Great Lakes Dredge & Dock CORP
GLDDDelisted- Industry
- Heavy Construction Other Than Bldg Const - Contractors
- SEC CIK
- 0001372020
Great Lakes Dredge & Dock CORP was delisted in 2026; its insiders filed their last Form 4 on Apr 1, 2026; 182 institutions reported holding it in 13F filings for Q1 2026, worth $931.0M in total; no superinvestor held it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Great Lakes Dredge & Dock CORP insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 0 filings
- Insiders trading
- 0
- Net value
- $0
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Great Lakes Dredge & Dock CORP, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Dickerson Lawrence R | Director | 0 | Apr 1, 2026 | 3 |
| Shanahan Kathleen M | Director | 0 | Apr 1, 2026 | 4 |
| Petterson Lasse | CEO & President | 0 | Apr 1, 2026 | 4 |
| Steger Ronald | Director | 0 | Apr 1, 2026 | 3 |
| Shipp Earl L | Director | 0 | Apr 1, 2026 | 3 |
| Kornblau Scott Lee | SVP & CFO | 0 | Apr 1, 2026 | 4 |
| Hanson William H | SVP, Market Development | 0 | Apr 1, 2026 | 4 |
| Schiffer Vivienne | SVP, CLO, CCO & Corp Secretary | 0 | Apr 1, 2026 | 4 |
| Armstrong Dana A | Director | 0 | Apr 1, 2026 | 3 |
| Beyko Eleni | SVP - Offshore Energy | 0 | Apr 1, 2026 | 5 |
| Gunsten Christopher | SVP-Proj Svcs & Fleet Engineer | 0 | Apr 1, 2026 | 4 |
| Johanson David | SVP-Project Acquisition & Ops | 0 | Apr 1, 2026 | 6 |
| Bayer Ryan | VP & CAO | 0 | Apr 1, 2026 | 4 |
| Steuert D Michael | Director | 89,209 | Apr 28, 2025 | 0 |
| Levenson Ryan | Director | 333,888Indirect | Apr 1, 2024 | 0 |
| Dorward-King Elaine J | Director | 35,710 | Jul 3, 2023 | 0 |
| Tastard James | SVP & CHRAO | 39,734 | May 9, 2023 | 0 |
| Lightfoot Todd M | Chief Accounting Officer | 41,510Indirect | May 9, 2023 | 0 |
| Simonelli David E | Chief Operating Officer | 248,107 | Jun 10, 2022 | 0 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Dec 12, 2025 (view filing) | Dec 10 | 2 days | Johanson DavidSVP-Project Acquisition & Ops | SSale | −2.10K | $13.96 | −$29.3K | −2.2%92.0K after | 10b5-1 |
| Dec 4, 2025 (view filing) | Dec 3 | 1 day | Johanson DavidSVP-Project Acquisition & Ops | SSale | −10.0K | $13.02 | −$130.2K | −9.6%94.1K after | 10b5-1 |
| Aug 13, 2025 (view filing) | Aug 11 | 2 days | Kornblau Scott LeeSVP & CFO | SSale | −59.8K | $11.48 | −$686.6K | −34.8%112.1K after | 10b5-1 |
| Jun 4, 2025 (view filing) | Jun 3 | 1 day | Steger RonaldDirector | SSale | −5.00K | $11.59 | −$58.0K | −19.7%20.4K after | |
| May 8, 2025 (view filing) | May 6 | 2 days | Beyko EleniSVP - Offshore Energy | SSale | −22.6K | $10.26 | −$231.7K | −31.1%50.1K after | 10b5-1 |
| Mar 5, 2025 (view filing) | Mar 4 | 1 day | Gunsten ChristopherSVP-Proj Svcs & Fleet Engineer | PPurchase | +3.88K | $7.75 | +$30.0K | +6.7%61.5K after | |
| Nov 15, 2024 (view filing) | Nov 14 | 1 day | Dickerson Lawrence RDirector | SSale | −15.9K | $12.04 | −$191.9K | −16.2%82.1K after | |
| Nov 13, 2024 (view filing) | Nov 12 | 1 day | Dickerson Lawrence RDirector | SSale | −5.32K | $12.61 | −$67.1K | −5.1%98.1K after | |
