S&T Bancorp Chairman Christine J. Toretti To Resign, Effective September 28, 2025 To Take On US Ambassador To Sweden Job; Christopher J. McComish Elected Board Chairman

Christopher J. McComish Elected as Chairman of the Board; Jeffrey D. Grube Appointed as Lead Independent Director

INDIANA, Pa., Sept. 24, 2025 /PRNewswire/ -- S&T Bancorp, Inc. (S&T) (NASDAQ: STBA), the holding company for S&T Bank, today announced that Christine J. Toretti, chair of the board of directors of both S&T Bancorp, Inc. and S&T Bank since 2018, and a director since 1984, has notified the board of her intent to resign September 28 (the Effective Date) with respect to her appointment as ambassador to Sweden by the United States Senate.

Following Ms. Toretti's notification, the board approved combining the roles of the CEO and chair and appointing a lead independent director as of the Effective Date. The lead independent director will serve as liaison between the CEO and the independent directors, supervise various board operations and governance, fostering an effective, engaged and independent board culture, and ensure the board fulfills its oversight responsibilities.