David Johanson, SVP of Project Acquisition and Operations at Great Lakes Dredge & Dock Corp ($GLDD), made two open market sales of company shares over the past year, totaling about $159,000. His most recent sale occurred on December 10, 2025. These transactions rank 8,870th among 11,678 insiders in our database, where the average sale amount is $8.6 million across 6.4 transactions per insider. Johanson had no open market purchases during this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| April 1, 2026 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | U | Common Stock | 191598 | $0.00 | 0.0000 | 67,999,305 | 100.00% | 0.28% |
| April 1, 2026 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | A | Common Stock | 71860 | $0.00 | 191,597.5164 | 67,999,305 | 60.01% | 0.11% |
| March 25, 2026 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | A | Common Stock | 521 | $10.82 | 119,737.5164 | 67,999,305 | 0.44% | 0.00% |
| May 8, 2025 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | A | Common Stock | 13179 | $0.00 | 104,063.2594 | 67,282,528 | 14.50% | 0.02% |
| March 16, 2026 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | A | Common Stock | 8444 | $0.00 | 121,273.2594 | 67,999,305 | 7.48% | 0.01% |
| March 16, 2026 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | F | Common Stock | 2057 | $16.93 | 119,216.2594 | 67,999,305 | 1.70% | 0.00% |
| March 16, 2026 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | F | Common Stock | 1659 | $16.93 | 104,292.2594 | 67,999,305 | 1.57% | 0.00% |
| March 16, 2026 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | A | Common Stock | 12646 | $0.00 | 116,938.2594 | 67,999,305 | 12.13% | 0.02% |
| March 16, 2026 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | F | Common Stock | 3080 | $16.93 | 113,858.2594 | 67,999,305 | 2.63% | 0.00% |
| March 16, 2026 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | F | Common Stock | 1029 | $16.93 | 112,829.2594 | 67,999,305 | 0.90% | 0.00% |
| Feb. 23, 2026 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | A | Common Stock | 13988 | $0.00 | 105,951.2594 | 67,999,305 | 15.21% | 0.02% |
| Dec. 10, 2025 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | S | Common Stock | 2100 | $13.96 | 91,963.2594 | 67,999,305 | 2.23% | 0.00% |
| Dec. 3, 2025 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | S | Common Stock | 10000 | $13.02 | 94,063.2594 | 67,999,305 | 9.61% | 0.01% |
| May 8, 2025 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | A | Common Stock | 13179 | $0.00 | 104,063.2594 | 67,282,528 | 14.50% | 0.02% |
| May 5, 2025 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | F | Common Stock | 117 | $9.54 | 91,045.2594 | 67,282,528 | 0.13% | 0.00% |
| May 5, 2025 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | F | Common Stock | 98 | $9.54 | 90,884.2594 | 67,282,528 | 0.11% | 0.00% |
| May 5, 2025 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | F | Common Stock | 547 | $9.54 | 91,162.2594 | 67,282,528 | 0.60% | 0.00% |
| May 5, 2025 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | F | Common Stock | 63 | $9.54 | 90,982.2594 | 67,282,528 | 0.07% | 0.00% |
| March 17, 2025 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | F | Common Stock | 1658 | $8.70 | 76,930.2594 | 67,282,528 | 2.11% | 0.00% |
| March 17, 2025 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | A | Common Stock | 12495 | $0.00 | 89,425.2594 | 67,282,528 | 16.24% | 0.02% |
| March 17, 2025 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | F | Common Stock | 3043 | $8.70 | 86,382.2594 | 67,282,528 | 3.40% | 0.00% |
| March 17, 2025 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | F | Common Stock | 1029 | $8.70 | 85,353.2594 | 67,282,528 | 1.19% | 0.00% |
| March 17, 2025 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | A | Common Stock | 8402 | $0.00 | 93,755.2594 | 67,282,528 | 9.84% | 0.01% |
| March 17, 2025 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | F | Common Stock | 2046 | $8.70 | 92,454.2594 | 67,282,528 | 2.17% | 0.00% |
| May 6, 2024 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | F | Common Stock | 645 | $7.04 | 78,588.2594 | 0 | 0.81% | 0.00% |
| March 15, 2024 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | F | Common Stock | 1967 | $8.62 | 66,565.2594 | 0 | 2.87% | 0.00% |
| March 15, 2024 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | A | Common Stock | 12668 | $0.00 | 79,233.2594 | 0 | 19.03% | 0.00% |
| March 5, 2024 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | F | Common Stock | 453 | $8.70 | 63,680.2594 | 0 | 0.71% | 0.00% |
| March 15, 2024 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | F | Common Stock | 2046 | $8.62 | 68,532.2594 | 0 | 2.90% | 0.00% |
| March 15, 2024 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | A | Common Stock | 6898 | $0.00 | 70,578.2594 | 0 | 10.83% | 0.00% |
| March 5, 2024 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | F | Common Stock | 453 | $8.70 | 63,680.2594 | 0 | 0.71% | 0.00% |
| May 5, 2023 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | F | Common Stock | 785 | $5.75 | 63,528.1494 | 0 | 1.22% | 0.00% |
| March 15, 2023 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | A | Common Stock | 20428 | $0.00 | 64,313.1494 | 0 | 46.55% | 0.00% |
| March 13, 2023 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | F | Common Stock | 952 | $5.32 | 43,254.1494 | 0 | 2.15% | 0.00% |
| March 6, 2023 | Great Lakes Dredge & Dock CORP | $GLDD | JOHANSON DAVID | SVP-Project Acquisition & Ops | F | Common Stock | 372 | $5.78 | 44,206.1494 | 0 | 0.83% | 0.00% |