Great Lakes Dredge & Dock (GLDD) Insider Trading & Ownership $11.58 +0.30 (+2.66%) Closing price 08/8/2025 04:00 PM EasternExtended Trading$11.58 +0.01 (+0.04%) As of 08/8/2025 04:10 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Insider Trades Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Great Lakes Dredge & Dock (NASDAQ:GLDD) Insider Buying and Selling ActivityCurrentInsider OwnershipPercentage2.20%Number OfInsiders Buying(Last 12 Months)1Amount OfInsider Buying(Last 12 Months)$30.03KNumber OfInsiders Selling(Last 12 Months)4Amount OfInsider Selling(Last 12 Months)$1.76M Get GLDD Insider Trade Alerts Want to know when executives and insiders are buying or selling Great Lakes Dredge & Dock stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily. Email Address GLDD Insider Buying and Selling by Quarter Great Lakes Dredge & Dock Insider and Congressional Trades History Insiders and Members of Congress Insiders Only Members of Congress Only Transaction Type Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 2 Years 3 Years Time Frame Start Date End Date Export to Excel Transaction DateNameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionDetails6/3/2025Ronald StegerDirectorSell5,000$11.59$57,950.00 5/6/2025Eleni BeykoSVPSell22,579$10.26$231,660.54 3/4/2025Christopher GunstenSVPBuy3,875$7.75$30,031.25 11/11/2024Kathleen M ShanahanDirectorSell23,238$12.63$293,495.94 8/26/2024Lasse PettersonCEOSell28,709$9.24$265,271.16 8/23/2024Lasse PettersonCEOSell46,510$9.08$422,310.80 8/19/2024Lasse PettersonCEOSell53,771$9.06$487,165.26 (Data available from 1/1/2013 forward) GLDD Insider Trading Activity - Frequently Asked Questions Who is on Great Lakes Dredge & Dock's Insider Roster? The list of insiders at Great Lakes Dredge & Dock includes Christopher Gunsten, Earl L Shipp, Eleni Beyko, Kathleen M Shanahan, Lasse Petterson, Ronald Steger, and Ryan Levenson. Learn more on insiders at GLDD. What percentage of Great Lakes Dredge & Dock stock is owned by insiders? 2.20% of Great Lakes Dredge & Dock stock is owned by insiders. Learn more on GLDD's insider holdings. Which Great Lakes Dredge & Dock insiders have been buying company stock? The following insider purchased GLDD shares in the last 24 months: Christopher Gunsten ($30,031.25). How much insider buying is happening at Great Lakes Dredge & Dock? Insiders have purchased a total of 3,875 GLDD shares in the last 24 months for a total of $30,031.25 bought. Which Great Lakes Dredge & Dock insiders have been selling company stock? The following insiders have sold GLDD shares in the last 24 months: Eleni Beyko ($231,660.54), Kathleen M Shanahan ($293,495.94), Lasse Petterson ($1,174,747.22), and Ronald Steger ($57,950.00). How much insider selling is happening at Great Lakes Dredge & Dock? Insiders have sold a total of 179,807 Great Lakes Dredge & Dock shares in the last 24 months for a total of $1,757,853.70 sold. Great Lakes Dredge & Dock Key ExecutivesMr. Lasse J. Petterson (Age 68)CEO, President & Director Compensation: $1.65MMr. Scott Lee Kornblau (Age 53)Senior VP & Chief Financial Officer Compensation: $792.83kMr. David J. Johanson (Age 52)Senior Vice President of Project Acquisition & Operations Compensation: $584.99kMs. Vivienne R. Schiffer (Age 64)Senior VP, Chief Legal Officer, Chief Compliance Officer & Corporate Secretary Compensation: $615.86kMs. Eleni Beyko Ph.D. (Age 58)Senior Vice President of Offshore Wind Compensation: $602.84kMr. Christopher G. Gunsten P.E. (Age 54)Senior Vice President of Project Services & Fleet Engineering Compensation: $584.99k1 recent tradesMr. Ryan M. Bayer (Age 42)VP & Chief Accounting Officer Mr. Trond EllefsenVP and CTO of Technology & InnovationTina A. BaginskisDirector of Investor RelationsMr. Steven W. Becker (Age 62)Senior Vice President of Fleet Engineering More Insider Trading Tools from MarketBeat Related Companies Tutor Perini Insider Trading Ameresco Insider Trading NWPX Infrastructure Insider Trading Matrix Service Insider Trading Orion Group Insider Trading Quanta Services Insider Trading EMCOR Group Insider Trading Comfort Systems USA Insider Trading AECOM Insider Trading MasTec Insider Trading Insider Tracking Tools CEO Purchases/Sales CFO Purchases/Sales Top Insider Buying Stocks Top Insider Selling Stocks Insider Trades Screener Insider Trades Newsletter Congressional Stock Trades Insider Trading By Country U.S. Insider Trading Activity Canadian Insider Trading Activity U.K. Insider Trading Activity Australia Insider Trading Activity Latest Articles Strategy Insiders Buy In While Analysts Predict Big UpsideThe Bottom Is in For These 3 Small-Cap Stocks Insiders Are Buying3 Catalysts Driving Plug Power’s Turnaround CaseInsider Selling Hits Market Leaders—Should You Be Worried?Insiders Spent Millions on These 3 Stocks Over the Past 2 Months This page (NASDAQ:GLDD) was last updated on 8/10/2025 by MarketBeat.com Staff From Our PartnersGENIUS Act: Cancel Your Money?A new law called the GENIUS Act could quietly trigger the most radical shift in American finance in decades. 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