UNITED STATES
 SECURITIES AND EXCHANGE COMMISSION
 Washington, D.C. 20549
 Form 10-K/A
 (Amendment No. 1)

 ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

 For the fiscal year ended December 31, 2024
 or

 TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

 For the transition period from to

 Commission file number:
 1-16129

 FLUOR CORPORATION
 (Exact name of registrant as specified in its charter)

 Delaware

 33-0927079

 (State or other jurisdiction of

 (I.R.S. Employer

 incorporation or organization)

 Identification No.)

 6700 Las Colinas Boulevard

 Irving,
 Texas

 75039

 (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:
 Title of Each Class
 Trading Symbol(s)
 Name of Each Exchange on Which Registered

 Common Stock, $.01 par value per share
 FLR
 New York Stock Exchange

 Securities registered pursuant to Section 12(g) of the Act:
 None
 Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes No o
 Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Exchange Act. Yes o 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 Exchange Act 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 o
 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 o
 Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company" and "emerging growth company" in Rule 12b-2 of the Exchange Act.

 Large accelerated filer

 Accelerated filer
 o
 Non-accelerated filer
 o
 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 any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o
 Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control 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 or issued 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 reflect the correction of an error to previously issued financial statements. o
 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). o
 Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes No
 As of June 30, 2024, the aggregate market value of the registrant's common stock held by non-affiliates of the registrant was approximately $ 7.4 billion based on the closing sale price as reported on the New York Stock Exchange.
 As of January 31, 2025, 168,786,393 shares of the registrant's common stock, $0.01 par value per share, were outstanding.

 DOCUMENTS INCORPORATED BY REFERENCE

 Portions of the Proxy Statement for the 2025 Annual Meeting of Stockholders are incorporated by reference into Part III of this Form 10-K.

 EXPLANATORY NOTE
 This Amendment No. 1 on Form 10-K/A (this "Amendment") amends our Annual Report on Form 10-K for the year ended December 31, 2024, originally filed on February 18, 2025 (the "Original Filing"). We are filing this Amendment to amend Item 15 of Part IV to include the consolidated financial statements of our significant equity investee, NuScale Power Corporation ("NuScale") as of December 31, 2024 and 2023 and for the years ended December 31, 2024, 2023 and 2022 in accordance with Rule 3-09 of Regulation S-X. NuScale's consolidated financial statements, which were prepared by NuScale, were audited in accordance with the standards of the Public Company Accounting Oversight Board (United States), and were filed with NuScale's Annual Report on Form 10-K for the year ended December 31, 2024, which was filed on March 3, 2025. Additionally, in connection with the filing of this Amendment and pursuant to the rules of the Securities and Exchange Commission (the "SEC"), we are including with this Amendment new certifications of our principal executive officer and principal financial officer pursuant to Sections 302 and 906 of the Sarbanes-Oxley Act of 2002.
 Except as described above, this Amendment does not modify or update in any way (i) the consolidated financial position, the results of operations or cash flows of Fluor or (ii) the disclosures in the Original Filing; nor does it reflect events occurring after the filing of the Original Filing. Accordingly, this Amendment should be read in conjunction with the Original Filing and any subsequent filings with the SEC.

 Except as the context otherwise requires, the terms "Fluor" or the "Registrant" as used herein are references to Fluor Corporation and its predecessors and references to the "company," "we," "us," or "our" as used herein shall include Fluor Corporation, its consolidated subsidiaries and joint ventures.

 FLUOR CORPORATION
 INDEX TO ANNUAL REPORT ON FORM 10-K/A
 For the Fiscal Year Ended December 31, 2024

 Page

 Item 15.

 Exhibits and Financial Statement Schedules

 Signatures

 Item 15. Exhibits and Financial Statement Schedules
 (a)Documents filed as part of the Original Filing:
 1.Financial Statements:
 Our consolidated financial statements at December 31, 2024 and 2023 and for each of the 3 years in the period ended December 31, 2024, together with the report of our independent registered public accounting firm on those consolidated financial statements were filed as part of the Original Filing, beginning on page F-1.
 2.Financial Statement Schedules:
 No financial statement schedules are presented since the required information is not present or not present in amounts sufficient to require submission of the schedule, or because the information required is included in the consolidated financial statements and notes thereto.
 3.Exhibits:

 Exhibit
 Description

 3.1
 Amended and Restated Certificate of Incorporation of the registrant (incorporated by reference to Exhibit 3.1 to the registrant's Current Report on Form 8-K (Commission file number 1-16129) filed on May 8, 2012).

