PATTERSON UTI ENERGY INC

Ticker: PTEN CUSIP: 703481101 Class: Common Stock

BLAIR WILLIAM & CO/IL's Holding History (CIK: 0000902367)

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

Q2 2015

Shares 45,494 Value ($000) $856 Avg Close $20.74 Range $18.30 - $23.11

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2015	45,494	$856	$20.74	$18.30 - $23.11