There have been 50 recent insider transactions recorded for Great Lakes Dredge & Dock Corporation (GLDD), including 22 buys and 28 sells. Total insider buying was valued at $5.64K and total insider selling at $3.79M.
Notable insiders with recent activity include Dickerson Lawrence R, Shanahan Kathleen M, Petterson Lasse. Insider transactions can provide insights into how company leadership views the stock's valuation and future prospects.
Insider Transactions — GLDD
| Date |
Name |
Role |
Transaction |
Shares |
Avg. Price |
Value |
Shares Owned |
| 2026-04-01 |
Dickerson Lawrence R |
Director |
Return of Shares |
76,962 |
$17.00 |
$1.31M |
- |
| 2026-04-01 |
Shanahan Kathleen M |
Director |
Tender Offer (Sell) |
76,375 |
- |
- |
- |
| 2026-04-01 |
Petterson Lasse |
CEO & President |
Tender Offer (Sell) |
1,568,290 |
- |
- |
- |
| 2026-04-01 |
Steger Ronald |
Director |
Return of Shares |
45,068 |
$17.00 |
$766.16K |
- |
| 2026-04-01 |
Shipp Earl L |
Director |
Tender Offer (Sell) |
42,619 |
- |
- |
- |
| 2026-04-01 |
Kornblau Scott Lee |
SVP & CFO |
Tender Offer (Sell) |
244,126 |
- |
- |
- |
| 2026-04-01 |
Hanson William H |
SVP, Market Development |
Tender Offer (Sell) |
90,853 |
- |
- |
- |
| 2026-04-01 |
Schiffer Vivienne |
SVP, CLO, Cco & Corp Secretary |
Tender Offer (Sell) |
144,817 |
- |
- |
- |
| 2026-04-01 |
Armstrong Dana A |
Director |
Tender Offer (Sell) |
8,436 |
- |
- |
- |
| 2026-04-01 |
Beyko Eleni |
SVP - Offshore Energy |
Tender Offer (Sell) |
151,312 |
- |
- |
- |
| 2026-04-01 |
Gunsten Christopher |
SVP-proj Svcs & Fleet Engineer |
Tender Offer (Sell) |
182,496 |
- |
- |
- |
| 2026-04-01 |
Johanson David |
SVP-project Acquisition & Ops |
Tender Offer (Sell) |
191,598 |
- |
- |
- |
| 2026-04-01 |
Bayer Ryan |
VP & CAO |
Tender Offer (Sell) |
37,380 |
- |
- |
- |
| 2026-03-31 |
Dickerson Lawrence R |
Director |
RSU Award |
2,938 |
- |
- |
76,962 |
| 2026-03-31 |
Shanahan Kathleen M |
Director |
Return of Shares |
10,336 |
$17.00 |
$175.71K |
- |
| 2026-03-31 |
Steger Ronald |
Director |
RSU Award |
1,625 |
- |
- |
45,068 |
| 2026-03-25 |
Johanson David |
SVP-project Acquisition & Ops |
RSU Award |
521 |
$10.82 |
$5.64K |
119,738 |
| 2026-03-16 |
Petterson Lasse |
CEO & President |
Tax Withholding of RSU |
15,529 |
$16.93 |
$262.91K |
1,313,978 |
| 2026-03-16 |
Kornblau Scott Lee |
SVP & CFO |
Tax Withholding of RSU |
4,719 |
$16.93 |
$79.89K |
134,014 |
| 2026-03-16 |
Hanson William H |
SVP, Market Development |
Tax Withholding of RSU |
1,030 |
$16.93 |
$17.44K |
67,956 |
| 2026-03-16 |
Schiffer Vivienne |
SVP, CLO, Cco & Corp Secretary |
Tax Withholding of RSU |
2,060 |
$16.93 |
$34.88K |
99,270 |
| 2026-03-16 |
Beyko Eleni |
SVP - Offshore Energy |
Tax Withholding of RSU |
2,645 |
$16.93 |
$44.78K |
119,189 |
| 2026-03-16 |
Gunsten Christopher |
