Marcela E. Donadio elected to Marathon Oil Corporation Board of Directors

HOUSTON, Nov. 12, 2014 (GLOBE NEWSWIRE) — Marathon Oil Corporation (NYSE: MRO) announced today that

Marcela E. Donadio has been elected to the Company’s board of

directors, effective Dec. 1, 2014.

Donadio, 60, previously served as Americas Oil & Gas Sector

Leader of Ernst & Young LLP, until her retirement this year

after a nearly four-decade career.

“Marathon Oil welcomes Marcela E. Donadio to our Company’s board

of directors,” said Dennis H. Reilley, non-executive chairman of

Marathon Oil’s board of directors. “Marcela’s many years of

experience and leadership in the energy sector, as well as her

strong background in accounting and audit, will be of great benefit

to our board, and we look forward to working with her.”

As Americas Oil & Gas Sector Leader from 2007 until her

retirement, Donadio oversaw more than 3,300 oil and gas

professionals across the Americas, directing firm oil and gas

industry initiatives involving assurance, tax transactions and

advisory services. She also sat on Ernst & Young’s Global Oil

and Gas Leadership Committee, helping set global strategy in

connection with the firm’s oil and gas clients.

Donadio joined Ernst & Young in 1976 as a staff auditor and

served as a senior manager before being made an audit partner in

1989. In 2003, she was named leader for the energy trading and risk

management practice, managing professionals serving Gulf Coast-area

clients in the trading, electricity, exploration and production,

and transmission segments of the energy industry.

Donadio currently serves on the board of National Oilwell Varco.

She is also a trustee for the Great Commission Foundation of the

Episcopal Diocese of Texas and a member of the Massachusetts

Institute of Technology’s Corporation Development Committee.

Donadio served a six-year term as a member of the Texas State Board

of Public Accountancy, chairing its Enforcement Committee.

A graduate of Louisiana State University, Donadio holds a

bachelor’s degree in accounting.

Marathon Oil Corporation is a global exploration and production

company. Based in Houston, Texas, the Company had net proved

reserves at the end of 2013 of approximately 2.2 billion barrels of

oil equivalent in North America, Europe and Africa.

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