PATTERSON UTI ENERGY INC

Ticker: PTEN CUSIP: 703481101 Class: Common Stock

OBERMEYER WOOD INVESTMENT COUNSEL, LLLP's Holding History (CIK: 0001349654)

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

Q2 2013

Shares 1,935 Value ($000) $37 Avg Close $21.83 Range $18.96 - $25.12

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2013	1,935	$37	$21.83	$18.96 - $25.12