X0202 4 2008-01-02 0 0000101778 MARATHON OIL CORP MRO 0001012779 DAVIS WILLIAM L C/O MARATHON OIL CORPORATION 5555 SAN FELIPE ROAD HOUSTON TX 77056 1 0 0 0 COMMON STOCK 2008-01-02 4 A 0 2035.831 61.40 A 26534.799 D COMMON STOCK 2000.000 I By Revocable Trust Annual Non-Retainer Common Stock Award granted under Marathon Oil Corporation 2007 Incentive Compensation Plan. The annual non-retainer stock-based compensation represented by these common stock units are credited to an unfunded account and are payable in shares of common stock upon reporting person's retirement from the Board of Directors. On June 18, 2007, the common stock of Marathon Oil Corporation split 2-for-1 for holders of record on May 23, 2007, resulting in the reporting person's ownership, in the aggregate, of 13153.617 additional shares of common stock or common stock units. Includes dividends of 281.749 shares previously not reported pursuant to Rule 16a-11. Shares held by William L. Davis, not individually, but as trustee of the William L. Davis III Revocable Trust, or his successors in interest. The reporting person is the trustee and settlor of the William L. Davis III Revocable Trust pursuant to the William L. Davis III Revocable Trust Agreement dated June 5, 1992, as amended. W. F. Schwind, Jr., Attorney-in-Fact for William L. Davis 2008-01-04