X0202 4 2007-08-02 0 0001328650 Bronco Drilling Company, Inc. BRNC 0001355088 Snipes William R C/O BRONCO DRILLING COMPANY, INC., 16217 NORTH MAY AVENUE EDMOND OK 73013 1 0 0 0 Common Stock 2007-08-02 4 A 0 10000 A 10000 D Director Stock Option (right to buy) 23.45 2007-08-02 4 D 0 20000 D 2016-03-23 Common Stock 20000 0 D On August 2, 2007, the issuer cancelled an option granted to the reporting person on March 23, 2006. In exchange for the cancellation of the option, the reporting person received 10,000 shares of restricted stock granted under the Bronco Drilling Company, Inc. 2006 Stock Incentive Plan. Of these shares of restricted stock, 50% will vest on January 1, 2008 and the remaining 50% will vest on January 1, 2009. The cancelled option provided for vesting in 36 equal monthly installments beginning on March 23, 2006. /s/WILLIAM R. SNIPES 2007-08-03