TechnipFMC plc

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. )

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TECHNIPFMC PLC

(Name of Registrant as Specified In Its Charter)

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Notice of 2026 Annual General Meeting of Shareholders

TechnipFMC plc, a public limited company having its registered office at Hadrian House, Wincomblee Road, Newcastle upon Tyne, NE6 3PL, United Kingdom, and incorporated in England and Wales with company number 0990970

These items are more fully described in the Proxy Statement attached, which forms a part of this Notice of Annual General Meeting of Shareholders. As of the date of the Proxy Statement, TechnipFMC does not know of any other matters to be raised at the 2026 Annual General Meeting of Shareholders.

Contents

Proxy Statement for the 2026 Annual General Meeting of Shareholders

This Proxy Statement relates to the solicitation of votes or proxies by the Board of Directors (the “Board”) of TechnipFMC plc (the “Company,” “TechnipFMC,” “our,” “us,” or “we”) for use at our 2026 Annual General Meeting of Shareholders and at any adjournment or postponement of such meeting (the “Annual Meeting”).

The Notice of Internet Availability of Proxy Materials (the “Notice of Materials”) and related Proxy Materials (as defined below) were first made available to shareholders on or about March 19, 2026, atwww.proxyvote.com. You may also request a printed copy of this Proxy Statement and the form of proxy by any of the following methods:

Our U.S. Annual Report on Form 10-K, including consolidated financial statements, for the year ended December 31, 2025 (our “Annual Report on Form 10-K”) and our U.K. Annual Report and Accounts are being made available at the same time and by the same methods.

Our registered office is located at Hadrian House, Wincomblee Road, Newcastle upon Tyne, NE6 3PL, United Kingdom. Our telephone number in our Newcastle office is +44 (0) 191 296 7000. Information regarding the Annual Meeting, including the information required by section 311A of the U.K. Companies Act 2006 (the “Companies Act”), can be found atwww.technipfmc.com. Information contained on our website is not to be considered as part of the proxy solicitation material and is not incorporated into this Proxy Statement.

TechnipFMC is a public limited company incorporated under the laws of England and Wales, and our ordinary shares (the “Ordinary Shares”) trade on the New York Stock Exchange in the United States (the “NYSE”) under the symbol “FTI.” As a result, the Company is governed by the Companies Act, U.S. securities laws and regulations, and the listing standards of the NYSE.

IMPORTANT NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS FOR THE 2026 ANNUAL GENERAL MEETING OF SHAREHOLDERS TO BE HELD ON MAY 1, 2026The Notice of Annual General Meeting of Shareholders and Proxy Statement, Annual Report on Form 10-K, and U.K. Annual Report and Accounts are available at www.proxyvote.com.

