TABLE OF CONTENTS COMPANY OVERVIEW AND KEY FACTS MERGERS & ACQUISITIONS --Mergers and Acquisitions – Overview --Mergers and Acquisitions – Deal reports PARTNERSHIP --Partnership – Overview --Partnership – Deal reports CAPITAL RAISING --Capital Raising – Overview --Capital Raising – Deal reports DIVESTMENTS --Divestments – Overview --Divestments – Deal reports --Private Equity and Ownership – Deal reports APPENDIX --About Datamonitor Financial Deals Database --Deal Definition and Methodology --About Datamonitor --Datamonitor Professional Services Knowledge Center LIST OF TABLES --MarkWest Energy Partners activity by deal type – volume (2011 -YTD2015) --MarkWest Energy Partners M&A average deal size – value ($m) (2011 -YTD2015) --MarkWest Energy Partners legal advisor ranking by value ($m) --MarkWest Energy Partners financial advisor ranking by value ($m) --Top Deals(2011 -YTD2015) --MarkWest Energy Partners targets and partners (2011 -YTD2015) --MarkWest Energy Partners M&A volume and value trend (2011-YTD2015) --MarkWest Energy Partners M&A activity by geography (2011-YTD2015) --MarkWest Energy Partners partnership volume and value trend (2011-YTD2015) --MarkWest Energy Partners partnership trend by key deal type (2011-YTD2015) --MarkWest Energy Partners capital raising volume and value trend (2011-YTD2015) --MarkWest Energy Partners capital raising by deal type (2011-YTD2015) --MarkWest Energy Partners divestments volume and value trend (2011-YTD2015) --MarkWest Energy Partners divestments activity by geography (2011-YTD2015) LIST OF FIGURES --MarkWest Energy Partners activity by deal type - volume (2011-YTD2015) --MarkWest Energy Partners M&A average deal size - value ($m) --MarkWest Energy Partners M&A volume and value trend (2011-YTD2015) --MarkWest Energy Partners M&A activity by geography (2011-YTD2015) --MarkWest Energy Partners partnership volume and value trend (2011-YTD2015) --MarkWest Energy Partners partnership trend by key deal type (2011-YTD2015) --MarkWest Energy Partners capital raising volume and value trend (2011-YTD2015) --MarkWest Energy Partners capital raising by deal type (2011-YTD2015) --MarkWest Energy Partners divestments volume and value trend (2011-YTD2015) --MarkWest Energy Partners divestments by geography (2011-YTD2015)

MarkWest Energy Partners, L.P.