X0306 4 2016-05-06 0000045876 HARSCO CORP HSC 0001635162 McKenzie Tracey L. 350 POPLAR CHURCH ROAD CAMP HILL PA 17011 false true false false SVP & CHRO Restricted Stock Unit 2016-05-06 4 A false 17143 0 A Common Stock 17143 17143 D Performance Share Unit 2016-05-06 4 A false 17143 0 A 2018-12-31 Common Stock 17143 17143 D Stock Appreciation Right 7 2016-05-06 4 A false 40956 0 A 2026-05-06 Common Stock 40956 40956 D Restricted stock units granted under the 2013 Equity and Incentive Compensation Plan represent a contingent right to receive Harsco common stock on a one-for-one basis when the restricted stock units vest. The restricted stock units vest in one-third increments on each of the first three anniversaries of the date of grant. Each performance share unit represents a contingent right to receive the equivalent of one share of Harsco common stock. The performance share units vest based on the total shareholder return of Harsco common stock relative to the S&P 600 Industrials Index. The performance share units vest on 12/31/2018. The stock appreciation rights vest in one-third increments on each of the first three anniversaries of the date of grant. /s/ Tracey L. McKenzie 2016-05-10