McDermott To Participate At D.A. Davidson Engineering & Construction Conference

McDermott International, Inc. (NYSE: MDR) (“McDermott”) announced today that Stephen M. Johnson, McDermott’s Chairman of the Board, President and Chief Executive Officer, is scheduled to present at the D.A. Davidson’s 11 ^th Annual Engineering & Construction Conference in San Francisco, California on Tuesday, September 11, 2012 at 11:45 a.m. Pacific Time. McDermott invites shareholders and other interested parties to view the slide presentation and to listen to the audio of Mr. Johnson’s presentation, either live or by replay, both of which will be available for a limited period of time over the internet 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 and major energy companies. Operating in approximately 20 countries across the Atlantic, Middle East and Asia Pacific, the Company’s integrated resources include approximately 13,500 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.

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