Executing With Integrity

Operating with Integrity

Integrity is Expected

Integrity is a Core Value at Marathon, guiding how we operate and hold ourselves accountable across all aspects of our business. Since our founding, MPC has been built on a strong foundation of values, with honesty and integrity at the center of everything we do. We are committed to integrating sustainability into our decision-making and upholding accountable and transparent governance. We understand that trust is essential to our success, and we remain committed to conducting business with integrity in everything we do. 

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Old Marathon Petroleum Gas Station

OEMS Wheel Graphic

Operational Excellence Management System

We believe that everyone – including our employees, contractors and business partners – shares responsibility for our Health, Environment, Safety, Security and Product Quality and sustainability performance. MPC’s Operational Excellence Management System framework aligns with the intent of RC14001® and ISO 9001 requirements and provides a systemic approach to advancing performance by outlining requirements that will enable us to achieve our goals and ensure our long-term success.

Learn More About Our Management System

Critical Oversight

MPC’s Board of Directors provides oversight for our company operations and activities, as well as our strategic direction, including sustainability objectives. Subcommittees are in place to assist and advise the full board about a variety of matters including financial and accounting, regulatory compliance, compensation practices and programs, governance issues, sustainability and more.

Learn About our Board Committees

Maryann Mannen

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Human Rights and Core Values

At MPC, our Core Values, reinforced by our Board of Directors and executive management team, and promoted throughout our business and operations, are Safety and Environmental Stewardship, Integrity, Inclusion, Collaboration and Excellence. With these values as the foundation of our corporate culture, we work to make a positive difference in the communities where we have the privilege to operate. We respect the human, cultural and legal rights of all individuals and communities, including but not limited to our value chain partners, and promote the goals and principles of the United Nations Universal Declaration of Human Rights. Our commitment extends to the fair treatment and meaningful involvement of all people, including indigenous people, regardless of race, color, national origin or income level.

To learn more about policies and disclosures that reflect our commitments regarding human rights and stakeholder engagement visit the Reports and Policies page of this website.

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Cover image for 2025 MPC Sustainability Report