MAMMOTH ENERGY SVCS INC

Ticker: TUSK CUSIP: 56155L108 Class: COM

VIRGINIA RETIREMENT SYSTEMS ET AL's Holding History (CIK: 0001005354)

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

Q4 2018

Shares 16,000 Value ($000) $288 Avg Close $24.57 Range $16.81 - $30.61

Q3 2018

Shares 21,600 Value ($000) $629 Avg Close $32.95 Range $25.64 - $40.75

Q2 2018

Shares 18,700 Value ($000) $635 Avg Close $35.13 Range $28.34 - $42.30

Q1 2018

Shares 9,300 Value ($000) $298 Avg Close $24.99 Range $18.66 - $33.67

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2018	16,000	$288	$24.57	$16.81 - $30.61
Q3 2018	21,600	$629	$32.95	$25.64 - $40.75
Q2 2018	18,700	$635	$35.13	$28.34 - $42.30
Q1 2018	9,300	$298	$24.99	$18.66 - $33.67