UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(AMENDMENT NO. 2)

(Name of Issuer)

Common Stock, $0.01 par value

__________________________

(Title of Class of Securities)

56155L108

______________________________________________

(CUSIP Number)

(Date of Event which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

£	Rule 13d-1(b)

£	Rule 13d-1(c)

☑	Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

This Amendment No. 2 (this "Amendment") modifies and supplements the 13G initially filed on February 8, 2017, as amended by Amendment No. 1 filed on February 14, 2018 (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.

Item  4 should be deleted in its entirety and replaced with the following:

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 44,876,649 shares of common stock issued and outstanding as of December 31, 2018, as reported to us directly by the Issuer.

(i) MEH SUB LLC

(a)

Amount beneficially owned: 21,978,893

(b)

Percent of class: 48.98%

(c)

Number of shares to which the person has: 21,978,893

(i)

Sole power to vote or to direct the vote: 0

(ii)

Shared power to vote or to direct the vote: 21,978,893

(iii)

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

(iv)

Shared power to dispose or to direct the disposition of:  21,978,893

(ii) Wexford Capital LP

(a)

Amount beneficially owned: 21,988,473

(b)

Percent of class: 49.00%

(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: 21,988,473

(iii)

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

(iv)

Shared power to dispose or to direct the disposition of: 21,988,473

(iii) Wexford GP LLC

(a)

Amount beneficially owned: 21,988,473

(b)

Percent of class: 49.00%

(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: 21,988,473

(iii)

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

(iv)	Shared power to dispose or to direct the disposition of: 21,988,473

(iv) Charles E. Davidson

(a)

Amount beneficially owned: 21,988,473

(b)

Percent of class: 49.00%

(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: 21,988,473

(iii)

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

(iv)

Shared power to dispose or to direct the disposition of: 21,988,473

(v) Joseph M. Jacobs

(a)

Amount beneficially owned: 21,988,473

(b)

Percent of class: 49.00%

(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: 21,988,473

(iii)

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

(iv)

Shared power to dispose or to direct the disposition of: 21,988,473

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.