InsiderTrades

Form 4 for CBU COMMUNITY FINANCIAL SYSTEM, INC.

Accepted 2026-03-06 00:00:00 ET · period of report 2026-03-04 · accession 0000723188-26-000040 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X Filed Traded Ticker Insider Title Type Price Qty Owned ΔOwn Value
2026-03-06 2026-03-04 CBU Gillan-Myer Maureen A EVP, Chief Admin, HR Off F - Tax $59.87 -943.06 6,647 -12% -$56.5K
2026-03-06 2026-03-04 CBU Gillan-Myer Maureen A EVP, Chief Admin, HR Off A - Grant $0.00 +2,562 7,590 +51% $0

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2026-03-04 F D 943.06 $59.87 6,647 D — —
2 Common Common Stock 2026-03-04 A A 2,562.06 $0.00 7,590.06 D — — (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 2,304 shares of common stock under the award and 258.0628 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").