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Once a year, publicly traded companies issue a comprehensive report of their business, called a 10-K. A component mandated in the 10-K is the ‘Risk Factors’ section, where companies disclose any major potential risks that they may face. This dashboard highlights all major changes and additions in new 10K reports, allowing investors to quickly identify new potential risks and opportunities.

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Item 1A. “Risk Factors” of this Annual Report and in our other filings with the Securities and Exchange Commission (“SEC”). We cannot control such risk factors and other uncertainties, and in many cases, we cannot predict the risks and uncertainties that could cause our actual results to differ materially from those indicated by the forward-looking statements. You should consider these risks and uncertainties when you are evaluating us. Future quarterly dividends and other shareholder returns will be subject to, amongst other things, approval by the Board of Directors and may be modified as market conditions dictate.

Risk Factors Summary

The following is a summary of the principal risks that could adversely affect our business, operating results, and financial condition.

Risks Related to Our Business and Operations

▪our business depends on the level of activity in the oil and gas industry;

▪the offshore contract drilling industry is a highly competitive and cyclical business;

▪an oversupply of offshore rigs;

▪our ability to renew or replace existing contracts;

▪contracting with national oil companies;

▪our current backlog of contract drilling revenue may not be ultimately realized;

▪our substantial dependence on several customers and geographic locations;

▪operating hazards inherent to the offshore drilling business;

▪risks associated with unionization efforts, labor interruptions, and labor regulations;

▪a major natural disaster, catastrophic event, acts of war, terrorism or social unrest, pandemic, or other similar event;

▪risks associated with participation in joint ventures and investments in associates;

▪risks relating to operations in international locations;

▪upgrades, refurbishment, operating, and maintenance costs of our rigs (including any associated tariffs) as well as related operational interruptions and delays in operations or access to funding;

▪inflation may adversely affect our operating results;

▪obtaining and maintaining insurance;

▪our and our service providers or other third parties’ failure to adequately protect sensitive information and operational technology systems and critical data;

▪our failure to attract and retain skilled personnel;

▪supplier capacity constraints or shortages in parts or equipment or price increases;

▪risks associated with future mergers, acquisitions, or dispositions of businesses or assets;

▪seasonal weather events and related windstorm damage or liabilities;

▪our failure to effectively and timely respond to the impact of long-term changes in the energy mix;

▪the potential for substandard performance or nonperformance by third-party suppliers and subcontractors upon which we rely;

▪risks associated with creating and executing new business models;

Regulatory and Legal Risks

▪the impact of governmental laws and regulations on our costs and drilling activity;

▪heightened attention to sustainability matters;

▪changes in, compliance with, or our failure to comply with certain laws and regulations;

▪violations of anti-bribery or anti-corruption laws;

▪compliance with complex laws and regulations governing international trade;

▪we are, or in the future could be, subject to litigation;

Financial, Tax, and Governance Risks

•we may record impairment charges on property and equipment;

•the 2023 Revolving Credit Agreement, the indentures for the 2030 Notes and the Diamond Second Lien Notes (each as defined herein), and future facilities may contain various restrictive covenants limiting the discretion of our management in accessing liquidity or operating our business;

•the impact of a loss of a major tax dispute or a successful tax challenge to our operating structure, intercompany pricing policies, or the taxable presence of our subsidiaries in certain countries on our tax rate on our worldwide earnings;

•variance in our effective income tax rate;

•fluctuations in exchange rates;

•the interest of certain majority shareholders;

•the uncertainty of future dividends or future share repurchases;

•our structure as a holding company that is dependent upon cash flows from subsidiaries, joint ventures, and associates; and

•dilutive effects on shareholders, or impairment to our ability to raise capital for operations, from future equity sales and warrant exercises.

For a more complete discussion of the material risks facing our business, see Part I, Item 1A, “Risk Factors” below.

PART I

Item 1. Business.

Overview

Noble Corporation plc, a public limited company incorporated under the laws of England and Wales (“Noble”), is a leading offshore drilling contractor for the oil and gas industry. We provide contract drilling services to the international oil and gas industry with our global fleet of mobile offshore drilling units. We deliver our services through a high-specification fleet of floating and jackup rigs and the deployment of our drilling rigs in oil and gas basins around the world. Noble and its predecessors have been engaged in the contract drilling of oil and gas wells since 1921. As of December 31, 2025, our fleet of 36 drilling rigs consisted of 25 floaters and 11 jackups.

On June 9, 2024, Noble entered into an agreement and plan of merger (the “Diamond Merger Agreement”) with Diamond Offshore Drilling, Inc. (“Diamond”), Dolphin Merger Sub 1, Inc., and Dolphin Merger Sub 2, Inc., under which Noble would acquire Diamond in a stock plus cash transaction (the “Diamond Transaction”). On September 4, 2024 (the “Diamond Closing Date”), Noble completed its acquisition of Diamond.

