X0202 4 2004-06-09 0000891456 PLAINS EXPLORATION & PRODUCTION CO PXP 0000939485 FLORES JAMES C 700 MILAM SUITE 3100 HOUSTON TX 77002 1 1 0 0 CEO, President and Chairman Common Stock 2004-06-09 4 A 0 350000 0 A 579965 D Common Stock 1988-08-08 4 J 0 0 0 A 224.56 I By 401(k) plan. Common Stock 1988-08-08 4 J 0 0 0 A 1000000 I By Sable Management, L.P. Represents a grant of Restricted Stock Units vesting on the earlier of May 16, 2009 or the date the closing price per share equals or exceeds $37.92 on any ten out of twenty consecutive trading days on the NYSE or other exchange or market on which the shares primarily trade. The transaction date represented is inapplicable due to SEC reporting requirements to list all shares in same class when reporting a transaction. The transaction code represented is inapplicable due to SEC reporting requirements to list all shares in same class when reporting a transaction. The shares represented are inapplicable due to SEC reporting requirements to list all shares in same class when reporting a transaction. The price represented is inapplicable due to SEC reporting requirements to list all shares in same class when reporting a transaction. The information in this report is based on a plan statement dated as of March 31, 2004. Deborah R. Anderson, attorney-in-fact for James C. Flores 2004-06-09