(a) Effective January 1, 2022, Community Bank System, Inc.'s Board of Directors appointed Eric E. Stickels as
Chair of the Board. Mr. Stickels has served as a director of the Company since 2015 and has over 35 years of
experience in the banking industry. He has served as the Chair of the Board's Trust and Financial Services
Committee and as a member of the Risk, Strategic/Executive, and Audit Committees.