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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1679268	Mammoth Energy Services Inc.	TUSK	()	4

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1450919	Arty Straehla	4727 Gaillardia Parkway, Suite 200 Oklahoma City OK 73142	Chief Executive Officer	Yes	Yes	No	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	Acquisiton	2016-10-19	666	$15.00	666	No	4	P	Indirect	As custodian for grandchild's UTMA account
Common Stock	Acquisiton	2016-10-19	666	$15.00	1,332	No	4	P	Indirect	As custodian for grandchild's UTMA account
Common Stock	Acquisiton	2016-10-19	250,000	$0.00	251,332	No	4	A	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	P	Indirect	As custodian for grandchild's UTMA account
No	4	P	Indirect	As custodian for grandchild's UTMA account
No	4	A	Direct

Footnotes

These shares of common stock, par value $0.01 per share (the "Common Stock"), of Mammoth Energy Services, Inc. (the "Issuer") were purchased under the directed share program in connection with the Issuer's initial public offering (the "IPO"). The underwriters reserved for sale at the IPO price up to 5% of the Common Stock being offered in the IPO for sale to the Issuer's employees, executive officers, directors, business associates and related persons at the public offering price. Shares of Common Stock bought by the reporting person in the directed share program are subject to a lock-up agreement entered into by the reporting person in connection with the IPO.
The shares are held in a custodial account for the benefit of two of Mr. Straehla's grandchildren. Mr. Straehla maintains investment control over the account.
These securities are restricted stock units that were granted under the Issuer's 2016 Equity Incentive Plan. All of these units will vest in three substantially equal installments beginning on October 19, 2017. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer.