$Great Lakes Dredge & Dock(GLDD)$ The Rosen Law Firm is investigating securities claims against Great Lakes Dredge & Dock Corporation, after the Company announced that its financial statements for the quarterly periods ended June 30, 2012 and September 30, 2012 should no longer be relied upon by investors and had to be restated. If you purchased GLDD’s securities prior to March 14, 2013, please visit our website to join the class action: 网页链接