Filing Details

The Reporting Persons named in Item 2 below are hereby jointly filing this Schedule 13G (this "Statement") because due to certain affiliates and relationships among the Reporting Persons, such Reporting Persons may be deemed to beneficially own the same securities directly acquired from the Issuer named in Item 1 below by one of the  Reporting Persons.  In accordance with Rule 13d-1(k)(1)(iii) promulgated pursuant to the Securities Exchange Act of 1934, as amended (the "Exchange Act"), the reporting persons named in Item 2 below have executed a written agreement relating to the joint filing of this Schedule 13G (the "Joint Filing Agreement"), a copy of which is annexed hereto as Exhibit I.

Item 1.

(a)

Name of Issuer:

Mammoth Energy Services, Inc.

(b)

Address of Issuer's Principal Executive Offices:

4727 Gaillardia Parkway, Suite 200

Oklahoma City, Oklahoma 73142

Item 2.

(a)

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

(i)	Mammoth Energy Holdings LLC

(ii)	Wexford Capital LP

(iii)

Wexford GP LLC

(iv)	Charles E. Davidson

(v)	Joseph M. Jacobs

(b)

Address of Principal Business Office, or, if none, Residence of Reporting Persons:

411 West Putnam Avenue, Suite 125

Greenwich, Connecticut 06830

(c)

Citizenship:

(i)	Mammoth Energy Holdings LLC – Delaware

(ii)	Wexford Capital LP – Delaware

(iii)

Wexford GP LLC  - Delaware

(iv)	Charles E. Davidson - United States

(v)	Joseph M. Jacobs – United States

(d)

Title of Class of Securities:

Common Stock, $0.01 par value

(e)

CUSIP Number:

 56155L108

Item 3.

If this statement is filed pursuant to §§240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a: N/A

(a)

£

Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).

(b)

£

Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

(c)

£

Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).

(d)

£

Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C 80a-8).

(e)

£

An investment adviser in accordance with §240.13d-1(b)(1)(ii)(E);

(f)

£

An employee benefit plan or endowment fund in accordance with §240.13d-1(b)(1)(ii)(F);

(g)

£

A parent holding company or control person in accordance with §240.13d-1(b)(1)(ii)(G);

(h)

£

A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i)

£

A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j)

£

Group, in accordance with §240.13d-1(b)(1)(ii)(J).

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  37,500,000 shares of common stock issued and outstanding as of November 7, 2016, as reported by the Issuer in the Form 10-Q filed by the Issuer with the Securities and Exchange Commission on November 10, 2016.]

(i) Mammoth Energy Holdings LLC

(a)

Amount beneficially owned: 20,443,903

(b)

Percent of class: 54.52%

(c)

Number of shares to which the person has: 20,443,903

(i)

Sole power to vote or to direct the vote: 0

(ii)

Shared power to vote or to direct the vote: 20,443,903

(iii)

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

(iv)

Shared power to dispose or to direct the disposition of:  20,443,903

(ii) Wexford Capital LP

(a)

Amount beneficially owned: 20,446,126

(b)

Percent of class: 54.52 %

(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: 20,446,126

(iii)

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

(iv)

Shared power to dispose or to direct the disposition of: 20,446,126

(iii) Wexford GP LLC

(a)

Amount beneficially owned: 20,446,126

(b)

Percent of class: 54.52%

(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: 20,446,126

(iii)

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

(iv)	Shared power to dispose or to direct the disposition of: 20,446,126

(iv) Charles E. Davidson

(a)

Amount beneficially owned: 20,446,126

(b)

Percent of class: 54.52%

(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: 20,446,126

(iii)

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

(iv)

Shared power to dispose or to direct the disposition of: 20,446,126

(v) Joseph M. Jacobs

(a)

Amount beneficially owned: 20,446,126

(b)

Percent of class: 54.52%

(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: 20,446,126

(iii)

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

(iv)

Shared power to dispose or to direct the disposition of: 20,446,126

Wexford Capital LP ("Wexford Capital") may, by reason of its status as manager of Mammoth Energy Holdings 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.

Item 5.

Ownership of Five Percent or Less of a Class

If this statement is being filed to report the fact that as of the date hereof the reporting persons have ceased to be the beneficial owner of more than five percent of the class of securities, check the following  ☐.

Item 6.

Ownership of More than Five Percent on Behalf of Another Person N/A.

Item 7.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company N/A

Item 8.

Identification and Classification of Members of the Group N/A

Item 9.

Notice of Dissolution of Group N/A

Item 10.

Certification

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

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.

EXHIBIT 1

JOINT FILING AGREEMENT

Pursuant to Rule 13d-1(k)(1)(iii) of the Securities Exchange Act of 1934, each of the undersigned agrees that a single joint Schedule 13G and any amendments thereto may be filed on behalf of each of the undersigned with respect to the securities held by each of them in Mammoth Energy Services, Inc.