PATTERSON UTI ENERGY INC

Ticker: PTEN CUSIP: 703481101 Class: Common Stock

Lombard Odier Asset Management (USA) Corp's Holding History (CIK: 0001491719)

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

Q4 2018

Shares 800,000 Value ($000) $8,280 Avg Close $14.74 Range $9.49 - $18.24

Q3 2014

Shares 200,000 Value ($000) $6,506 Avg Close $33.96 Range $31.12 - $38.43

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2018	800,000	$8,280	$14.74	$9.49 - $18.24
Q3 2014	200,000	$6,506	$33.96	$31.12 - $38.43