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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Filed by a Party other than the Registrant  ☐

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☐ Preliminary Proxy Statement

☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a6(e)(2))

☐ Definitive Proxy Statement

☒ Definitive Additional Materials

☐ Soliciting Material under §240.14a-12

NOBLE CORPORATION

(Exact name of registrant as specified in its charter)

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

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☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a6(i)(1) and 0-11

Noble Corporation 13135 Dairy Ashford, Suite 800 Sugar Land, Texas 77478

PRESS RELEASE

NOBLE CORPORATION ANNOUNCES MAY 10, 2022 EXTRAORDINARY GENERAL MEETING TO APPROVE BUSINESS COMBINATION

SUGAR LAND, TEXAS, April 11, 2022—Noble Corporation (NYSE: NE, “Noble”, or the “Company”) today announced that the extraordinary general meeting of Noble shareholders (the “General Meeting”) relating to Noble’s previously announced proposed business combination (the “Business Combination”) with The Drilling Company of 1972 A/S (CSE: DRLCO) (“Maersk Drilling”) will be held on May 10, 2022 at 9:00 a.m., Central Time, at Noble Advances Training and Collaboration Center, 12550 Reed Rd., Ste. 200, Sugar Land, Texas 77478.

On April 11, 2022, the U.S. Securities and Exchange Commission (the “SEC”) declared effective the registration statement on Form S-4 (File No. 333-261780) of Noble Finco Limited (“Topco”) relating to the Business Combination, and Noble will mail the definitive proxy statement/prospectus for the General Meeting to shareholders as of April 8, 2022 (the “Record Date”). Shareholders are encouraged to vote in advance of the General Meeting and will have until May 9, 2022 at 11:59 p.m., Central time, to do so. Voting in advance is easy and can be done in one of three ways: online, via telephone or by mail.

All Noble shareholders as of the Record Date are encouraged to vote in favor of the Business Combination.

Contact Noble Corporation

For additional information, visit www.noblecorp.com or email investors@noblecorp.com

Craig Muirhead

Vice President of Investor Relations and Treasurer

cmuirhead@noblecorp.com

Aaron Campbell

Director of Investor Relations

acampbell@noblecorp.com

About Noble Corporation

Noble is a leading offshore drilling contractor for the oil and gas industry. Noble owns and operates one of the most modern, versatile, and technically advanced fleets in the offshore drilling industry. Noble and its predecessors have been engaged in the contract drilling of oil and gas wells since 1921. Currently, Noble performs, through its subsidiaries, contract drilling services with a fleet of 19 offshore drilling units, consisting of 11 drillships and 8 jackups, focused largely on ultra-deepwater and high specification jackup drilling opportunities in both established and emerging regions worldwide. Noble is an exempted company incorporated in the Cayman Islands with limited liability with registered office at P.O. BOX 309, Ugland House, S. Church Street, Grand Cayman, KY1-1104. Additional information on Noble is available at www.noblecorp.com.

About Maersk Drilling

With 50 years of experience operating in the most challenging offshore environments, Maersk Drilling (CSE:DRLCO) provides responsible drilling services to energy companies worldwide. Headquartered in Denmark, Maersk Drilling owns and operates a fleet of offshore drilling rigs and specialises in harsh environment and deepwater operations. For more information about Maersk Drilling, visit www.maerskdrilling.com.

Forward-looking Disclosure Statement

This press release includes forward-looking statements within the meaning of the federal securities laws with respect to the proposed transaction, including statements regarding the benefits of the transaction, the anticipated timing of the transaction, the products and services offered by Noble and Maersk Drilling and the markets in which they operate, and Noble’s and Maersk

Drilling’s projected future financial and operating results. These forward-looking statements are generally identified by terminology such as “believe,” “may,” “will,” “potentially,” “estimate,” “continue,” “anticipate,” “intend,” “could,” “would,” “should,” “project,” “target,” “plan,” “expect,” or the negatives of these terms or variations of them or similar terminology. The absence of these words, however, does not mean that the statements are not forward-looking. These forward-looking statements are based upon current expectations, beliefs, estimates and assumptions that, while considered reasonable as and when made by Noble and its management, and Maersk Drilling and its management, as the case may be. Such forward-looking statements are subject to risks, uncertainties, and other factors that could cause actual results to differ materially from those expressed or implied by such forward-looking statements. New risks and uncertainties may emerge from time to time, and it is not possible to predict all risks and uncertainties.

