X0306 4 2016-11-07 0 0001679268 Mammoth Energy Services, Inc. TUSK 0001689613 Ross Matthew 4727 GAILLARDIA PARKWAY, SUITE 200 OKLAHOMA CITY OK 73412 1 0 0 0 Common Stock 2016-11-07 4 A 0 6667 0.00 A 6667 D These securities are restricted stock units that were granted under the issuer's 2016 Equity Incentive Plan. 2,223 of these restricted stock units vested on November 7, 2016, and the remaining 4,444 restricted stock units will vest in two equal annual installments beginning on October 19, 2017. Each restricted stock unit represents a contingent right to receive one share of common stock, par value $0.01 per share, of the issuer. /s/ Mark Layton as attorney-in-fact for Matthew Ross 2016-11-09