UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-33225 Great Lakes Dredge & Dock Corporation (Exact name of registrant as specified in its charter) Delaware 20-5336063 (State or oth ...

Great Lakes Dredge & Dock Corporation (NASDAQ:GLDD) Q4 2019 Earnings Conference Call February 19, 2020 10:00 AM ET Company Participants Tina Baginskis - Director, Investor Relations Lasse Petterson - Chief Executive Officer Mark Marinko - Senior Vice President and Chief Financial Officer Conference Call Participants Jon Tanwanteng - CJS Securities DeForest Hinman - Walthausen & Co. LLC Nelson Obus - Wynnefield Capital, Inc. Christian Bliska - NOBLE Capital William Feeley - Feeley Capital Markets Tim Abbott ...

Great Lakes Dredge & Dock Corporation (NASDAQ:GLDD) Q3 2019 Earnings Conference Call November 5, 2019 10:00 AM ET Company Participants Tina Baginskis - IR Lasse Petterson - CEO & Director Mark Marinko - SVP & CFO Conference Call Participants Peter Lukas - CJS Securities Charles Fratt - NOBLE Capital Markets DeForest Hinman - Walthausen & Co. Operator Ladies and gentlemen, thank you for standing by, and welcome to the Q3 2019 Great Lakes Dredge & Dock Corp Earnings Conference Call. [Operator Instructions]. I ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION (Exact name of registrant as specified in its charter) Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-33225 Great Lakes Dredge & Dock Corporation Delaware 20-5336063 (State or other ...

GREAT LAKES DREDGE & DOCK CORPORATION INVESTOR PRESENTATION AUGUST 2019 GREAT LAKES DREDGE & DOCK CORPORATION > INFRASTRUCTURE SOLUTIONS INFO@GLDD.COM | GLDD.COM SAFE HARBOR Forward-Looking Statements This presentation includes "forward-looking" statements within the meaning of Section 27A of the Securities Act of 1933, Section 21E of the Securities Exchange Act of 1934, the Private Securities Litigation Reform Act of 1995 or in releases made by the SEC, all as may be amended from time to time. Such stateme ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-33225 Great Lakes Dredge & Dock Corporation (Exact name of registrant as specified in its charter) Delaware 20-5336063 (State or other juri ...

Great Lakes Dredge & Dock Corporation (NASDAQ:GLDD) Q2 2019 Results Conference Call July 31, 2019 10:00 AM ET Company Participants Kathy O'Halloran - Group Admin Manager and Financial Controller Lasse Petterson - Chief Executive Officer Mark Marinko - Chief Financial Officer Conference Call Participants Jon Tanwanteng - CJS Securities Matt Baxter - Wynne Capital Poe Fratt - NOBLE Capital Markets Gerry Heffernan - Walthausen Operator Good morning, ladies and gentlemen, and welcome to the quarter two 2019 Gr ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (Exact name of registrant as specified in its charter) For the quarterly period ended March 31, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-33225 Great Lakes Dredge & Dock Corporation Delaware 20-5336063 (State or other jur ...

Great Lakes Dredge & Dock Corporation (NASDAQ:GLDD) Q1 2019 Earnings Conference Call April 30, 2019 10:00 AM ET Company Participants Abby Sullivan – Manager of Investor Relations Lasse Petterson – Chief Executive Officer Mark Marinko – Chief Financial Officer Conference Call Participants Poe Fratt – Noble Capital Markets DeForest Hinman – Walthausen & Co. Jon Tanwanteng – CJS Securities Matt Baxter – Wynne Capital Operator Good day, ladies and gentlemen, and welcome to the Great Lakes Dredge & Dock Corporat ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-33225 Great Lakes Dredge & Dock Corporation (Exact name of registrant as specified in its charter) Delaware 20-5336063 (State or oth ...