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

Role
EVP and General Counsel
Signature
/s/ Danielle M. Cima, pursuant to a Confirming Statement executed by Michael N. Abdo
Issuer symbol
CBU
Transactions as of
30 Jan 2026
Net transactions value
-$23,130
Form type
4
Filing time
03 Feb 2026, 16:05:46 UTC
Previous filing
19 Mar 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Abdo Michael N EVP and General Counsel C/O COMMUNITY FINANCIAL SYSTEM, INC., 5790 WIDEWATER PARKWAY, DEWITT /s/ Danielle M. Cima, pursuant to a Confirming Statement executed by Michael N. Abdo 03 Feb 2026 0001933852

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CBU Common Stock Options Exercise $86,952 +2,287 +34% $38.02 9,017 30 Jan 2026 Direct
transaction CBU Common Stock Tax liability $110,082 -1,763 -20% $62.44 7,254 30 Jan 2026 Direct
holding CBU Common Stock 2,710 30 Jan 2026 By 401(K) 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 Stock Option Options Exercise $0 -2,287 -100% $0.000000 0 30 Jan 2026 Common Stock 2,287 $38.02 Direct F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
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.
F2 The option vested ratably on March 16, 2017, 2018, 2019, 2020, and 2021.