X0202 4 2005-08-01 0 0000889900 PATTERSON UTI ENERGY INC PTEN 0001238210 BERNS KENNETH N 1801 CENTURY PARK EAST SUITE 1111 LOS ANGELES CA 90067 1 1 0 0 Senior Vice President Common Stock, $.01 par value per share 2005-08-01 4 M 0 25000 7.925 A 85000 D Common Stock, $.01 par value per share 2005-08-01 4 M 0 76800 13.195 A 161800 D Common Stock, $.01 par value per share 2005-08-01 4 S 0 101800 32.815 D 60000 D Common Stock, $.01 par value per share 2005-08-02 4 M 0 83200 13.195 A 143200 D Common Stock, $.01 par value per share 2005-08-02 4 S 0 83200 32.9711 D 60000 D Common Stock, $.01 par value per share 2005-08-03 4 M 0 84500 13.195 A 144500 D Common Stock, $.01 par value per share 2005-08-03 4 S 0 84500 33.1915 D 60000 D Stock Options (Right to Buy) 7.925 2005-08-01 4 M 0 25000 0.00 D 2005-07-20 2011-07-19 Common Stock 25000 50000 D Stock Options (Right to Buy) 13.195 2005-08-01 4 M 0 76800 0.00 D 2003-09-18 2012-07-17 Common Stock 76800 251300 D Stock Options (Right to Buy) 13.195 2005-08-02 4 M 0 83200 0.00 D 2004-04-18 2012-07-17 Common Stock 83200 168100 D Stock Options (Right to Buy) 13.195 2005-08-03 4 M 0 84500 0.00 D 2004-12-18 2012-07-17 Common Stock 84500 83600 D Acquired upon exercise of option. Weighted average price: Actual sales prices ranged from $32.79 to $32.882. Weighted average price: Actual sales prices ranged from $32.84 to $33.14. Weighted average price: Actual sales prices ranged from $33.09 to $33.36. Currently vested. * Signed by Jonathan D. Nelson pursuant to a Limited Power of Attorney filed with the SEC on 4/30/2004 /s/ Jonathan D. Nelson 2005-08-03