PATTERSON UTI ENERGY INC

Ticker: PTEN CUSIP: 703481101 Class: Common Stock

WASATCH ADVISORS LP's Holding History (CIK: 0000814133)

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

Q1 2014
Shares 507,823 Value ($000) $16,088 Avg Close $27.81 Range $24.37 - $31.95
Q4 2013
Shares 2,337,296 Value ($000) $59,180 Avg Close $23.93 Range $21.29 - $26.09
Q3 2013
Shares 2,337,296 Value ($000) $49,971 Avg Close $20.54 Range $18.83 - $22.41
Q2 2013
Shares 1,821,866 Value ($000) $35,262 Avg Close $21.83 Range $18.96 - $25.12