Equity

GLDD

Great Lakes Dredge and Dock Company

Price · Chart

This price chart is drawn by TradingView, from their own data, in an embed loaded from their servers. We hold too few licensed daily closes of our own for GLDD to draw a line in its place.

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GLDD insider trades

SEC Form 4

GLDD has no Form 4 filing in the last 90 days, so there is no summary for that window. The most recent filings we hold are below, the newest dated 10 December 2025.

Date Insider Type Shares Value

10 Dec 2025 JOHANSON DAVID SVP-Project Acquisition & Ops Sell 2,100 $29K

03 Dec 2025 JOHANSON DAVID SVP-Project Acquisition & Ops Sell 10,000 $130K

11 Aug 2025 Kornblau Scott Lee SVP & CFO Sell 59,805 $686K

Compensation mechanics Share grants, option exercises, tax withholding and transfers. They reach the same Form 4 as a trade, but they are not the insider buying or selling on the open market, so no purchase or sale value applies to them.

Date Insider Type Shares Value

30 Sep 2025 DICKERSON LAWRENCE R Award 4,165

30 Sep 2025 Shanahan Kathleen M Award 2,106

30 Sep 2025 Shipp Earl L Award 2,002

30 Sep 2025 Steger Ronald Award 2,304

30 Sep 2025 Armstrong Dana A Award 2,002

GLDD insider trades

GLDD institutional holders