X0306 4 2017-03-20 0000719220 S&T BANCORP INC STBA 0001164377 ANTOLIK DAVID G 800 PHILADELPHIA STREET INDIANA PA 15701 1 SR EXECUTIVE VICE PRESIDENT Common Stock 2017-03-20 4 A 0 3658 35.57 A 26861 D Common Stock 7709.657 I 401k On March 20, 2017, the Registrant's board of directors approved the grant of restricted stock under the S&T Bancorp, Inc. 2014 Incentive Plan for an incentive under the 2017 S&T Bancorp, Inc. Long Term Incentive Plan. The actual number of shares granted and communicated to the Reporting Person was determined based on the target incentive payout as a percentage of the Reporting Person's base salary on the grant date divided by the average of the high and low prices of S&T Bancorp, Inc. common stock over the 10-day trading period ending on the grant date. One-half of the shares will be earned based on remaining with S&T for three years. The other half will be earned based on S&T's Return on Average Equity and Cumulative Total Shareholder Return performance over a three year period. /s/ Timothy P. McKee P.O.A. for David G. Antolik 2017-03-21