X0303 4 2011-06-16 0000773910 ANADARKO PETROLEUM CORP APC 0001269019 DANIELS ROBERT P ANADARKO PETROLEUM CORPORATION 1201 LAKE ROBBINS DRIVE WOODLANDS TX 77380 1 SVP, Worldwide Exploration Common Stock 2011-06-16 4 M 0 9300 33.365 A 28519 D Common Stock 2011-06-16 4 S 0 9300 69.6329 D 19219 D Common Stock 16965 I 401 (k) Plan Non Qualified Stock Option (Right to Buy) 33.365 2011-06-16 4 M 0 9300 0 D 2011-11-16 Common Stock 9300 0 D The reporting person had previously transferred the economic interest in these stock options to his ex-wife pursuant to a divorce decree and has exercise/sold these options/shares at her request. This transaction was executed in multiple trades at prices ranging from $69.63 to $69.66 The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or sercurity holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. The option is exercisable in three annual installments beginning one year after the date of grant. /s/ Linda Mansker by power of atty. for Robert P. Daniels 2011-06-17