MAMMOTH ENERGY SERVICES, INC. — Director's Dealing 2018

Nov 13, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MAMMOTH ENERGY SERVICES, INC. (TUSK)
CIK: 0001679268
Period of Report: 2018-11-08

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-11-08	Common Stock	S	25151	$26.452	Disposed	199007	Direct
2018-11-08	Common Stock	S	11460	$27.288	Disposed	187547	Direct
2018-11-12	Common Stock	S	2230	$26.2004	Disposed	185317	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1792	Indirect

Footnotes

F1: These shares were sold to satisfy tax withholding obligations incurred in connection with the vesting of restricted stock units previously granted under the issuer's equity incentive plan.

F2: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $26.26 per share to $27.25 per share, inclusive. The reporting person undertakes to provide to Mammoth Energy Services, Inc. any security holder of Mammoth Energy Services, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes 2, 3 and 4 of this Form 4.

F3: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $27.26 per share to $27.32 per share, inclusive.

F4: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $26.10 per share to $26.25 per share, inclusive.

F5: These shares are held in three separate custodial accounts for the benefit of Mr. Straehla's grandchildren. Mr. Straehla maintains investment control over the accounts and may be deemed to have beneficial ownership of these shares.