BlackRock, Inc. Increases Stake in Great Lakes Dredge & Dock CORP to 8.2%

BlackRock, Inc. filed a Schedule 13G/A on April 28, 2026, disclosing an increased ownership stake in Great Lakes Dredge & Dock CORP (GLDD). As of the event date on March 31, 2026, BlackRock reported beneficial ownership of 5,467,592 shares of common stock, representing 8.2% of the company's outstanding shares. This filing marks the 17th amendment to their position. The reporting entity holds sole voting power over 5,306,560 shares and sole dispositive power over the full 5,467,592 shares. The shares were acquired in the ordinary course of business, without the intent to influence or change control of the issuer. Various subsidiary business units of BlackRock are identified as the direct holders of these securities. This position represents a notable increase from the previously reported 0.0% ownership level in the provided supplemental data, reflecting a significant accumulation of shares in the dredging and marine infrastructure provider.