Financial Institutions Inc SEC filings FIISO
Financial Institutions Inc has 1,000 filings in SEC EDGAR's recent list, going back to Dec 5, 2014. Its latest annual report, Form ARS, was filed on Apr 6, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 3, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 29, 2026 (results of operations, regulation fd disclosure). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Nov 3, 2026 | Nov 2, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Oct 29, 2026 | Sep 30, 2026 |
| 4 | Insider transaction | Sep 28, 2026 | Sep 25, 2026 |
| 8-K |
Current report
Officer or director change
|
Sep 8, 2026 | Sep 8, 2026 |
| 4 | Insider transaction | Sep 3, 2026 | Sep 2, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Aug 26, 2026 | Aug 26, 2026 |
| 10-Q | Quarterly report | Aug 3, 2026 | Jun 30, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 28, 2026 | — |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jul 23, 2026 | Jun 30, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 14, 2026 | — |
| 11-K | Employee savings plan report | Jun 18, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | May 21, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 20, 2026 |
| 8-K |
Current report
Shareholder vote results
|
May 21, 2026 | May 20, 2026 |
| 3 | Initial insider ownership | May 21, 2026 | May 20, 2026 |
| 3 | Initial insider ownership | May 21, 2026 | May 20, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
May 20, 2026 | May 20, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| 10-Q | Quarterly report | May 4, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Apr 23, 2026 | Mar 31, 2026 |
| DEF 14A | Proxy statement | Apr 6, 2026 | Mar 30, 2026 |
| ARS | Annual report to shareholders | Apr 6, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 6, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 26, 2026 | — |
| 4 | Insider transaction | Mar 23, 2026 | Mar 20, 2026 |
| 4 | Insider transaction | Mar 23, 2026 | Mar 20, 2026 |
| 4 | Insider transaction | Mar 23, 2026 | Mar 20, 2026 |
| 4 | Insider transaction | Mar 23, 2026 | Mar 20, 2026 |
| 4 | Insider transaction | Mar 23, 2026 | Mar 20, 2026 |
| 4 | Insider transaction | Mar 23, 2026 | Mar 20, 2026 |
| 4 | Insider transaction | Mar 23, 2026 | Mar 20, 2026 |
| 4 | Insider transaction | Mar 12, 2026 | Mar 12, 2026 |
| 8-K |
Current report
Officer or director change
|
Mar 10, 2026 | Mar 4, 2026 |
| 10-K | Annual report | Mar 9, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Mar 6, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 6, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 6, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 6, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 6, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 6, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 6, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 6, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 6, 2026 | Mar 5, 2026 |
| EFFECT | Filing | Feb 17, 2026 | — |
| 424B3 | Prospectus | Feb 17, 2026 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 12, 2026 | Feb 12, 2026 |
| CORRESP | Letter to the SEC | Feb 12, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 10, 2026 | — |
| UPLOAD | Letter from the SEC | Feb 5, 2026 | — |
| S-4 | Registration for a merger or exchange | Jan 30, 2026 | — |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jan 29, 2026 | Dec 31, 2025 |
| 5 | Annual insider ownership | Jan 9, 2026 | Dec 31, 2025 |
| 5 | Annual insider ownership | Jan 9, 2026 | Dec 31, 2025 |
| 5 | Annual insider ownership | Jan 9, 2026 | Dec 31, 2025 |
| 5 | Annual insider ownership | Jan 9, 2026 | Dec 31, 2025 |
| 5 | Annual insider ownership | Jan 9, 2026 | Dec 31, 2025 |
| D | Filing | Dec 17, 2025 | — |
| 8-K |
Current report
Material agreement, New debt, Regulation FD disclosure, Other events
|
Dec 11, 2025 | Dec 11, 2025 |
