Marathon Oil Corporation

(MRO)

Marathon Oil Corporation (Marathon Oil) is an international energy company engaged in exploration and production, oil sands mining and integrated gas. The Company has a portfolio of assets of crude oil production with exploration upside. The Company's operations are located in North America, Europe and Africa. Marathon Oil's exploration activities are focused on adding production to existing core areas and developing new areas. The Company also holds ownership interests in both operated and outside-operated oil sands leases.

On June 30, 2011, the spin-off of the downstream (Refining, Marketing and Transportation) business was completed, creating two independent energy companies: Marathon Oil Corporation (Marathon Oil) and Marathon Petroleum Corporation (MPC).

Marathon's integrated gas business adds value through the development of opportunities created by demand for natural gas. This business complements the Company's exploration and production operations and opens a wide array of investment opportunities designed to add sustainable value growth.