MAMMOTH ENERGY SVCS INC

Ticker: TUSK CUSIP: 56155L108 Class: COM

Aperio Group, LLC's Holding History (CIK: 0001364615)

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

Q2 2019

Shares 7,389 Value ($000) $51 Avg Close $12.71 Range $5.55 - $18.81

Q1 2019

Shares 12,223 Value ($000) $204 Avg Close $21.35 Range $16.27 - $24.62

Q4 2018

Shares 10,891 Value ($000) $196 Avg Close $24.57 Range $16.81 - $30.61

Q3 2018

Shares 8,382 Value ($000) $244 Avg Close $32.95 Range $25.64 - $40.75

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2019	7,389	$51	$12.71	$5.55 - $18.81
Q1 2019	12,223	$204	$21.35	$16.27 - $24.62
Q4 2018	10,891	$196	$24.57	$16.81 - $30.61
Q3 2018	8,382	$244	$32.95	$25.64 - $40.75