MAMMOTH ENERGY SERVICES, INC. — Director's Dealing 2016

Oct 21, 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Mammoth Energy Services, Inc. (TUSK)
CIK: 0001679268
Period of Report: 2016-10-19

Reporting Person: Straehla Arty (Director, Chief Executive Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2016-10-19	Common Stock	P	666	$15.00	Acquired	666	Indirect
2016-10-19	Common Stock	P	666	$15.00	Acquired	1332	Indirect
2016-10-19	Common Stock	A	250000	$0.00	Acquired	251332	Direct

Footnotes

F1: 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.

F2: 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.

F3: 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.