Michael J. Stover Appointed Vice President of Operations Services for Marathon Oil Corporation

Tue Jan 29, 2013 10:14am EST

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HOUSTON, Jan. 29, 2013 (GLOBE NEWSWIRE) -- Marathon Oil Corporation (NYSE: MRO) announced today
that Michael J. Stover, currently manager of the Company's mid-continent production operations,
has been appointed to the newly established position of vice president, Operations Services
effective Feb. 1, 2013. In this role, Stover will have oversight responsibility for Marathon Oil's
Upstream Development, Technology, Technical Excellence, Global Procurement, Land and Commercial
Services, and Drilling and Completions activities. Stover will be based in Houston and report to
Marathon Oil Corporation chairman, president and CEO Clarence P. Cazalot Jr.

"Establishing this new position and capturing the increased organizational alignment associated
with it is consistent with our ongoing drive to achieve greater efficiencies throughout Marathon
Oil," said Cazalot. "Mike possesses a strong blend of operations, technical and planning
experience and expertise that will play an important role in our ability to further optimize the
contributions of these key services to our continued success."

Stover earned a Bachelor of Science degree in petroleum and natural gas engineering from
Pennsylvania State University in 1986.  He joined Marathon Oil that same year, initially as a
roustabout, followed by operations and reservoir engineering assignments for the Yates Field
located in West Texas. In 1991, he transferred to the Company's international group in Houston and
was responsible for reservoir and economic studies for fields in Ireland, Tunisia, and Norway.
From 1995 thru 2000, Stover was located in Anchorage, Alaska, where he worked both development and
exploration projects associated with Marathon Oil's operations on the Kenai Peninsula. 

In 2000, he joined Marathon Oil's Corporate Strategic Planning group in Houston. In this
assignment, his responsibilities included business planning and corporate portfolio modeling to
support the reorganization of USX Corporation that lead to the establishment of Marathon Oil
Corporation as a standalone company. 

Following that assignment Stover relocated to Aberdeen, Scotland, where he held the position of
European Business Unit Subsurface and Business Planning Manager. In 2005, he relocated to Houston
where assumed the role of East Texas/North Louisiana Asset Manager. In 2006, his area of
responsibility was expanded to include Marathon Oil's Oklahoma oil and gas properties. 

In 2009, he assumed the position of Director of Central Evaluation and Financial Planning. In this
role, Stover was responsible for providing financial and portfolio analysis across the business
enterprise. In late 2011, he assumed his current role of Mid-Continent Asset Manager with
responsibility for Marathon Oil's assets and operations in Oklahoma, East Texas, North Louisiana
and Colorado.

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