| Nov 12, 2024 (view filing) | Nov 11 | 1 day | Shanahan Kathleen MDirector | SSale | −23.2K | $12.63 | −$293.5K | −25.6%67.7K after | |
| Nov 12, 2024 (view filing) | Nov 11 | 1 day | Steger RonaldDirector | SSale | −12.0K | $12.76 | −$153.1K | −32.1%25.4K after | |
| Aug 26, 2024 (view filing) | Aug 23-26 | 3 days | Petterson LasseCEO & President | SSale | −75.2K | $9.14 | −$687.6K | −7.7%902.4K after | 2 lots10b5-1 |
| Aug 21, 2024 (view filing) | Aug 19-20 | 2 days | Petterson LasseCEO & President | SSale | −63.9K | $9.07 | −$579.5K | −6.1%977.6K after | 2 lots10b5-1 |
| Aug 19, 2024 (view filing) | Aug 15-16 | 4 days | Petterson LasseCEO & President | SSale | −110.9K | $9.09 | −$1.01M | −9.6%1.04M after | 2 lots10b5-1 |
| May 19, 2023 (view filing) | May 17-19 | 2 days | Levenson RyanDirector | PPurchase | +133.8K | $6.81 | +$911.0K | +66.9%333.9K after | 3 lots |
| May 15, 2023 (view filing) | May 12 | 3 days | Levenson RyanDirector | PPurchase | +68.0K | $6.10 | +$414.8K | +51.5%200.1K after | |
| May 12, 2023 (view filing) | May 10-11 | 2 days | Levenson RyanDirector | PPurchase | +132.0K | $6.09 | +$803.9K | +132,000.0%132.1K after | 2 lots |
| Mar 3, 2023 (view filing) | Mar 2 | 1 day | Shipp Earl LDirector | PPurchase | +2.00K | $5.51 | +$11.0K | +15.9%14.6K after | |
| Aug 5, 2022 (view filing) | Aug 5 | Same day | Petterson LasseCEO & President | PPurchase | +10.0K | $9.65 | +$96.5K | +1.0%1.00M after | |
| May 11, 2022 (view filing) | May 9 | 2 days | Simonelli David EChief Operating Officer | SSale | −17.7K | $14.12 | −$249.9K | −6.7%245.9K after | |
| Mar 2, 2022 (view filing) | Feb 28 | 2 days | Hanson William HSVP, Gov't Relations & Bus Dev | SSale | −1.12K | $14.06 | −$15.7K | −3.8%28.7K after | |
| Nov 16, 2021 (view filing) | Nov 12-15 | 4 days | Simonelli David EChief Operating Officer | SSale | −5.00K | $15.84 | −$79.2K | −2.4%202.1K after | 2 lots |
| Nov 2, 2021 (view filing) | Oct 29-Nov 1 | 4 days | Simonelli David EChief Operating Officer | SSale | −5.00K | $15.37 | −$76.8K | −2.4%207.1K after | 2 lots |
| Oct 25, 2021 (view filing) | Oct 21 | 4 days | Dickerson Lawrence RDirector | SSale | −1.52K | $14.59 | −$22.1K | −1.7%85.6K after | |
| Aug 31, 2021 (view filing) | Aug 27 | 4 days | Simonelli David EChief Operating Officer | SSale | −21.1K | $14.97 | −$315.3K | −9.0%212.1K after | |
| Aug 18, 2021 (view filing) | Aug 16 | 2 days | Simonelli David EChief Operating Officer | SSale | −21.2K | $14.90 | −$316.3K | −8.3%233.1K after | |
| Aug 16, 2021 (view filing) | Aug 13 | 3 days | Simonelli David EChief Operating Officer | SSale | −7.57K | $14.85 | −$112.4K | −3.1%233.1K after | |
| Aug 12, 2021 (view filing) | Aug 6 | 6 daysLate | Shipp Earl LDirector | PPurchase | +1.50K | $14.58 | +$21.9K | New position1.50K after | |
| Jul 14, 2021 (view filing) | Jul 12 | 2 days | Dickerson Lawrence RDirector | SSale | −1.57K | $14.50 | −$22.7K | −1.8%84.1K after | |
| Jul 2, 2021 (view filing) | Jun 11, 2020 | 386 days | Levenson RyanDirector | SSale | −41.9K | $9.33 | −$390.7K | −21.8%150.2K after | Amended |