Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0000950170-25-037918
Filing Date
2025-03-12
Accepted
2025-03-12 16:05:50
Documents
158
Period of Report
2024-12-31

Document Format Files

Seq Description Document Type Size
1 10-K fisi-20241231.htm   iXBRL 10-K 12113301
2 EX-19 fisi-ex19.htm EX-19 163825
3 EX-21 fisi-ex21.htm EX-21 16419
4 EX-23.1 fisi-ex23_1.htm EX-23.1 5473
5 EX-31.1 fisi-ex31_1.htm EX-31.1 15362
6 EX-31.2 fisi-ex31_2.htm EX-31.2 15351
7 EX-32 fisi-ex32.htm EX-32 14272
8 GRAPHIC img39886387_0.jpg GRAPHIC 323901
9 GRAPHIC img39886387_1.jpg GRAPHIC 244746
10 GRAPHIC img59657090_0.jpg GRAPHIC 16829
  Complete submission text file 0000950170-25-037918.txt   51272539

Data Files

Seq Description Document Type Size
11 XBRL TAXONOMY EXTENSION SCHEMA WITH EMBEDDED LINKBASES DOCUMENT fisi-20241231.xsd EX-101.SCH 3393592
161 EXTRACTED XBRL INSTANCE DOCUMENT fisi-20241231_htm.xml XML 14696008
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-K | Act: 34 | File No.: 000-26481 | Film No.: 25731750
SIC: 6021 National Commercial Banks
(CF Office: 02 Finance)