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SK

Scott Lee Kornblau

GLDD
SVP, CFO & TREASURER · GREAT LAKES DREDGE & DOCK CORP · CIK 0001724302
FILING MIX · LIFETIME43%/57%
BUYS
16
SELLS
21
TOTAL VALUE
$1.91M
COMPANIES
1
ACTIVE SINCE
Oct 2021
HOLDINGS NOW
0
AVG SELL PX
$10.73
TRADE KIND
SHOWING 37 / 37
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
1 backtested trades · 8 horizons · 2 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Scott Lee Kornblau, 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
7d1+0.00%+0.96%+1.16%-0.20%-0.20%—
14d1+0.00%+2.62%+1.03%+1.59%+1.59%—
30d1+0.00%+4.45%+2.56%+1.89%+1.89%—
60d1+100.00%-2.27%+2.69%-4.96%-4.96%—
90d1+0.00%+9.33%+7.16%+2.17%+2.17%—
180d1+0.00%+35.83%+8.60%+27.23%+27.23%—
1y1(1 pending)——————
2y1(1 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 · 0 shares · as of Apr 1, 2026
061,032122,063183,095244,12620222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 16 buys / 21 sellsCOVERAGE · 19 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
90,518——244,126.24Apr 1, 2026Apr 1, 2026 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP & CFO
244,126.24——0Apr 1, 2026Apr 1, 2026 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP & CFO
2,926$16.93$49.5K144,591.24Mar 16, 2026Mar 18, 2026 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP & CFO
8,762$16.93$148.3K147,517.24Mar 16, 2026Mar 18, 2026 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP & CFO
4,719$16.93$79.9K134,014.24Mar 16, 2026Mar 18, 2026 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP & CFO
5,851$16.93$99.1K153,608.24Mar 16, 2026Mar 18, 2026 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
22,265——156,279.24Mar 16, 2026Mar 18, 2026 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
14,868——159,459.24Mar 16, 2026Mar 18, 2026 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
26,603——138,733.24Feb 23, 2026Feb 25, 2026 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE10b5-1
10b5-1 plan
59,805$11.48$686.3K112,130.24Aug 11, 2025Aug 13, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
25,058——171,935.24May 8, 2025May 12, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
25,058——171,935.24May 8, 2025Mar 25, 2026 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP & CFO
1,070$9.54$10.2K146,877.24May 5, 2025May 7, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP & CFO
1,676$9.54$16.0K147,947.24May 5, 2025May 7, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
14,794——137,250.24Mar 17, 2025Mar 18, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP & CFO
5,822$8.70$50.7K131,428.24Mar 17, 2025Mar 18, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
30,000——161,428.24Mar 17, 2025Mar 18, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP & CFO
11,805$8.70$102.7K149,623.24Mar 17, 2025Mar 18, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP & CFO
4,718$8.70$41.0K112,039.24Mar 17, 2025Mar 18, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP & CFO
8,657$8.70$75.3K125,382.24Mar 17, 2025Mar 18, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
22,000——134,039.24Mar 17, 2025Mar 18, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP & CFO
2,926$8.70$25.5K122,456.24Mar 17, 2025Mar 18, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP, CFO & Treasurer
1,676$7.04$11.8K116,757.24May 6, 2024May 7, 2024 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP, CFO & Treasurer
19,675$7.19$141.5K118,433.24Apr 25, 2024Apr 29, 2024 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
50,000——138,108.24Apr 25, 2024Apr 29, 2024 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP, CFO & Treasurer
4,780$8.62$41.2K70,521.24Mar 15, 2024Mar 19, 2024 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
12,145——75,301.24Mar 15, 2024Mar 19, 2024 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
22,305——88,108.24Mar 15, 2024Mar 19, 2024 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP, CFO & Treasurer
4,718$8.62$40.7K65,803.24Mar 15, 2024Mar 19, 2024 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP, CFO & Treasurer
1,850$8.70$16.1K63,156.24Mar 5, 2024Mar 6, 2024 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP, CFO & Treasurer
1,691$5.75$9.7K62,405May 5, 2023May 9, 2023 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
35,968——64,096Mar 15, 2023Mar 17, 2023 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
SVP, CFO & Treasurer
2,133$5.78$12.3K25,643Mar 6, 2023Mar 8, 2023 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
12,341——27,341May 5, 2022May 9, 2022 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
12,776——27,776May 5, 2022Jun 10, 2022 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
Chief Financial Officer
1,961$14.78$29.0K13,039Mar 7, 2022Mar 10, 2022 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
15,000$15.10$226.5K15,000Oct 1, 2021Oct 5, 2021 ↗View →
Other insiders · GLDD
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About this filer
CIK 0001724302
ROLE
SVP, CFO & Treasurer
PRIMARY
GLDD
COMPANIES
1
ACTIVE SINCE
Oct 2021
MARKETPEEL · /INSIDER/0001724302DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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