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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1679268	Mammoth Energy Services Inc.	TUSK	Crude Petroleum & Natural Gas (1311)	DE

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
874499	Gulfport Energy Corp	14313 N May Ave # 100 Oklahoma City OK 73134		Yes	No	Yes	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2016-10-19	76,250	$14.06	9,080,417	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	6,667	Indirect	See footnote

Footnotes

On October 19, 2016, the closing date (the "Closing Date") of the initial public offering of common stock, par value $0.01 per share (the "IPO"), of Mammoth Energy Services, Inc. (the "Issuer"). Gulfport Energy Corporation ("Gulfport"), on behalf of services of Aaron Gaydosik, a director of the Issuer, was granted 6,667 restricted stock units ("RSUs") under the Issuer's 2016 Equity Incentive Plan. 2,223 RSUs vested on the Closing Date of the IPO, and the remaining 4,444 RSUs 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. Mr. Gaydosik reported the acquisition of the RSUs on a Form 4 filed on the date hereof and indicated that these RSUs were assigned to Gulfport under the terms of his employment with Gulfport.
These shares of comon stock were sold by Gulfport to the underwriters in the IPO at a price of $14.0625 per share.
Of these securities, 9,073,750 shares of common stock were received by Gulfport in connection with Gulfport's contribution of its membership interests in Mammoth Energy Partners LLC to the Issuer, which was completed prior to the IPO and approved by the board of directors of the Issuer in advance.