GLDD Appoints New Senior Vice President (USA)

June 23, 2014

Great Lakes Dredge & Dock Corporation announced that Mark Marinko has been appointed Senior Vice President and Chief Financial Officer effective today.

Mr. Marinko joins the Company to fill the role vacated in April 2014 and held in interim by the Vice President and Controller, Katherine Hayes. Mr. Marinko will report to the Chief Executive Officer, Jonathan Berger.

Mr. Marinko starts at Great Lakes with a strong background in operations and finance working for TransUnion, LLC through August 2013. Mr. Marinko was most recently President of the Consumer Services division at TransUnion leading the direct to consumer and business market, customer service, consumer compliance and marketing for the credit information company.

Prior to his position as president, Mr. Marinko has been in increasing accounting and financial roles as Controller and Vice President of Finance at TransUnion since 1996. Prior to TransUnion, Mr. Marinko served as controller of Official Airline Guides.

In his over 30 years of professional experience, Mr. Marinko has held roles specializing in accounting, finance, sales, systems and business operations.

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Press Release, June 23, 2014