Marathon Oil Welcomes New Member to Board

Marathon Oil announced that Linda Z. Cook has been elected to the Company's board of directors, effective July 1, 2011.

Cook, whose career in the oil and gas industry spanned 29 years, retired in 2009 from Royal Dutch Shell PLC where she was a member of the executive committee and the board of directors, serving as executive director of Shell Gas and Power based in Den Haag, Netherlands.

"Marathon is delighted to welcome Linda Cook to Marathon Oil's board of directors," said Clarence P. Cazalot, Jr., chairman, president and CEO. "Linda's extensive global experience in oil and gas exploration and production, her keen business insights and knowledge of other key elements of the upstream business, and her proven track record as a leader make her an outstanding addition to the Marathon Oil board."