X0303 4 2010-03-09 1 0001125057 ENCORE ACQUISITION CO EAC 0001267298 REEVES ROBERT C 777 MAIN STREET SUITE 1400 FORT WORTH TX 76102 0 1 0 0 SVP, CFO and Treasurer Common Stock 2010-03-09 4 F 0 8175 51.65 D 108155 D Common Stock 2010-03-09 4 D 0 68206 D 39949 D Common Stock 2010-03-09 4 D 0 39949 D 0 D Options to purchase Common Stock 8.40 2010-03-09 4 D 0 23454 D 2004-10-23 2011-10-23 Common Stock 23454 0 D Options to purchase Common Stock 30.55 2010-03-09 4 D 0 6546 19.45 D 2019-02-09 Common Stock 6546 0 D Options to purchase Common Stock 30.55 2010-03-09 4 D 0 17025 19.45 D 2019-02-09 Common Stock 17025 0 D Options to purchase Common Stock 9.3333 2010-03-09 4 D 0 10179 D 2004-03-08 2011-03-08 Common Stock 10179 0 D Options to purchase Common Stock 8.40 2010-03-09 4 D 0 6546 D 2004-10-23 2011-10-23 Common Stock 6546 0 D Options to purchase Common Stock 12.40 2010-03-09 4 D 0 15483 D 2005-11-22 2012-11-22 Common Stock 15483 0 D Options to purchase Common Stock 17.1733 2010-03-09 4 D 0 12448 D 2007-02-10 2014-02-10 Common Stock 12448 0 D Options to purchase Common Stock 26.5467 2010-03-09 4 D 0 5040 23.4533 D 2008-02-14 2015-02-14 Common Stock 5040 0 D Options to purchase Common Stock 31.10 2010-03-09 4 D 0 5134 18.90 D 2009-02-15 2016-02-15 Common Stock 5134 0 D Options to purchase Common Stock 25.73 2010-03-09 4 D 0 13253 24.27 D 2010-02-12 2017-02-12 Common Stock 13253 0 D Options to purchase Common Stock 25.73 2010-03-09 4 D 0 5788 24.27 D 2010-02-12 2017-02-12 Common Stock 5788 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. Pursuant to the merger agreement, the shares converted into a number of restricted shares of Denbury common stock determined by multiplying (i) the number of shares by (ii) the exchange ratio used in determining the consideration payable to Encore stockholders who elected to receive only common stock consideration. 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. This option, which provided for vesting in three equal annual installments beginning on February 9, 2010, was converted into a cash payment representing the product of the number of shares subject to the option and the difference between the aggregate consideration per share provided for in the merger agreement and the exercise price of the option. /s/ Robert C. Reeves 2010-03-09