For additional information, see “Note 2 — Acquisitions and Divestitures” to our consolidated financial statements included in Part II, Item 8 of this Annual Report on Form 10-K.

References in this Annual Report on Form 10-K to “Noble,” the “Company,” “we,” “us,” and “our” refer collectively to Noble and its consolidated subsidiaries on and after the Diamond Closing Date, as applicable.

Contract Drilling Services

We report our contract drilling operations as a single reportable segment, Contract Drilling Services, which reflects how we manage our business. The mobile offshore drilling units comprising our offshore rig fleet operate in a global market for contract drilling services and are often redeployed to different regions due to changing demands of our customers, which consist primarily of large, integrated, independent, and government-owned or controlled oil and gas companies throughout the world.

We typically provide contract drilling services under an individual contract on a dayrate basis. Each contract’s final terms and conditions are the result of negotiations with our customers or other counterparties, and many contracts are awarded through a competitive bidding process. The following terms generally describe the key aspects of our contracts:

•contract duration extending over a specific period of time or a period necessary to drill a defined number of wells;

•payment of compensation to us (generally in US dollars, although some customers or other counterparties, typically national oil companies, require a part of the compensation to be paid in local currency) on a “daywork” basis, so that we receive a fixed amount (unless the contract contains a performance-based component) for each day (“dayrate”) that the drilling unit is operating under contract (a lower rate or no compensation is payable during periods of equipment breakdown and repair, adverse weather, or in the event operations are interrupted by other conditions, some of which may be beyond our control);

•provisions permitting early termination of the contract by the customer or other counterparties (i) if the unit is lost or destroyed, (ii) if operations are suspended for a specified period of time due to breakdown of equipment or breach of contract, or (iii) for convenience with the payment of contractually specified termination amounts;

•provisions allowing the impacted party to terminate the contract if specified “force majeure” events beyond the contracting parties’ control occur for a defined period of time;

•payment by us of the operating expenses of the drilling unit, including labor costs and the cost of incidental supplies;

•provisions that allow us to recover our mobilization and demobilization costs associated with moving a drilling unit from one regional location to another which, under certain market conditions, may not allow us to receive full reimbursement of such costs;

•provisions that allow us to recover certain cost increases from our customers in certain long-term contracts;

•provisions that require us to lower dayrates for documented cost decreases in certain long-term contracts; and

•provisions that allocate responsibility and liability through indemnification provisions for risks related to personal injury, property damage or loss, environmental damages, damage to the reservoir, and other matters.

In addition, our customers or other counterparties may indemnify us in certain instances for damage to our down-hole equipment and, in some cases, our subsea equipment. Also, we generally obtain a mutual waiver of consequential losses in our drilling contracts.

Our customers typically assume responsibility for and indemnify us from loss or liability resulting from pollution or contamination, including third-party damages and clean-up and removal, arising from operations under the contract and originating below the surface of the water. We are generally responsible for pollution originating above the surface of the water and emanating from our drilling units. Additionally, our customers typically indemnify us for liabilities incurred as a result of a blow-out or cratering of the well and underground reservoir loss or damage. In the current market, we are under increasing pressure to accept exceptions to the above-described allocations of risk and, as a result, take on more risk. In such cases where we agree, we generally limit the exposure with a monetary cap and other restrictions.

The renegotiation may include changes to key contract terms, such as pricing, termination, and risk allocation.

For a discussion of our backlog of commitments for contract drilling services, please read Part II, Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations— Contract Drilling Services Backlog.”

Drilling Fleet

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 of mobile offshore drilling units in the offshore drilling industry. Noble provides, through its subsidiaries, contract drilling services with a fleet of 31 offshore drilling units, consisting of 25 floaters and 6 jackups at the date of this report, focused largely on ultra-deepwater and ultra-harsh environment drilling opportunities in both established and emerging regions worldwide. Each type of drilling rig is described further below. Several factors determine the type of unit most suitable for a particular job, the most significant of which include the water depth and the environment of the intended drilling location, whether the drilling is being done over a platform or other structure, and the intended well depth. At December 31, 2025, our fleet was operating in Africa, Far East Asia, the North Sea, Oceania, South America, and the United States Gulf of America (the “US Gulf”). Our fleet consists of the following types of mobile offshore drilling units:

Floaters. A drillship is a type of floating drilling unit that is based on the ship-based hull of the vessel and equipped with modern drilling equipment that gives it the capability of easily transitioning from various worldwide locations and carrying high capacities of equipment while being able to drill ultra-deepwater oil and gas wells in up to 12,000 feet of water. Drillships can stay directly over the drilling location without anchors in open seas using a dynamic positioning system (“DPS”), which coordinates position references from satellite signals and acoustic seabed transponders with the drillship's six to eight thrusters to keep the ship directly over the well that is being drilled. Drillships are selected to drill oil and gas wells for programs that require a high level of simultaneous operations, where drilling loads are expected to be high, or where there are occurrences of high ocean currents, where the drillship's hull shape is the most efficient. Noble's fleet consists of 17 drillships capable of water depths from 10,000 feet to 12,000 feet.