 3.2
 Amended and Restated Bylaws of the registrant (incorporated by reference to Exhibit 3.1 to the registrant's Current Report on Form 8-K (Commission file number 1-16129) filed on November 4, 2022).

 4.1
 Senior Debt Securities Indenture between Fluor Corporation and Wells Fargo Bank, National Association, as trustee, dated as of September 8, 2011 (incorporated by reference to Exhibit 4.3 to the registrant's Current Report on Form 8-K (Commission file number 1-16129) filed on September 8, 2011).

 4.2
 First Supplemental Indenture between Fluor Corporation and Wells Fargo Bank, National Association, as trustee, dated as of September 13, 2011 (incorporated by reference to Exhibit 4.4 to the registrant's Current Report on Form 8-K (Commission file number 1-16129) filed on September 13, 2011).

 4.3
 Second Supplemental Indenture between Fluor Corporation and Wells Fargo Bank, National Association, as trustee, dated as of June 22, 2012 (incorporated by reference to Exhibit 4.2 to the registrant's Registration Statement on Form S-3 (Commission file number 333-182283) filed on June 22, 2012).

 4.4
 Third Supplemental Indenture between Fluor Corporation and Wells Fargo Bank, National Association, as trustee, dated as of November 25, 2014 (incorporated by reference to Exhibit 4.1 to the registrant's Current Report on Form 8-K (Commission file number 1-16129) filed on November 25, 2014).

 4.5
 Fourth Supplemental Indenture between Fluor Corporation and Wells Fargo Bank, National Association, as trustee, dated as of March 21, 2016 (incorporated by reference to Exhibit 4.3 to the registrant's Current Report on Form 8-K (Commission file number 1-16129) filed on March 21, 2016).

 4.6
 Fifth Supplemental Indenture between Fluor Corporation and Wells Fargo Bank, National Association, as trustee, dated as of August 29, 2018 (incorporated by reference to Exhibit 4.1 to the registrant's Current Report on Form 8-K (Commission file number 1-16129) filed on August 29, 2018).

 4.7
 Indenture, dated August 10, 2023, between Fluor Corporation and U.S. Bank Trust Company, National Association, as trustee (incorporated by reference to Exhibit 4.1 to the registrant's Current Report on Form 8-K (Commission file number 1-16129) filed on August 11, 2023).

 4.8
 Form of 1.125% Convertible Senior Note due 2029 (included in Exhibit 4.7).

 4.9
 Description of Securities (incorporated by reference to Exhibit 4.7 to the registrant's Annual Report on Form 10-K (Commission file number 1-16129) filed on February 21, 2023).

 10.1
 Fluor Corporation Amended and Restated 2008 Executive Performance Incentive Plan (incorporated by reference to Exhibit 10.1 to the registrant's Current Report on Form 8-K (Commission file number 1-16129) filed on May 3, 2013).

 10.2
 Form of Option Agreement (2015 grants) under the Fluor Corporation Amended and Restated 2008 Executive Performance Incentive Plan (incorporated by reference to Exhibit 10.26 to the registrant's Quarterly Report on Form 10-Q (Commission file number 1-16129) filed on April 30, 2015).

 10.3
 Form of Option Agreement (2017 grants) under the Fluor Corporation Amended and Restated 2008 Executive Performance Incentive Plan (incorporated by reference to Exhibit 10.6 to the registrant's Annual Report on Form 10-K (Commission file number 1-16129) filed on February 17, 2017).

 10.4
 Fluor Corporation 2017 Performance Incentive Plan (incorporated by reference to Exhibit 10.1 to the registrant's Registration Statement on Form S-8 (Commission file number 333-217653) filed on May 4, 2017).

 Exhibit
 Description

 10.5
 Form of Option Agreement under the Fluor Corporation 2017 Performance Incentive Plan (incorporated by reference to Exhibit 10.16 to the registrant's Quarterly Report on Form 10-Q (Commission file number 1-16129) filed on May 3, 2018).

 10.6
 Form of Option Agreement (2020 grant) under the Fluor Corporation 2017 Performance Incentive Plan (incorporated by reference to Exhibit 10.2 to the registrant's Quarterly Report on Form 10-Q (Commission file number 1-16129) filed on December 10, 2020).

 10.7
 Fluor Corporation 2020 Performance Incentive Plan (incorporated by reference to Exhibit 99.1 to the registrant's Registration Statement on Form S-8 (Commission file number 333-251426) filed on December 17, 2020.

