# Filing Detail

Form 8-K - Current report:
SEC Accession No. 0001193125-25-248744
Filing Date
2025-10-23
Accepted
2025-10-23 16:06:27
Documents
13
Period of Report
2025-09-30
Items
Item 2.02: Results of Operations and Financial Condition
Item 7.01: Regulation FD Disclosure
Item 9.01: Financial Statements and Exhibits

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | 8-K | fisi-20250930.htm iXBRL | 8-K | 56505
2 | EX-99.1 | fisi-ex99_1.htm | EX-99.1 | 2199531
3 | GRAPHIC | img40786843_0.jpg | GRAPHIC | 323901
4 | GRAPHIC | img145321324_0.jpg | GRAPHIC | 323901
| Complete submission text file | 0001193125-25-248744.txt |  | 3605436

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
5 | XBRL TAXONOMY EXTENSION SCHEMA WITH EMBEDDED LINKBASES DOCUMENT | fisi-20250930.xsd | EX-101.SCH | 25063
15 | EXTRACTED XBRL INSTANCE DOCUMENT | fisi-20250930_htm.xml | XML | 4750

Mailing Address 220 LIBERTY STREET WARSAW NY 14569
Business Address 220 LIBERTY STREET WARSAW NY 14569 5857861100
FINANCIAL INSTITUTIONS INC (Filer) CIK: 0000862831 (see all company filings)

EIN.: 160816610 | State of Incorp.: NY | Fiscal Year End: 1231
Type: 8-K | Act: 34 | File No.: 000-26481 | Film No.: 251413075
SIC: 6021 National Commercial Banks
(CF Office: 02 Finance)