Great Lakes Dredge & Dock Corp 2024年度报告

☒ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934For the fiscal year endedDecember 31,2024or☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934For the transition period fromtoCommission file number:001-33225 Great Lakes Dredge & Dock Corporation(Exact name of registrant as specified in its charter) Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.Yes☐No☒ Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.Yes☐No☒Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports) and (2) has been subject to such filing requirements for the past 90 days.Yes☒No☐ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).Yes☒No☐ Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerginggrowth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of theExchange Act. Large accelerated filer☐Accelerated filer☒Non-accelerated filer☐Smaller reporting company☐Emerging growth company☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with anynew or revisedfinancial accounting standards provided pursuant to Section 13(a) of the Exchange Act.☐Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internalcontrol over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared orissued its audit report.☒If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflectthe correction of an error to previously issued financial statements.☐Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b).☐ Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).Yes☐No☒The aggregate market value of common stock held by non-affiliates of the Registrant was $572,246,283at June 30, 2024. The aggregate market valuewas computed using the closing price of the common stock as of June 28, 2024 on the Nasdaq Stock Market. (For purposes of calculating the foregoing amount only,all directors andexecutive officers of the registrant have been treated as affiliates.)As of February 17, 2025,67,282,528shares of Registrant’s Common Stock, par value $.0001 per share, were outstanding. DOCUMENTS INCORPORATED BY REFERENCE Documents Incorporated by ReferencePortions of the Proxy Statement to be filed with the Securities and Exchange Commission in connection with the 2025 Annual Meeting of Stockholders. TABLE OF CONTENTS PART I Item 1.BusinessItem 1A.Risk FactorsItem 1B.Unresolved Staff CommentsItem 1C.CybersecurityItem 2.PropertiesItem 3.Legal ProceedingsItem 4.Mine Safety Disclosures PART II Item 5.Market for the Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities31Item 6.[Reserved]32Item 7.Management’s Discussion and Analysis of Financial Condition and Results of Operations33Item 7A.Quantitative and Qualitative Disclosures about Market Risk44Item 8.Financial Statements and Supplementary Data44Item 9.Changes in and Disagreements With Accountants on Accounting and Financial Disclosure44Item 9A.Controls and Procedures44Item 9B.Other Information48Item 9C.Disclosure Regarding Foreign Jurisdictions that Prevent Inspections48 PART III Item 10.Directors, Executive Officers and Corporate Governance49Item 11.Executive Compensation49Item 12.Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters49Item 13.Certain Relationships and Related Transactions, and Director Independence49Item 14.Principal Accounting Fees and Services49 PART IV Item 15.Exhibits, Financial Statement Schedules50Item 16.Form 10-K Summary50SIGNATURES83 Cautionary Note Regarding Forward-Looking Statements Certain sta