PATTERSON UTI ENERGY INC

Ticker: PTEN CUSIP: 703481101 Class: Common Stock

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

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

Q3 2016
Shares 332,807 Value ($000) $7,445,000 Avg Close $20.07 Range $17.61 - $22.66
Q2 2016
Shares 35,748 Value ($000) $762,000 Avg Close $18.84 Range $16.06 - $22.12
Q1 2016
Shares 895,319 Value ($000) $15,776,000 Avg Close $14.91 Range $10.94 - $18.75
Q4 2015
Shares 1,505,239 Value ($000) $22,699,000 Avg Close $15.38 Range $12.82 - $17.45
Q3 2015
Shares 1,004,396 Value ($000) $13,198,000 Avg Close $15.85 Range $12.97 - $18.80
Q2 2015
Shares 50,054 Value ($000) $942,000 Avg Close $20.74 Range $18.30 - $23.11
Q1 2015
Shares 399,016 Value ($000) $7,492,000 Avg Close $17.15 Range $13.30 - $19.70
Q3 2014
Shares 94,943 Value ($000) $3,088,000 Avg Close $33.96 Range $31.12 - $38.43