X0306 4 2016-10-19 0 0001679268 Mammoth Energy Services, Inc. TUSK 0001450919 Straehla Arty 4727 GAILLARDIA PARKWAY, SUITE 200 OKLAHOMA CITY OK 73142 1 1 0 0 Chief Executive Officer Common Stock 2016-10-19 4 P 0 666 15.00 A 666 I As custodian for grandchild's UTMA account Common Stock 2016-10-19 4 P 0 666 15.00 A 1332 I As custodian for grandchild's UTMA account Common Stock 2016-10-19 4 A 0 250000 0.00 A 251332 D These shares of common stock, par value $0.01 per share (the "Common Stock"), of Mammoth Energy Services, Inc. (the "Issuer") were purchased under the directed share program in connection with the Issuer's initial public offering (the "IPO"). The underwriters reserved for sale at the IPO price up to 5% of the Common Stock being offered in the IPO for sale to the Issuer's employees, executive officers, directors, business associates and related persons at the public offering price. Shares of Common Stock bought by the reporting person in the directed share program are subject to a lock-up agreement entered into by the reporting person in connection with the IPO. The shares are held in a custodial account for the benefit of two of Mr. Straehla's grandchildren. Mr. Straehla maintains investment control over the account. These securities are restricted stock units that were granted under the Issuer's 2016 Equity Incentive Plan. All of these units will vest in three substantially equal installments beginning on October 19, 2017. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer. Exhibit 24 - Power of Attorney /s/ Mark Layton as attorney-in-fact for Arty Straehla 2016-10-21