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LD

Lawrence R. Dickerson

GLDD
DIRECTOR · GREAT LAKES DREDGE & DOCK CORP · CIK 0001249072
FILING MIX · LIFETIME77%/23%
BUYS
48
SELLS
14
TOTAL VALUE
$554.5K
COMPANIES
3
ACTIVE SINCE
Dec 2019
HOLDINGS NOW
227,125
AVG SELL PX
$17.18
TRADE KIND
SHOWING 62 / 62
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
7 backtested trades · 8 horizons · 2 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Lawrence R. Dickerson, 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
7d7+71.43%-2.50%-1.64%-0.87%-0.65%—
14d7+57.14%-3.04%-0.20%-2.83%-0.67%—
30d7+57.14%-5.15%+0.95%-6.11%-3.07%—
60d7+57.14%-4.84%+0.72%-5.56%-4.38%—
90d7+85.71%-5.45%+1.70%-7.15%-7.90%—
180d7+71.43%-2.97%+3.34%-6.32%-5.39%—
1y7+57.14%-11.61%+5.98%-17.59%-16.77%—
2y7(2 pending)+100.00%-44.70%+8.82%-53.52%-49.34%—
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
025,85251,70477,555103,4072020202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2019
2020
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 48 buys / 14 sellsCOVERAGE · 27 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
OIS
OIL STATES INTERNATIONAL, INC
PURCHASEGRANT
Stock grant
16,760——175,613May 12, 2026May 13, 2026 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
86,217——0Apr 1, 2026Apr 1, 2026 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
76,962——0Apr 1, 2026Apr 1, 2026 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
2,938——76,962Mar 31, 2026Apr 1, 2026 ↗View →
MUR
MURPHY OIL CORP
SALE
7,497——37,636Feb 5, 2026Feb 6, 2026 ↗View →
MUR
MURPHY OIL CORP
PURCHASE
7,886——51,512Feb 5, 2026Feb 6, 2026 ↗View →
MUR
MURPHY OIL CORP
PURCHASEGRANT
Stock grant
6,316——45,133Feb 4, 2026Feb 6, 2026 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
3,806——74,024Dec 31, 2025Jan 5, 2026 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
4,165——70,218Sep 30, 2025Oct 2, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
4,097——66,053Jun 30, 2025Jul 1, 2025 ↗View →
OIS
OIL STATES INTERNATIONAL, INC
PURCHASEGRANT
Stock grant
31,185——158,853May 13, 2025May 14, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
5,740——61,956Mar 31, 2025Apr 1, 2025 ↗View →
MUR
MURPHY OIL CORP
PURCHASEGRANT
Stock grant
7,497——38,817Feb 5, 2025Feb 6, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
4,069——86,217Dec 31, 2024Jan 3, 2025 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
15,936$12.04$191.8K82,148Nov 14, 2024Nov 15, 2024 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
5,323$12.61$67.1K98,084Nov 12, 2024Nov 13, 2024 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
4,363——103,407Sep 30, 2024Oct 2, 2024 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
5,232——99,044Jun 28, 2024Jul 1, 2024 ↗View →
OIS
OIL STATES INTERNATIONAL, INC
PURCHASEGRANT
Stock grant
33,259——127,668May 7, 2024May 8, 2024 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
5,250——93,812Mar 28, 2024Apr 1, 2024 ↗View →
MUR
MURPHY OIL CORP
PURCHASEGRANT
Stock grant
5,268——31,320Feb 7, 2024Feb 8, 2024 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
5,982——56,216Dec 29, 2023Jan 3, 2024 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
5,763——50,234Sep 29, 2023Oct 2, 2023 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
5,630——44,471Jun 30, 2023Jul 3, 2023 ↗View →
OIS
OIL STATES INTERNATIONAL, INC
PURCHASEGRANT
Stock grant
21,708——94,409May 9, 2023May 10, 2023 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
8,460——38,841Mar 31, 2023Apr 3, 2023 ↗View →
MUR
