X0303 4 2010-03-09 1 0001125057 ENCORE ACQUISITION CO EAC 0001258237 WINNE JAMES A III 777 MAIN STREET SUITE 1400 FORT WORTH TX 76102 1 0 0 0 Common Stock 2010-03-09 4 D 0 24500 D 0 D Options to purchase Common Stock 8.98 2010-03-09 4 D 0 3000 D 2004-05-04 2011-05-04 Common Stock 3000 0 D Options to purchase Common Stock 11.4933 2010-03-09 4 D 0 7500 D 2006-04-30 2013-04-30 Common Stock 7500 0 D Options to purchase Common Stock 19.7667 2010-03-09 4 D 0 7500 D 2007-04-29 2014-04-29 Common Stock 7500 0 D The shares were disposed of pursuant to the merger agreement between the issuer and Denbury Resources Inc. in exchange for aggregate consideration of $50 per share (which may consist of cash, Denbury stock or a combination thereof) as provided for in the merger agreement. This option was converted into a cash payment representing the product of the number of shares subject to the option and the difference between the highest price per share paid within 60 days prior to the merger and the exercise price of the option. /s/ Robert C. Reeves (attorney-in-fact) 2010-03-09