Mark E. Ellis

Mark E. Ellis, President and Chief Operating Officer, has over 28 years of experience in the oil and gas industry, most recently serving as President of the Lower 48 for ConocoPhillips. Prior to joining ConocoPhillips, Mr. Ellis served as Senior Vice President of North American Production for Burlington Resources. In 2000, he was named President of Burlington Resources Canada Ltd. in Calgary.

Mr. Ellis, an attorney, joined Burlington Resources in 1985 and also held the positions of Vice President of the San Juan Division, Vice President and Chief Engineer and Manager of Acquisitions. He began his career at Superior Oil Company, where he served in several engineering positions in the Onshore and Offshore divisions, and holds a bachelor's degree in petroleum engineering from Texas A&M University. Mr. Ellis is a member of the Society of Petroleum Engineers and a past board member of the New Mexico Oil & Gas Association.

While in Calgary, he was a member of the Board of Governors of the Canadian Association of Petroleum Producers and served on the Foundation Board of the Alberta Children's Hospital. Mr. Ellis currently serves on the Board of The Center for Hearing and Speech in Houston, Industry Board of Petroleum Engineering at Texas A&M University and the Visiting Committee of Petroleum Engineering at the Colorado School of Mines.

Charlene A. Ripley

Senior Vice President, General Counsel and Corporate Secretary, Ms. Ripley is the Senior Vice President, General Counsel and Corporate Secretary for LINN Energy, LLC. Most recently, she served as Vice President, General Counsel, Corporate Secretary and Chief Compliance Officer for Anadarko Petroleum Corporation.

Ms. Ripley joined Norcen Energy Resources Limited, a predecessor to Anadarko Canada Corporation, in 1997 as Senior Counsel and was named Vice President for Anadarko Petroleum Corporation in January 2003 and assumed the role of chief legal officer for the company in November 2003, the role of Corporate Secretary in September 2004 and the role of Chief Compliance Officer in February 2006. Before joining Anadarko, Ms. Ripley was in-house counsel for Amoco Canada Petroleum Company Ltd. from 1990 to 1997. Prior to that she was an attorney for a law firm based in Calgary, Alberta, Canada.

Ms. Ripley holds a Bachelor of Arts degree, with distinction, from the University of Alberta. She earned her Law Degree from Dalhousie University in Halifax, Nova Scotia. She is a member of the Texas State Bar, Law Society of Alberta, Texas General Counsel Forum (board member), Canadian Bar Association, the Executive Women's Partnership of the Greater Houston Partnership, and the Women's Energy Network.

She helped found and is the President of The Woodlands Bar Association. Ms. Ripley serves on several non-profit and advisory boards including: the Cynthia Woods Mitchell Pavilion, the American Heart Association - Montgomery Division and the Mayor's (Houston) International Affairs and Development Council/Canada (Chairman). She is a frequent speaker at legal conferences on the topic of Legal Department Management.

Other references:

Mark E. Ellis Jr., Attorney, British Columbia, Canada
PWR Foundation
First Mark E. Ellis, Indiana's First Attorney General
The Other Mark E. Ellis

Kent Westerberg
Brian Rigonan

Miscellaneous
Douglas Kraft