X0303 4 2011-03-03 0 0000006769 APACHE CORP APA 0001240213 BAHORICH MICHAEL S 2000 POST OAK BLVD. SUITE 100 HOUSTON TX 77056 0 1 0 0 Exec Vice President & Chief Technology Officer Common Stock 2011-03-03 4 M 0 1435. 0 A 37003. D Common Stock 2011-03-03 4 F 0 380. 120.86 D 36623. D Common Stock 4950. I By Trust fbo Nephews & Nieces Conditional Grant / ($108 Threshold) 0 2011-03-03 4 M 0 1435. 0 D 2011-03-01 Common Stock 1435. 0 D The shares of common stock of Apache are deemed to also represent certain preferred stock purchase rights ('Rights'). The Rights are not currently exercisable or separately tradable and presently are evidenced by certificates for shares of the common stock. Value attributable to such Rights, if any, is reflected in the market price of the common stock. $108.00 price threshold attained on 02/29/2008 under the terms of 2005 Share Appreciation Plan - data for the 03/01/2011 vesting provided by the plan administrator on 03/03/2011. Grant vested one-fourth on each of 02/29/2008, 03/01/2009, 03/01/2010,and 03/01/2011, and vested portion distributed within 30 days of each such date. Shares used to cover required tax withholding on 03/01/2011 vesting of conditional grant - data provided by the plan administrator on 03/03/2011. With tandem tax withholding right Cheri L. Peper, Attorney-in-Fact 2011-03-03