GLDD SEC Form 4 filings
Great Lakes Dredge & Dock Corp Latest Insider Trading Activity
Over the past 1,857 days, 13 insider trades from Great Lakes Dredge & Dock Corp (GLDD). The most recent SEC Form 4 filing shows a sale by Johanson David (Great Lakes Dredge & Dock Corp SVP-Project Acquisition & Ops) on December 10, 2025 involving 2,100 shares at $13.96 per share. This page shows up to the 10 most recent SEC Form 4 filing records on a 6-hour delay. Sign up for real-time updates and access to 20 years of historic insider trading data.
Insider Trading For GLDD Charted on Daily Candles. Scroll left or zoom out to load earlier candles (up to 2 years).
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| Ticker | Filing Date | Transaction Date | Company | Insider | Title | Transaction | Trade Count | Shares | Avg. Price | Total Value | Position Size Change | SEC Filing |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 10b5-1: Scheduled Form 4 Transaction GLDD | 2025-12-12 | 2025-12-10 | Great Lakes Dredge & Dock Corp | Johanson David | SVP-Project Acquisition & Ops | Sell | 1 | 2,100 | $13.96 | $29,316.00 | 2.23% | View Filing |
| 10b5-1: Scheduled Form 4 Transaction GLDD | 2025-12-04 | 2025-12-03 | Great Lakes Dredge & Dock Corp | Johanson David | SVP-Project Acquisition & Ops | Sell | 1 | 10,000 | $13.02 | $130,200.00 | 9.61% | View Filing |
| 10b5-1: Scheduled Form 4 Transaction GLDD | 2025-08-13 | 2025-08-11 | Great Lakes Dredge & Dock Corp | Kornblau Scott Lee | SVP & CFO | Sell | 1 | 59,805 | $11.48 | $686,561.40 | 34.78% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. GLDD | 2023-05-19 | 2023-05-19 | Great Lakes Dredge & Dock Corp | Levenson Ryan | Director | Buy | 3 | 133,788 | $6.81 | $911,016.70 | 17.81% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. GLDD | 2023-05-15 | 2023-05-12 | Great Lakes Dredge & Dock Corp | Levenson Ryan | Director | Buy | 1 | 68,000 | $6.10 | $414,800.00 | 33.98% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. GLDD | 2023-05-12 | 2023-05-11 | Great Lakes Dredge & Dock Corp | Levenson Ryan | Director | Buy | 2 | 132,000 | $6.09 | $803,880.00 | 66.60% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. GLDD | 2023-03-03 | 2023-03-02 | Great Lakes Dredge & Dock Corp | Shipp Earl L | Director | Buy | 1 | 2,000 | $5.51 | $11,020.00 | 13.72% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. GLDD | 2022-08-05 | 2022-08-05 | Great Lakes Dredge & Dock Corp | Petterson Lasse | CEO & President | Buy | 1 | 10,000 | $9.65 | $96,500.00 | 1.00% | View Filing |
| Tax liability coverage transfers: shares are often sold to offset the tax liability from shares vesting GLDD | 2022-03-02 | 2022-02-28 | Great Lakes Dredge & Dock Corp | Hanson William H | SVP, Gov't Relations & Bus Dev | Sell | 1 | 1,119 | $14.06 | $15,733.14 | 3.75% | View Filing |
| Explained M/S: sale activity tied to share conversions or derivative-related share movements. GLDD | 2021-08-18 | 2021-08-16 | Great Lakes Dredge & Dock Corp | Simonelli David E | Chief Operating Officer | Sell | 1 | 21,227 | $14.90 | $316,282.30 | 8.35% | View Filing |
⚠️ THE SAMPLE ABOVE IS DEFERRED BY 6 HOURS ⚠️
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Alerts are based on public SEC filings and are provided for informational purposes only; they do not constitute financial advice.