John F. Whipple - 01 Dec 2025 Form 4 Insider Report for COMMUNITY FINANCIAL SYSTEM, INC. (CBU)

Role
Director
Signature
/s/ Danielle M. Cima, pursuant to a Confirming Statement executed by John F. Whipple, Jr.
Issuer symbol
CBU
Transactions as of
01 Dec 2025
Net transactions value
$0
Form type
4
Filing time
03 Dec 2025, 11:12:05 UTC
Previous filing
20 Mar 2025
Next filing
06 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Whipple John F. Director C/O COMMUNITY FINANCIAL SYSTEM, INC., 5790 WIDEWATERS PARKWAY, DEWITT /s/ Danielle M. Cima, pursuant to a Confirming Statement executed by John F. Whipple, Jr. 03 Dec 2025 0001485739

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CBU Common Stock Options Exercise +1,370 +19% 8,506 01 Dec 2025 Direct 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 Phantom Stock (Deferred Compensation) Options Exercise -1,370 -19% 5,707 01 Dec 2025 Common Stock 1,370 Direct F1, F2, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 On December 1, 2025, the reporting person's phantom stock units were settled for 1,370 shares of Community Financial System, Inc. common stock.
F2 Each unit of phantom stock is the economic equivalent of one share of Community Financial System, Inc. common stock. The units of phantom stock relating to the Deferred Compensation Plan will be settled in Community Financial System, Inc. common stock at future dates selected by the reporting person.
F3 Includes 53.6874, 61.6877, 53.8395, and 59.5376 units of phantom stock acquired on January 10, 2025, April 10, 2025, July 10, 2025, and October 10, 2025, respectively, as dividend equivalents under the Plan.