Deresa Fischer Durkee - 03 Mar 2025 Form 4 Insider Report for COMMUNITY FINANCIAL SYSTEM, INC. (CBU)

Role: SVP, Chief Accounting Officer
Signature: /s/ Danielle M. Cima, pursuant to a Confirming Statement executed by Deresa F. Durkee
Issuer symbol: CBU
Transactions as of: 03 Mar 2025
Net transactions value: -$20,633
Form type: 4
Filing time: 04 Mar 2025, 12:52:05 UTC
Previous filing: 15 Nov 2024
Next filing: 19 Mar 2025
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CBU	Common Stock	Tax liability	$20,633	-326	-6.5%	$63.29	4,655	03 Mar 2025	Direct	F1
holding	CBU	Common Stock						267	03 Mar 2025	By 401(k)	F2
holding	CBU	Common Stock						218	03 Mar 2025	By spouse

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

Explanation of Responses:

Id	Content
F1	Payment of tax liability associated with vesting of restricted stock award.
F2	The number of shares reported herein acquired pursuant to Community Financial System, Inc.'s 401(k) Plan and are based on a current plan statement.