MAMMOTH ENERGY SVCS INC

Ticker: TUSK CUSIP: 56155L108 Class: COM

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP's Holding History (CIK: 0001164508)

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

Q1 2019

Shares 68,467 Value ($000) $1,140 Avg Close $21.35 Range $16.27 - $24.62

Q2 2017

Shares 79,697 Value ($000) $1,482 Avg Close $18.67 Range $15.80 - $22.31

Q1 2017

Shares 68,821 Value ($000) $1,480 Avg Close $19.07 Range $15.07 - $24.54

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2019	68,467	$1,140	$21.35	$16.27 - $24.62
Q2 2017	79,697	$1,482	$18.67	$15.80 - $22.31
Q1 2017	68,821	$1,480	$19.07	$15.07 - $24.54