0001552000-20-000054 Sample Contracts

1,500,000,000 1.750% SENIOR NOTES DUE 2026 $ 1,500,000,000 2.650% SENIOR NOTES DUE 2030

MPLX Lp • August 18th, 2020 • Pipe lines (no natural gas) • New York

• Company
  MPLX Lp
• Filed
  August 18th, 2020
• Industry
  Pipe lines (no natural gas)
• Jurisdiction
  New York

TWENTY-FOURTH SUPPLEMENTAL INDENTURE

Twenty-Fourth Supplemental Indenture • August 18th, 2020 • MPLX Lp • Pipe lines (no natural gas) • New York

• Contract Type
  Twenty-Fourth Supplemental Indenture
• Filed
  August 18th, 2020
• Company
  MPLX Lp
• Industry
  Pipe lines (no natural gas)
• Jurisdiction
  New York

THIS TWENTY-FOURTH SUPPLEMENTAL INDENTURE, dated as of August 18, 2020 (this “Supplemental Indenture”), is between MPLX LP, a limited partnership duly formed and existing under the laws of the State of Delaware (the “Partnership”), and The Bank of New York Mellon Trust Company, N.A., a national banking association, as trustee (the “Trustee”).

TWENTY-THIRD SUPPLEMENTAL INDENTURE

Twenty-Third Supplemental Indenture • August 18th, 2020 • MPLX Lp • Pipe lines (no natural gas) • New York

• Contract Type
  Twenty-Third Supplemental Indenture
• Filed
  August 18th, 2020
• Company
  MPLX Lp
• Industry
  Pipe lines (no natural gas)
• Jurisdiction
  New York

THIS TWENTY-THIRD SUPPLEMENTAL INDENTURE, dated as of August 18, 2020 (this “Supplemental Indenture”), is between MPLX LP, a limited partnership duly formed and existing under the laws of the State of Delaware (the “Partnership”), and The Bank of New York Mellon Trust Company, N.A., a national banking association, as trustee (the “Trustee”).