EXHIBIT 99.1 Great Lakes Reports Third Quarter 2024 Results Third quarter net income of $8.9 million Third quarter adjusted EBITDA of $27.0 million Record dredging backlog of $1.21 billion at September 30, 2024 HOUSTON, Nov. 05, 2024 (GLOBE NEWSWIRE) -- Great Lakes Dredge & Dock Corporation ("Great Lakes" or the "Company") (Nasdaq: GLDD), the largest provider of dredging services in the United States, today reported financial results for the third quarter ended September 30, 2024. Third Quarter 2024 Highlig ...