MPLX30.42 (0.63 ) HOME ABOUT MPLX INVESTORS MARATHON PIPE LINE MARKWEST TARIFFS CONTACT US MPLX > Investors > Corporate Governance INVESTORS Corporate Governance Governance Principles Board of Directors Board Committees and Charters Communications from Interested Parties Officers Code of Ethics for Senior Financial Officers Code of Business Conduct Policies and Guidelines Certificate of Limited Partnership CEO/CFO Certifications Calendar of Events SEC Filings Press Releases Earnings Capsule Quarterly Investor Packet Stock Information Annual Report & 10-K Sustainability Reporting Unitholder Services Events and Presentations Investor FAQs Tax Reporting Package Email Alerts Corporate Governance Provided here are the Governance Principles adopted by the MPLX GP LLC board of directors. Governance Principles (Amended and Restated effective February 25, 2020) © 2020 MPLX LP MPLX Marathon Petroleum Corporation About MPLX Logistics and Storage Gathering and Processing Sustainability Board of Directors Officers MPLX Fact Sheet Image Gallery Terms of Use Privacy Policy Investors Corporate Governance Calendar of Events SEC Filings Press Releases Earnings Capsule Quarterly Investor Packet Stock Information Annual Report & 10-K Sustainability Reporting Unitholder Services Events and Presentations Investor FAQs Tax Reporting Package Email Alerts Contact Us Investor Relations Unitholder Services Corporate Public Affairs MPC Supply Chain Customer Portal MarkWest Visit the MarkWest site Pipeline Launcher/Receiver Emission Reduction Systems Marathon Pipe Line For Operation, Environmental and Safety Info: Marathon Pipe Line LLC