 10.8
 Form of Option Agreement (2021 grant) under the Fluor Corporation 2020 Performance Incentive Plan (incorporated by reference to Exhibit 10.17 to the registrant's Annual Report on Form 10-K (Commission file number 1-16129) filed on February 22, 2022).

 10.9
 Form of Option Agreement (2022 grant) under the Fluor Corporation 2020 Performance Incentive Plan (incorporated by reference to Exhibit 10.2 to the registrant's Quarterly Report on Form 10-Q (Commission file number 1-16129) filed on May 6, 2022).

 10.10
 Form of Option Agreement (2023 grant) under the Fluor Corporation 2020 Performance Incentive Plan (incorporated by reference to Exhibit 10.1 to the registrant's Quarterly Report on Form 10-Q (Commission file number 1-16120) filed on May 5. 2023).

 10.11
 Form of Option Agreement (2024 grant) under the Fluor Corporation 2020 Performance Incentive Plan (incorporated by reference to Exhibit 10.1 to the registrant's Quarterly Report on Form 10-Q (Commission file number 1-16120) filed on May 3. 2024). *

 10.12
 Form of Restricted Stock Unit Agreement (2022 grant) under the Fluor Corporation 2020 Performance Incentive Plan (incorporated by reference to Exhibit 10.3 to the registrant's Quarterly Report on Form 10-Q (Commission file number 1-16129) filed on May 6, 2022).

 10.13
 Form of Restricted Stock Unit Agreement (2023 grant) under the Fluor Corporation 2020 Performance Incentive Plan (incorporated by reference to Exhibit 10.2 to the registrant's Quarterly Report on Form 10-Q (Commission file number 1-16120) filed on May 5. 2023).

 10.14
 Form of Restricted Stock Unit Agreement (2024 grant) under the Fluor Corporation 2020 Performance Incentive Plan (incorporated by reference to Exhibit 10.2 to the registrant's Quarterly Report on Form 10-Q (Commission file number 1-16120) filed on May 3. 2024). *

 10.15
 Form of Performance Award Agreement (2022 grant) under the Fluor Corporation 2020 Performance Incentive Plan (incorporated by reference to Exhibit 10.4 to the registrant's Quarterly Report on Form 10-Q (Commission file number 1-16129) filed on May 6, 2022).

 10.16
 Form of Performance Award (2023 grant) under the Fluor Corporation 2020 Performance Incentive Plan (incorporated by reference to Exhibit 10.3 to the registrant's Quarterly Report on Form 10-Q (Commission file number 1-16120) filed on May 5. 2023).

 10.17
 Form of Performance Award (2024 grant) under the Fluor Corporation 2020 Performance Incentive Plan (incorporated by reference to Exhibit 10.3 to the registrant's Quarterly Report on Form 10-Q (Commission file number 1-16120) filed on May 3. 2024). *

 10.18
 Form of Stock Growth Incentive Agreement under the Fluor Corporation 2020 Performance Incentive Plan (incorporated by reference to Exhibit 10.4 to the registrant's Quarterly Report on Form 10-Q (Commission file number 1-16120) filed on May 3. 2024). *

 10.19
 Fluor Executive Deferred Compensation Plan, as amended and restated effective April 21, 2003 (incorporated by reference to Exhibit 10.5 to the registrant's Annual Report on Form 10-K (Commission file number 1-16129) filed on February 29, 2008).

 10.20
 Fluor 409A Executive Deferred Compensation Program, as amended and restated effective January 1, 2017 (incorporated by reference to Exhibit 10.16 to the registrant's Quarterly Report on Form 10-Q (Commission file number 1-16129) filed on November 2, 2017).

 10.21
 Executive Severance Plan (incorporated by reference to Exhibit 10.7 to the registrant's Annual Report on Form 10-K (Commission file number 1-16129) filed on February 22, 2012).

 10.22
 Offer Letter, dated October 30, 2020, between the registrant and David E. Constable (incorporated by reference to Exhibit 10.26 to the registrant's Annual Report on Form 10-K (Commission file number 1-16129) filed on February 26, 2021).

 10.23
 Option Agreement, dated December 23, 2020, between the registrant and David E. Constable (incorporated by reference to Exhibit 10.27 to the registrant's Annual Report on Form 10-K (Commission file number 1-16129) filed on February 26, 2021).

 10.24
 Restricted Stock Unit Agreement, dated December 23, 2020, between the registrant and David E. Constable (incorporated by reference to Exhibit 10.28 to the registrant's Annual Report on Form 10-K (Commission file number 1-16129) filed on February 26, 2021).

