

About This Report
We seek to further the environmental, social and governance (ESG) progress of our business and the sustainability of the communities where we live and work. Our 2019 Sustainability Report demonstrates our accountability for addressing challenges and risks affecting our business.
In this report, we provide information about our nonfinancial and financial performance, supported by quantitative metrics and qualitative examples. We’ve designed it to be a one-stop resource providing accurate information for a wide range of stakeholders, including ESG rating and ranking services, which we believe is consistent with our strategy to be the lowest-cost, highest-margin independent exploration and production company.
We select ESG performance indicators using the Sustainability Reporting Guidance for the Oil & Gas Industry. This joint publication of IPIECA, the American Petroleum Institute (API) and the International Association of Oil & Gas Producers (IOGP) provides a reporting framework for the petroleum industry. Our approach is also informed by the Task Force on Climate-related Financial Disclosures (TCFD), the Sustainability Accounting Standards Board (SASB) and the Global Reporting Initiative (GRI). We recognize that ESG performance reporting is a rapidly evolving area and we will continue to enhance our reporting as best practices are identified. However, we are committed to the efficiency and clarity of publishing a comprehensive report that is the definitive ESG source document for our company.
All information and performance data in this report relate to Marathon Oil operations, unless otherwise stated. We include certain information on non-operated assets and equity method investments, such as Equatorial Guinea LNG Holdings Limited (EG LNG).
This report was reviewed by Marathon Oil subject-matter experts, legal and accounting staff, executives, the board of directors and a third-party ESG consultant. The financial highlights were sourced directly from the 2019 Annual Report on Form 10-K filed with the U.S. Securities and Exchange Commission (SEC). ESG data is non-GAAP and not audited.
For more information on this report, please contact the Marathon Oil Sustainability Manager at: ESGReport@marathonoil.com.
What We Report On
Information included in this report was determined based on a review of risks and issues identified during our Enterprise Risk Management process and in discussions with Marathon Oil managers and subject-matter experts; investors; business partners, industry associations and nongovernmental organizations; and nonprofit and community partners. We also benchmarked reporting practices of peer companies, and reviewed investment reports and media coverage.




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