GLDD
Great Lakes Dredge & Dock Corporation
NASDAQ · Industrials · Engineering & Construction · US
$17.00
+0.00%0
Insider buys (3m)
0
Insider sells (3m)
$0.00
Net value (3m)
+28.2%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Apr 1, 2026 | Petterson Lasse · director, officer: CEO & President | A-Award | 206,445 | $0.00 |
| Apr 1, 2026 | Schiffer Vivienne · officer: SVP, CLO, CCO & Corp Secretary | A-Award | 28,945 | $0.00 |
| Mar 25, 2026 | BEYKO ELENI · officer: SVP - Offshore Energy | F-InKind | 8,088 | $13 |
| Feb 25, 2026 | HANSON WILLIAM H · officer: SVP, Market Development | A-Award | 9 | $0.00 |
| Feb 25, 2026 | BAYER RYAN · officer: VP & CAO | A-Award | 7,165 | $0.00 |
| Feb 25, 2026 | BEYKO ELENI · officer: SVP - Offshore Energy | A-Award | 16,320 | $0.00 |
| Feb 25, 2026 | Schiffer Vivienne · officer: SVP, CLO, CCO & Corp Secretary | A-Award | 19,149 | $0.00 |
| Feb 25, 2026 | JOHANSON DAVID · officer: SVP-Project Acquisition & Ops | A-Award | 13,988 | $0.00 |
| Feb 25, 2026 | GUNSTEN CHRISTOPHER · officer: SVP-Proj Svcs & Fleet Engineer | A-Award | 13,988 | $0.00 |
| Feb 25, 2026 | Petterson Lasse · director, officer: CEO & President | A-Award | 132,825 | $0.00 |
| Feb 25, 2026 | Kornblau Scott Lee · officer: SVP & CFO | A-Award | 26,603 | $0.00 |
| Jan 20, 2026 | Shanahan Kathleen M · director | M-Exempt | 3,002 | $0.00 |
| Jan 20, 2026 | Shanahan Kathleen M · director | M-Exempt | 2,849 | $0.00 |
| Jan 5, 2026 | Armstrong Dana A · director | A-Award | 1,829 | $0.00 |
| Jan 5, 2026 | Steger Ronald · director | A-Award | 2,106 | $0.00 |
| Jan 5, 2026 | Shipp Earl L · director | A-Award | 1,829 | $0.00 |
| Jan 5, 2026 | DICKERSON LAWRENCE R · director | A-Award | 3,806 | $0.00 |
| Jan 5, 2026 | Shanahan Kathleen M · director | A-Award | 1,925 | $0.00 |
| Dec 12, 2025 | JOHANSON DAVID · officer: SVP-Project Acquisition & Ops | Sale | 2,100 | $14 |
| Dec 4, 2025 | JOHANSON DAVID · officer: SVP-Project Acquisition & Ops | Sale | 10,000 | $13 |
| Oct 1, 2025 | Armstrong Dana A · director | A-Award | 2,002 | $0.00 |
| Oct 1, 2025 | Shanahan Kathleen M · director | A-Award | 2,106 | $0.00 |
| Oct 1, 2025 | Steger Ronald · director | A-Award | 2,304 | $0.00 |
| Oct 1, 2025 | DICKERSON LAWRENCE R · director | A-Award | 4,165 | $0.00 |
| Oct 1, 2025 | Shipp Earl L · director | A-Award | 2,002 | $0.00 |
| Aug 13, 2025 | Kornblau Scott Lee · officer: SVP & CFO | Sale | 59,805 | $11 |
| Jul 1, 2025 | Armstrong Dana A · director | A-Award | 1,969 | $0.00 |
| Jul 1, 2025 | Steger Ronald · director | A-Award | 2,266 | $0.00 |
| Jul 1, 2025 | Shipp Earl L · director | A-Award | 1,969 | $0.00 |
| Jul 1, 2025 | DICKERSON LAWRENCE R · director | A-Award | 4,097 | $0.00 |
Institutional positioning
13F filings over the trailing two quarters
New 56Increased 43Reduced 68Sold out 183
| Filer | Action | Shares | Filed |
|---|---|---|---|
| BLACKROCK, INC. | Reduced | 5,917,589 | May 13, 2026 |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 3,386,372 | May 7, 2026 |
| AMERICAN CENTURY COMPANIES INC | Increased | 3,006,419 | May 15, 2026 |
| GLAZER CAPITAL, LLC | New Position | 2,949,613 | May 14, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 2,856,158 | May 15, 2026 |
| FIL LTD | New Position | 2,671,231 | May 15, 2026 |
| TWO SIGMA INVESTMENTS, LP | Increased | 1,989,521 | May 15, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 1,678,166 | May 15, 2026 |
| BALYASNY ASSET MANAGEMENT L.P. | New Position | 1,626,990 | May 15, 2026 |
| STATE STREET CORP | Reduced | 1,577,722 | May 15, 2026 |
| QUBE RESEARCH & TECHNOLOGIES LTD | Increased | 1,383,585 | May 15, 2026 |
| WATER ISLAND CAPITAL LLC | New Position | 1,263,580 | May 15, 2026 |
| ODDO BHF ASSET MANAGEMENT SAS | New Position | 1,166,388 | May 18, 2026 |
| MILLENNIUM MANAGEMENT LLC | Reduced | 1,131,127 | May 15, 2026 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Increased | 1,054,360 | May 14, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Apr 1, 2026