NASDAQ:GLDD

Great Lakes Dredge & Dock Stock Insider Trading

Industrials > Engineering & Construction

Buy GLDD

*Your capital is at risk

$17.00

+0 (+0%)

At Close: Jun 02, 2026

Great Lakes Dredge & Dock Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be positive at 40.60. In total, the insiders bought 1.11M and sold 31.71B GLDD shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 100 transactions)	40.60
● Buy	1.11M shares
● Sell	31.71B shares
51% Buy Activity Negligible or No Correlation
Sell Signal Low Confidence Apr 01, 2026 Analysis Breakdown: Signal is highly questionable due to a strongly contradictory positive Insider Power Score of 40.6. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
Mar 31, 2026 Buy	Deferred Stock Units A-Award	Shanahan Kathleen M Director	Director	1 485 Value: $25.2K
Mar 31, 2026 Sell	Deferred Stock Units D-Return	Shanahan Kathleen M Director	Director	10 336 Value: $175.7K
Mar 25, 2026 Buy	Common Stock A-Award	Johanson David SVP-project Acquisition & Ops	Officer	521 Value: $6K
Mar 16, 2026 Sell	Common Stock F-InKind	Bayer Ryan Vp & Cao	Officer	1 282 Value: $21.7K
Mar 16, 2026 Sell	Common Stock F-InKind	Bayer Ryan Vp & Cao	Officer	854 Value: $14.5K
Mar 16, 2026 Buy	Common Stock A-Award	Bayer Ryan Vp & Cao	Officer	2 170 Value: $36.7K
Mar 16, 2026 Sell	Common Stock F-InKind	Beyko Eleni SVP - Offshore Energy	Officer	2 645 Value: $44.8K
Mar 16, 2026 Sell	Common Stock F-InKind	Beyko Eleni SVP - Offshore Energy	Officer	1 939 Value: $32.8K
Mar 16, 2026 Sell	Common Stock F-InKind	Beyko Eleni SVP - Offshore Energy	Officer	4 773 Value: $80.8K
Mar 16, 2026 Sell	Common Stock F-InKind	Beyko Eleni SVP - Offshore Energy	Officer	3 188 Value: $54.0K
Mar 16, 2026 Buy	Common Stock A-Award	Beyko Eleni SVP - Offshore Energy	Officer	9 852 Value: $166.8K
Mar 16, 2026 Sell	Common Stock F-InKind	Kornblau Scott Lee SVP & CFO	C-Suite Officer	2 926 Value: $49.5K
Mar 16, 2026 Sell	Common Stock F-InKind	Kornblau Scott Lee SVP & CFO	C-Suite Officer	8 762 Value: $148.3K
Mar 16, 2026 Sell	Common Stock F-InKind	Kornblau Scott Lee SVP & CFO	C-Suite Officer	5 851 Value: $99.1K
Mar 16, 2026 Buy	Common Stock A-Award	Kornblau Scott Lee SVP & CFO	C-Suite Officer	22 265 Value: $376.9K
Mar 16, 2026 Buy	Common Stock A-Award	Kornblau Scott Lee SVP & CFO	C-Suite Officer	14 868 Value: $251.7K
Mar 16, 2026 Sell	Common Stock F-InKind	Petterson Lasse CEO & President	CEO / President	15 529 Value: $262.9K
Mar 16, 2026 Sell	Common Stock F-InKind	Petterson Lasse CEO & President	CEO / President	20 033 Value: $339.2K
Mar 16, 2026 Sell	Common Stock F-InKind	Petterson Lasse CEO & President	CEO / President	37 202 Value: $629.8K
Mar 16, 2026 Sell	Common Stock F-InKind	Petterson Lasse CEO & President	CEO / President	31 057 Value: $525.8K
Mar 16, 2026 Buy	Common Stock A-Award	Petterson Lasse CEO & President	CEO / President	94 540 Value: $1.60M
Mar 16, 2026 Buy	Common Stock A-Award	Petterson Lasse CEO & President	CEO / President	78 924 Value: $1.34M
Mar 16, 2026 Sell	Common Stock F-InKind	Schiffer Vivienne SVP, Clo, Cco & Corp Secretary	Officer	2 060 Value: $34.9K
Mar 16, 2026 Sell	Common Stock F-InKind	Schiffer Vivienne SVP, Clo, Cco & Corp Secretary	Officer	2 058 Value: $34.8K
Mar 16, 2026 Sell	Common Stock F-InKind	Schiffer Vivienne SVP, Clo, Cco & Corp Secretary	Officer	3 461 Value: $58.6K

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks

ABOUT GREAT LAKES DREDGE & DOCK CORPORATION

Great Lakes Dredge & Dock Corporation provides dredging services in the United States. The company engages in capital dredging that consists of port expansion projects; coastal restoration and land reclamations; trench digging for pipelines, tunnels, and cables; and other dredging related to the construction of breakwaters, jetties, canals, and other marine structures. It is also involved in coastal protection projects that comprises of moving sa...

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