Great Lakes Dredge & Dock CORP — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Shipp Earl L | — | Award / Grant | 1,899 | — | — | 32,289 | Sep 30, 2024 |
| DICKERSON LAWRENCE R | — | Award / Grant | 4,363 | — | — | 103,407 | Sep 30, 2024 |
| Petterson Lasse | CEO & President | Sale | 28,709 | $9.24 | $265,271 | 902,392 | Aug 23, 2024 |
| Petterson Lasse | CEO & President | Sale | 10,147 | $9.10 | $92,338 | 977,611 | Aug 19, 2024 |
| Petterson Lasse | CEO & President | Sale | 51,640 | $9.11 | $470,440 | 1,041,529 | Aug 15, 2024 |
| Petterson Lasse | CEO & President | Tax Withholding | 75,000 | $8.90 | $667,500 | 1,177,392 | Jul 15, 2024 |
| STEUERT D MICHAEL | — | Award / Grant | 2,337 | — | — | 82,779 | Jun 28, 2024 |
| Shipp Earl L | — | Award / Grant | 2,278 | — | — | 30,390 | Jun 28, 2024 |
| DICKERSON LAWRENCE R | — | Award / Grant | 5,232 | — | — | 99,044 | Jun 28, 2024 |
| Schiffer Vivienne | SVP, CLO, CCO & Corp Secretary | Tax Withholding | 1,070 | $7.04 | $7,533 | 50,545 | May 6, 2024 |
| Petterson Lasse | CEO & President | Tax Withholding | 9,467 | $7.04 | $66,648 | 1,252,392 | May 6, 2024 |
| Kornblau Scott Lee | SVP, CFO & Treasurer | Tax Withholding | 1,676 | $7.04 | $11,799 | 116,757 | May 6, 2024 |
| JOHANSON DAVID | SVP-Project Acquisition & Ops | Tax Withholding | 645 | $7.04 | $4,541 | 78,588 | May 6, 2024 |
| HANSON WILLIAM H | SVP, Market Development | Tax Withholding | 486 | $7.04 | $3,421 | 53,198 | May 6, 2024 |
| GUNSTEN CHRISTOPHER | SVP-Proj Svcs & Fleet Engineer | Tax Withholding | 640 | $7.04 | $4,506 | 57,657 | May 6, 2024 |
| BEYKO ELENI | SVP - Offshore Wind | Tax Withholding | 889 | $7.04 | $6,259 | 69,935 | May 6, 2024 |
| Kornblau Scott Lee | SVP, CFO & Treasurer | Award / Grant | 50,000 | — | — | 138,108 | Apr 25, 2024 |
| BEYKO ELENI | SVP - Offshore Wind | Tax Withholding | 8,088 | $7.44 | $60,175 | 70,824 | Apr 24, 2024 |
| STEUERT D MICHAEL | — | Award / Grant | 2,429 | — | — | 80,442 | Mar 28, 2024 |
| Shipp Earl L | — | Award / Grant | 2,286 | — | — | 28,112 | Mar 28, 2024 |
| DICKERSON LAWRENCE R | — | Award / Grant | 5,250 | — | — | 93,812 | Mar 28, 2024 |
| JOHANSON DAVID | SVP-Project Acquisition & Ops | Award / Grant | 12,668 | — | — | 79,233 | Mar 15, 2024 |
| Schiffer Vivienne | SVP, CLO, CCO & Corp Secretary | Tax Withholding | 3,012 | $8.62 | $25,963 | 35,931 | Mar 15, 2024 |
| Petterson Lasse | CEO & President | Award / Grant | 118,388 | — | — | 1,261,859 | Mar 15, 2024 |
| Kornblau Scott Lee | SVP, CFO & Treasurer | Award / Grant | 22,305 | — | — | 88,108 | Mar 15, 2024 |
| HANSON WILLIAM H | SVP, Market Development | Tax Withholding | 1,347 | $8.62 | $11,611 | 47,150 | Mar 15, 2024 |
| GUNSTEN CHRISTOPHER | SVP-Proj Svcs & Fleet Engineer | Award / Grant | 12,668 | — | — | 58,297 | Mar 15, 2024 |
| BEYKO ELENI | SVP - Offshore Wind | Award / Grant | 8,047 | — | — | 69,306 | Mar 15, 2024 |
| BAYER RYAN | VP & CAO | Award / Grant | 9,771 | — | — | 14,227 | Mar 15, 2024 |
| JOHANSON DAVID | SVP-Project Acquisition & Ops | Tax Withholding | 453 | $8.70 | $3,941 | 63,680 | Mar 5, 2024 |
| Schiffer Vivienne | SVP, CLO, CCO & Corp Secretary | Tax Withholding | 895 | $8.70 | $7,786 | 34,242 | Mar 5, 2024 |
| Petterson Lasse | CEO & President | Tax Withholding | 8,860 | $8.70 | $77,082 | 1,145,550 | Mar 5, 2024 |
| Kornblau Scott Lee | SVP, CFO & Treasurer | Tax Withholding | 1,850 | $8.70 | $16,095 | 63,156 | Mar 5, 2024 |
| JOHANSON DAVID | SVP-Project Acquisition & Ops | Tax Withholding | 453 | $8.70 | $3,941 | 63,680 | Mar 5, 2024 |
| HANSON WILLIAM H | SVP, Market Development | Tax Withholding | 341 | $8.70 | $2,967 | 44,216 | Mar 5, 2024 |
| GUNSTEN CHRISTOPHER | SVP-Proj Svcs & Fleet Engineer | Tax Withholding | 277 | $8.70 | $2,410 | 42,736 | Mar 5, 2024 |
| BEYKO ELENI | SVP - Offshore Wind | Tax Withholding | 612 | $8.70 | $5,324 | 61,259 | Mar 5, 2024 |
| STEUERT D MICHAEL | — | Award / Grant | 2,767 | — | — | 78,013 | Dec 29, 2023 |
| Shipp Earl L | — | Award / Grant | 2,605 | — | — | 25,826 | Dec 29, 2023 |
| Shanahan Kathleen M | — | Award / Grant | 5,372 | — | — | 90,913 | Dec 29, 2023 |
| STEUERT D MICHAEL | — | Award / Grant | 2,666 | — | — | 75,246 | Sep 29, 2023 |
| Shipp Earl L | — | Award / Grant | 2,509 | — | — | 23,221 | Sep 29, 2023 |
| Shanahan Kathleen M | — | Award / Grant | 5,269 | — | — | 85,541 | Sep 29, 2023 |
| STEUERT D MICHAEL | — | Award / Grant | 2,604 | — | — | 72,580 | Jun 30, 2023 |
| Shanahan Kathleen M | — | Award / Grant | 5,178 | — | — | 80,272 | Jun 30, 2023 |
| Shipp Earl L | — | Award / Grant | 2,451 | — | — | 20,712 | Jun 30, 2023 |
| Dorward-King Elaine J | — | Award / Grant | 3,094 | — | — | 35,710 | Jun 30, 2023 |
| Levenson Ryan | — | Purchase | 5,207 | $6.64 | $34,574 | 205,307 | May 18, 2023 |
| Levenson Ryan | — | Purchase | 68,000 | $6.10 | $414,800 | 200,100 | May 12, 2023 |
| Levenson Ryan | — | Purchase | 66,000 | $6.05 | $399,300 | 66,100 | May 11, 2023 |