Great Lakes Dredge & Dock Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqGS:GLDD Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
04 Mar 25	BuyUS$30,031	Christopher Gunsten	Individual	3,875	US$7.75
14 Nov 24	SellUS$191,799	Lawrence Dickerson	Individual	15,936	US$12.04
12 Nov 24	SellUS$67,118	Lawrence Dickerson	Individual	5,323	US$12.61
11 Nov 24	SellUS$153,120	Ronald Steger	Individual	12,000	US$12.76
11 Nov 24	SellUS$293,542	Kathleen Shanahan	Individual	23,238	US$12.63

Insider Trading Volume

Insider Buying: GLDD insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of GLDD?
Owner Type	Number of Shares	Ownership Percentage
Individual Insiders	1,608,075	2.39%
Hedge Funds	3,704,000	5.5%
General Public	9,613,271	14.3%
Institutions	52,435,350	77.8%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 65.49% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
10.6%	BlackRock, Inc.	7,163,799	US$68.3m	0.7%	no data
6.6%	Dimensional Fund Advisors LP	4,443,586	US$42.4m	0.51%	0.01%
6.43%	Jennison Associates LLC	4,329,242	US$41.3m	-0.1%	0.02%
5.76%	The Vanguard Group, Inc.	3,877,588	US$37.0m	0.72%	no data
5.5%	Harvey Partners, LLC	3,704,000	US$35.3m	1.55%	4.43%
4.25%	AllianceBernstein L.P.	2,866,123	US$27.3m	-26.3%	0.01%
3.07%	TCW Group, Inc.	2,070,834	US$19.8m	-1.19%	0.16%
2.4%	American Century Investment Management Inc	1,615,591	US$15.4m	40.7%	0.01%
2.35%	State Street Global Advisors, Inc.	1,579,725	US$15.1m	2.55%	no data
2.32%	Geode Capital Management, LLC	1,559,822	US$14.9m	-0.13%	no data
1.99%	Minerva Advisors LLC	1,341,807	US$12.8m	0%	9.3%
1.81%	Private Management Group Inc	1,218,857	US$11.6m	-1.54%	0.46%
1.32%	Lasse Petterson	890,857	US$8.5m	34.1%	no data
1.17%	JPMorgan Chase & Co, Brokerage and Securities Investments	789,548	US$7.5m	298%	no data
1.04%	Millennium Management LLC	698,071	US$6.7m	254%	0.01%
1.03%	Charles Schwab Investment Management, Inc.	691,988	US$6.6m	0%	no data
0.99%	Next Century Growth Investors LLC	667,465	US$6.4m	-0.07%	0.56%
0.99%	Northern Trust Global Investments	664,091	US$6.3m	8.61%	no data
0.95%	The London Company of Virginia, LLC	642,744	US$6.1m	0%	0.03%
0.92%	BNPP Asset Management Holding	618,870	US$5.9m	-3.38%	0.01%
0.89%	Teachers Insurance and Annuity Association-College Retirement Equities Fund	597,411	US$5.7m	31.8%	no data
0.81%	Prescott Group Capital Management L.L.C.	546,870	US$5.2m	0%	0.66%
0.77%	D. E. Shaw & Co., L.P.	521,117	US$5.0m	-31.7%	0.01%
0.76%	Morgan Stanley, Investment Banking and Brokerage Investments	509,392	US$4.9m	33.1%	no data
0.75%	Kennedy Capital Management LLC	503,144	US$4.8m	-9.85%	0.12%

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2025/05/06 12:48
End of Day Share Price	2025/05/06 00:00
Earnings	2025/03/31
Annual Earnings	2024/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Great Lakes Dredge & Dock Corporation is covered by 10 analysts. 4 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Andrew Kaplowitz	Barclays
John Kasprzak	BB&T Capital Markets
Jonathan Tanwanteng	CJS Securities, Inc.