PATTERSON UTI ENERGY INC

Ticker: PTEN CUSIP: 703481101 Class: Common Stock

Kohlberg Kravis Roberts & Co. L.P.'s Holding History (CIK: 0001399770)

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

Q4 2013

Shares 61,000 Value ($000) $1,545 Avg Close $23.93 Range $21.29 - $26.09

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2013	61,000	$1,545	$23.93	$21.29 - $26.09