PATTERSON UTI ENERGY INC

Ticker: PTEN CUSIP: 703481101 Class: Common Stock

KINGDON CAPITAL MANAGEMENT, L.L.C.'s Holding History (CIK: 0001000097)

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

Q2 2014
Shares 520,000 Value ($000) $18,164 Avg Close $32.83 Range $30.24 - $35.42
Q1 2014
Shares 650,000 Value ($000) $20,586 Avg Close $27.81 Range $24.37 - $31.95
Q4 2013
Shares 300,000 Value ($000) $7,596 Avg Close $23.93 Range $21.29 - $26.09
Q3 2013
Shares 650,000 Value ($000) $13,897 Avg Close $20.54 Range $18.83 - $22.41