Armstrong Dana A - Insider Non-Derivative Transactions at Great Lakes Dredge & Dock CORP (GLDD) - (SEC)

Updated on January 3, 2026.

According to recent SEC insider information filed on Sep 30, 2025, Armstrong Dana A's relationship to Great Lakes Dredge & Dock CORP (GLDD) is Director, and currently has 6,607 shares of Common Stock.

The chart below shows the number of shares owned, and the table shows the recent insider transactions.

You can see similar information for other GLDD insiders.

Related Topics: SEC Topic List.

Data Source: SEC.

Armstrong Dana A - Insider Non-Derivative Transactions of GLDD Common Stock

Armstrong Dana A - Insider Non-Derivative Transactions at GLDD

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Date	Transaction	No. of Shares	Shares Owned After Transactions
Oct 1, 2025	Acquisition -- (Common Stock)	2002	6607
Jul 1, 2025	Acquisition -- (Common Stock)	1969	4605
Apr 1, 2025	Acquisition -- (Common Stock)	2636	2636
Apr 1, 2025	Acquisition -- (Common Stock)	4833	4833