X0202 4 2006-01-03 0 0000101778 MARATHON OIL CORP MRO 0001237640 LADER PHILIP C/O MARATHON OIL CORPORATION 5555 SAN FELIPE ROAD HOUSTON TX 77056 1 0 0 0 COMMON STOCK 2006-01-03 4 A 0 1916.002 65.24 A 11605.262 D Annual Director Stock Awards granted under Marathon Oil Corporation 2003 Incentive Compensation Plan. The annual non-retainer stock-based compensation represented by these common stock units vest upon reporting person's retirement from the Board of Directors. Shares of common stock will be issued upon vesting of common stock units. Includes dividends of 208.185 shares previously not reported pursuant to Rule 16a-11. By: R. J. Kolencik, Attorney-in-Fact for Philip Lader 2006-01-05