13 insiders reported 159 Form 4 transactions for Great Lakes Dredge & Dock CORP (GLDD) over the past 18 months (most recent 2026-03-25). Recent activity: BEYKO ELENI (SVP - Offshore Energy) Buy 15,376 shares, JOHANSON DAVID (SVP-Project Acquisition & Ops) Buy 13,179 shares, Schiffer Vivienne (SVP, CLO, CCO & Corp Secretary) Buy 18,035 shares, BAYER RYAN (VP & CAO) Buy 10,126 shares, HANSON WILLIAM H (SVP, Market Development) Buy 8,237 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-25 | BEYKO ELENI | SVP - Offshore Energy | Buy | 15,376 | $0 |
| 2026-03-25 | JOHANSON DAVID | SVP-Project Acquisition & Ops | Buy | 13,179 | $0 |
| 2026-03-25 | Schiffer Vivienne | SVP, CLO, CCO & Corp Secretary | Buy | 18,035 | $0 |
| 2026-03-25 | BAYER RYAN | VP & CAO | Buy | 10,126 | $0 |
| 2026-03-25 | HANSON WILLIAM H | SVP, Market Development | Buy | 8,237 | $0 |
| 2026-03-25 | Kornblau Scott Lee | SVP & CFO | Buy | 25,058 | $0 |
| 2026-03-25 | GUNSTEN CHRISTOPHER | SVP-Proj Svcs & Fleet Engineer | Buy | 13,179 | $0 |
| 2026-03-25 | BEYKO ELENI | SVP - Offshore Energy | Sell | 8,088 | $106,115 |
| 2026-03-25 | Petterson Lasse | CEO & President | Buy | 125,145 | $0 |
| 2026-03-18 | BEYKO ELENI | SVP - Offshore Energy | Buy | 14,754 | $0 |
| 2026-03-18 | BAYER RYAN | VP & CAO | Buy | 2,170 | $0 |
| 2026-03-18 | BAYER RYAN | VP & CAO | Sell | 854 | $14,458 |
| 2026-03-18 | BAYER RYAN | VP & CAO | Sell | 1,282 | $21,704 |
| 2026-03-18 | JOHANSON DAVID | SVP-Project Acquisition & Ops | Sell | 1,659 | $28,087 |
| 2026-03-18 | BEYKO ELENI | SVP - Offshore Energy | Sell | 4,773 | $80,807 |
| 2026-03-18 | BEYKO ELENI | SVP - Offshore Energy | Sell | 1,939 | $32,827 |
| 2026-03-18 | BEYKO ELENI | SVP - Offshore Energy | Buy | 9,852 | $0 |
| 2026-03-18 | BEYKO ELENI | SVP - Offshore Energy | Sell | 3,188 | $53,973 |
| 2026-03-18 | GUNSTEN CHRISTOPHER | SVP-Proj Svcs & Fleet Engineer | Sell | 2,204 | $37,314 |
| 2026-03-18 | BEYKO ELENI | SVP - Offshore Energy | Sell | 2,645 | $44,780 |
| 2026-03-18 | GUNSTEN CHRISTOPHER | SVP-Proj Svcs & Fleet Engineer | Sell | 4,091 | $69,261 |
| 2026-03-18 | GUNSTEN CHRISTOPHER | SVP-Proj Svcs & Fleet Engineer | Sell | 1,367 | $23,143 |
| 2026-03-18 | GUNSTEN CHRISTOPHER | SVP-Proj Svcs & Fleet Engineer | Buy | 8,444 | $0 |
| 2026-03-18 | GUNSTEN CHRISTOPHER | SVP-Proj Svcs & Fleet Engineer | Sell | 2,732 | $46,253 |
| 2026-03-18 | GUNSTEN CHRISTOPHER | SVP-Proj Svcs & Fleet Engineer | Buy | 12,646 | $0 |
Source: SEC Form 4 filings · as of 2026-03-25