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BCS

Current Report · Items 8.01 · 8-K

Isabella Bank Corporation

ISBANASDAQEQUITYCurrent

Other Events

Item 8.01 Other Events. On September 28, 2026, Isabella Bank Corporation issued a press release announcing the mailing of election materials to Grand River Commerce, Inc. shareholders and the election deadline. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference.

Filed Sep 28, 2026Accepted Sep 28, 2026, 4:30 PM EDTCIK 842517Accession 0000842517-26-000224
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Company context

Isabella Bank Corporation (Nasdaq: ISBA) is the parent holding company of Isabella Bank, a state-chartered community bank headquartered in Mt. Pleasant, Michigan. Isabella Bank was established in 1903 and has been committed to serving its customers' and communities' local banking needs for over 120 years. The Bank offers personal and commercial lending and deposit products, as well as investment, trust, and estate planning services through Isabella Wealth. The Bank has 31 locations throughout eight Mid-Michigan counties: Bay, Clare, Gratiot, Isabella, Mecosta, Midland, Montcalm, and Saginaw.

Current securities

Recent company filings

  1. Other EventsSep 21, 2026
  2. Other EventsAug 27, 2026
  3. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory ArrangementsAug 14, 2026
  4. 424B3 filingAug 10, 2026
  5. 10-Q filingAug 10, 2026

Registered securities in this filing

ISABELLA BANK CORP · 8-K · Filed 2026-09-28

As filed in this accession. Current/historical status below comes from the governed listing record; the cover itself remains exact to this filing.

Common stock, no par value per share

Symbol
ISBA
Exchange
NASDAQ
Classification
COMMON
Status
Current
Filing context

Context: c-1

Dimensions: Not supplied

Accession 000084251726000224 · 1 registered-security cover member

Read the exact SEC filing ↗

Disclosure sections

Items 8.01

Select an item to read the extracted section. The as-filed document remains the primary evidence.

Item 8.01Item 8.01 - Other Events
Item 8.01 Other Events. On September 28, 2026, Isabella Bank Corporation issued a press release announcing the mailing of election materials to Grand River Commerce, Inc. shareholders and the election deadline. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference.

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