Plains Exploration & Production Co. - 2011-03-25

Priced an underwritten public offering of 6 5/8% senior notes due 2021. The notes are being sold to the public at par. Plains intends to use the net proceeds to pay debt and for general corporate purposes.

J.P. Morgan Securities LLC, Barclays Capital Inc., BNP Paribas Securities Corp., BMO Capital Markets Corp., Wells Fargo Securities LLC and Scotia Capital (USA) Inc. are book-running managers.