PATTERSON UTI ENERGY INC

Ticker: PTEN CUSIP: 703481101 Class: Common Stock

HARRIS ASSOCIATES L P's Holding History (CIK: 0000813917)

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

Q3 2013

Shares 1,760,400 Value ($000) $37,637 Avg Close $20.54 Range $18.83 - $22.41

Q2 2013

Shares 1,760,400 Value ($000) $34,073 Avg Close $21.83 Range $18.96 - $25.12

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2013	1,760,400	$37,637	$20.54	$18.83 - $22.41
Q2 2013	1,760,400	$34,073	$21.83	$18.96 - $25.12