PATTERSON UTI ENERGY INC

Ticker: PTEN CUSIP: 703481101 Class: Common Stock

LOOMIS SAYLES & CO L P's Holding History (CIK: 0000312348)

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

Q4 2018

Shares 54,443 Value ($000) $563 Avg Close $14.74 Range $9.49 - $18.24

Q3 2018

Shares 164,820 Value ($000) $2,820 Avg Close $17.18 Range $14.60 - $19.29

Q2 2018

Shares 407,010 Value ($000) $7,326 Avg Close $20.05 Range $16.61 - $23.99

Q1 2018

Shares 403,804 Value ($000) $7,071 Avg Close $20.88 Range $16.82 - $25.03

Q1 2016

Shares 574 Value ($000) $10 Avg Close $14.91 Range $10.94 - $18.75

Q1 2015

Shares 5,400 Value ($000) $101 Avg Close $17.15 Range $13.30 - $19.70

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2018	54,443	$563	$14.74	$9.49 - $18.24
Q3 2018	164,820	$2,820	$17.18	$14.60 - $19.29
Q2 2018	407,010	$7,326	$20.05	$16.61 - $23.99
Q1 2018	403,804	$7,071	$20.88	$16.82 - $25.03
Q1 2016	574	$10	$14.91	$10.94 - $18.75
Q1 2015	5,400	$101	$17.15	$13.30 - $19.70