UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of

the Securities Exchange Act of 1934 (Amendment No. )

Filed by the Registrant ☒

Filed by a Party other than the Registrant ☐

Check the appropriate box:

☐	Preliminary Proxy Statement

☐	Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

☐	Definitive Proxy Statement

☒	Definitive Additional Materials

☐	Soliciting Material under § 240.14a-12

TECHNIPFMC PLC

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check all boxes that apply):

☒	No fee required

☐	Fee paid previously with preliminary materials

☐	Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11

*If you choose to vote these shares in person at the meeting, you must request a “legal proxy.” To do so, please follow the instructions at www.ProxyVote.com or request a paper copy of the materials, which will contain the appropriate instructions. Please check the meeting materials for any special requirements for meeting attendance. Smartphone users Point your camera here and vote without entering a control number For complete information and to vote, visit www.ProxyVote.com Control # V84883-P41625 Your Vote Counts! You invested in TECHNIPFMC PLC and it’s time to vote! You have the right to vote on proposals being presented at the Annual General Meeting of Shareholders. This is an important notice regarding the availability of proxy materials for the shareholder meeting to be held on May 1, 2026. Get informed before you vote View the Notice of Annual General Meeting of Shareholders and Proxy Statement, Annual Report on Form 10-K, and U.K. Annual Report and Accounts online OR you can receive a free paper or email copy of the material(s) by requesting prior to April 17, 2026. If you would like to request a copy of the material(s) for this and/or future shareholder meetings, you may (1) visit www.ProxyVote.com, (2) call 1-800-579-1639 or (3) send an email to [email protected]. If sending an email, please include your control number (indicated below) in the subject line. Unless requested, you will not otherwise receive a paper or email copy. Shareholder Meeting Registration To vote and/or attend the meeting, go to the “Attend a Meeting” link at www.proxyvote.com. TECHNIPFMC PLC 2026 Annual General Meeting of Shareholders Vote by April 30, 2026 11:59 PM ET Vote in Person at the Meeting* May 1, 2026 4:00 P.M., London Time HADRIAN HOUSE WINCOMBLEE ROAD NEWCASTLE UPON TYNE NE6 3PL UNITED KINGDOM

TECHNIPFMC PLC 2026 Annual General Meeting of Shareholders Vote by April 30, 2026 11:59 PM ET THIS IS NOT A VOTABLE BALLOT This is an overview of the proposals being presented at the upcoming shareholder meeting. Please follow the instructions on the reverse side to vote these important matters. Vote at www.ProxyVote.com V84884-P41625 1. Election of Directors – To elect each of our nine director nominees for a term expiring at the Company’s 2027 Annual General Meeting of Shareholders: 1a. Douglas J. Pferdehirt For 1b. Robert G. Gwin For 1c. Eleazar de Carvalho Filho For 1d. Claire S. Farley For 1e. John O’Leary For 1f. Margareth Øvrum For 1g. Kay G. Priestly For 1h. John Yearwood For 1i. Sophie Zurquiyah For 2. 2025 U.S. Say-on-Pay for Named Executive Officers: To approve, as a non-binding advisory resolution, the Company’s named executive officer compensation for the year ended December 31, 2025, as reported in the Company’s Proxy Statement. For 3. 2025 U.K. Directors’ Remuneration Report: To approve, as a non-binding advisory resolution, the Company’s directors’ remuneration report for the year ended December 31, 2025, as reported in the Company’s U.K. Annual Report and Accounts. For 4. Receipt of U.K. Annual Report and Accounts: To receive the Company’s audited U.K. accounts for the year ended December 31, 2025, including the reports of the directors and the auditor thereon. For 5. Ratification of PwC as U.S. Auditor: To ratify the appointment of PricewaterhouseCoopers LLP (“PwC”) as the Company’s U.S. independent registered public accounting firm for the year ending December 31, 2026. For 6. Reappointment of PwC as U.K. Statutory Auditor: To reappoint PwC as the Company’s U.K. statutory auditor under the U.K. Companies Act 2006, to hold office from the conclusion of the 2026 Annual General Meeting of Shareholders until the next annual general meeting of shareholders at which accounts are laid. For 7. Approval of U.K. Statutory Auditor Fees: To authorize the Board and/or the Audit Committee to determine the remuneration of PwC, in its capacity as the Company’s U.K. statutory auditor for the year ending December 31, 2026. For 8. Approval of Amendment No. 1 to the TechnipFMC plc 2022 Incentive Award Plan: To authorize an amendment to the TechnipFMC plc 2022 Incentive Award Plan. For 9. Authority to Allot Equity Securities: To authorize the Board to allot equity securities in the Company. For 10. As a special resolution - Authority to Allot Equity Securities without Pre-emptive Rights: Pursuant to the authority contemplated by the resolution in Proposal 9, to authorize the Board to allot equity securities without pre-emptive rights. For NOTE: Such other business as may properly come before the meeting or any adjournment thereof. Voting Items Board Recommends