PATTERSON UTI ENERGY INC

Ticker: PTEN CUSIP: 703481101 Class: Common Stock

Guinness Asset Management LTD's Holding History (CIK: 0001409661)

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

Q1 2014

Shares 226,640 Value ($000) $7,180 Avg Close $27.81 Range $24.37 - $31.95

Q4 2013

Shares 252,940 Value ($000) $6,404 Avg Close $23.93 Range $21.29 - $26.09

Q3 2013

Shares 294,140 Value ($000) $6,289 Avg Close $20.54 Range $18.83 - $22.41

Q2 2013

Shares 299,040 Value ($000) $5,788 Avg Close $21.83 Range $18.96 - $25.12

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2014	226,640	$7,180	$27.81	$24.37 - $31.95
Q4 2013	252,940	$6,404	$23.93	$21.29 - $26.09
Q3 2013	294,140	$6,289	$20.54	$18.83 - $22.41
Q2 2013	299,040	$5,788	$21.83	$18.96 - $25.12