CORPORATE HEADQUARTERS

Occidental Petroleum Corporation
10889 Wilshire Boulevard
Los Angeles, California 90024-4201

INVESTOR RELATIONS

1230 Avenue of the Americas
New York, New York 10020
(212) 603-8111

Christopher G. Stavros
Vice President, Investor Relations and Treasurer

Christopher M. Degner
Director, Investor Relations

E-MAIL

investorrelations@oxy.com