Layton Mark E.

• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Earnings

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Abbreviations B: Buy, S: Sell, PP: Planned purchase, PS: Planned sale, O: Option / Other

Notification date	Transaction date	B/S Transaction type	Nb. shares Price Value	Number of shares	Price	Value	Details
2022-03-11	2022-03-10	Mammoth Energy Services Inc (TUSK)	S Sale	40,417 -8.2% 2.04 USD 82,325	40,417 -8.2%	2.04	USD 82,325
2021-03-11	2021-03-11	Mammoth Energy Services Inc (TUSK)	S Sale	55,789 -10.1% 5.22 USD 290,984	55,789 -10.1%	5.22	USD 290,984
2018-11-13	2018-11-09	Mammoth Energy Services Inc (TUSK)	S Sale	142 -0.3% 26.12 USD 3,709	142 -0.3%	26.12	USD 3,709
2018-03-07	2018-03-01	Mammoth Energy Services Inc (TUSK)	S Sale	4,373 -7.7% 26.13 USD 114,252	4,373 -7.7%	26.13	USD 114,252