X0306 4 2022-06-13 0001679268 MAMMOTH ENERGY SERVICES, INC. TUSK 0001048462 WEXFORD CAPITAL LP 777 SOUTH FLAGLER DRIVE, SUITE 602 EAST WEST PALM BEACH FL 33401 true true 0001472112 Wexford GP LLC C/O WEXFORD CAPITAL LP 777 SOUTH FLAGLER DRIVE, SUITE 602 EAST WEST PALM BEACH FL 44302 true true 0001001391 DAVIDSON CHARLES E C/O WEXFORD CAPITAL LP 777 SOUTH FLAGLER DRIVE, SUITE 602 EAST WEST PALM BEACH FL 33401 true true 0001048485 JACOBS JOSEPH C/O WEXFORD CAPITAL LP 777 SOUTH FLAGLER DRIVE, SUITE 602 EAST WEST PALM BEACH FL 33401 true true Common Stock 2022-06-13 4 P 0 25102 2.3505 A 22363043 I See footnotes Common Stock 2022-06-14 4 P 0 20600 2.2799 A 22383643 I See footnotes Common Stock 2022-06-15 4 P 0 5100 2.2309 A 22388743 I See footnotes Represents a weighted average price. These shares of common stock were purchased in multiple transactions at prices ranging from $2.2638 to $2.2969, inclusive. The Reporting Persons, as defined below, undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth herein. Represents a weighted average price. These shares of common stock were purchased in multiple transactions at prices ranging from $2.2292 to $2.2326, inclusive. The Reporting Persons, as defined below, undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth herein Wexford Capital LP ("Wexford Capital") may, by reason of its status as (i) sub-advisor of each of Wexford Spectrum Trading Limited ("WST") and Wexford Catalyst Trading Limited ("WCT") and (ii) manager of each of Wexford Focused Investors LLC ("WFI") and MEH SUB LLC ("MEH", and together with WST, WCT and WFI, the "Wexford Entities"), be deemed to own beneficially the securities held by the Wexford Entities. Wexford GP LLC ("Wexford GP") may, as the General Partner of Wexford Capital, be deemed to own beneficially the securities held by the Wexford Entities. Each of Charles E. Davidson ("Davidson") and Joseph M. Jacobs ("Jacobs", and together with the Wexford Entities, Wexford Capital, Wexford GP and Davidson, the "Reporting Persons") may, by reason of his status as a controlling person of Wexford GP, be deemed to own beneficially the securities held by the Wexford Entities. Each of Wexford Capital, Wexford GP, Davidson and Jacobs share the power to vote and to dispose of the securities held by the Wexford Entities. Each of Wexford Capital, Wexford GP, Davidson and Jacobs disclaim beneficial ownership of the securities held by the Wexford Entities and this report shall not be deemed as an admission that they are the beneficial owners of such securities, except to the extent of any pecuniary interests therein. The Reporting Persons may be deemed to be directors by deputization by virtue of Paul Jacobi and Arthur Amron, each an employee of Wexford Capital, serving as directors of the Issuer. Wexford Capital LP, By: Wexford GP LLC, its general partner, By: Arthur Amron, Vice President and Assistant Secretary 2022-06-15 Wexford GP LLC, By: Arthur Amron, Vice President and Assistant Secretary 2022-06-15 Charles E. Davidson 2022-06-15 Joseph M. Jacobs 2022-06-15