MAMMOTH ENERGY SVCS INC

Ticker: TUSK CUSIP: 56155L108 Class: COM

MARTINGALE ASSET MANAGEMENT L P's Holding History (CIK: 0000936944)

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

Q3 2018

Shares 34,433 Value ($000) $1,003 Avg Close $32.95 Range $25.64 - $40.75

Q2 2018

Shares 38,028 Value ($000) $1,292 Avg Close $35.13 Range $28.34 - $42.30

Q1 2018

Shares 15,214 Value ($000) $488 Avg Close $24.99 Range $18.66 - $33.67

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2018	34,433	$1,003	$32.95	$25.64 - $40.75
Q2 2018	38,028	$1,292	$35.13	$28.34 - $42.30
Q1 2018	15,214	$488	$24.99	$18.66 - $33.67