Financial Institutions Inc.

FISI·NASDAQ·$36.22Share Price as of 11/2·$713MMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/03/26 10-QQ1 ended 03/31/2605/04/26 10-KFY 202503/09/26 10-QQ3 ended 09/30/2511/03/25 10-QQ2 ended 06/30/2508/04/25

Disclosures

8-KCurrent report10/29/26 8-KCurrent report09/08/26 8-KCurrent report08/26/26 8-KCurrent report07/23/26 8-KCurrent report05/21/26

Prospectuses and Registrations

424B3Prospectus02/17/26 S-4Registration (business combination)01/30/26 S-8Registration of securities for employees08/04/25 424B5Prospectus supplement12/12/24 424B5Prospectus supplement12/11/24

Proxies

DEF 14ADefinitive proxy04/06/26 DEFA14AAdditional proxy materials04/06/26 DEF 14ADefinitive proxy04/14/25 DEFA14AAdditional proxy materials04/14/25 DEF 14ADefinitive proxy04/12/24

Ownership

Form 4Insider transaction09/28/26 Form 4Insider transaction09/03/26 SC 13GBeneficial ownership07/14/26 Form 3Initial insider ownership05/21/26 Form 3Initial insider ownership05/21/26

Other

11-KEmployee stock purchase plan report06/18/26 ARSAnnual report to shareholders04/06/26 EFFECTRequest for effectiveness02/17/26 CORRESPCorrespondence with the SEC02/12/26 UPLOADLetter from the SEC02/05/26