COVID-19 RESPONSE: GLDD Memo to Partners, Clients & Stakeholders CLICK TO VIEW 630.574.3000 info@gldd.com HOME OUR COMPANY PROJECTS SAFETY INVESTORS MEDIA CAREERS CONTACT Great Lakes Dredge & Dock Co., nation’s largest provider of dredging services, moving headquarters to Houston Great Lakes Dredge & Dock Co. (NASDAQ: GLDD) announced today it is moving its corporate headquarters to Houston, the latest milestone for what began in 1890 as a fledgling Chicago marine construction firm and has since grown into the country’s largest provider of dredging services. Our Story GLDD is North America’s dredging industry leader, the largest provider of marine dredging, and we have a long history of performing significant international projects. GLDD owns and operates a diverse dredging fleet comprised of numerous specialized maritime vessels, and operates marine yards in five locations nationwide. Our Projects Ports & Harbors Coastal Protection Coastal Restoration International Inland Dredging Our People GLDD’s business is unique and offers a vibrant culture, dynamic work environments, and career growth opportunities. We believe the talent, expertise, and effort of our employees to be the driving force behind our proven history of excellence for 130 years. GLDD SUPPORTS SEA TURTLE CONSERVATION Georgia Sea Turtle Center – Jekyll Island, Georgia Great Lakes’ CEO Lasse Petterson, along with Vice President of Government Relations, Bill Hanson, and Savannah Harbor Expansion Project Manager, Armand Riehl, met with associates of the Georgia Sea Turtle Center (GSTC) and presented them with funding to support the purchase of a new X-ray machine, a crucial piece of equipment in the protection and well-being of sea turtles. The GSTC, operated by the Jekyll Island Authority, is a conservation program that aims to promote sea turtle awareness. The group is “committed to increasing awareness of habitat and wildlife conservation challenges, promoting responsibility for ecosystem health, and empowering individuals to act locally, regionally, and globally to protect the environment.” GLDD is proud to partner with GSTC and support their sea turtle conservation efforts. READ MORE ABOUT OUR CONSERVATION SUPPORT Our Projects From port deepening to channel maintenance and beach restoration to barrier islands, Great Lakes Dredge & Dock does it all. Visit the categories below to learn about our completed projects and discover how we’re helping shape the world. All Coastal Protection Coastal Restoration Inland Dredging International Ports and Harbors GLDD CEO, Lasse Petterson, shakes hands with Port of Corpus Christi CEO, Sean Strawbridge Port Deepening Feature 2, Ports and Harbors Coney Island Coastal Protection Arthur Kill Ports and Harbors Scofield Island Coastal Restoration Deer Island Inland Dredging Big Bend Channel – Tampa Bay, Florida Port Deepening, Ports and Harbors East Hidd Social Housing International Sandag Coastal Protection 1234Next Our Latest News Great Lakes Reports Third Quarter Results Nov 3, 2021 Great Lakes Reports Third Quarter Results PDF Version Third quarter net income of $13.8 million Third quarter adjusted EBITDA of $32.2 million Backlog of $598.5 million at September 30, 2021 HOUSTON, Nov. 02, 2021 (GLOBE NEWSWIRE) -- Great Lakes Dredge & Dock... View Full Story Great Lakes Dredge & Dock Corporation Appoints Scott Kornblau as Senior Vice President and Chief Financial Officer Oct 1, 2021 HOUSTON – [Oct. 1, 2021] – Great Lakes Dredge & Dock Co. (NASDAQ:GLDD), the nation’s largest provider of dredging servicers, has appointed Scott Kornblau as its Senior Vice President and Chief Financial Officer effective immediately. In his role, Kornblau will be... View Full Story Damen & Conrad Shipyard Enter License Agreement to Build First US Multi Cats For Great Lakes Dredge & Dock Jul 8, 2021 Damen Shipyards Group has concluded a licence agreement with US-based Conrad Industries. The agreement will see the Conrad Shipyard LLC construct two Damen Multi Cats 3013 for Great Lakes Dredge & Dock Corporation. The two vessels covered by this agreement will be... View Full Story Read more of GLDD's latest news GLDD is North America’s dredging industry leader, the largest provider of marine dredging, and the only U.S. company with substantial overseas operations. GLDD owns and operates a diverse dredging fleet comprised of numerous specialized maritime vessels, and operates marine yards in five locations nationwide.  Headquarters: 9811 Katy Freeway, Suite 1200 Houston, TX 77024  Phone: 346-359-1010  Email: info@gldd.com © 2021 Great Lakes Dredge & Dock Company, LLC. All rights reserved.