Savneet Singh - 09 Sep 2026 Form 4 Insider Report for COMMUNITY FINANCIAL SYSTEM, INC. (CBU)

Reporting relationship: Director
Issuer ticker: CBU
Reported as of: 09 Sep 2026
Net transaction value: +$24,988
SEC form: 4
Accepted by SEC: 10 Sep 2026, 15:57:37 UTC
Prior SEC filing: 13 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Danielle M. Cima, pursuant to Confirming Statement executed by Savneet Singh

Key filing fact

Savneet Singh filed Form 4 for COMMUNITY FINANCIAL SYSTEM, INC. (CBU) on 10 Sep 2026.

Key facts

This page summarizes Savneet Singh's Form 4 filing for COMMUNITY FINANCIAL SYSTEM, INC. (CBU).
1 reported transaction and 2 derivative rows are listed below.
Accepted by SEC: 10 Sep 2026, 15:57.

Change

Previous filing in this sequence was filed on 13 May 2026.
Current net transaction value: +$24,988.

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 0001738659 Primary reporting owner

Singh Savneet

Relationship: Director
Address: C/O COMMUNITY FINANCIAL SYSTEM, INC., 333 BUTTERNUT DRIVE, SYRACUSE
Signature: /s/ Danielle M. Cima, pursuant to Confirming Statement executed by Savneet Singh
Signature date: 10 Sep 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

CBU transaction

Common Stock

Purchase

Transaction value: $24,988
Shares: +400
Change %: +2222%
Price: $62.47
Shares after: 418
Date: 09 Sep 2026
Ownership: Direct
Footnotes: F1

Reported derivative securities

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

CBU holding Derivative

Deferred Stock (Deferred Compensation)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 1,397
Date: 09 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,397
Exercise price
Footnotes: F2, F3

CBU holding Derivative

Phantom Stock (Deferred Stock Units)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 2,501
Date: 09 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 2,501
Exercise price
Footnotes: F4, F5

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 5 footnotes

Footnote F1

The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $62.41 to $62.53, inclusive. The reporting person undertakes to provide Community Financial System, Inc., any security holder of Community Financial System, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

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

Footnote F3

Includes 10.3606 and 9.7616 units of phantom stock acquired as dividend equivalents on April 10, 2026, and July 10, 2026, respectively, under the DCP for Directors.

Footnote F4

The reporting person has received deferred stock units under the Community Financial System, Inc. 2022 Long-Term Incentive Plan, as amended (the "LTIP"). 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 F5

Includes 9.4416 and 17.4825 units of phantom stock acquired on April 10, 2026, and July 10, 2026, respectively, under the LTIP's dividend reinvestment feature.