Marathon Oil Increases Second Quarter 2005 Dividend

Marathon Oil (NYSE: MRO) announced that the company's board of directors has approved a five cent, or 18 percent, per share increase in the quarterly dividend payable on Marathon Oil Corporation Common Stock, resulting in a new quarterly dividend rate of 33 cents per share. Since July 2003 the company has increased the quarterly dividend three times resulting in a 43 percent increase during this period.

The dividend is payable September 12, 2005, to stockholders of record at the close of business on August 17, 2005.