About This Report

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Marathon Oil Corporation’s 2015 Living Our Values Corporate Sustainability Report illustrates our efforts to advance our nonfinancial performance and to promote economic, social and environmental sustainability where we live and work. We provide examples of how we are “living our values” – to be healthy and safe, environmental stewards, open and honest, community partners and results focused – through our business activities.

Unless otherwise stated, all information and performance data relate to exploration and production operations. In some cases, we include information on our non-operated assets, such as Equatorial Guinea LNG Holdings Limited (EG LNG) that is material to our corporate sustainability performance.

Our reporting follows the Oil & Gas Industry Guidance on Voluntary Sustainability Reporting, a joint publication of IPIECA, the American Petroleum Institute (API) and the International Association of Oil & Gas Producers (IOGP). This framework for the petroleum industry helps Marathon Oil select indicators to demonstrate our performance related to governance, society, the workplace and the environment. Our approach to reporting is also informed by the Global Reporting Initiative  (GRI) Sustainability Reporting Guidelines. We include quantitative and qualitative metrics to provide relevant and meaningful information about our operations and nonfinancial performance.

This report was reviewed by Marathon Oil subject matter experts, legal and accounting staff, executives and the Board of Directors. It was not evaluated by any third party or external assurance agency, except for the financial and operational highlights excerpted from the 2015 Form 10-K Annual Report.

Materiality Determination

Report materiality was based on a review of risks identified during the Enterprise Risk Management process and on engagements with Marathon Oil managers and subject matter experts; socially responsible investors (SRIs) and other investors; business partners; industry associations; nongovernmental organizations; and nonprofit and community partners. Investment reports and media coverage also informed the materiality determination. In addition, we reviewed peer company reports to benchmark our reporting practices. These internal and external perspectives help us identify, understand and consider the risks and opportunities associated with new and emerging issues, regulations, standards and leadership practices.


Marathon Oil Corporation
The Office of Corporate Communications
5555 San Felipe Street
Houston, TX 77056-2723 USA
Telephone: +1 713-296-3911Phone icon
Email: CSRReport@marathonoil.com

Forward-Looking Statements
This report contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. These are statements, other than statements of historical fact, that give current expectations or forecasts of future events, including, without limitation: Marathon Oil’s operational and financial goals and strategies, including planned expenditures, drilling plans and projects, capital discipline, continuous improvement, reducing operational risk, workforce reductions, non-core asset sales, and emissions mitigation; our ability to successfully effect those strategies and the expected timing and results thereof; Marathon Oil’s financial and operational outlook, and ability to fulfill that outlook; expectations regarding future economic and market conditions and their impact on Marathon Oil; our ability to accelerate production when commodity prices rebound; our ability to expand our operations to create value for shareholders; and our international projects and the expected timing and results thereof. While we believe the assumptions concerning future events are reasonable, a number of factors could cause results to differ materially from those projected, including, but not limited to: conditions in the oil and gas industry, including supply/demand levels and the resulting impact on price; changes in political or economic conditions in the jurisdictions in which we operate; capital available for exploration and development; well production timing; availability of drilling rigs, materials and labor; difficulty obtaining necessary approvals and permits; non-performance by third parties of contractual obligations; unforeseen hazards such as weather conditions, acts of war or terrorism and the governmental or military response thereto; cyber-attacks; changes in safety, health, environmental and other regulations; other geological, operating and economic considerations; and the risk factors, forward-looking statements and challenges and uncertainties described in Marathon Oil’s Annual Report on Form 10-K for the year ended December 31, 2015, Quarterly Reports on Form 10-Q and other public filings and press releases, available at www.MarathonOil.com. We undertake no obligation to revise or update any forward-looking statements as a result of new information, future events or otherwise.

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