ISABELLA BANK CORP 8-K

What Happened

• Isabella Bank Corporation filed a Form 8-K on January 5, 2026, announcing the appointment of Gerald J. Ritzert as its Chief Financial Officer, effective that same day. Mr. Ritzert, age 56, brings over 30 years of accounting and finance experience, including roles as Executive Vice President & CFO of First National Bank and Trust (since 2021) and prior service as CFO of Dollar Bank, FSB.
• In connection with the appointment, Neil M. McDonnell, President of Isabella Bank (the company’s wholly owned bank subsidiary), is no longer acting as Interim Chief Financial Officer. Mr. McDonnell had served as Interim CFO beginning August 28, 2025.

Key Details

• Filing: Form 8-K dated January 5, 2026 (Item 5.02 — Appointment of Certain Officers).
• Effective date of CFO appointment: January 5, 2026.
• Gerald J. Ritzert: age 56, >30 years in accounting/finance; most recent role Executive VP & CFO at First National Bank and Trust (Beloit, WI) since 2021; former CFO of Dollar Bank, FSB.
• Neil M. McDonnell served as Interim CFO from August 28, 2025 until Ritzert’s appointment.

Why It Matters

• A permanent CFO appointment clarifies the company’s executive leadership and financial oversight after a period with an interim CFO. For investors, this is a governance and management update that can affect confidence in financial reporting and strategic execution. The filing does not include any compensation details or changes to financial statements beyond the appointment.