X0303 4 2011-03-03 0 0000006769 APACHE CORP APA 0001506249 Gryder Rodney A. C/O APACHE CORPORATION 2000 POST OAK BLVD., SUITE 100 HOUSTON TX 77056-4400 0 1 0 0 Vice President, Audit Common Stock 2011-03-03 4 M 0 740. 0 A 5475. D Common Stock 2011-03-03 4 F 0 196. 120.86 D 5279. D Common Stock 1374.452 I Held by trustee of 401(k) plan Conditional Grant / ($108 Threshold) 0 2011-03-03 4 M 0 740. 0 D 2011-03-01 Common Stock 740. 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 Payable if Apache common stock attains the per share price threshold prior to 01/01/2009. If threshold is attained, will be paid over four vesting dates: within 30 days after the date on which the price threshold is attained, and the dates 12 months, 24 months, and 36 months following such date of attainment. Cheri L. Peper, Attorney-in-Fact 2011-03-03