# Filing Detail

Form 10-Q - Quarterly report [Sections 13 or 15(d)]:
SEC Accession No. 0001193125-25-262535
Filing Date
2025-11-03
Accepted
2025-11-03 16:06:40
Documents
107
Period of Report
2025-09-30

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | 10-Q | fisi-20250930.htm iXBRL | 10-Q | 10988408
2 | EX-31.1 | fisi-ex31_1.htm | EX-31.1 | 16382
3 | EX-31.2 | fisi-ex31_2.htm | EX-31.2 | 16353
4 | EX-32 | fisi-ex32.htm | EX-32 | 22046
5 | GRAPHIC | img40786843_0.jpg | GRAPHIC | 323901
| Complete submission text file | 0001193125-25-262535.txt |  | 42753426

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
6 | XBRL TAXONOMY EXTENSION SCHEMA WITH EMBEDDED LINKBASES DOCUMENT | fisi-20250930.xsd | EX-101.SCH | 2120252
109 | EXTRACTED XBRL INSTANCE DOCUMENT | fisi-20250930_htm.xml | XML | 13015375

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: 10-Q | Act: 34 | File No.: 000-26481 | Film No.: 251444099
SIC: 6021 National Commercial Banks
(CF Office: 02 Finance)