NYSE
MWE

MarkWest Energy Partners, Inc.

Shareholder Corporation Litigation

Rigrodsky & Long, P.A. Announces Investigation Of MarkWest Energy Partners, Inc. (NYSE: MWE) Buyout

Rigrodsky & Long, P.A. announces that it is investigating potential legal claims against the board of directors of MarkWest Energy Partners, Inc. (“MarkWest” or the “Company”) (NYSE: MWE) regarding possible breaches of fiduciary duties and other violations of law related to the Company’s entry into an agreement to be acquired by MPLX LP (“MPLX”) (NYSE: MPLX), in a transaction valued at approximately $20 billion.

Under the terms of the agreement, unitholders of MarkWest will receive 1.09 MPLX common units and a one-time cash payment of approximately $3.37 per MarkWest common unit.  Based on MPLX’s closing price on July 10, 2015, MarkWest unitholders would have received compensation valued at approximately $78.63 per unit.

The investigation concerns whether MarkWest’s board of directors failed to adequately shop the Company and obtain the best possible value for MarkWest’s shareholders before entering into an agreement with MPLX Street.  According to Yahoo! Finance, at least one analyst has issued a price target for MarkWest stock at $86.00 per unit.

If you own the common stock of MarkWest and purchased your shares before July 13, 2015, if you have information or would like to learn more about these claims, or if you wish to discuss these matters or have any questions concerning this announcement or your rights or interests with respect to these matters, please contact Seth D. Rigrodsky or Gina M. Serra at Rigrodsky & Long, P.A., 2 Righter Parkway, Suite 120, Wilmington, DE 19803, by telephone at (888) 969-4242; by e-mail to info@rl-legal.com.

Rigrodsky & Long, P.A., with offices in Wilmington, Delaware and Garden City, New York, regularly prosecutes securities class, derivative and direct actions, shareholder rights litigation and corporate governance litigation, on behalf of shareholders in states and federal courts throughout the United States.

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