Great Lakes Dredge & Dock CORP Form 4 insider transactions

Great Lakes Dredge & Dock Director Kathleen M. Shanahan acquired 5,851 shares of common stock through the conversion of deferred stock units.

Great Lakes Dredge & Dock Director Kathleen M. Shanahan acquired 1,925 Deferred Stock Units, signaling increased beneficial ownership.

Great Lakes Dredge & Dock Corp. director Ronald Steger was granted 2,106 deferred stock units, increasing his beneficial ownership.

Great Lakes Dredge & Dock Corp. Director Lawrence R. Dickerson reported the acquisition of 3,806 deferred stock units and beneficial ownership of 86,217 common shares.

Great Lakes Dredge & Dock Corp. Director Earl L. Shipp acquired 1,829 shares of common stock on December 31, 2025, under a pre-arranged Rule 10b5-1 plan.

Great Lakes Dredge & Dock Corp. Director Dana Armstrong reported the acquisition of 1,829 shares of common stock, increasing her beneficial ownership.

Great Lakes Dredge & Dock SVP David Johanson sold 2,100 shares of common stock for $13.9564 per share under a pre-arranged trading plan.

David Johanson, SVP-Project Acquisition & Operations at Great Lakes Dredge & Dock Corp., sold 10,000 shares of common stock at a weighted average price of $13.0155 per share.

Great Lakes Dredge & Dock Corp. Director Ronald Steger acquired additional deferred stock units, increasing his total beneficial ownership.

Great Lakes Dredge & Dock Corp. director Earl L. Shipp acquired 2,002 shares of common stock.

Great Lakes Dredge & Dock Director Kathleen M. Shanahan reported the acquisition of 2,106 Deferred Stock Units, increasing her total beneficial ownership of common stock and DSUs.

Great Lakes Dredge & Dock Corp. Director Lawrence R. Dickerson acquired 4,165 deferred stock units, increasing his total derivative holdings to 70,218 DSUs.

Great Lakes Dredge & Dock Corp. Director Dana A Armstrong acquired 2,002 shares of common stock on September 30, 2025, increasing holdings to 6,607 shares.

Great Lakes Dredge & Dock Corp.'s SVP & CFO, Scott Lee Kornblau, sold 59,805 shares of common stock for a weighted average price of $11.476 per share under a pre-arranged trading plan.

Great Lakes Dredge & Dock Corp. Director Ronald Steger was granted 2,266 Deferred Stock Units as part of his compensation, aligning his interests with shareholders.

Great Lakes Dredge & Dock Corp. Director Earl L. Shipp acquired 1,969 shares of common stock on June 30, 2025, increasing his total beneficial ownership to 38,788 shares.

Kathleen M. Shanahan, a Director at Great Lakes Dredge & Dock Corp., acquired 2,071 Deferred Stock Units on June 30, 2025, increasing her total beneficial ownership of DSUs to 10,671, which will convert to common stock starting January 2026.

Great Lakes Dredge & Dock Corp. Director Lawrence R. Dickerson was granted 4,097 Deferred Stock Units, increasing his total DSU holdings to 66,053, payable in common stock upon the end of his board service.

Dana A Armstrong, a Director at Great Lakes Dredge & Dock Corp., acquired 1,969 shares of common stock through a grant, increasing total beneficial ownership to 4,605 shares.

Great Lakes Dredge & Dock Corporation Director Ronald Steger reported the sale of 5,000 shares of common stock at $11.585 per share, executed under a Rule 10b5-1 trading plan.

Eleni Beyko, SVP at Great Lakes Dredge & Dock Corp., reports the acquisition of restricted stock units, increasing her beneficial ownership in the company.

Lasse Petterson, CEO of Great Lakes Dredge & Dock, reports acquisition of restricted stock units.

Scott Lee Kornblau, SVP & CFO of Great Lakes Dredge & Dock Corp., reports acquiring 25,058 shares of common stock on May 8, 2025.

Vivienne Schiffer, SVP, CLO, CCO & Corporate Secretary of Great Lakes Dredge & Dock Corp, reports the acquisition of 18,035 restricted stock units.

Christopher Gunsten, SVP at Great Lakes Dredge & Dock Corp, reports acquisition of shares via restricted stock units.

David Johanson, SVP at Great Lakes Dredge & Dock Corp., reports acquisition of common stock and restricted stock units.

William H. Hanson, SVP of Market Development at Great Lakes Dredge & Dock Corp, reports acquisition of 8,237 shares of common stock.

Eleni Beyko, SVP at Great Lakes Dredge & Dock Corp., reports acquisition of 15,376 shares of common stock on May 8, 2025.

Ryan Bayer, VP & CAO of Great Lakes Dredge & Dock Corp., reports the acquisition and disposal of common stock.

Eleni Beyko, SVP of Offshore Energy at Great Lakes Dredge & Dock Corp., sold 22,579 shares of common stock at an average price of $10.2573 per share on May 6, 2025, under a pre-arranged trading plan.