McDermott to Participate at Investor Conference

McDermott International, Inc. (NYSE: MDR) (“McDermott”) announced that Stephen M. Johnson, McDermott’s Chairman of the Board, President and Chief Executive Officer, will present at Howard Weil’s Energy Conference in New Orleans, Louisiana on March 20, 2013 at 1:15 p.m. Central time. McDermott will post the slides to be used prior to the presentation at www.mcdermott.com in the investor relations section.

About the Company

McDermott is a leading engineering, procurement, construction and installation (“EPCI”) company focused on executing complex offshore oil and gas projects worldwide. Providing fully integrated EPCI services for upstream field developments, the Company delivers fixed and floating production facilities, pipelines and subsea systems from concept to commissioning. McDermott’s customers include national, major integrated and other energy companies. Operating in approximately 20 countries across the Atlantic, Middle East and Asia Pacific, the Company’s integrated resources include approximately 14,000 employees and a diversified fleet of marine vessels, fabrication facilities and engineering offices. McDermott has served the energy industry since 1923. To learn more, please visit McDermott’s website on the Internet at www.mcdermott.com.