PATTERSON UTI ENERGY INC

Ticker: PTEN CUSIP: 703481101 Class: Common Stock

PGGM Investments's Holding History (CIK: 0001472190)

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

Q1 2015

Shares 1,092,872 Value ($000) $20,519 Avg Close $17.15 Range $13.30 - $19.70

Q4 2014

Shares 1,237,169 Value ($000) $20,525 Avg Close $21.10 Range $14.01 - $33.28

Q3 2014

Shares 855,126 Value ($000) $27,817 Avg Close $33.96 Range $31.12 - $38.43

Q2 2014

Shares 813,437 Value ($000) $28,421 Avg Close $32.83 Range $30.24 - $35.42

Q1 2014

Shares 774,021 Value ($000) $24,521 Avg Close $27.81 Range $24.37 - $31.95

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2015	1,092,872	$20,519	$17.15	$13.30 - $19.70
Q4 2014	1,237,169	$20,525	$21.10	$14.01 - $33.28
Q3 2014	855,126	$27,817	$33.96	$31.12 - $38.43
Q2 2014	813,437	$28,421	$32.83	$30.24 - $35.42
Q1 2014	774,021	$24,521	$27.81	$24.37 - $31.95