PATTERSON UTI ENERGY INC

Ticker: PTEN CUSIP: 703481101 Class: Common Stock

Artisan Partners Limited Partnership's Holding History (CIK: 0001466153)

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

Q1 2016
Shares 409,294 Value ($000) $7,212 Avg Close $14.91 Range $10.94 - $18.75
Q4 2015
Shares 481,539 Value ($000) $7,262 Avg Close $15.38 Range $12.82 - $17.45
Q3 2015
Shares 574,827 Value ($000) $7,553 Avg Close $15.85 Range $12.97 - $18.80
Q2 2015
Shares 647,059 Value ($000) $12,174 Avg Close $20.74 Range $18.30 - $23.11
Q1 2015
Shares 1,342,488 Value ($000) $25,205 Avg Close $17.15 Range $13.30 - $19.70
Q4 2014
Shares 8,526,668 Value ($000) $141,457 Avg Close $21.10 Range $14.01 - $33.28
Q3 2014
Shares 6,791,640 Value ($000) $220,932 Avg Close $33.96 Range $31.12 - $38.43
Q2 2014
Shares 7,647,356 Value ($000) $267,199 Avg Close $32.83 Range $30.24 - $35.42
Q1 2014
Shares 9,979,878 Value ($000) $316,163 Avg Close $27.81 Range $24.37 - $31.95
Q4 2013
Shares 11,745,246 Value ($000) $297,390 Avg Close $23.93 Range $21.29 - $26.09
Q3 2013
Shares 11,505,368 Value ($000) $245,985 Avg Close $20.54 Range $18.83 - $22.41
Q2 2013
Shares 10,699,332 Value ($000) $207,085,571 Avg Close $21.83 Range $18.96 - $25.12