Rowan Companies plc and Ensco plc Announce Early Termination of HSR Waiting Period

Rowan Companies plc (NYSE: RDC) (“Rowan”) and Ensco plc (NYSE: ESV) (“Ensco”) jointly announced today that they have received notice from the Department of Justice and the Federal Trade Commission granting early termination of the waiting period under the U.S. Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended (“HSR Act”), with respect to the proposed combination previously announced on 8 October 2018 pursuant to which Rowan and Ensco will combine. Accordingly, the closing condition with respect to the expiration or termination of the waiting period under the HSR Act has been satisfied. Completion of the transaction remains subject to satisfaction or waiver of certain other conditions, including approval by the shareholders of both Rowan and Ensco along with other regulatory and court approvals.

About Rowan

Rowan is a global provider of contract drilling services with a fleet of 25 mobile offshore drilling units, composed of 21 self-elevating jack-up rigs and four ultra-deepwater drillships. The Company's fleet operates worldwide, including the United States Gulf of Mexico, the United Kingdom and Norwegian sectors of the North Sea, the Middle East, the Mediterranean Sea, and Trinidad. Additionally, the Company is a 50/50 partner in a joint venture with Saudi Aramco, entitled ARO Drilling, that owns a fleet of seven self-elevating jack-up rigs that operate in the Arabian Gulf. The Company's Class A Ordinary Shares are traded on the New York Stock Exchange under the symbol "RDC." For more information on the Company, please visit www.rowan.com.

About Ensco

Ensco plc (NYSE: ESV) brings energy to the world as a global provider of offshore drilling services to the petroleum industry. For more than 30 years, the company has focused on operating safely and going beyond customer expectations. Ensco is ranked first in total customer satisfaction in the latest independent survey by EnergyPoint Research – the eighth consecutive year that Ensco has earned this distinction. Operating one of the newest ultra-deepwater rig fleets and a leading premium jackup fleet, Ensco has a major presence in the most strategic offshore basins across six continents. Ensco plc is an English limited company (England No. 7023598) with its corporate headquarters located at 6 Chesterfield Gardens, London W1J 5BQ. To learn more, visit our website at www.enscoplc.com.