Michael N. Abdo - 04 Mar 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
04 Mar 2026
Net transactions value
$0
Form type
4
Filing time
06 Mar 2026, 14:09:18 UTC
Previous filing
04 Mar 2026
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., 333 BUTTERNUT DRIVE, SYRACUSE /s/ Danielle M. Cima, pursuant to a Confirming Statement executed by Michael N. Abdo 06 Mar 2026 0001933852

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CBU Common Stock Award +1,948 +29% $0.000000* 8,717 04 Mar 2026 Direct F1
transaction CBU Common Stock Tax liability -707 -8.1% $59.87* 8,010 04 Mar 2026 Direct F2
holding CBU Common Stock 2,731 04 Mar 2026 By 401(K) F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 On March 4, 2026, the Compensation Committee approved the vesting of the three-year performance-based restricted stock award, granted to the reporting person in 2023, based on achievement of predetermined performance criteria at the target level. The reporting person received 1,752 shares of common stock under the award and 196.2353 shares of common stock acquired under the dividend reinvestment feature of the Community Financial System, Inc. 2022 Long-Term Incentive Plan, as amended (the "Plan").
F2 Payment of tax liability associated with vesting of performance stock award.
F3 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.