MURPHY OIL CORP
PURCHASEGRANT
Stock grant
4,740——26,052Feb 1, 2023Feb 3, 2023 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
11,408——24,388Dec 30, 2022Jan 3, 2023 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
8,956——18,973Sep 30, 2022Jan 11, 2023 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
6,127——12,980Sep 30, 2022Oct 4, 2022 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
5,179——10,017Jun 30, 2022Jan 11, 2023 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
3,543——6,853Jun 30, 2022Jul 5, 2022 ↗View →
MUR
MURPHY OIL CORP
SALE
4,614$43.70$201.6K43,626Jun 7, 2022Jun 7, 2022 ↗View →
OIS
OIL STATES INTERNATIONAL, INC
PURCHASEGRANT
Stock grant
19,470——72,701May 10, 2022May 11, 2022 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
4,838——4,838Mar 31, 2022Jan 11, 2023 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
3,310——3,310Mar 31, 2022Apr 4, 2022 ↗View →
MUR
MURPHY OIL CORP
SALE
7,156——21,312Feb 4, 2022Feb 7, 2022 ↗View →
MUR
MURPHY OIL CORP
PURCHASE
7,995——48,240Feb 4, 2022Feb 7, 2022 ↗View →
MUR
MURPHY OIL CORP
PURCHASEGRANT
Stock grant
6,091——28,468Feb 2, 2022Feb 4, 2022 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
2,914——88,562Dec 31, 2021Jan 4, 2022 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
1,518$14.59$22.1K85,648Oct 21, 2021Oct 25, 2021 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
3,036——87,166Sep 30, 2021Oct 4, 2021 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
1,568$14.50$22.7K84,130Jul 12, 2021Jul 14, 2021 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
3,136——85,698Jun 30, 2021Jul 2, 2021 ↗View →
OIS
OIL STATES INTERNATIONAL, INC
PURCHASEGRANT
Stock grant
19,470——53,231May 11, 2021May 12, 2021 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
1,571$15.42$24.2K82,562Apr 9, 2021Apr 13, 2021 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
3,142——84,133Mar 31, 2021Apr 2, 2021 ↗View →
MUR
MURPHY OIL CORP
SALE
8,854——22,377Feb 5, 2021Feb 8, 2021 ↗View →
MUR
MURPHY OIL CORP
SALE
7,073——31,231Feb 5, 2021Feb 8, 2021 ↗View →
MUR
MURPHY OIL CORP
PURCHASE
9,256——32,266Feb 5, 2021Feb 8, 2021 ↗View →
MUR
MURPHY OIL CORP
PURCHASE
7,979——30,989Feb 5, 2021Feb 8, 2021 ↗View →
MUR
MURPHY OIL CORP
PURCHASEGRANT
Stock grant
15,221——38,304Feb 3, 2021Feb 5, 2021 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
SALE
1,735$14.30$24.8K80,991Jan 12, 2021Jan 14, 2021 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
3,469——82,726Dec 31, 2020Jan 4, 2021 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
4,804——79,257Sep 30, 2020Oct 2, 2020 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
4,934——74,453Jun 30, 2020Jul 2, 2020 ↗View →
OIS
OIL STATES INTERNATIONAL, INC
PURCHASEGRANT
Stock grant
11,211——33,761May 12, 2020May 12, 2020 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
5,505——69,519Mar 31, 2020Apr 2, 2020 ↗View →
MUR
MURPHY OIL CORP
PURCHASEGRANT
Stock grant
8,854——23,083Feb 5, 2020Feb 6, 2020 ↗View →
MUR
MURPHY OIL CORP
SALE
6,935——14,229Jan 31, 2020Feb 4, 2020 ↗View →
MUR
MURPHY OIL CORP
PURCHASE
7,775——23,010Jan 31, 2020Feb 4, 2020 ↗View →
GLDD
GREAT LAKES DREDGE & DOCK CORP
PURCHASEGRANT
Stock grant
4,033——64,014Dec 31, 2019Jan 3, 2020 ↗View →
Other insiders · GLDD
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About this filer
CIK 0001249072
ROLE
Director
PRIMARY
GLDD
COMPANIES
3
ACTIVE SINCE
Dec 2019
MARKETPEEL · /INSIDER/0001249072DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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