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 September 30, 2020 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 ...

Great Lakes Dredge & Dock Corp (NASDAQ:GLDD) Q3 2020 Earnings Conference Call November 4, 2020 10:00 AM ET Company Participants Tina Baginskis - Director of Investor Relations Lasse Petterson - Chief Executive Officer and President Mark Marinko - Chief Financial Officer Conference Call Participants Jon Tanwanteng - CJS Securities DeForest Hinman - Walthausen & Company Poe Fratt - Noble Capital Max Batzer - Wynnefield Capital Operator Good morning, ladies and gentlemen, and welcome to the Q3 Great Lakes Dred ...

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, 2020 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 2020 Earnings Conference Call August 4, 2020 10:00 AM ET Company Participants Tina Baginskis - Director-Investor Relations Lasse Petterson - Chief Executive Officer Mark Marinko - Chief Financial Officer Conference Call Participants Poe Fratt - Noble Financial Capital Markets DeForest Hinman - Walthausen & Co. Richard Glass - Glass Capital Jon Tanwanteng - CJS Securities Matt Baxter - Wynne Capital Operator Ladies and gentlemen thank you for standing by ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FORM 10-Q For the quarterly period ended March 31, 2020 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 jur ...

Great Lakes Dredge & Dock Corporation (NASDAQ:GLDD) Q1 2020 Earnings Conference Call May 5, 2020 10:00 AM ET Company Participants Tina Baginskis – Director-Investor Relations Lasse Petterson – Chief Executive Officer Mark Marinko – Chief Financial Officer Conference Call Participants Jon Tanwanteng – CJS Securities Poe Fratt – Noble Financial Capital Markets Greg Bennett – Morgan Stanley Richard Glass – Glass Capital Operator Good morning ladies and gentlemen and welcome to the Q1 2020 Great Lakes Dredge & ...

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 ...