PATTERSON UTI ENERGY INC

Ticker: PTEN CUSIP: 703481101 Class: Common Stock

EMERALD ADVISERS, LLC's Holding History (CIK: 0001015083)

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

Q1 2019

Shares 49,949 Value ($000) $700 Avg Close $13.11 Range $9.85 - $14.79

Q4 2018

Shares 117,585 Value ($000) $1,217 Avg Close $14.74 Range $9.49 - $18.24

Q3 2018

Shares 119,128 Value ($000) $2,038 Avg Close $17.18 Range $14.60 - $19.29

Q2 2018

Shares 74,409 Value ($000) $1,339 Avg Close $20.05 Range $16.61 - $23.99

Q1 2018

Shares 43,348 Value ($000) $759 Avg Close $20.88 Range $16.82 - $25.03

Q4 2017

Shares 10,509 Value ($000) $242 Avg Close $20.72 Range $17.24 - $23.26

Q1 2017

Shares 68,086 Value ($000) $1,652 Avg Close $26.97 Range $22.83 - $29.76

Q4 2016

Shares 18,660 Value ($000) $502 Avg Close $24.70 Range $20.79 - $29.56

Q3 2014

Shares 83,795 Value ($000) $2,726 Avg Close $33.96 Range $31.12 - $38.43

Q2 2014

Shares 82,114 Value ($000) $2,869 Avg Close $32.83 Range $30.24 - $35.42

Q1 2014

Shares 29,984 Value ($000) $950 Avg Close $27.81 Range $24.37 - $31.95

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2019	49,949	$700	$13.11	$9.85 - $14.79
Q4 2018	117,585	$1,217	$14.74	$9.49 - $18.24
Q3 2018	119,128	$2,038	$17.18	$14.60 - $19.29
Q2 2018	74,409	$1,339	$20.05	$16.61 - $23.99
Q1 2018	43,348	$759	$20.88	$16.82 - $25.03
Q4 2017	10,509	$242	$20.72	$17.24 - $23.26
Q1 2017	68,086	$1,652	$26.97	$22.83 - $29.76
Q4 2016	18,660	$502	$24.70	$20.79 - $29.56
Q3 2014	83,795	$2,726	$33.96	$31.12 - $38.43
Q2 2014	82,114	$2,869	$32.83	$30.24 - $35.42
Q1 2014	29,984	$950	$27.81	$24.37 - $31.95