ISBA

Business Context and Reporting Period

Company: Isabella Bank Corporation (ISBA)
Filing Type: Form 8-K (Current Report)
Date of Report: November 20, 2025
Reporting Period: Event date only; no financial period covered.

Key Financial Metrics

This filing does not contain financial statements, revenue, profit, cash flow, margin, debt, or liquidity data. The report is limited to a corporate action announcement.

Material Changes

No material changes to financial performance or operations are reported in this document. The filing solely announces a dividend declaration.

Guidance, Outlook, and Management Commentary

Dividend Declaration: The Board of Directors declared a fourth-quarter cash dividend of $0.28 per common share.
Payment Details:

• Payable Date: December 19, 2025
• Record Date: December 17, 2025

Management Commentary: The filing incorporates a press release (Exhibit 99.1) but does not provide additional management commentary, guidance, or risk factors within the text of the 8-K itself.

Investor Verification Checklist

• Verify the ex-dividend date (typically two business days prior to the record date of December 17, 2025) to confirm eligibility for the $0.28 payment.
• Review the full text of the press release (Exhibit 99.1) for any additional context regarding the dividend decision.
• Confirm the company's current financial health in the most recent 10-Q or 10-K filing, as this 8-K contains no financial data.