Semisubmersible drilling units are designed as a floating drilling platform incorporating one or several pontoon hulls, which are submerged in the water to lower the center of gravity and make this type of drilling unit exceptionally stable in the open sea. Semisubmersible drilling units are generally categorized in terms of the water depth in which they are capable of operating, from the mid-water range of 300 feet to 4,000 feet, the deepwater range of 4,000 feet to 7,500 feet, to the ultra-deepwater range of 7,500 feet to 12,000 feet as well as by their generation, or date of construction. This type of drilling unit typically exhibits excellent stability characteristics, providing a stable platform for drilling even in rough seas. Semisubmersible drilling units hold their position over the drilling location using either an anchored mooring system or a DPS and may be self-propelled. Noble’s fleet consists of 8 moored ultra-deepwater semisubmersible drilling units.

Jackups. Jackup drilling units are designed to provide drilling solutions in depths ranging from less than 100 feet to as deep as 500 feet of water with drilling hook loads up to 2,500,000 pounds. Jackup rigs can be used in open water exploration locations, as well as over fixed, bottom-supported platforms. A jackup drilling unit is a towed mobile vessel consisting of a floating hull equipped with three or four legs, which are lowered to the seabed at the drilling location. The hull is then

elevated out of the water by the jacking system using the legs to support the weight of the hull and drilling equipment against the seabed. Once the hull is elevated to the desired level, or “jacked up”, the drilling package can be extended out over an existing production platform or the open water location and drilling can commence. Noble’s fleet of 6 jackups consists of high-specification units capable of drilling in up to 500 feet of water.

The following table presents certain information concerning our offshore fleet at February 12, 2026. We own and operate all of the units included in the table. The table excludes certain rigs currently operating under a bareboat charter agreement.

(1) Rated water depth for drillships and semisubmersibles reflects the maximum water depth for which a floating rig has been designed for drilling operations.

(2) Rigs listed as “active” are operating, preparing to operate, or under contract; rigs listed as “available” are actively seeking contracts and may include those that are idle or warm stacked.

Market

The offshore contract drilling industry is a highly competitive and cyclical business. Demand for offshore drilling services is driven by the offshore exploration and development programs of oil and gas operators, which in turn are influenced by many factors. Those factors include, but are not limited to, the price and price stability of oil and gas, the relative cost and carbon footprint of offshore resources within each operator’s broader energy portfolio, global macroeconomic conditions, world energy demand, the operator’s strategy toward renewable energy sources, environmental considerations, and governmental policies.

In the provision of offshore contract drilling services, success in securing contracts is primarily governed by price, a rig’s availability, drilling capabilities and technical specifications, and the drilling contractor’s safety performance record. Other factors include experience of the workforce, process efficiency, condition of equipment, operating integrity, reputation, industry standing, and client relations.

We maintain a global operational presence and compete in many of the major offshore oil and gas basins worldwide with a primary focus on the deepwater and ultra-deepwater floater market and ultra-harsh environment jackup market. All our drilling rigs are mobile, and we may reposition our drilling rigs among regions for a variety of reasons, including in response to customer requirements. We compete in both the floating and ultra-harsh jackup rig markets, each of which may have different supply and demand dynamics at a given period in time or in different regions.

We have one of the youngest and highest specification fleets of global scale in the industry, with diversification across geographic regions and customers. The Company has a track record of industry-leading utilization, coupled with a commitment to best-in-class safety performance and customer satisfaction. We strive to be a leader in industry innovation and first-mover in sustainability.

The offshore drilling industry has historically experienced significant volatility and change. In recent years, however, oil prices have generally remained at levels that are supportive of offshore exploration and development activity and global rig demand recovered to eclipse pre-pandemic levels, albeit with a steady downtrend since 2022 post-pandemic highs. Spot prices for Brent crude have recently settled in the mid to high $60s per barrel during early 2026 compared to an average price of $68 per barrel during 2025. Current demand and utilization levels are supported by the combination of the outlook for longer-term commodity prices, heightened focus on energy security, the capital intensity of depletion replacement, and relative attractiveness of offshore plays with respect to both cost and carbon emissions. The increase in global rig demand since 2021 has had a positive impact on dayrates for most rig classes, although dayrates have decreased moderately since recent highs during 2023 and 2024.

