MAMMOTH ENERGY SVCS INC

Ticker: TUSK CUSIP: 56155L108 Class: COM

DRIEHAUS CAPITAL MANAGEMENT LLC's Holding History (CIK: 0000938206)

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

Q2 2018

Shares 173,662 Value ($000) $5,898 Avg Close $35.13 Range $28.34 - $42.30

Q1 2018

Shares 275,059 Value ($000) $8,818 Avg Close $24.99 Range $18.66 - $33.67

Q2 2017

Shares 185,412 Value ($000) $3,449 Avg Close $18.67 Range $15.80 - $22.31

Q1 2017

Shares 199,132 Value ($000) $4,283 Avg Close $19.07 Range $15.07 - $24.54

Q4 2016

Shares 292,731 Value ($000) $4,450 Avg Close $14.79 Range $11.91 - $19.05

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2018	173,662	$5,898	$35.13	$28.34 - $42.30
Q1 2018	275,059	$8,818	$24.99	$18.66 - $33.67
Q2 2017	185,412	$3,449	$18.67	$15.80 - $22.31
Q1 2017	199,132	$4,283	$19.07	$15.07 - $24.54
Q4 2016	292,731	$4,450	$14.79	$11.91 - $19.05