Michael N. Abdo - 30 Jan 2026 Form 4 Insider Report for COMMUNITY FINANCIAL SYSTEM, INC. (CBU)

Reporting relationship: EVP and General Counsel
Issuer ticker: CBU
Reported as of: 30 Jan 2026
Net transaction value: -$23,130
SEC form: 4
Accepted by SEC: 03 Feb 2026, 16:05:46 UTC
Prior SEC filing: 19 Mar 2025
Next SEC filing: 04 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Danielle M. Cima, pursuant to a Confirming Statement executed by Michael N. Abdo

Key filing fact

Michael N. Abdo filed Form 4 for COMMUNITY FINANCIAL SYSTEM, INC. (CBU) on 03 Feb 2026.

Key facts

This page summarizes Michael N. Abdo's Form 4 filing for COMMUNITY FINANCIAL SYSTEM, INC. (CBU).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 03 Feb 2026, 16:05.

Change

Previous filing in this sequence was filed on 19 Mar 2025.
Current net transaction value: -$23,130.

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 0001933852 Primary reporting owner

Abdo Michael N

Relationship: EVP and General Counsel
Address: C/O COMMUNITY FINANCIAL SYSTEM, INC., 5790 WIDEWATER PARKWAY, DEWITT
Signature: /s/ Danielle M. Cima, pursuant to a Confirming Statement executed by Michael N. Abdo
Signature date: 03 Feb 2026

Reported non-derivative transactions

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

CBU transaction

Common Stock

Options Exercise

Transaction value: $86,952
Shares: +2,287
Change %: +34%
Price: $38.02
Shares after: 9,017
Date: 30 Jan 2026
Ownership: Direct

CBU transaction

Common Stock

Tax liability

Transaction value: $110,082
Shares: -1,763
Change %: -20%
Price: $62.44
Shares after: 7,254
Date: 30 Jan 2026
Ownership: Direct

CBU holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 2,710
Date: 30 Jan 2026
Ownership: By 401(K)
Footnotes: F1

Reported derivative securities

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

CBU transaction Derivative

Stock Option

Options Exercise

Transaction value: $0
Shares: -2,287
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 30 Jan 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 2,287
Exercise price: $38.02
Footnotes: F2

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

The number of shares reported herein were acquired pursuant to Community Financial System, Inc.'s 401(K) Plan and are based on a current plan statement.

Footnote F2

The option vested ratably on March 16, 2017, 2018, 2019, 2020, and 2021.