COMMUNITY FINANCIAL SYSTEM, INC. — Director's Dealing 2021

Feb 17, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: COMMUNITY BANK SYSTEM, INC. (CBU)
CIK: 0000723188
Period of Report: 2021-02-16

Reporting Person: TRYNISKI MARK E (Director, President & CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-02-16	Common Stock	M	18026	$37.77	Acquired	68939	Direct
2021-02-16	Common Stock	F	12563	$70.32	Disposed	56376	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-02-16	Stock Option	$37.77	M	18026	Disposed	2024-03-19	Common Stock (18026)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	19215.8838	Indirect
Common Stock	98512	Indirect

Footnotes

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