MAMMOTH ENERGY SVCS INC

Ticker: TUSK CUSIP: 56155L108 Class: COM

Parallax Volatility Advisers, L.P.'s Holding History (CIK: 0001521001)

Note: Option positions (PUT/CALL) are excluded.

Q1 2019

Shares 2,098 Value ($000) $35 Avg Close $21.35 Range $16.27 - $24.62

Q4 2018

Shares 1,967 Value ($000) $35 Avg Close $24.57 Range $16.81 - $30.61

Q3 2018

Shares 2,081 Value ($000) $61 Avg Close $32.95 Range $25.64 - $40.75

Q4 2017

Shares 1,260 Value ($000) $25 Avg Close $18.21 Range $14.21 - $21.32

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2019	2,098	$35	$21.35	$16.27 - $24.62
Q4 2018	1,967	$35	$24.57	$16.81 - $30.61
Q3 2018	2,081	$61	$32.95	$25.64 - $40.75
Q4 2017	1,260	$25	$18.21	$14.21 - $21.32