Laurie R. Collins - 05 Mar 2026 Form 4 Insider Report for FINANCIAL INSTITUTIONS INC (FISI)

Role: Chief Human Resources Officer
Signature: SANDRA L. BYERS By Power of Attorney from Laurie R. Collins
Issuer symbol: FISI
Transactions as of: 05 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 06 Mar 2026, 16:05:05 UTC
Previous filing: 09 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Collins Laurie R	Chief Human Resources Officer	220 LIBERTY STREET, WARSAW	SANDRA L. BYERS By Power of Attorney from Laurie R. Collins	06 Mar 2026	0001876993

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	FISI	Common Stock						6,227	05 Mar 2026	Direct
holding	FISI	Common Stock						726	05 Mar 2026	Held in 401K

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	1,865		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.