SVP-proj Svcs & Fleet Engineer |
Tax Withholding of RSU |
2,204 |
$16.93 |
$37.31K |
97,736 |
| 2026-03-16 |
Johanson David |
SVP-project Acquisition & Ops |
Tax Withholding of RSU |
1,659 |
$16.93 |
$28.09K |
104,292 |
| 2026-03-16 |
Bayer Ryan |
VP & CAO |
Tax Withholding of RSU |
1,282 |
$16.93 |
$21.7K |
30,457 |
| 2026-02-23 |
Petterson Lasse |
CEO & President |
RSU Award |
132,825 |
- |
- |
1,292,202 |
| 2026-02-23 |
Kornblau Scott Lee |
SVP & CFO |
RSU Award |
26,603 |
- |
- |
138,733 |
| 2026-02-23 |
Hanson William H |
SVP, Market Development |
RSU Award |
9 |
- |
- |
68,986 |
| 2026-02-23 |
Schiffer Vivienne |
SVP, CLO, Cco & Corp Secretary |
RSU Award |
19,149 |
- |
- |
101,330 |
| 2026-02-23 |
Beyko Eleni |
SVP - Offshore Energy |
RSU Award |
16,320 |
- |
- |
121,834 |
| 2026-02-23 |
Gunsten Christopher |
SVP-proj Svcs & Fleet Engineer |
RSU Award |
13,988 |
- |
- |
99,940 |
| 2026-02-23 |
Johanson David |
SVP-project Acquisition & Ops |
RSU Award |
13,988 |
- |
- |
105,951 |
| 2026-02-23 |
Bayer Ryan |
VP & CAO |
RSU Award |
7,165 |
- |
- |
31,739 |
| 2026-01-15 |
Shanahan Kathleen M |
Director |
Option Exercise (Sell) |
3,002 |
- |
- |
8,851 |
| 2025-12-31 |
Dickerson Lawrence R |
Director |
RSU Award |
3,806 |
- |
- |
74,024 |
| 2025-12-31 |
Shanahan Kathleen M |
Director |
RSU Award |
1,925 |
- |
- |
14,702 |
| 2025-12-31 |
Steger Ronald |
Director |
RSU Award |
2,106 |
- |
- |
43,443 |
| 2025-12-31 |
Shipp Earl L |
Director |
RSU Award |
1,829 |
- |
- |
42,619 |
| 2025-12-31 |
Armstrong Dana A |
Director |
RSU Award |
1,829 |
- |
- |
8,436 |
| 2025-12-31 |
Beyko Eleni |
SVP - Offshore Energy |
Tax Withholding of RSU |
8,088 |
$13.12 |
$106.11K |
125,807 |
| 2025-12-10 |
Johanson David |
SVP-project Acquisition & Ops |
Informative Sell |
2,100 |
$13.96 |
$29.31K |
91,963 |
| 2025-12-03 |
Johanson David |
SVP-project Acquisition & Ops |
Informative Sell |
10,000 |
$13.02 |
$130.16K |
94,063 |
| 2025-09-30 |
Dickerson Lawrence R |
Director |
RSU Award |
4,165 |
- |
- |
70,218 |
| 2025-09-30 |
Shanahan Kathleen M |
Director |
RSU Award |
2,106 |
- |
- |
12,777 |
| 2025-09-30 |
Steger Ronald |
Director |
RSU Award |
2,304 |
- |
- |
41,337 |
| 2025-09-30 |
Shipp Earl L |
Director |
RSU Award |
2,002 |
- |
- |
40,790 |
| 2025-09-30 |
Armstrong Dana A |
Director |
RSU Award |
2,002 |
- |
- |
6,607 |
| 2025-08-11 |
Kornblau Scott Lee |
SVP & CFO |
Informative Sell |
59,805 |
$11.48 |
$686.32K |
112,130 |
| 2025-06-30 |
Steger Ronald |
Director |
RSU Award |
2,266 |
- |
- |
39,033 |
| 2025-06-03 |
Steger Ronald |
Director |
Informative Sell |
5,000 |
$11.59 |
$57.93K |
20,404 |
■ Informative Buy/Sell — open market transaction (most significant)
■ Uninformative Buy — award, option exercise, conversion
■ Uninformative Sell — tax withholding, award vest sale
■ Neutral — gift, trust, expiry
