Vanguard Group Files Amendment Reporting Zero Ownership in Great Lakes Dredge & Dock Corp

The Vanguard Group filed an amended Schedule 13G/A reporting that it no longer holds any beneficial ownership in Great Lakes Dredge & Dock Corp (GLDD) common stock as of March 13, 2026. This amendment reflects an internal realignment that occurred on January 12, 2026, where certain subsidiaries or business divisions of The Vanguard Group, Inc. will now report beneficial ownership separately on a disaggregated basis. The filing shows zero shares owned (0% ownership) across all categories - sole voting power, shared voting power, sole dispositive power, and shared dispositive power. The Vanguard Group certifies that the securities were acquired and held in the ordinary course of business and not for the purpose of influencing control of the issuer. This represents a complete divestment of Vanguard's previous position in GLDD.