The global rig supply has come down from historic highs as Noble and other offshore drilling contractors have retired less capable and idle assets. Concurrently, the incoming supply of newbuild offshore drilling rigs has diminished materially, with very few newbuild rigs now remaining stranded in shipyards.

Although the market outlook in our business varies by geographical region and water depth and, despite recent downward pressure on the price of oil, we remain encouraged by the long-term outlook in the ultra-deepwater floater market. Our customers continue to focus on our highest specification floaters, which represents the majority of our floater fleet. Assuming current market fundamentals, continued customer prioritization towards these highest specification floaters could result in lower utilization for our lower specification drillships and our semi-submersibles. Demand for midwater semisubmersibles is primarily driven by brownfield activity in mature basins, especially in Northwest Europe, South America, and the Asia Pacific regions, where a generally stable level of baseload demand is supported by infield drilling and plug and abandonment requirements. Our ultra-harsh environment jackups operating in Norway and the UK experienced less cyclical improvement than the floater fleet during 2022-2024, but have recently begun to realize improving utilization.

While we remain encouraged about overall long-term rig demand, as evidenced by recent multi-year, multi-rig contracts that we have booked into backlog, the near-term outlook for both floaters and jackups over the next several quarters continues to present lingering utilization headwinds compared to 2023-2024 levels. Furthermore, economic uncertainty and lower commodity prices arising from recent trade policy and tariffs, compounded with OPEC’s stated intent to increase oil production, collectively present a potential for additional demand risk for offshore rigs in the near term.

Across the broader offshore drilling market, recent contract awards and open tenders show an increasing proportion of multi-year contracts, although a significant number of shorter-term commitments continue to be fixed as well. Longer-term contracts can generally provide economic efficiencies by reducing the number of rig contract start-ups, both with different customers and among different regions, which is expected to reduce incremental resources and costs. On the other hand, certain multi-year contracts that are scheduled to commence a year or more into the future can present near-term utilization inefficiency due to challenges with filling interim availability on the assets.

The energy transition from hydrocarbons to renewables poses a challenge to the oil and gas sector and our market. Energy rebalancing trends sharply accelerated over the past decade as evidenced by promulgated or proposed government policies and commitments by many of our customers to further invest in sustainable energy sources, although this trend has moderated or even reversed in certain jurisdictions in more recent years with shifting political priorities. Our industry could be further challenged as resource holders and policy makers continue to evaluate and calibrate strategies and capital flows to address global energy needs. Ultimately, however, there continues to be a global dependence on products made from hydrocarbons and on the combustion of hydrocarbons to provide reliable and affordable energy. Low-cost and low-emission barrels are expected to be the most attractive conventional source to meet energy needs both currently and in the future. Global energy demand is predicted to increase over the coming decades, and we expect that offshore oil and gas will continue to play an important and lasting role in meeting this demand.

Significant Customers

During the three years ended December 31, 2025, we principally conducted our contract drilling operations in Africa, Far East Asia, the North Sea, Oceania, South America, and the US Gulf. The following table sets forth revenues from our customers as a percentage of our consolidated operating revenues:

(1) Amount was less than 10% for the year presented.

No other customer accounted for more than 10% of our consolidated operating revenues in 2025, 2024, or 2023.

Human Capital

At December 31, 2025, we had approximately 4,500 employees, excluding approximately 1,400 persons we engaged through labor contractors or agencies. Approximately 77% percent of our workforce is located offshore.

For additional information, please read Part I, Item 1A, “Risk Factors—Risks Related to Our Business and Operations—Unionization efforts, labor interruptions, and labor regulations could have a material adverse effect on our operations.”

Safety and Environmental Stewardship. Noble is committed to operating with excellent health, safety, and environmental (“HSE”) performance as an integral part of our business strategy, adding value for employees, customers, and shareholders. All personnel, regardless of job or position onboard our vessels or at any Noble facility, has the authorization and obligation to immediately stop any unsafe act, practice, or job that poses an unaddressed or unreasonable risk to people or the environment.

Our pursuit of exceptional HSE performance begins with our strong corporate culture that prioritizes proactive risk management, compliance with standards, and continuous improvement. This commitment is reinforced through Noble Peak, our safety philosophy focused on building capacity for safe work, learning from everyday operations, and fostering resilience. Noble Peak emphasizes mindset, skillset, and toolset—empowering teams to adapt, communicate, and learn continually—because safety is not just the absence of incidents, but the presence of defenses and capabilities.

To strengthen how we think about risk, