Martin Kearney Birmingham - 05 Mar 2026 Form 4 Insider Report for FINANCIAL INSTITUTIONS INC (FISI)

Role: President & CEO
Signature: SANDRA L. BYERS By Power of Attorney from Martin K. Birminghman
Issuer symbol: FISI
Transactions as of: 05 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 06 Mar 2026, 16:05:07 UTC
Previous filing: 09 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
BIRMINGHAM MARTIN KEARNEY	President & CEO	220 LIBERTY STREET, WARSAW	SANDRA L. BYERS By Power of Attorney from Martin K. Birminghman	06 Mar 2026	0001323659

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	FISI	Common Stock						130,797	05 Mar 2026	Direct
holding	FISI	Common Stock						7,500	05 Mar 2026	Held in IRA
holding	FISI	Common Stock						15,042	05 Mar 2026	Held in 401K Plan

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
holding	FISI	Restricted Stock Units						0	05 Mar 2026	Restricted Stock Units	8,861		Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Each restricted stock unit represents a contingent right to receive one share of FISI common stock.