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

Mar 17, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: COMMUNITY BANK SYSTEM, INC. (CBU)
CIK: 0000723188
Period of Report: 2021-03-16

Reporting Person: Fesette Neil E. (Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-03-16	Phantom Stock (Deferred Stock Units)	$	A	569	Acquired		Common Stock (569)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	7157.7738	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Phantom Stock (Deferred Compensation)	$		Common Stock (7332.9337)	7332.9337	Direct

Footnotes

F1: Includes 127.113 shares acquired pursuant to the Community Bank System, Inc. Dividend Reinvestment Plan.

F2: The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan. Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date.

F3: Includes 17.7946 units of phantom stock acquired on January 11, 2021, as dividend equivalents under the 2014 Long-Term Incentive Compensation Program.

F4: Each unit of phantom stock is the economic equivalent of one share of Community Bank System, Inc. common stock. The units of phantom stock relating to the Deferred Compensation Plan will be settled in Community Bank System, Inc. common stock at future dates selected by the reporting person.

F5: Includes 45.4586 units of phantom stock acquired on January 11, 2021, under the Deferred Compensation Plan's dividend reinvestment feature.