 Exhibit
 Description

 10.25
 Summary of Fluor Corporation Non-Management Director Compensation (incorporated by reference to Exhibit 10.25 to the registrant's Annual Report on Form 10-K (Commission file number 1-16129) filed on February 21, 2023).

 10.26
 Form of Restricted Stock Unit Agreement granted to directors under the Fluor Corporation 2020 Performance Incentive Plan (incorporated by reference to Exhibit 10.32 to the registrant's Annual Report on Form 10-K (Commission file number 1-16129) filed on February 26, 2021).

 10.27
 Fluor Corporation Deferred Directors' Fees Program, as amended and restated effective January 1, 2002 (incorporated by reference to Exhibit 10.9 to the registrant's Annual Report on Form 10-K (Commission file number 1-16129) filed on March 31, 2003).

 10.28
 Fluor Corporation 409A Director Deferred Compensation Program, as amended and restated effective as of November 2, 2016 (incorporated by reference to Exhibit 10.22 to the registrant's Annual Report on Form 10-K (Commission file number 1-16129) filed on February 17, 2017).

 10.29
 Directors' Life Insurance Summary (incorporated by reference to Exhibit 10.12 to the registrant's Registration Statement on Form 10/A (Amendment No. 1) (Commission file number 1-16129) filed on November 22, 2000).

 10.30
 Form of Indemnification Agreement entered into between the registrant and each of its directors and executive officers (incorporated by reference to Exhibit 10.21 to the registrant's Annual Report on Form 10-K (Commission file number 1-16129) filed on February 25, 2009).

 10.31
 Form of Change in Control Agreement entered into between the registrant and each of its executive officers (incorporated by reference to Exhibit 10.1 to the registrant's Current Report on Form 8-K (Commission file number 1-16129) filed on June 29, 2010).

 10.32
 $1,800,000 Third Amended and Restated Revolving Loan and Letter of Credit Facility Agreement dated as of February 17 2022, among Fluor Corporation, the Lenders thereunder, BNP Paribas, as Administrative Agent and an Issuing Lender, Bank of America, N.A., as Syndication Agent, and Citibank, N.A. and Wells Fargo Bank, National Association, as Co-Documentation Agents (incorporated by reference to Exhibit 10.1 to the registrant's Current Report on Form 8-K (Commission file number 1-16129) filed on February 17, 2022).

 10.33
 Amendment No. 1 to the Third Amended and Restated Revolving Credit Agreement, dated as of August 4, 2023, by and among Fluor Corporation, the lenders party thereto from time to time, and BNP Paribas, as administrative agent (incorporated by reference to Exhibit 10.1 to the registrant's Current Report on Form 8-K (Commission file number 1-16129) filed on August 11, 2023).

 10.34
 Form of Capped Call Confirmation (incorporated by reference to Exhibit 10.2 to the registrant's Current Report on Form 8-K (Commission file number 1-16129) filed on August 11, 2023).

 19.1
 Insider Trading Policy.*

 21.1
 Subsidiaries of the registrant. *

 23.1
 Consent of Independent Registered Public Accounting Firm. *

 23.2
 Consent of Independent Registered Public Accounting Firm of NuScale Power Corporation. **

 31.1
 Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.*

 31.2
 Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.*

 31.3
 Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. **

 31.4
 Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. **

 32.1
 Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.*

 32.2
 Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. *

 32.3
 Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. **

 32.4
 Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.**

 95.1
 Mine Safety Disclosure.*

 97.1
 Compensation Recoupment (Clawback) Policy for Executive Officers (incorporated by reference to Exhibit 97.1 to the registrant's Annual Report on Form 10-K (Commission file number 1-16129) filed on February 20, 2024).

 99.1
 Consolidated financial statements of NuScale Power Corporation as of December 31, 2024 and 2023 and for the years ended December 31, 2024, 2023 and 2022 (incorporated by reference to Item 8 of NuScale Power Corporation's Annual Report on Form 10-K for the fiscal year ended December 31, 2024 filed with the SEC on March 3, 2025, File No. 001-04321). No other part of the NuScale Power Corporation Annual Report on Form 10-K is being incorporated by reference.

 101.INS

 101.SCH

 101.CAL

 Exhibit
 Description

 101.LAB

 101.PRE

 101.DEF

 _______________________________________________________________________________
 * Exhibit incorporated by reference to the corresponding exhibit filed with the Original Filing.
 ** Exhibit filed herewith.
 Management contract or compensatory arrangement.

 SIGNATURES
 Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

 FLUOR CORPORATION

 By:
 /s/ JOHN C. REGAN

 John C. Regan,
Chief Financial Officer

 March 7, 2025