Isabella Bank Corp SEC filings ISBA
Isabella Bank Corp has 1,006 filings in SEC EDGAR's recent list, going back to Mar 21, 2019. Its latest annual report, Form ARS, was filed on Mar 23, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Oct 30, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 2, 2026 (acquisition or sale of assets, other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 8-K |
Current report
Acquisition or sale of assets, Other events
|
Nov 2, 2026 | Nov 2, 2026 |
| 10-Q | Quarterly report | Oct 30, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations
|
Oct 29, 2026 | Oct 29, 2026 |
| 4 | Insider transaction | Oct 20, 2026 | Oct 16, 2026 |
| 8-K |
Current report
Other events
|
Oct 6, 2026 | Oct 5, 2026 |
| 8-K |
Current report
Other events
|
Sep 28, 2026 | Sep 28, 2026 |
| 8-K |
Current report
Other events
|
Sep 21, 2026 | Sep 21, 2026 |
| 4 | Insider transaction | Sep 17, 2026 | Sep 16, 2026 |
| 4 | Insider transaction | Sep 3, 2026 | Sep 1, 2026 |
| 4 | Insider transaction | Sep 3, 2026 | Sep 1, 2026 |
| 4 | Insider transaction | Sep 3, 2026 | Sep 1, 2026 |
| 4 | Insider transaction | Sep 3, 2026 | Sep 1, 2026 |
| 4 | Insider transaction | Sep 3, 2026 | Sep 1, 2026 |
| 4 | Insider transaction | Sep 3, 2026 | Sep 1, 2026 |
| 4 | Insider transaction | Sep 3, 2026 | Sep 1, 2026 |
| 4 | Insider transaction | Sep 3, 2026 | Sep 1, 2026 |
| 4 | Insider transaction | Sep 3, 2026 | Sep 1, 2026 |
| 8-K |
Current report
Other events
|
Aug 27, 2026 | Aug 27, 2026 |
| 4 | Insider transaction | Aug 17, 2026 | Aug 17, 2026 |
| 8-K |
Current report
Officer or director change
|
Aug 14, 2026 | Aug 11, 2026 |
| 424B3 | Prospectus | Aug 10, 2026 | — |
| 10-Q | Quarterly report | Aug 10, 2026 | Jun 30, 2026 |
| EFFECT | Filing | Aug 6, 2026 | — |
| S-4/A | Filing | Aug 6, 2026 | — |
| S-4/A | Filing | Aug 4, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 28, 2026 | — |
| S-4 | Registration for a merger or exchange | Jul 24, 2026 | — |
| 8-K |
Current report
Results of operations
|
Jul 23, 2026 | Jul 23, 2026 |
| 4 | Insider transaction | Jul 17, 2026 | Jul 16, 2026 |
| 3 | Initial insider ownership | Jul 8, 2026 | Jul 1, 2026 |
| 425 | Filing | Jun 18, 2026 | — |
| 4 | Insider transaction | Jun 17, 2026 | Jun 16, 2026 |
| 8-K |
Current report
Material agreement
|
Jun 16, 2026 | Jun 16, 2026 |
| 424B5 | Prospectus supplement | Jun 16, 2026 | — |
| 425 | Filing | Jun 15, 2026 | — |
| 8-K |
Current report
Material agreement
|
Jun 15, 2026 | Jun 11, 2026 |
| 425 | Filing | Jun 12, 2026 | — |
| 425 | Filing | Jun 12, 2026 | — |
| 425 | Filing | Jun 12, 2026 | — |
| 425 | Filing | Jun 12, 2026 | — |
| 425 | Filing | Jun 12, 2026 | — |
| 425 | Filing | Jun 12, 2026 | — |
| 425 | Filing | Jun 12, 2026 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 12, 2026 | Jun 12, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| 8-K |
Current report
Other events
|
May 28, 2026 | May 28, 2026 |
| 4 | Insider transaction | May 20, 2026 | May 18, 2026 |
| 8-K |
Current report
Shareholder vote results
|
May 7, 2026 | May 5, 2026 |
| 10-Q | Quarterly report | May 6, 2026 | Mar 31, 2026 |
| EFFECT | Filing | Apr 23, 2026 | — |
| 8-K |
Current report
Results of operations
|
Apr 23, 2026 | Apr 23, 2026 |
| CORRESP | Letter to the SEC | Apr 21, 2026 | — |
| UPLOAD | Letter from the SEC | Apr 20, 2026 | — |
| 4 | Insider transaction | Apr 17, 2026 | Apr 16, 2026 |
| S-3 | Shelf registration | Apr 16, 2026 | — |
| 8-K |
Current report
Officer or director change
|
Mar 25, 2026 | Mar 23, 2026 |
| DEF 14A | Proxy statement | Mar 23, 2026 | May 5, 2026 |
| ARS | Annual report to shareholders | Mar 23, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Mar 18, 2026 | Mar 16, 2026 |
