Joseph F. Serbun - Mar 15, 2022 Form 4 Insider Report for COMMUNITY BANK SYSTEM, INC. (CBU)

Role: President, Retail Banking
Signature: /s/ Danielle M. Cima, pursuant to a Confirming Statement executed by Joseph F. Serbun
Stock symbol: CBU
Transactions as of: Mar 15, 2022
Transactions value $: $0
Form type: 4
Date filed: 3/16/2022, 05:21 PM
Previous filing: Mar 8, 2022
Next filing: Oct 14, 2022

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CBU	Common Stock	Award	$0	+724	+5.5%	$0.00	13.9K	Mar 15, 2022	Direct
holding	CBU	Common Stock						1.87K	Mar 15, 2022	By 401(k) Plan	F1

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
transaction	CBU	Stock Option	Award	$0	+2.91K		$0.00	2.91K	Mar 15, 2022	Common Stock	2.91K	$72.51	Direct	F2

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

Explanation of Responses:

Id	Content
F1	The number of shares reported herein acquired pursuant to Community Bank System, Inc.'s 401(k) Plan and are based on a current plan statement.
F2	The option vests ratably on March 15, 2023, 2024, 2025, 2026, and 2027.