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)