| 10-K | Annual report | Mar 13, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| S-8 | Employee stock plan registration | Feb 26, 2026 | — |
| 8-K |
Current report
Other events
|
Feb 26, 2026 | Feb 26, 2026 |
| 4 | Insider transaction | Feb 18, 2026 | Feb 17, 2026 |
| 5 | Annual insider ownership | Feb 13, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 5, 2026 | Feb 5, 2026 |
| 4 | Insider transaction | Feb 2, 2026 | Jan 28, 2026 |
| 4 | Insider transaction | Jan 30, 2026 | Jan 28, 2026 |
| 4 | Insider transaction | Jan 30, 2026 | Jan 28, 2026 |
| 4 | Insider transaction | Jan 23, 2026 | Jan 20, 2026 |
| 4 | Insider transaction | Jan 23, 2026 | Jan 20, 2026 |
| 4 | Insider transaction | Jan 23, 2026 | Jan 20, 2026 |
| 4 | Insider transaction | Jan 23, 2026 | Jan 20, 2026 |
| 4 | Insider transaction | Jan 23, 2026 | Jan 20, 2026 |
| 4 | Insider transaction | Jan 23, 2026 | Jan 20, 2026 |
| 4 | Insider transaction | Jan 21, 2026 | Jan 16, 2026 |
| 3 | Initial insider ownership | Jan 13, 2026 | Jan 5, 2026 |
| 8-K |
Current report
Officer or director change
|
Jan 5, 2026 | Jan 5, 2026 |
| 4/A | Form 4/a | Dec 22, 2025 | Sep 2, 2025 |
| 4/A | Form 4/a | Dec 22, 2025 | Dec 1, 2025 |
| 4 | Insider transaction | Dec 11, 2025 | Dec 9, 2025 |
| 4 | Insider transaction | Dec 3, 2025 | Dec 1, 2025 |
| 4 | Insider transaction | Dec 3, 2025 | Dec 1, 2025 |
| 4 | Insider transaction | Dec 3, 2025 | Dec 1, 2025 |
| 4 | Insider transaction | Dec 3, 2025 | Dec 1, 2025 |
| 4 | Insider transaction | Dec 3, 2025 | Dec 1, 2025 |
| 4 | Insider transaction | Dec 3, 2025 | Dec 1, 2025 |
| 4 | Insider transaction | Dec 3, 2025 | Dec 1, 2025 |
| 4 | Insider transaction | Dec 3, 2025 | Dec 1, 2025 |
| 4 | Insider transaction | Dec 3, 2025 | Dec 1, 2025 |
| 4 | Insider transaction | Dec 3, 2025 | Dec 1, 2025 |
| 8-K |
Current report
Other events
|
Nov 20, 2025 | Nov 20, 2025 |
| 10-Q | Quarterly report | Nov 10, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Oct 27, 2025 | Oct 27, 2025 |
| 3 | Initial insider ownership | Oct 17, 2025 | Oct 6, 2025 |
| 144 | Notice of proposed sale | Oct 15, 2025 | — |
| 8-K |
Current report
Officer or director change
|
Oct 9, 2025 | Oct 6, 2025 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Sep 30, 2025 | Sep 24, 2025 |
| 4 | Insider transaction | Sep 8, 2025 | Sep 5, 2025 |
| 4 | Insider transaction | Sep 4, 2025 | Sep 2, 2025 |
| 4 | Insider transaction | Sep 4, 2025 | Sep 2, 2025 |
| 4 | Insider transaction | Sep 4, 2025 | Sep 2, 2025 |
| 4 | Insider transaction | Sep 4, 2025 | Sep 2, 2025 |
| 4 | Insider transaction | Sep 4, 2025 | Sep 2, 2025 |
| 4 | Insider transaction | Sep 4, 2025 | Sep 2, 2025 |
| 4 | Insider transaction | Sep 4, 2025 | Sep 2, 2025 |
| 4 | Insider transaction | Sep 4, 2025 | Sep 2, 2025 |
| 4 | Insider transaction | Sep 4, 2025 | Sep 2, 2025 |
| 8-K |
Current report
Officer or director change
|
Sep 2, 2025 | Aug 28, 2025 |
| 8-K |
Current report
Other events
|
Aug 28, 2025 | Aug 28, 2025 |
| 4 | Insider transaction | Aug 19, 2025 | Aug 18, 2025 |
| 10-Q | Quarterly report | Aug 11, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Jul 24, 2025 | Jul 24, 2025 |
| 4 | Insider transaction | Jul 17, 2025 | Jul 16, 2025 |
| 3 | Initial insider ownership | Jul 10, 2025 | Jul 1, 2025 |
| 8-K |
Current report
Officer or director change
|
Jun 30, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jun 18, 2025 | Jun 16, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 2, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 2, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 2, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 2, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 2, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 2, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 2, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 2, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 2, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 2, 2025 |
