<div id="readability-page-1"><div><p><span>Johanson David Vice President of Great Lakes Dredge &amp; Dock Corp [GLDD] filed a Form 4 on December 4, 2025 with the Securities and Exchange Commission disclosing the following changes in ownership:</span></p><div><table><tbody><tr><td><span>Date</span></td><td><span>12/3/25</span></td></tr><tr><td><span>Transaction</span></td><td><span>Planned Sale(1)</span></td></tr><tr><td><span>Shares</span></td><td><span>10,000</span></td></tr><tr><td><span>Price</span></td><td><span>$13.02</span></td></tr><tr><td><span>Value</span></td><td><span>$130,155</span></td></tr></tbody></table></div><p><span>Ending Holdings: 94,063 - Direct</span></p><ul><li><span>(1)</span></li><li><span>Executed pursuant to a prearranged trading plan (10b5-1).</span></li></ul><p><span>For a free trial, or to learn more about our insider trading analysis and data services, please visit http://www.washingtonservice.com or contact us at (301) 913-5100 or send an email to info@washingtonservice.com.</span></p><p><span>Founded in 1970, The Washington Service provides securities professionals with financial, economic and public policy research and data.</span></p><span> </span></div></div>

GLDD

<p>Johanson David, Vice President of Great Lakes Dredge & Dock Corp, sold 10,000 shares valued at $130,155 on December 3, 2025, as disclosed in a Form 4 filing with the SEC. This transaction was executed under a prearranged trading plan (10b5-1). After the sale, Johanson holds 94,063 shares directly.</p>

VP Johanson Sells 10,000 ($130.2K) Of Great Lakes Dredge & Dock Corp [GLDD]