SEC Filing Details

Document Details

Form

4/A

Filing Date

Mar 25, 2026

Document Date

May 8, 2025

Form Description

Amendment to a previously filed 4

Filing Group

3,4,5

Company

Great Lakes Dredge & Dock Corporation

Issuer

GREAT LAKES DREDGE & DOCK CORP

Filer

SCHIFFER VIVIENNE

Filing Formats

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GLDD is the US dredging industry leader in the U.S., the largest provider of dredging services, and the only U.S. company with substantial overseas experience. GLDD owns and operates a diverse dredging fleet and operates marine yards in five locations nationwide.

In addition, Great Lakes is fully engaged in expanding its core business into the rapidly developing offshore wind energy industry.

Contact Info

346-359-1010

info@gldd.com

9811 Katy Freeway, Suite 1200 Houston, TX 77024

Contact Investor Relations

Eric Birge
Vice President of Investor Relations and Finance

313-220-3053

embirge@gldd.com