| 8-K |
Current report
Other events
|
May 29, 2025 | May 29, 2025 |
| 4 | Insider transaction | May 22, 2025 | May 21, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 16, 2025 |
| 4 | Insider transaction | May 14, 2025 | May 13, 2025 |
| 4 | Insider transaction | May 13, 2025 | May 9, 2025 |
| 8-K |
Current report
Shareholder vote results
|
May 9, 2025 | May 6, 2025 |
| CERT | Filing | May 9, 2025 | — |
| 8-A12B | Filing | May 8, 2025 | — |
| 8-K |
Current report
Other events
|
May 8, 2025 | May 8, 2025 |
| 10-Q | Quarterly report | May 8, 2025 | Mar 31, 2025 |
| 4 | Insider transaction | May 2, 2025 | May 1, 2025 |
| 4 | Insider transaction | May 2, 2025 | May 1, 2025 |
| 4 | Insider transaction | May 2, 2025 | May 1, 2025 |
| 4 | Insider transaction | May 2, 2025 | May 1, 2025 |
| 8-K |
Current report
Other events
|
May 1, 2025 | May 1, 2025 |
| 8-K |
Current report
Results of operations
|
Apr 17, 2025 | Apr 17, 2025 |
| 4 | Insider transaction | Apr 16, 2025 | Apr 16, 2025 |
| 8-K |
Current report
Other events
|
Apr 8, 2025 | Apr 8, 2025 |
| 8-K |
Current report
Officer or director change
|
Apr 7, 2025 | Apr 4, 2025 |
| 4 | Insider transaction | Apr 2, 2025 | Apr 1, 2025 |
| 4 | Insider transaction | Apr 2, 2025 | Apr 1, 2025 |
| 4 | Insider transaction | Apr 2, 2025 | Apr 1, 2025 |
| 4 | Insider transaction | Apr 2, 2025 | Apr 1, 2025 |
| ARS | Annual report to shareholders | Mar 25, 2025 | Dec 31, 2024 |
| DEF 14A | Proxy statement | Mar 25, 2025 | May 6, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 17, 2025 |
| 3 | Initial insider ownership | Mar 13, 2025 | Mar 3, 2025 |
| 10-K | Annual report | Mar 12, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Mar 6, 2025 | Mar 4, 2025 |
| 4 | Insider transaction | Mar 6, 2025 | Mar 4, 2025 |
| 4 | Insider transaction | Mar 6, 2025 | Mar 4, 2025 |
| 4 | Insider transaction | Mar 6, 2025 | Mar 4, 2025 |
| 8-K |
Current report
Officer or director change
|
Mar 5, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 5, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 5, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 5, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 5, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 5, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 5, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 5, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 5, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 5, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 5, 2025 | Mar 3, 2025 |
| 8-K |
Current report
Other events
|
Feb 27, 2025 | Feb 27, 2025 |
| UPLOAD | Letter from the SEC | Feb 26, 2025 | — |
| CORRESP | Letter to the SEC | Feb 19, 2025 | — |
| 4 | Insider transaction | Feb 19, 2025 | Feb 18, 2025 |
| 5 | Annual insider ownership | Feb 13, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Feb 5, 2025 | Feb 3, 2025 |
| 4 | Insider transaction | Feb 5, 2025 | Feb 3, 2025 |
| 4 | Insider transaction | Feb 5, 2025 | Feb 3, 2025 |
| 4 | Insider transaction | Feb 5, 2025 | Feb 3, 2025 |
| 4 | Insider transaction | Feb 4, 2025 | Jan 31, 2025 |
| 4 | Insider transaction | Feb 4, 2025 | Jan 31, 2025 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- State Commercial Banks (SIC 6022)
- Listed as
- ISBA (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- MI
- Headquarters
- Mt Pleasant, MI
- SEC filer status
- Accelerated filer, Smaller reporting company
- SEC CIK
- 842517
- Former names
- IBT BANCORP INC /MI/ (until May 16, 2008)
Other State Commercial Banks companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.