| 4 | Insider transaction | Dec 1, 2025 | Nov 28, 2025 |
| 4 | Insider transaction | Dec 1, 2025 | Nov 28, 2025 |
| 4 | Insider transaction | Dec 1, 2025 | Nov 28, 2025 |
| 4 | Insider transaction | Dec 1, 2025 | Nov 28, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 17, 2025 | Nov 14, 2025 |
| 10-Q | Quarterly report | Nov 3, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Oct 23, 2025 | Sep 30, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Oct 2, 2025 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 22, 2025 | Sep 18, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Aug 25, 2025 | Aug 25, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Aug 15, 2025 | — |
| S-8 | Employee stock plan registration | Aug 4, 2025 | — |
| 10-Q | Quarterly report | Aug 4, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jul 24, 2025 | Jun 30, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 15, 2025 | — |
| 4 | Insider transaction | Jul 9, 2025 | Jul 8, 2025 |
| 11-K | Employee savings plan report | Jun 18, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | May 30, 2025 | May 28, 2025 |
| 4 | Insider transaction | May 30, 2025 | May 28, 2025 |
| 4 | Insider transaction | May 30, 2025 | May 28, 2025 |
| 4 | Insider transaction | May 30, 2025 | May 28, 2025 |
| 4 | Insider transaction | May 30, 2025 | May 28, 2025 |
| 4 | Insider transaction | May 30, 2025 | May 28, 2025 |
| 4 | Insider transaction | May 30, 2025 | May 28, 2025 |
| 4 | Insider transaction | May 30, 2025 | May 28, 2025 |
| 4 | Insider transaction | May 30, 2025 | May 28, 2025 |
| 4 | Insider transaction | May 30, 2025 | May 28, 2025 |
| 4 | Insider transaction | May 30, 2025 | May 28, 2025 |
| 3 | Initial insider ownership | May 29, 2025 | May 28, 2025 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 29, 2025 | May 28, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
May 28, 2025 | May 28, 2025 |
| 10-Q | Quarterly report | May 5, 2025 | Mar 31, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 30, 2025 | — |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Apr 28, 2025 | Mar 31, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 15, 2025 | — |
| DEFA14A | Additional proxy material | Apr 14, 2025 | — |
| DEF 14A | Proxy statement | Apr 14, 2025 | May 28, 2025 |
| ARS | Annual report to shareholders | Apr 14, 2025 | Dec 31, 2024 |
| 4/A | Filing | Apr 7, 2025 | Mar 6, 2025 |
| 4/A | Filing | Apr 3, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 27, 2025 | Mar 26, 2025 |
| 4/A | Filing | Mar 21, 2025 | Mar 6, 2025 |
| 4/A | Filing | Mar 21, 2025 | Mar 6, 2025 |
| 4/A | Filing | Mar 21, 2025 | Mar 6, 2025 |
| 4/A | Filing | Mar 21, 2025 | Mar 6, 2025 |
| 4/A | Filing | Mar 21, 2025 | Mar 6, 2025 |
| 4/A | Filing | Mar 21, 2025 | Mar 6, 2025 |
| 4/A | Filing | Mar 21, 2025 | Mar 6, 2025 |
| SCHEDULE 13D | Ownership over 5% (active) | Mar 18, 2025 | — |
| 4 | Insider transaction | Mar 18, 2025 | Mar 16, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 16, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 16, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 16, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 16, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 16, 2025 |
| 4 | Insider transaction | Mar 17, 2025 | Mar 6, 2025 |
| 3 | Initial insider ownership | Mar 17, 2025 | Mar 3, 2025 |
| 10-K | Annual report | Mar 12, 2025 | Dec 31, 2024 |
| 8-K/A |
Amended current report
Results of operations, Regulation FD disclosure
|
Mar 10, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Material agreement, Other events
|
Mar 10, 2025 | Mar 7, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 6, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 6, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 6, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 6, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 6, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 6, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 6, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 6, 2025 |
