Michael N. Abdo - 07 Mar 2024 Form 4 Insider Report for COMMUNITY BANK SYSTEM, INC. (CBU)

Role: EVP and General Counsel
Signature: /s/ Danielle M. Cima, pursuant to a Confirming Statement executed by Michael N. Abdo
Issuer symbol: CBU
Transactions as of: 07 Mar 2024
Net transactions value: +$26,439
Form type: 4
Filing time: 11 Mar 2024, 14:19:27 UTC
Previous filing: 05 Mar 2024
Next filing: 20 Mar 2024
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CBU	Common Stock	Options Exercise	$26,439	+700	+22%	$37.77	3,833	07 Mar 2024	Direct
holding	CBU	Common Stock						1,597	07 Mar 2024	By 401(K)

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	Options Exercise	$0	-700	-100%	$0.000000^*	0	07 Mar 2024	Common Stock	700	$37.77	Direct	F1

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

Explanation of Responses:

Id	Content
F1	The option vested ratably on March 19, 2015, 2016, 2017, 2018, and 2019.