MarketPeel
Insider Trading Intelligence
Pricing
…
DJ

David Johanson

GLDD
SVP-PROJECT ACQUISITION & OPS · GREAT LAKES DREDGE & DOCK CORP · CIK 0001940445
FILING MIX · LIFETIME38%/62%
BUYS
14
SELLS
23
TOTAL VALUE
$431.8K
COMPANIES
1
ACTIVE SINCE
Sep 2022
HOLDINGS NOW
191,598
AVG SELL PX
$11.77
TRADE KIND
SHOWING 37 / 37
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
2 backtested trades · 8 horizons · 4 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by David Johanson, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d2+50.00%+0.94%-0.91%+1.85%+1.85%—
14d2+50.00%+0.44%-0.71%+1.15%+1.15%—
30d2+50.00%-0.44%+0.42%-0.86%-0.86%—
60d2+0.00%+16.76%+1.31%+15.45%+15.45%—
90d2+0.00%+27.11%-1.02%+28.13%+28.13%—
180d2——+7.25%———
1y2(2 pending)——————
2y2(2 pending)——————
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
GLDD · 191,597.516 shares · as of Apr 1, 2026
047,89995,799143,698191,5982023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 14 buys / 23 sellsCOVERAGE · 16 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP-Project Acquisition & Ops
191,597.516——0Apr 1, 2026Apr 1, 2026 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
71,860——191,597.516Apr 1, 2026Apr 1, 2026 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
521.257$10.82$5.6K119,737.516Mar 25, 2026Apr 1, 2026 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP-Project Acquisition & Ops
3,080$16.93$52.1K113,858.259Mar 16, 2026Mar 18, 2026 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP-Project Acquisition & Ops
1,659$16.93$28.1K104,292.259Mar 16, 2026Mar 18, 2026 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP-Project Acquisition & Ops
1,029$16.93$17.4K112,829.259Mar 16, 2026Mar 18, 2026 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP-Project Acquisition & Ops
2,057$16.93$34.8K119,216.259Mar 16, 2026Mar 18, 2026 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
8,444——121,273.259Mar 16, 2026Mar 18, 2026 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
12,646——116,938.259Mar 16, 2026Mar 18, 2026 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
13,988——105,951.259Feb 23, 2026Feb 25, 2026 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE10b5-1
10b5-1 plan
2,100$13.96$29.3K91,963.259Dec 10, 2025Dec 12, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE10b5-1
10b5-1 plan
10,000$13.02$130.2K94,063.259Dec 3, 2025Dec 4, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
13,179——104,063.259May 8, 2025May 12, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
13,179——104,063.259May 8, 2025Mar 25, 2026 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP-Project Acquisition & Ops
547$9.54$5.2K91,162.259May 5, 2025May 7, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP-Project Acquisition & Ops
63$9.54$60190,982.259May 5, 2025May 7, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP-Project Acquisition & Ops
117$9.54$1.1K91,045.259May 5, 2025May 7, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP-Project Acquisition & Ops
98$9.54$93590,884.259May 5, 2025May 7, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
8,402——93,755.259Mar 17, 2025Mar 18, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
12,495——89,425.259Mar 17, 2025Mar 18, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP-Project Acquisition & Ops
1,658$8.70$14.4K76,930.259Mar 17, 2025Mar 18, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP-Project Acquisition & Ops
1,029$8.70$9.0K85,353.259Mar 17, 2025Mar 18, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP-Project Acquisition & Ops
2,046$8.70$17.8K92,454.259Mar 17, 2025Mar 18, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP-Project Acquisition & Ops
3,043$8.70$26.5K86,382.259Mar 17, 2025Mar 18, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP-Project Acquisition & Ops
645$7.04$4.5K78,588.259May 6, 2024May 7, 2024 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP-Project Acquisition & Ops
2,046$8.62$17.6K68,532.259Mar 15, 2024Mar 19, 2024 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
12,668——79,233.259Mar 15, 2024Mar 19, 2024 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
6,898——70,578.259Mar 15, 2024Mar 19, 2024 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP-Project Acquisition & Ops
1,967$8.62$17.0K66,565.259Mar 15, 2024Mar 19, 2024 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP-Project Acquisition & Ops
453$8.70$3.9K63,680.259Mar 5, 2024Mar 19, 2024 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP-Project Acquisition & Ops
453$8.70$3.9K63,680.259Mar 5, 2024Mar 6, 2024 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP-Project Acquisition & Ops
785$5.75$4.5K63,528.149May 5, 2023May 9, 2023 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
20,428——64,313.149Mar 15, 2023Mar 17, 2023 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP-Project Acquisition & Ops
952$5.32$5.1K43,254.149Mar 13, 2023Mar 14, 2023 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP-Project Acquisition & Ops
372$5.78$2.2K44,206.149Mar 6, 2023Mar 8, 2023 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
1,121——44,502.149Sep 6, 2022Sep 7, 2022 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
1,197——44,578.149Sep 6, 2022Sep 8, 2022 ↗View →
Other insiders · GLDD
Loading peer insiders…
About this filer
CIK 0001940445
ROLE
SVP-Project Acquisition & Ops
PRIMARY
GLDD
COMPANIES
1
ACTIVE SINCE
Sep 2022
MARKETPEEL · /INSIDER/0001940445DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

The morning brief, before the bell.

One short email. Insider buys, congressional trades, and plain-English analysis.

Feedback