Many factors could cause actual future events to differ materially from the forward-looking statements in this press release, including but not limited to: (i) the risk that the transaction may not be completed in a timely manner or at all, which may adversely affect the price of Noble’s and Maersk Drilling’s securities, (ii) the failure to satisfy the conditions to the consummation of the transaction, including the adoption of the business combination agreement by the shareholders of Noble, the acceptance of the proposed exchange offer by the requisite number of Maersk Drilling shareholders and the receipt of certain governmental and regulatory approvals, (iii) the occurrence of any event, change or other circumstance that could give rise to the termination of the business combination agreement, (iv) the effects of public health threats, pandemics and epidemics, such as the ongoing outbreak of COVID-19, and the adverse impact thereof on Noble’s or Maersk Drilling’s business, financial condition and results of operations, (v) the effect of the announcement or pendency of the transaction on Noble’s or Maersk Drilling’s business relationships, performance, and business generally, (vi) risks that the proposed transaction disrupt current plans of Noble or Maersk Drilling and potential difficulties in Noble’s or Maersk Drilling’s employee retention as a result of the proposed transaction, (vii) the outcome of any legal proceedings that may be instituted against Noble or Maersk Drilling related to the business combination agreement or the proposed transaction, (viii) the ability of Noble Finco Limited (“Topco”) to list the Topco shares on NYSE or the Nasdaq Copenhagen, (ix) volatility in the price of the combined company’s securities due to a variety of factors, including changes in the competitive markets in which Topco plans to operate, variations in performance across

competitors, changes in laws and regulations affecting Topco’s business and changes in the combined capital structure, (x) the effects of actions by, or disputes among OPEC+ members with respect to production levels or other matters related to the price of oil, market conditions, factors affecting the level of activity in the oil and gas industry, and supply and demand of jackup rigs, (xi) factors affecting the duration of contracts, the actual amount of downtime, (xii) factors that reduce applicable dayrates, operating hazards and delays, (xiii) risks associated with operations outside the US, actions by regulatory authorities, credit rating agencies, customers, joint venture partners, contractors, lenders and other third parties, legislation and regulations affecting drilling operations, compliance with regulatory requirements, violations of anti-corruption laws, shipyard risk and timing, delays in mobilization of jackup rigs, hurricanes and other weather conditions, and the future price of oil and gas, and (xiv) the ability to implement business plans, forecasts, and other expectations (including with respect to synergies and financial and operational metrics, such as EBITDA and free cash flow) after the completion of the proposed transaction, and to identify and realize additional opportunities, (xv) the failure to realize anticipated benefits of the proposed transaction, (xvi) risks related to the ability to correctly estimate operating expenses and expenses associated with the transaction, (xvii) risks related to the ability to project future cash utilization and reserves needed for contingent future liabilities and business operations, (xviii) the potential impact of announcement or consummation of the proposed transaction on relationships with third parties, (xix) changes in law or regulations affecting Noble, Maersk Drilling or the combined company, (xx) international, national or local economic, social or political conditions that could adversely affect the companies and their business, (xxi) conditions in the credit markets that may negatively affect the companies and their business, and (xxii) risks associated with assumptions that parties make in connection with the parties’ critical accounting estimates and other judgements. The foregoing list of factors is not exhaustive. There can be no assurance that the future developments affecting Noble, Maersk Drilling or any successor entity of the transaction will be those that we have anticipated.

These forward-looking statements involve a number of risks, uncertainties (some of which are beyond Noble’s or Maersk Drilling’s control) or other assumptions that may cause actual results or performance to be materially different from those expressed or implied by these forward-looking statements or from our historical experience and our present expectations or projects. You should carefully consider the foregoing factors and the other risks and uncertainties that affect the parties’ businesses, including those described in Noble’s Annual Report on Form 10-K, Quarterly

Reports on Form 10-Q, Current Reports on Form 8-K and other documents filed from time to time by Noble and Topco with the SEC and those described in Maersk Drilling’s annual reports, relevant reports and other documents published from time to time by Maersk Drilling. Noble and Maersk Drilling wish to caution you not to place undue reliance on any forward-looking statements, which speak only as of the date hereof. Except as required by law, Noble and Maersk Drilling are not undertaking any obligation to update or revise any forward-looking statements whether as a result of new information, future events or otherwise.

