Corporate Governance
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Governance Principles
Provided here are the Governance Principles adopted by the MPLX GP LLC board of directors.
Governance Principles (Amended and Restated effective February 26, 2025)
MPLX Leadership
Board of Directors
MPLX benefits from thoughtful oversight in all matters of governance.
Officers
MPLX is guided by a strategic, passionate leadership team devoted to delivering value for all our stakeholders.
Code of Ethics for Senior Financial Officers
Pursuant to Section 406 of the Sarbanes-Oxley Act of 2002 and its associated regulations, the board of directors of the general partner approved and adopted a Code of Ethics for Senior Financial Officers, which is set forth below.
Code of Business Conduct
The Marathon Petroleum Code of Business Conduct lays the foundation for good business decisions. No single document can list and explain every question or business practice. The words found throughout the code include trust, respect, dignity and honesty and provide overall guidance.
Policies and Guidelines
MPLX has adopted the following corporate governance policies, guidelines and procedures.
Whistleblowing as to Accounting Matters
Pre-Approval of Audit, Audit Related, Tax and Permissible Non-Audit Services
Guidelines for Hiring of Employees or Former Employees of Independent Auditor
Certificate of Limited Partnership
The Certificate of Limited Partnership of MPLX filed with the secretary of state of the state of Delaware on March 27, 2012, as amended, is set forth below.
CEO/CFO Certifications
2024 Certifications
CEO/CFO Certifications for 10-Q for Quarter Ending March 31, 2024
CEO/CFO Certifications for 10-Q for Quarter Ending June 30, 2024
CEO/CFO Certifications for 10-Q for Quarter Ending September 30, 2024
CEO/CFO Certifications for 10-Q for Year Ending December 31, 2024
Previous Certifications
2023
CEO/CFO Certifications for 10-Q for Quarter Ending March 31, 2023
CEO/CFO Certifications for 10-Q for Quarter Ending June 30, 2023
CEO/CFO Certifications for 10-Q for Quarter Ending September 30, 2023
CEO/CFO Certifications for 10-K for Year Ending December 31, 2023
2022
CEO/CFO Certifications for 10-Q for Quarter Ending March 31, 2022
CEO/CFO Certifications for 10-Q for Quarter Ending June 30, 2022
CEO/CFO Certifications for 10-Q for Quarter Ending September 30, 2022
CEO/CFO Certifications for 10-K for Year Ending December 31, 2022
2021
CEO/CFO Certifications for 10-Q for Quarter Ending March 31, 2021
CEO/CFO Certifications for 10-Q for Quarter Ending June 30, 2021
CEO/CFO Certifications for 10-Q for Quarter Ending September 30, 2021
CEO/CFO Certifications for 10-K for Year Ending December 31, 2021
2020
CEO/CFO Certifications for 10-Q for Quarter Ending March 31, 2020
CEO/CFO Certifications for 10-Q for Quarter Ending June 30, 2020
CEO/CFO Certifications for 10-Q for Quarter Ending September 30, 2020
CEO/CFO Certifications for 10-K for Year Ending December 31, 2020
2019
CEO/CFO Certifications for 10-Q for Quarter Ending March 31, 2019
CEO/CFO Certifications for 10-Q for Quarter Ending June 30, 2019
CEO/CFO Certifications for 10-Q for Quarter Ending September 30, 2019
CEO/CFO Certifications for 10-K for Year Ending December 31, 2019
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Contact Us
Investor Relations
Institutional Investors:
(419) 421-2071
[email protected]
Individual Unitholders:
Unitholder Services
MPLX LP
200 East Hardin Street
Findlay, Ohio 45840
(419) 421-2414