John F. Whipple - 17 Mar 2026 Form 4 Insider Report for COMMUNITY FINANCIAL SYSTEM, INC. (CBU)

Reporting relationship: Director
Issuer ticker: CBU
Reported as of: 17 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 18 Mar 2026, 13:23:36 UTC
Prior SEC filing: 06 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Danielle M. Cima, pursuant to a Confirming Statement executed by John F. Whipple, Jr.

Key filing fact

John F. Whipple filed Form 4 for COMMUNITY FINANCIAL SYSTEM, INC. (CBU) on 18 Mar 2026.

Key facts

This page summarizes John F. Whipple's Form 4 filing for COMMUNITY FINANCIAL SYSTEM, INC. (CBU).
1 reported transaction and 2 derivative rows are listed below.
Accepted by SEC: 18 Mar 2026, 13:23.

Change

Previous filing in this sequence was filed on 06 Feb 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001485739 Primary reporting owner

Whipple John F.

Relationship: Director
Address: C/O COMMUNITY FINANCIAL SYSTEM, INC., 5790 WIDEWATERS PARKWAY, DEWITT
Signature: /s/ Danielle M. Cima, pursuant to a Confirming Statement executed by John F. Whipple, Jr.
Signature date: 18 Mar 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

CBU transaction Derivative

Phantom Stock (Deferred Stock Units)

Award

Transaction value
Shares: +1,220
Change %: +23%
Price: $0.000000^*
Shares after: 6,633
Date: 17 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,220
Exercise price: $0.000000
Footnotes: F3, F4

CBU holding Derivative

Phantom Stock (Deferred Compensation)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 5,751
Date: 17 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 5,751
Exercise price
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

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 ("DCP for Directors") will be settled in Community Financial System, Inc. common stock at future dates selected by the reporting person.

Footnote F2

Includes 44.0422 units of phantom stock acquired on January 12, 2026 as dividend equivalents under the DCP for Directors.

Footnote F3

The reporting person has received deferred stock units under the Community Financial System, Inc. 2022 Long-Term Incentive Plan, as amended (the "Plan"). Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Financial System, Inc. common stock and will be settled in common stock at a predetermined date.

Footnote F4

Includes 35.9672, 40.8617, 45.1866, and 41.4544 units of phantom stock acquired on April 10, 2025, July 10, 2025, October 10, 2025, and January 12, 2026, respectively, as dividend equivalents under the Plan.