John A. Vaccaro's Ownership in Community Financial System, Inc.

John A. Vaccaro, a director of Community Financial System, Inc., reported ownership of 175 shares of common stock as of October 1, 2025. The filing, submitted under Form 3, indicates direct ownership of the shares. The report was signed by Danielle M. Cima, attorney-in-fact for John A. Vaccaro. This filing provides transparency regarding the ownership stakes of key individuals within the company.