Sec Form 4 Filing - MEH SUB LLC @ Mammoth Energy Services, Inc. - 2017-06-08

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person MEH SUB LLC 2. Issuer Name and Ticker or Trading Symbol Mammoth Energy Services, Inc. [ TUSK] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 411 WEST PUTNAM AVENUE, SUITE 125 3. Date of Earliest Transaction (MM/DD/YY) 06/08/2017 (Street) GREENWICH, CT06830 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Restricted Stock Units(1) 6,667 ( 1 ) I See Footnote ( 1 ) Common Stock, par value $0.01 06/08/2017 A 4,565,416 ( 2 ) A 25,009,319 D ( 3 ) ( 4 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other MEH SUB LLC 411 WEST PUTNAM AVENUE SUITE 125 GREENWICH, CT06830 X X WEXFORD CAPITAL LP 411 WEST PUTNAM AVENUE SUITE 125 GREENWICH, CT06830 X X Wexford GP LLC C/O WEXFORD CAPITAL LP SUITE 125 GREENWICH, CT06830 X DAVIDSON CHARLES E C/O WEXFORD CAPITAL LP 411 WEST PUTNAM AVE. GREENWICH, CT06830 X X JACOBS JOSEPH C/O WEXFORD CAPITAL LP 411 WEST PUTNAM AVENUE, SUITE 125 GREENWICH, CT06830 X Signatures Arthur Amron, Vice President and Assistant Secretary of Wexford GP LLC, the general partner of Wexford Capital LP 06/22/2017 Signature of Reporting Person Date Arthur Amron, Vice President and Assistant Secretary of Wexford GP LLC 06/22/2017 Signature of Reporting Person Date Charles E. Davidson 06/22/2017 Signature of Reporting Person Date Joseph M. Jacobs 06/22/2017 Signature of Reporting Person Date Arthur Amron, Vice President and Assistant Secretary of MEH SUB LLC 06/22/2017 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Marc McCarthy ("McCarthy"), a director of Mammoth Energy Services, Inc. (the "Issuer") and an employee of Wexford Capital LP ("Wexford") was granted 6,667 restricted stock units ("RSU's") under the Issuer's 2016 Equity Incentive Plan (the "Plan"), subject to the terms and conditions set forth in the Plan. 2,223 RSU's vested on the Closing Date of the IPO, and the remaining 4,444 RSU's will vest in two equal annual installments beginning on October 19, 2017. Each RSU represents a contingent right to receive one share of common stock of the Issuer. McCarthy reported the acquisition of the RSU's on a Form 4 filed on October 21, 2016 and indicated that these RSU's were assigned to Wexford under the terms of his employment with Wexford. The Reporting Persons are directors by deputization because McCarthy serves as a director of the issuer. ( 2 )The shares of common stock reported herein were issued to MEH Sub LLC ("MEH SUB") in exchange for MEH SUB's contribution of its membership interest in each of (1) Sturgeon Acquisitions LLC, a Delaware limited liability company; (2) Stingray Energy Services LLC, a Delaware limited liability company; and (3) Stingray Cementing LLC, a Delaware limited liability company. The issuance of the shares of common stock reported herein was approved by the board of directors of the Issuer in advance. ( 3 )The shares of common stock reported herein are held by MEH SUB. The shares of common stock previously reported as being held by Mammoth Energy Holding LLC were transferred to MEH SUB in an internal reorganization. This form is jointly filed by MEH SUB, Wexford, Wexford GP LLC ("Wexford GP"), Charles E. Davidson ("Davidson") and Joseph M. Jacobs ("Jacobs"). Wexford serves as manager to MEH SUB and as such may be deemed to share beneficial ownership of the common stock held by MEH, but disclaims such beneficial ownership to the extent such beneficial ownership exceeds its pecuniary interest. (*continued under Footnote (4) below). ( 4 )(*continued from Footnote (3) above) Wexford GP, as the general partner of Wexford, may be deemed to share beneficial ownership of the common stock held by MEH SUB, but disclaims such beneficial ownership to the extent such beneficial ownership exceeds its pecuniary interest. Messrs. Davidson and Jacobs, as the controlling persons of Wexford GP, may be deemed to share beneficial ownership of any common stock held by MEH SUB for which Wexford serves as manager, but disclaim such beneficial ownership to the extent such beneficial ownership exceeds their respective pecuniary interest therein.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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