X0306 4 2017-08-24 0 0001679268 MAMMOTH ENERGY SERVICES, INC. TUSK 0001346557 Palm James D 14201 CALIBER DRIVE SUITE 300 OKLAHOMA CITY OK 73134 1 0 0 0 Common Stock 2017-08-24 4 P 0 4000 12.8307 A 10700 D Common Stock 2017-08-25 4 P 0 2000 12.60 A 12700 D These securities are held jointly with the reporting person's spouse. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $12.72 to $12.92 per share, inclusive. The reporting person undertakes to provide to Mammoth Energy Services, Inc., any security holder of Mammoth Energy Services, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in footnotes 1 and 2. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $12.45 to $12.75 per share, inclusive. /s/ Mark Layton as attorney-in-fact for James D. Palm 2017-08-28