| 8-K |
Current report
Officer or director change
|
Mar 6, 2025 | Mar 4, 2025 |
| 8-K |
Current report
Other events
|
Mar 6, 2025 | Mar 6, 2025 |
| 4 | Insider transaction | Feb 14, 2025 | Feb 12, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 13, 2025 | Feb 12, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 5, 2025 | — |
| 5 | Annual insider ownership | Feb 4, 2025 | Dec 31, 2024 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 30, 2025 | — |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jan 30, 2025 | Dec 31, 2024 |
| 3 | Initial insider ownership | Jan 27, 2025 | Jan 22, 2025 |
| 8-K |
Current report
Officer or director change
|
Jan 27, 2025 | Jan 22, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 23, 2025 | — |
| 5 | Annual insider ownership | Jan 7, 2025 | Dec 31, 2024 |
| 5 | Annual insider ownership | Jan 7, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Dec 16, 2024 | Dec 13, 2024 |
| 4 | Insider transaction | Dec 16, 2024 | Dec 13, 2024 |
| 4 | Insider transaction | Dec 16, 2024 | Dec 13, 2024 |
| 4 | Insider transaction | Dec 16, 2024 | Dec 13, 2024 |
| 4 | Insider transaction | Dec 16, 2024 | Dec 13, 2024 |
| 4 | Insider transaction | Dec 16, 2024 | Dec 13, 2024 |
| 4 | Insider transaction | Dec 16, 2024 | Dec 13, 2024 |
| 4 | Insider transaction | Dec 16, 2024 | Dec 13, 2024 |
| 4 | Insider transaction | Dec 16, 2024 | Dec 13, 2024 |
| 4 | Insider transaction | Dec 16, 2024 | Dec 13, 2024 |
| 4 | Insider transaction | Dec 16, 2024 | Dec 13, 2024 |
| 4 | Insider transaction | Dec 16, 2024 | Dec 13, 2024 |
| 4 | Insider transaction | Dec 16, 2024 | Dec 13, 2024 |
| 4 | Insider transaction | Dec 16, 2024 | Dec 13, 2024 |
| 4 | Insider transaction | Dec 16, 2024 | Dec 13, 2024 |
| 8-K |
Current report
Material agreement, Other events
|
Dec 12, 2024 | Dec 11, 2024 |
| 424B5 | Prospectus supplement | Dec 12, 2024 | — |
| FWP | Free writing prospectus | Dec 11, 2024 | — |
| 424B5 | Prospectus supplement | Dec 11, 2024 | — |
| 4 | Insider transaction | Dec 6, 2024 | Dec 5, 2024 |
| 4 | Insider transaction | Dec 6, 2024 | Dec 5, 2024 |
| 4 | Insider transaction | Dec 6, 2024 | Dec 5, 2024 |
| 4 | Insider transaction | Dec 6, 2024 | Dec 5, 2024 |
| 4 | Insider transaction | Dec 6, 2024 | Dec 5, 2024 |
| EFFECT | Filing | Dec 4, 2024 | — |
| CORRESP | Letter to the SEC | Dec 2, 2024 | — |
| UPLOAD | Letter from the SEC | Nov 27, 2024 | — |
| S-3 | Shelf registration | Nov 26, 2024 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 20, 2024 | Nov 20, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 12, 2024 | — |
| 10-Q | Quarterly report | Nov 4, 2024 | Sep 30, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 4, 2024 | — |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Oct 24, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Other events
|
Sep 16, 2024 | Sep 16, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Aug 19, 2024 | Aug 19, 2024 |
| 4 | Insider transaction | Aug 6, 2024 | Aug 2, 2024 |
| 10-Q | Quarterly report | Aug 5, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jul 25, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Officer or director change
|
Jun 25, 2024 | Jun 19, 2024 |
| 11-K | Employee savings plan report | Jun 21, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 18, 2024 | Jun 18, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 5, 2024 |
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
- National Commercial Banks (SIC 6021)
- Listed as
- FISI (Nasdaq), FIISO (OTC), FIISP (OTC)
- Fiscal year ends
- December 31
- Incorporated in
- NY
- Headquarters
- Warsaw, NY
- SEC filer status
- Accelerated filer
- SEC CIK
- 862831
- Former names
- FINANCIAL INSTITUTIONS INC (until Nov 3, 2026)
Other National Commercial Banks companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.