PATTERSON UTI ENERGY INC

Ticker: PTEN CUSIP: 703481101 Class: Common Stock

DRIEHAUS CAPITAL MANAGEMENT LLC's Holding History (CIK: 0000938206)

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

Q4 2022

Shares 468,889 Value ($000) $7,896 Avg Close $16.50 Range $12.37 - $19.81

Q2 2022

Shares 1,183,204 Value ($000) $18,647 Avg Close $16.79 Range $13.81 - $20.53

Q1 2022

Shares 1,574,673 Value ($000) $24,376 Avg Close $12.62 Range $8.44 - $17.09

Q4 2016

Shares 38,468 Value ($000) $1,036 Avg Close $24.70 Range $20.79 - $29.56

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2022	468,889	$7,896	$16.50	$12.37 - $19.81
Q2 2022	1,183,204	$18,647	$16.79	$13.81 - $20.53
Q1 2022	1,574,673	$24,376	$12.62	$8.44 - $17.09
Q4 2016	38,468	$1,036	$24.70	$20.79 - $29.56