X0306 4 2020-04-24 0 0001680247 ProPetro Holding Corp. PUMP 0001235129 MOORE JACK B 1706 S. MIDKIFF MIDLAND TX 79701 1 0 0 0 Restricted Stock Units 2020-04-24 4 A 0 32336 0 A Common Stock 32336 40214 D Each restricted stock unit ("RSU") represents a contingent right to receive either one share of common stock of the Issuer ("Common Stock") or an amount of cash equal to the fair market value of one share of Common Stock. The RSUs will vest in full upon the earlier to occur of the day immediately preceding the Issuer's annual meeting of the stockholders in 2021 and April 24, 2021. /s/ Samuel D. Sledge, as attorney-in-fact for Jack B. Moore 2020-04-28