MAMMOTH ENERGY SVCS INC

Ticker: TUSK CUSIP: 56155L108 Class: COM

OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AM's Holding History (CIK: 0001132716)

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

Q2 2017
Shares 325,243 Value ($000) $6,050,000 Avg Close $18.67 Range $15.80 - $22.31
Q1 2017
Shares 367,160 Value ($000) $7,898,000 Avg Close $19.07 Range $15.07 - $24.54
Q4 2016
Shares 380,285 Value ($000) $5,780,000 Avg Close $14.79 Range $11.91 - $19.05