FORM 5 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). Form 3 Holdings Reported Form 4 Transactions Reported

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ANNUAL STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 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 * GULFPORT ENERGY CORP 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) 3001 QUAIL SPRINGS PARKWAY 3. Statement for Issuer's Fiscal Year Ended (Month/Day/Year) 06/05/2017 (Street) OKLAHOMA CITY, OK 73134 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Reporting (check applicable line) _X_ Form Filed by One Reporting Person ___ 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 (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned at end of Issuer's Fiscal Year (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Amount (A) or (D) Price Common Stock 06/05/2017   A4 2,098,137 A $ (1) 11,181,467 (1) (2) D Â

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SEC 2270 (9-02)

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 (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

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 (Month/Day/Year)

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 at End of Issuer's Fiscal Year (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
GULFPORT ENERGY CORP 3001 QUAIL SPRINGS PARKWAY OKLAHOMA CITY, OK 73134	  X	  X	Â	Â

Signatures

/s/ Keri Crowell, Chief Financial Officer		02/14/2018
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	On June 5, 2017, Gulfport Energy Corporation ("Gulfport") received 2,098,137 shares of common stock, par value $0.01 per share ("Common Stock"), of Mammoth Energy Services, Inc. (the "Issuer") from the Issuer as consideration for Gulfport's contribution of its membership interests in Sturgeon Acquisitions LLC, Stingray Energy Services LLC and Stingray Cementing LLC pursuant to three contribution agreements, each dated as of March 20, 2017, and as amended and restated on May 12, 2017, by and among Gulfport, the Issuer and certain other contributors party thereto, and each of which was approved in advance by the board of directors of the Issuer.
(2)	Of these securities, 5,135 are unvested restricted stock units ("RSUs") that were granted under the Issuer's 2016 Equity Incentive Plan and were assigned to Gulfport by its director designees to the Issuer's board of directors under the terms of their respective employment with Gulfport. Such director designees previously reported the acquisition of the RSUs in their respective Form 4 filings and indicated that these were assigned to Gulfport. Of these 5,135 unvested RSUs, 2,222 will vest on October 19, 2018 and 2,913 will vest on the earlier of June 8, 2018 and the date of the Issuer's 2018 Annual Meeting of Stockholders. Each RSU represents a contingent right to receive one share of Common Stock of the Issuer.

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