Dividend Reinvestment and Direct Stock Purchase Plan

Effective October 12, 2009, the administrator for the Marathon Oil Corporation Dividend Reinvestment and Direct Stock Purchase Plan changed from National City Bank to Computershare Trust Company, N.A. For additional information please see Notice of Plan Administrator Change link set forth below. 

Marathon invites you to purchase your initial shares of Marathon Oil Corporation common stock without the use of a broker. Through the Dividend Reinvestment and Direct Stock Purchase Plan, we encourage you to take advantage of the following benefits:

• All broker fees on purchases paid by Marathon
• From time to time, Marathon may offer up to a 3% discount*

Plan requirements:

• Initial investment of at least $500
• $10 one-time enrollment fee

Please download the Marathon Oil Corporation Dividend Reinvestment and Direct Stock Purchase Plan Prospectus (PDF, 83.2 KB) and Notice of Plan Administrator Change for complete information, and download and print the Dividend Reinvestment and Direct Stock Purchase Plan Enrollment Form (PDF, 140 KB) to participate in this program. Please mail your completed Authorization Form and payment to our Transfer Agent, Computershare, at the following address:

Computershare
P.O. Box 43078
Providence, RI 02940

You can also enroll and make your payments online at http://www.computershare.com/investor.

*Discounts are not offered at this time. Should a discount be offered, please contact Marathon's Dividend Reinvestment Plan Stock Line at 866-864-4611 for more information.

Note: This communication is not an offer to sell or a solicitation of an offer to buy any security. An offer to sell Marathon Oil Corporation common stock can only be made through the prospectus for the Dividend Reinvestment and Direct Stock Purchase Plan. Please read the prospectus before making a decision to enroll in the Plan. You can view the prospectus by clicking above or by requesting a copy by contacting Computershare at the address specified above.