ROWAN COMPANIES PLC SHAREHOLDER ALERT

Rigrodsky & Long, P.A. Announces Investigation of Merger

Rigrodsky & Long, P.A. announces that it is investigating potential legal claims against the board of directors (“Board”) of Rowan Companies plc (“Rowan” or the “Company”) (NYSE: RDC) related to the Company’s entry into an agreement to merge with Ensco plc (“Ensco”) (NYSE: ESV) in a transaction announced on October 8, 2018 (the “Proposed Transaction”).

On October 7, 2018, the Board caused Rowan to enter into a transaction agreement (the “Transaction Agreement”) with Ensco. Pursuant to the terms of the Transaction Agreement, shareholders of Rowan will receive 2.215 shares of Ensco common stock for each share of Rowan common stock.

On October 30, 2018, Rowan filed a preliminary proxy statement (“Proxy Statement”) with the United States Securities and Exchange Commission (“SEC”) in connection with the Proposed Transaction, which recommends that Rowan’s shareholders vote in favor of the Proposed Transaction. Rigrodsky & Long, P.A. is investigating possible violations of law related to the Proxy Statement, including whether the Proxy Statement omits material information with respect to the Proposed Transaction.

If you own common stock of Rowan and purchased any shares before October 8, 2018, if you would like to learn more about this investigation, or if you have any questions concerning this announcement or your rights or interests, please contact Seth D. Rigrodsky or Gina M. Serra toll-free at [phone], by e-mail at [e-mail], or at https://www.rigrodskylong.com/offices-contact.

Rigrodsky & Long, P.A., with offices in Delaware, New York, and California, has recovered hundreds of millions of dollars on behalf of investors and achieved substantial corporate governance reforms in numerous cases nationwide, including federal securities fraud actions, shareholder class actions, and shareholder derivative actions.

Attorney advertising. Prior results do not guarantee a similar outcome.

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