☒ANNUAL REPORT PURSUANT TO SECTION13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF1934 or FLUOR 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 Rule405 of the Securi es Act.YesþNoo Indicate by check mark if the registrant is not required tofile reports pursuant to Sec on13 or Sec on15(d) of the Exchange Act.Yeso Noþ Indicate by check mark whether the registrant (1)hasfiled all reports required to befiled by Sec on13 or 15(d) of the Exchange Act during the preceding12months (or for such shorter period that the registrant was required tofile such reports), and (2)has been subject to suchfiling requirements for the past90days.YesþNoo Indicate by check mark whether the registrant has submi ed electronically every Interac ve Data File required to be submi ed pursuant to Rule405 ofRegula on S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit suchfiles).YesþNoo Indicate by check mark whether the registrant is a large acceleratedfiler, an acceleratedfiler, a non-acceleratedfiler, a smaller repor ng company or an emerginggrowth company. See the defini ons of "large acceleratedfiler," "acceleratedfiler," "smaller repor ng company" and "emerging growth company" in Rule12b-2 ofthe Exchange Act. Large acceleratedfilerþAcceleratedfiler oNon-acceleratedfileroSmallerrepor ngcompany☐Emerginggrowthcompany☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transi on period for complying with any new orrevisedfinancial accoun ng standards provided pursuant to Sec on13(a) of the Exchange Act.o Indicate by check mark whether the registrant hasfiled a report on and a esta on to its management's assessment of the effec veness of its internal control overfinancial repor ng under Sec on 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accoun ngfirm that prepared or issued its auditreport.☑ If securi es are registered pursuant to Sec on 12(b) of the Act, indicate by check mark whether thefinancial statements of the registrant included in thefilingreflect the correc on of an error to previously issuedfinancial statements.o As of June30, 2024, the aggregate market value of the registrant's common stock held by non-affiliates of the registrant was approximately $7.4billion based onthe closing sale price as reported on the New York Stock Exchange. As of January 31, 2025,168,786,393shares of the registrant’s common stock, $0.01par value per share, were outstanding. DOCUMENTS INCORPORATED BY REFERENCE Por ons of the Proxy Statement for the 2025 Annual Mee ng of Stockholders are incorporated by reference into Part III of this Form 10-K. FLUOR CORPORATION INDEX TO ANNUAL REPORT ON FORM 10-K For the Fiscal Year Ended December31, 2024PageGlossary of Terms1Forward-Looking Informa on2PART IItem1.Business3Item1A.Risk Factors12Item1B.Unresolved StaffComments28Item 1C.Cybersecurity28Item2.Proper es29Item3.Legal Proceedings30Item4.Mine Safety Disclosures30PART IIItem5.Market for Registrant's Common Equity, Related Stockholder Ma ers and Issuer Purchases of Equity Securi es31Item6.[Reserved]32Item7.Management's Discussion and Analysis of Financial Condi on and Results of Opera ons32Item7A.Quan ta ve and Qualita ve Disclosures About Market Risk42Item8.Financial Statements and Supplementary Data42Item9.Changes in and Disagreements with Accountants on Accoun ng and Financial Disclosure43Item9A.Controls and Procedures43Item9B.Other Informa on45Item9C.Disclosure Regarding Foreign Jurisdic ons that Prevent Inspec ons45PART IIIItem10.Directors, Execu ve Officers and Corporate Governance46Item11.Execu ve Compensa on46Item12.Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Ma ers46Item13.Certain Rela onships and Related Transac ons, and Director Independence47Item14.Principal Accountant Fees and Services47PART IVItem15.Exhibits and Financial Statement Schedules48Item16.Form10-K Summary51Signatures51 Glossary of Terms Forward-Looking Informa on From me to me, we make certain comments and disclosures in reports and statements, including this 202410-K, or statements aremade by its officers or directors, that, while based on reasonable assump ons, may be forward-looking in nature. Under the PrivateSecuri es Li ga on Reform Act of 1995, a "safe harbor" may be provided to us for certain of these forward-looking statements. We cau onreaders that forward-looking statements, including disclosures which use words such as "will, "may," "could," "should," "believes,""an cipates," "plans," "expects," "intends," "es mates," "projects," "poten al," "con nue" and similar statements are subject to variousfuture risks and uncertain es which could cause actual results of opera ons to differ materially from expecta ons. Any forward-looking statements t