SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM10-Q ☒QUARTERLY REPORT PURSUANT TO SECTION13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934For the quarterly period ended March 31, 2026Or☐TRANSITION REPORT PURSUANT TO SECTION13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934For the transition period fromtoCommission File Number:1-16129FLUOR CORPORATION(Exact name of registrant as specified in its charter)Delaware33-0927079(State or other jurisdiction of(I.R.S. Employerincorporation or organization)Identification No.)6700 Las Colinas BoulevardIrving, Texas75039(Address of principal executive offices)(Zip Code)469-398-7000 (Registrant’s telephone number, including area code) Securities registered pursuant to Section 12(b) of the Act: Indicate by check mark whether the registrant (1)hasfiled all reports required to befiled by Section13 or 15(d)of the SecuritiesExchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required tofile such reports), and(2)has been subject to suchfiling requirements for the past 90 days.YesNo Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuantto Rule405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit suchfiles).YesNo Indicate by check mark whether the registrant is a large acceleratedfiler, an acceleratedfiler, a non-acceleratedfiler, a smaller reportingcompany or an emerging growth company. See definitions of “large acceleratedfiler,” “acceleratedfiler,” “smaller reporting company” and“emerging growth company” in Rule12b-2 of the Exchange Act. (Check one): If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period forcomplying with any new or revisedfinancial accounting standards provided pursuant to Section13(a)of the Exchange Act. Indicate by check mark whether the registrant is a shell company (as defined in Rule12b-2 of the Exchange Act).Yes☐No☒ As of April30, 2026, 139,669,896 shares of the registrant’s common stock, $0.01par value, were outstanding. PartI:Financial InformationItem 1:Condensed Consolidated Financial Statements (Unaudited)Statement of OperationsStatement of Comprehensive IncomeBalance SheetStatement of Cash FlowsStatement of Changes in EquityNotes to Financial StatementsItem 2:Management’s Discussion and Analysis of Financial Condition and Results of OperationsItem 3:Quantitative and Qualitative Disclosures about Market RiskItem 4:Controls and ProceduresChanges in Consolidated Backlog (Unaudited) Other InformationItem 1:Legal ProceedingsItem 1A:Risk FactorsItem 2:Unregistered Sales of Equity Securities and Use of ProceedsItem 4:Mine Safety DisclosuresItem 5:Other InformationItem 6:Exhibits Signatures Glossary of Terms PARTI:FINANCIAL INFORMATION Item 1. Financial StatementsFLUOR CORPORATIONCONDENSED CONSOLIDATED STATEMENT OF OPERATIONSUNAUDITED UNAUDITED FLUOR CORPORATION CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN EQUITY UNAUDITED FLUOR CORPORATIONNOTES TO FINANCIAL STATEMENTS UNAUDITED 1. Principles of Consolidation Thesefinancial statements do not include footnotes and certainfinancial information presented annually under GAAP, and therefore,should be read in conjunction with our 2025 10-K. Accounting measurements at interim dates inherently involve greater reliance on estimatesthan at year-end. Although such estimates are based on management’s most recent assessment of the underlying facts and circumstancesutilizing the most current information available, our reported results of operations may not necessarily be indicative of results that we expectfor the full year. Thefinancial statements included herein are unaudited. We believe they contain all adjustments of a normal recurring nature which arenecessary to fairly present ourfinancial position and our operating results as of and for the periods presented. All significant intercompanytransactions of consolidated subsidiaries are eliminated. Certain amounts in tables may not total or agree back to thefinancial statements dueto immaterial rounding differences. We have evaluated all material events occurring subsequent to March31, 2026 through thefiling date ofthis 10-Q. 2. Recent Accounting Pronouncements In 2026, we adopted ASU 2025-05 on measurement of credit losses for accounts receivable and contract assets. This ASU introduces apractical expedient allowing us to assume that conditions at the balance sheet date remain unchanged over the life of these assets. Theadoption did not have any impact on our consolidated results. During 2024, the FASB issued ASU 2024-03 on the disaggregation of income statement expenses or "DISE." This ASU requires additionalfootnote disclosure of the details of certain income statement expense line items, without changing amounts reported on the consolidatedinco