MPLX Elects Maryann T. Mannen as Chairman of the Board
PR Newswire —
FINDLAY, Ohio, Nov. 4, 2025 /PRNewswire/ -- MPLX LP (NYSE: MPLX) today announced that the board of directors of the general partner of MPLX has elected Maryann T. Mannen, president and chief executive officer and member of the board, as chairman of the board, effective Jan. 1, 2026....