The law firm of Federman & Sherwood announces an investigation on behalf of shareholders of Great Lakes Dredge & Dock Corporation (NASDAQ: GLDD) (“GLDD” or “Company”) into allegations that the Company has violated federal securities laws. With the resignation of GLDD’s Chief Operating Officer (“COO”), also came an announcement of the Company’s restatement of its financials and an admission by GLDD that it violated Generally Accepted Accounting Practices (“GAAP”) in its revenue recognition during the second and third quarters of 2012. Following these announcements, GLDD stock prices fell more than 30% on March 14, 2013. If you currently own common stock in GLDD, purchased your shares of common stock between August 7, 2012 and March 14, 2013, and have information to assist in our investigation of this transaction, or have any questions or concerns regarding this notice or preservation of your rights, please contact William B. Federman. Federman & Sherwood is a nationwide law firm specializing in representing investors in securities, derivative and merger-related shareholder class actions and has been appointed as lead counsel in multiple complex cases.