Jon A. Jeppesen

Senior Vice President — Gulf Coast Region

JON A. JEPPESEN, 60, was appointed senior vice president in February 2003, having been the Company’s regional vice president for the Gulf Coast region since 2002 and the Offshore region since 1996. He served as the Company’s vice president of exploration and development for North America from 1994 to 1996, and manager of the Company’s offshore exploration and development from 1993 to 1994.

Prior to joining the Company, Mr. Jeppesen was vice president of exploration and development for Pacific Enterprises Oil Company, Dallas, Texas, from 1989 to 1992.

Mr. Jeppesen received his bachelor’s and master’s degrees in geology from Kansas State University. He is a member of the American Association of Petroleum Geologists and the Houston Geological Society.