MarkWest Energy Partners Announces Pricing of an Upsized Public Offering of Additional $650 Million of 4.875% Senior Notes Due 2024

DENVER--(BUSINESS WIRE)--MarkWest Energy Partners, L.P. (NYSE: MWE) (the “Partnership”) and its subsidiary MarkWest Energy Finance Corporation (“Finance Corp.”) announced today that they have priced an upsized public offering of an additional $650 million of their outstanding 4.875% senior unsecured notes due 2024 (the “Additional Notes”). The Additional Notes will be issued at 101.625% of par plus accrued and unpaid interest from November 21, 2014, resulting in a yield to worst of 4.66%. The offering of the Additional Notes is expected to settle on March 3, 2015, subject to customary closing conditions.