Forward-Looking Statements

The Proxy Materials (as defined below) contain “forward-looking statements” as defined in Section 27A of the United States Securities Act of 1933, as amended, and Section 21E of the United States Securities Exchange Act of 1934, as amended (the “Exchange Act”). All statements other than statements of historical or current facts, including statements regarding our environmental and sustainability plans and goals, made in this document are forward-looking. We use words such as “believe,” “expect,” “anticipate,” “plan,” “intend,” “commit,” “foresee,” “should,” “would,” “could,” “may,” “estimate,” “outlook,” “target,” and similar expressions, including the negative thereof. The absence of these words, however, does not mean that the statements are not forward-looking. All of our forward-looking statements involve risks and uncertainties (some of which are significant or beyond our control) and assumptions that could cause actual results to differ materially from our historical experience and our present expectations or projections. These forward-looking statements are based on our current expectations, beliefs, and assumptions concerning future developments and business conditions and their potential effect on us. While management believes these forward-looking statements are reasonable as and when made, there can be no assurance that future developments affecting us will be those that we anticipate. Known material factors that could cause actual results to differ materially from those contemplated in the forward-looking statements include unpredictable trends in the demand for and price of oil and natural gas; competition and unanticipated changes relating to competitive factors in our industry, including ongoing industry consolidation; our inability to develop, implement, and protect new technologies and services and intellectual property related thereto; the cumulative loss of major contracts, customers, alliances, or business disruptions; disruptions in the political, regulatory, economic, and social conditions, or public health crisis in the countries where we conduct business; the impact of our existing and future indebtedness; a downgrade in our debt rating; the risks caused by our acquisition and divestiture activities; additional costs or risks from increasing scrutiny and expectations regarding sustainability matters; uncertainties related to our investments, including those related to energy transition; the risks caused by fixed-price contracts; our failure to timely deliver our backlog; our reliance on subcontractors, suppliers, and our joint venture partners; challenges with managing artificial intelligence, machine learning, data science, and similar technologies; a failure or breach of our IT infrastructure or that of our subcontractors, suppliers, or joint venture partners, including as a result of cyber-attacks; risks of pirates and maritime conflicts endangering our maritime employees and assets; any delays and cost overruns of capital asset construction projects for vessels and manufacturing facilities; potential liabilities inherent in the industries in which we operate or have operated; our failure to comply with existing and future laws and regulations, including those related to environmental protection, climate change, health and safety, labor and employment, import/export controls, currency exchange, bribery and corruption, taxation, privacy, data protection, data security, and artificial intelligence; uninsured claims and litigation against us; the additional restrictions on dividend payouts or share repurchases as an English public limited company; tax laws, treaties and regulations, and any unfavorable findings by relevant tax authorities; significant changes or developments in U.S. or other national trade policies, including tariffs and the reactions of other countries thereto; potential departure of our key managers and employees; adverse seasonal, weather, and other climatic conditions; unfavorable currency exchange rates; risk in connection with our defined benefit pension plan commitments; and our inability to obtain sufficient bonding capacity for certain contracts, as well as the risk factors discussed in our filings with the U.S. Securities and Exchange Commission (“SEC”), including our annual reports on Form 10-K and quarterly reports on Form 10-Q. In addition, sustainability-related statements—whether historical, current, or forward-looking are often based on evolving methodologies, data, and internal controls and processes. Like other companies, our approach to these matters continues to develop, and we cannot guarantee alignment with the expectations or preferences of any particular stakeholder. Forward-looking and other statements in the Proxy Materials may also address our corporate responsibility and sustainability progress, plans, and goals, and the inclusion of such statements is not an indication that these contents are necessarily material for the purposes of complying with or reporting pursuant to the U.S. federal securities laws and regulations, even if we use the word “material” or “materiality” in this document. Such corporate responsibility and sustainability matters are often informed by frameworks that use varying materiality standards that can differ from, and are often more expansive than, those applicable for purposes of our SEC filings. Additionally, any references to our website or other materials not included in our Proxy Materials are, absent express language to the contrary, not incorporated by reference into these documents. With respect to sustainability information that pertains to our third-party vendors, suppliers, and partners, we often rely on such

third parties’ data and do not independently verify or audit, or commit to independently verifying or auditing, their information. These factors, as well as any inaccuracies in third-party information we use, including in estimates or assumptions, may cause results to differ materially and adversely from statements, estimates, and beliefs made by us or third parties. We caution you not to place undue reliance on any forward-looking statements, which speak only as of the date hereof. We undertake no obligation to publicly update or revise any of our forward-looking statements after the date they are made, whether as a result of new information, future events, or otherwise, except to the extent required by law. Additionally, we note that standards and expectations regarding greenhouse gas (“GHG”) accounting and the processes for measuring and counting GHG emissions, GHG emission reductions, and other sustainability-related metrics are evolving, and it is possible that our approaches both to measuring our emissions and to reducing emissions and measuring those reductions may be, either currently by some stakeholders or at some point in the future, considered inconsistent with common or best practices with respect to measuring and accounting for such matters, and reducing overall emissions. Similarly, while we reference various frameworks, we cannot guarantee, and words such as “accord,” “alignment,” or similar should not be understood to mean, complete alignment with the requirements of such frameworks or any particular interpretations thereunder. Our disclosures based on any standards may change due to revisions in framework requirements, availability of information, changes in our business or applicable governmental policies, or other factors, some of which may be beyond our control.