Filing Details

This Amendment No. 1 (this "Amendment") modifies and supplements the 13G initially filed on February 8, 2017 (the "Statement"), with respect to common stock, $0.01 par value per share (the "Common Stock"), of Mammoth Energy Services, Inc., a Delaware corporation (the "Company"). Except to the extent supplemented by the information contained in this Amendment, the Statement, as amended as provided herein, remains in full force and effect. Capitalized terms used herein without definition have the respective meanings ascribed to them in the Statement.

Items 1(b), 2(a), 2(c), 4 and 10 should be deleted in their entirety and replaced with the following:

 

(b)

Address of Issuer's Principal Executive Offices:

14201 Caliber Drive, Suite 300

Oklahoma City, Oklahoma 73134

Item 2.

(a)

Name of Persons Filing (collectively, the "Reporting Persons"):

(i)	MEH SUB LLC1

(ii)	Wexford Capital LP

(iii)

Wexford GP LLC

(iv)	Charles E. Davidson

(v)	Joseph M. Jacobs

(c)

Citizenship:

(i)	MEH SUB LLC – Delaware

(ii)	Wexford Capital LP – Delaware

(iii)

Wexford GP LLC  - Delaware

(iv)	Charles E. Davidson - United States

(v)	Joseph M. Jacobs – United States

Item 4.

Ownership

Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1. Information set forth below is on the basis of 44,502,223 shares of common stock issued and outstanding as of November 7, 2017, as reported by the Issuer in the Form 10-Q filed by the Issuer with the Securities and Exchange Commission on November 14, 2017, increased, to the extent applicable, for each Reporting Person to reflect the vested restricted stock units beneficially owned by such Reporting Person.

(i) MEH SUB LLC

(a)

Amount beneficially owned: 25,009,319

(b)

Percent of class: 56.20%

(c)

Number of shares to which the person has: 25,009,319

(i)

Sole power to vote or to direct the vote: 0

(ii)

Shared power to vote or to direct the vote: 25,009,319

(iii)

Sole power to dispose or to direct the disposition of: 0

(iv)

Shared power to dispose or to direct the disposition of:  25,009,319

(ii) Wexford Capital LP

(a)

Amount beneficially owned: 25,013,764

(b)

Percent of class: 56.20%

(c)

Number of shares to which the person has:

(i)

Sole power to vote or to direct the vote: 0

(ii)

Shared power to vote or to direct the vote: 25,013,764

(iii)

Sole power to dispose or to direct the disposition of: 0

(iv)

Shared power to dispose or to direct the disposition of: 25,013,764

(iii) Wexford GP LLC

(a)

Amount beneficially owned: 25,013,764

(b)

Percent of class: 56.20%

(c)

Number of shares to which the person has:

(i)

Sole power to vote or to direct the vote: 0

(ii)

Shared power to vote or to direct the vote: 25,013,764

(iii)

Sole power to dispose or to direct the disposition of: 0

(iv)	Shared power to dispose or to direct the disposition of: 25,013,764

(iv) Charles E. Davidson

(a)

Amount beneficially owned: 25,013,764

(b)

Percent of class: 56.20%

(c)

Number of shares to which the person has:

(i)

Sole power to vote or to direct the vote: 0

(ii)

Shared power to vote or to direct the vote: 25,013,764

(iii)

Sole power to dispose or to direct the disposition of: 0

(iv)

Shared power to dispose or to direct the disposition of: 25,013,764

(v) Joseph M. Jacobs

(a)

Amount beneficially owned: 25,013,764

(b)

Percent of class: 56.20%

(c)

Number of shares to which the person has:

(i)

Sole power to vote or to direct the vote: 0

(ii)

Shared power to vote or to direct the vote: 25,013,764

(iii)

Sole power to dispose or to direct the disposition of: 0

(iv)

Shared power to dispose or to direct the disposition of: 25,013,764

Wexford Capital LP ("Wexford Capital") may, by reason of its status as manager of MEH SUB LLC ("MEH"), be deemed to own beneficially the securities of which MEH possesses beneficial ownership. Wexford GP LLC ("Wexford GP") may, as the General Partner of Wexford Capital, be deemed to own beneficially the securities of which MEH possesses beneficial ownership. Each of Charles E. Davidson ("Davidson") and Joseph M. Jacobs ("Jacobs") may, by reason of his status as a controlling person of Wexford GP, be deemed to own beneficially the securities of which MEH possesses beneficial ownership. Each of Wexford Capital, Wexford GP, Davidson and Jacobs share the power to vote and to dispose of the securities beneficially owned by MEH.  Each of Wexford Capital, Wexford GP, Davidson and Jacobs disclaim beneficial ownership of the securities owned by MEH and this report shall not be deemed as an admission that they are the beneficial owners of such securities except, in the case of Davidson and Jacobs, to the extent of their respective interests in the members of MEH.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.