PATTERSON UTI ENERGY INC

Ticker: PTEN CUSIP: 703481101 Class: Common Stock

Hirtle Callaghan & Co LLC's Holding History (CIK: 0001360710)

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

Q4 2014

Shares 1,175 Value ($000) $19 Avg Close $21.10 Range $14.01 - $33.28

Q3 2014

Shares 1,175 Value ($000) $38 Avg Close $33.96 Range $31.12 - $38.43

Q2 2014

Shares 1,175 Value ($000) $41 Avg Close $32.83 Range $30.24 - $35.42

Q1 2014

Shares 1,175 Value ($000) $37 Avg Close $27.81 Range $24.37 - $31.95

Q4 2013

Shares 1,175 Value ($000) $30 Avg Close $23.93 Range $21.29 - $26.09

Q3 2013

Shares 1,175 Value ($000) $25 Avg Close $20.54 Range $18.83 - $22.41

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2014	1,175	$19	$21.10	$14.01 - $33.28
Q3 2014	1,175	$38	$33.96	$31.12 - $38.43
Q2 2014	1,175	$41	$32.83	$30.24 - $35.42
Q1 2014	1,175	$37	$27.81	$24.37 - $31.95
Q4 2013	1,175	$30	$23.93	$21.29 - $26.09
Q3 2013	1,175	$25	$20.54	$18.83 - $22.41