TWENTY-FIFTH SUPPLEMENTAL INDENTURESupplemental Indenture • March 14th, 2022 • MPLX Lp • Pipe lines (no natural gas) • New York
THIS TWENTY-FIFTH SUPPLEMENTAL INDENTURE, dated as of March 14, 2022 (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”).
MPLX LP as Issuer, and MPLX GP LLC as General Partner, $1,500,000,000 4.950% SENIOR NOTES DUE 2052 UNDERWRITING AGREEMENTUnderwriting Agreement • March 14th, 2022 • MPLX Lp • Pipe lines (no natural gas) • New York
