Question 1

Who are the insiders buying Great Lakes Dredge & Dock CORP stock?

Accepted Answer

InsiderAct tracks all open-market purchases of Great Lakes Dredge & Dock CORP stock by corporate insiders — including officers, directors, and shareholders owning more than 10% — sourced from public SEC Form 4 filings.

Question 2

What does insider buying at a company mean?

Accepted Answer

When a corporate officer, director, or major shareholder purchases their own company's stock on the open market using personal funds, it signals confidence in the company's outlook. This is especially meaningful when multiple insiders buy within the same 7–14 day window (cluster buying) or when the purchase size exceeds $100,000.

Question 3

How do I find cluster buying signals for a company?

Accepted Answer

InsiderAct automatically detects cluster buying — two or more insiders independently purchasing shares within a 14-day window. When a cluster buy signal is active for a company, it appears prominently on the company's InsiderAct page and on the Signals tab.

Question 4

Has Great Lakes Dredge & Dock CORP had any recent large insider purchases?

Accepted Answer

InsiderAct tracks all open-market purchases of $100,000 or more at Great Lakes Dredge & Dock CORP. Large insider purchases are flagged as high-conviction signals because they represent meaningful personal capital commitments by executives or directors who have direct visibility into the company's operations and prospects.

Question 5

Where do the insider transactions on this page come from?

Accepted Answer

All transactions shown on InsiderAct company pages are sourced directly from SEC EDGAR Form 4 filings — the mandatory public disclosures that corporate insiders must submit within 2 business days of any stock transaction. InsiderAct ingests these filings in near real time and filters for open-market purchases and sales.

								1WStock price change 1 week after insider bought. Small number below shows return vs S&P 500.	1MStock price change 1 month after insider bought.
2026-04-01	2026-04-01	Schiffer Vivienne	CLO	Tender Special	144,817	$0.00	$0	N/A	N/A
2026-04-01	2026-04-01	Schiffer Vivienne	CLO	Award	28,945	$0.00	$0	N/A	N/A
2026-04-01	2026-04-01	Beyko Eleni	SVP	Tender Special	151,312	$0.00	$0	N/A	N/A
2026-04-01	2026-04-01	Steger Ronald	Director	Tender Special	20,404	$0.00	$0	N/A	N/A
2026-04-01	2026-04-01	Steger Ronald	Director	Disposition	45,068	$0.00	$0	N/A	N/A
2026-04-01	2026-04-01	Shipp Earl L	Director	Tender Special	42,619	$0.00	$0	N/A	N/A
2026-04-01	2026-04-01	Shanahan Kathleen M	Director	Tender Special	76,375	$0.00	$0	N/A	N/A
2026-04-01	2026-04-01	Dickerson Lawrence R	Director	Tender Special	86,217	$0.00	$0	N/A	N/A
2026-04-01	2026-04-01	Dickerson Lawrence R	Director	Disposition	76,962	$0.00	$0	N/A	N/A
2026-04-01	2026-04-01	Armstrong Dana A	Director	Tender Special	8,436	$0.00	$0	N/A	N/A

GLDD

Latest Insider Transactions

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