Additional Information and Where to Find It

In connection with the proposed business combination, Topco has filed a Registration Statement on Form S-4 (which Registration Statement was declared effective on April 11, 2022) with the SEC that includes (1) a proxy statement of Noble that also constitutes a prospectus for Topco and (2) an offering prospectus of Topco to be used in connection with Topco’s offer to exchange shares in Maersk Drilling for Topco shares. Noble will mail the proxy statement/prospectus to its shareholders in connection with the vote to approve the merger of Noble and a wholly-owned subsidiary of Topco, and Topco will distribute the offering prospectus in connection with the exchange offer. Should Maersk Drilling and Noble proceed with the proposed transaction, Maersk Drilling and Noble also expect that Topco will file an offer document with the Danish Financial Supervisory Authority (Finanstilsynet). This communication does not contain all the information that should be considered concerning the proposed transaction and is not intended to form the basis of any investment decision or any other decision in respect of the proposed business combination. INVESTORS AND STOCKHOLDERS ARE URGED TO CAREFULLY READ THE PROXY STATEMENT/PROSPECTUS AND THE OFFERING DOCUMENT RELATING TO THE PROPOSED BUSINESS COMBINATION IN THEIR ENTIRETY, IF AND WHEN THEY BECOME AVAILABLE, AND ANY OTHER DOCUMENTS FILED BY EACH OF TOPCO AND NOBLE WITH THE SEC IN CONNECTION WITH THE BUSINESS COMBINATION OR INCORPORATED BY REFERENCE THEREIN BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT TOPCO, MAERSK DRILLING AND NOBLE, THE PROPOSED BUSINESS COMBINATION AND RELATED MATTERS.

Investors and shareholders are able to obtain free copies of the proxy statement/prospectus and all other documents filed with the SEC by Topco and Noble through the website maintained by the SEC at www.sec.gov. In addition, investors and stockholders are able to obtain free copies of the proxy statement/prospectus and other documents related thereto on Maersk Drilling’s website at www.maerskdrilling.com or Noble’s website at www.noblecorp.com, or by written request to Noble at Noble Corporation, Attn: Richard B. Barker, 13135 Dairy Ashford, Suite 800, Sugar Land, Texas 77478.

Participants in the Solicitation

Maersk Drilling, Noble and their respective directors, executive officers and certain employees may be deemed to be participants in the solicitation of proxies from the shareholders of Maersk Drilling and Noble, respectively, in connection with the proposed transaction. Shareholders may obtain information regarding the names, affiliations and interests of Noble’s directors and officers in Noble’s Annual Report on Form 10-K for the fiscal year ended December 31, 2021, which was filed with the SEC on February 17, 2022, and Items 10 through 14 of Part III of Amendment No. 1 thereto on Form 10-K/A, which was filed with the SEC on March 11, 2022. To the extent the holdings of Noble’s securities by Noble’s directors and executive officers have changed since the amounts set forth in such annual report, such changes have been or will be reflected on Statements of Change in Ownership on Form 4 filed with the SEC. Information regarding the names, affiliations and interests of Maersk Drilling’s directors and officers is contained in Maersk Drilling’s Annual Report for the fiscal year ended December 31, 2021, and can be obtained free of charge from the sources indicated above. Additional information regarding the interests of such individuals in the proposed business combination will be included in the proxy statement/prospectus relating to the proposed transaction when it is filed with the SEC. You may obtain free copies of these documents from the sources indicated above.

No Offer or Solicitation

This press release is not intended to and does not constitute an offer to sell or the solicitation of an offer to subscribe for or buy or an invitation to purchase or subscribe for any securities or the solicitation of any vote in any jurisdiction pursuant to the proposed transaction or otherwise, nor shall there be any sale, issuance or transfer of securities in any jurisdiction, in each case, in contravention of applicable law. No offer of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act and

applicable European or the UK, as appropriate, regulations. Subject to certain exceptions to be approved by the relevant regulators or certain facts to be ascertained, the public offer will not be made directly or indirectly, in or into any jurisdiction where to do so would constitute a violation of the laws of such jurisdiction, or by use of the mails or by any means or instrumentality (including, without limitation, facsimile transmission, telephone and the internet) of interstate or foreign commerce, or any facility of a national securities exchange, of any such jurisdiction.

Important Notice

This announcement is not a public takeover offer and this announcement does not represent a formal decision by Topco or Noble to make a public takeover offer within the meaning of section 4(1) of the Danish Takeover Order (Executive Order no. 636 dated 15 May 2020), and such formal decision by Topco to make a public takeover offer in accordance with section 4(1) of the Danish Takeover Order is conditional on the approval of a prospectus approved in accordance with Regulation (EU) No. 2017/1129 of 14 June 2017 (the “Prospectus Regulation”) or a document that satisfies the exemptions in article 1, paragraph 4, subparagraph m and paragraph 5, subparagraph e of the Prospectus Regulation, by the Danish Financial Supervisory Authority. If and when Topco formally launches the exchange offer, it will be made in the form of an offer document to be approved by the Danish Financial Supervisory Authority in accordance with the Danish Capital Market Act (Consolidated Act no. 1767 of 27 November 2020 on Capital Markets, as amended) and the Danish Takeover Order.