PATTERSON UTI ENERGY INC

Ticker: PTEN CUSIP: 703481101 Class: Common Stock

FRED ALGER MANAGEMENT, LLC's Holding History (CIK: 0000003520)

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

Q3 2016

Shares 48,373 Value ($000) $1,082 Avg Close $20.07 Range $17.61 - $22.66

Q2 2016

Shares 48,914 Value ($000) $1,043 Avg Close $18.84 Range $16.06 - $22.12

Q1 2016

Shares 36,283 Value ($000) $639 Avg Close $14.91 Range $10.94 - $18.75

Q4 2015

Shares 47,837 Value ($000) $721 Avg Close $15.38 Range $12.82 - $17.45

Q3 2015

Shares 103,994 Value ($000) $1,366 Avg Close $15.85 Range $12.97 - $18.80

Q2 2015

Shares 105,630 Value ($000) $1,987 Avg Close $20.74 Range $18.30 - $23.11

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2016	48,373	$1,082	$20.07	$17.61 - $22.66
Q2 2016	48,914	$1,043	$18.84	$16.06 - $22.12
Q1 2016	36,283	$639	$14.91	$10.94 - $18.75
Q4 2015	47,837	$721	$15.38	$12.82 - $17.45
Q3 2015	103,994	$1,366	$15.85	$12.97 - $18.80
Q2 2015	105,630	$1,987	$20.74	$18.30 - $23.11