X0306 5 2020-12-31 0 0 0000719220 S&T BANCORP INC STBA 0001157921 KOCHVAR MARK 800 PHILADELPHIA STREET INDIANA PA 15701 1 SR EXEC VICE PRESIDENT & CFO Common Stock 2020-12-31 5 J 0 1043.9382 24.84 A 57187.9162 D Common Stock 2020-12-31 5 J 0 2605.7063 24.84 A 30561.4408 I 401-k Increase due to reinvested dividends in a dividend reinvestment plan. These shares represent the YTD increase in shares held in a 401K/IRA plan. /s/ Timothy P. McKee P.O.A. for Mark Kochvar 2021-02-11