until their respective successors have been duly elected and qualified or until their earlier death, resignation, or removal from office. Nominee For Withhold Broker Non-Votes Dr. Jeffrey J. Barnes 3,303,689 83,296 759,229 David B. Behen 3,345,576 41,409 759,229 Melinda M. Coffin 3,312,891 74,094 759,229 Vicki L. Rupp 3,328,378 58,607 759,229