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Mark Marinko is the Senior Vice President and Chief Financial Officer at Great Lakes Dredge & Dock Corporation. Mark has been in this role since January 2014 and is responsible for accounting, finance, human resources and information technology for the largest dredging company in the United States.

Prior to joining Great Lakes Dredge & Dock Corporation, Mark was the President-Consumer Services at TransUnion from March 2004 to December 2013. In this role, they were responsible for a $250M business unit that included direct-to-consumer and business-to-business sales, customer service operations, and corporate marketing. Mark has also held the positions of Vice President Finance and Controller at TransUnion from January 1996 to December 2004 and January 1986 to December 1996 respectively.

Mark Marinko's educational career began with him receiving a Bachelor of Arts from Augustana College in Accounting and Business Administration. Mark then went on to get a certification from CPA-Illinois in 1985 and later from NACD (National Association of Corporate Directors) in 2018 as a NACD Fellow.

They are on a team with Paul Lamourie - Vice President, Hopper Dredging, John F. Karas - Senior Vice President - Estimating, and Russell F. Zimmerman - Vice President - South Atlantic Area Manager. Mark Marinko reports to Lasse Petterson, CEO.