Howard J. Thill, Marathon Oil Corporation Vice President of Corporate, Government and Investor Relations, to Retire April 1,

Howard J. Thill, Marathon Oil Corporation Vice President of Corporate,
Government and Investor Relations, to Retire April 1, 2014

HOUSTON, March 17, 2014 (GLOBE NEWSWIRE) -- Marathon Oil Corporation (NYSE:
MRO) announced today that Howard J. Thill, vice president of Corporate,
Government and Investor Relations, has elected to retire effective April 1,
2014, following 12 years of service.

Coincident with Thill's retirement and effective immediately, the Investor
Relations function will move under the direction and leadership of J.R. Sult,
Marathon Oil executive vice president and CFO.Chris Phillips, currently
director of Investor Relations, will continue in his current role and will
report to Sult.

In addition, Marathon Oil's Corporate and Government Relations functions will
be consolidated into a new organization called Corporate Communications, which
will be under the direction of Sylvia J. Kerrigan, Marathon Oil executive vice
president, general counsel and secretary.Paul Weeditz, currently general
manager of Corporate Relations, will assume the new role of director,
Corporate Communications, and will report to Kerrigan.This organizational
change also is effective immediately.

"We want to thank Howard for his dedication and contributions toward Marathon
Oil's success over the past 12 years," said Lee M. Tillman, Marathon Oil
president and CEO. "Howard's leadership of the Company's communications effort
has been essential in delivering our key messages to all stakeholders. He has
also served as our Company's principal liaison with members of the investment
community ensuring that our Company's plans and strategies were effectively
conveyed to our shareholders. We wish him and his family the very best for
continued good health and happiness in the years ahead."

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CONTACT: Media Relations Contacts    
         Lee Warren: 713-296-4103
         John Porretto: 713-296-4102
        
         Investor Relations Contacts
         Howard Thill: 713-296-4140
         Chris Phillips: 713-296-3213
 
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