MPLX LP 17,300,000 Common Units Representing Limited Partner Interests UNDERWRITING AGREEMENTUnderwriting Agreement • October 31st, 2012 • MPLX Lp • Pipe lines (no natural gas) • New York
Contract Type FiledOctober 31st, 2012 Company Industry Jurisdiction
MPLX LP [•] Common Units Representing Limited Partner Interests UNDERWRITING AGREEMENTUnderwriting Agreement • October 9th, 2012 • MPLX Lp • Pipe lines (no natural gas) • New York
Contract Type FiledOctober 9th, 2012 Company Industry JurisdictionEach of the undersigned, Gary R. Heminger, Chief Executive Officer of MPLX GP LLC, a Delaware limited liability company (the “General Partner”) and the general partner of MPLX LP, a Delaware limited partnership (the “Partnership”), and Donald C. Templin, Vice President and Chief Financial Officer of the General Partner, on behalf of the Partnership, does hereby certify pursuant to Section 6(h) of that certain Underwriting Agreement dated [•], 2012 (the “Underwriting Agreement”) among the Partnership, the General Partner, MPLX Logistics Holdings LLC, a Delaware limited liability company, MPLX Operations LLC, a Delaware limited liability company, MPC Investment LLC, a Delaware limited liability company, and, on behalf of the several Underwriters named therein, UBS Securities LLC, Merrill Lynch, Pierce, Fenner & Smith Incorporated and Morgan Stanley & Co. LLC, that as of [•], 2012: