8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): June 6, 2013

Great Lakes Dredge & Dock Corporation

(Exact name of Registrant as specified in its charter)

Delaware	001-33225	20-5336063
(State or other jurisdiction of Incorporation or Organization)	(Commission File Number)	(I.R.S. Employer Identification No.)

2122 York Road

Oak Brook, Illinois 60523

(Address of Principal Executive Offices)

(630) 574-3000

(Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

¨ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 7.01 — Regulation FD Disclosure.

Great Lakes Dredge & Dock Corporation (NASDAQ:GLDD) issued a press release announcing Jonathan Berger, Chief Executive Officer, will be presenting at the Deutsche Bank Global Industrials and Basic Materials Conference in Chicago on Thursday, June 13, 2013.

The presentation is scheduled to begin at 3:40 p.m. (C.D.T.). A live webcast of the presentation will be available on the Investor Relations section of the Company’s website at www.gldd.com. The webcast and accompanying slide presentation will be archived on the website within 24 hours and will be available for at least two weeks.

The information in this report (including Exhibit 99.1) is being furnished pursuant to Item 7.01 and shall not be deemed to be filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise be subject to the liabilities of that section, nor shall it be deemed to be incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act.

Item 9.01 — Financial Statements and Exhibits

(d) Exhibits

The following exhibit is furnished herewith:

99.1 Press Release of Great Lakes Dredge & Dock Corporation dated June 6, 2013.

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SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	GREAT LAKES DREDGE & DOCK CORPORATION
	/s/    William S. Steckel
Date: June 6, 2013	William S. Steckel
	Senior Vice President and Chief Financial Officer

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EXHIBIT INDEX

Number	Exhibit
99.1	Press Release of Great Lakes Dredge & Dock Corporation dated June 6, 2013.

EX-99

EX99.1

News from Great Lakes Dredge & Dock Corporation   For further information contact: Katie Hayes, Director of Investor Relations @ 630-574-3012

Great Lakes Dredge & Dock Corporation to Present at Deutsche Bank Global

Industrials and Basic Materials Conference

Oak Brook, Illinois – June 6, 2013 — Great Lakes Dredge & Dock Corporation (NASDAQ:GLDD) announced Jonathan Berger, Chief Executive Officer, will be presenting at the Deutsche Bank Global Industrials and Basic Materials Conference in Chicago on Thursday, June 13, 2013.

The presentation is scheduled to begin at 3:40 p.m. (C.D.T.). A live webcast of this presentation will be available on the Investor Relations section of the Company’s website at www.gldd.com. The webcast and accompanying slide presentation will be archived on the website within 24 hours and will be available for at least two weeks.

The Company

Great Lakes Dredge & Dock Corporation is the largest provider of dredging services in the United States and the only U.S. dredging company with significant international operations. The Company is also one of the largest U.S. providers of commercial and industrial demolition and remediation services primarily in the Northeast and Midwest. The Company owns a 50% interest in a marine sand mining operation in New Jersey that supplies sand and aggregate for road and building construction and a 50% interest in an environmental service operation with the ability to remediate soil and dredged sediment treatment. Great Lakes employs over 150 degreed engineers, most specializing in civil and mechanical engineering, which contributes to its 123-year history of never failing to complete a marine project. Great Lakes has a disciplined training program for engineers that ensures experienced-based performance as they advance through Company operations. Great Lakes also owns and operates the largest and most diverse fleet in the U.S. industry, comprised of over 200 specialized vessels.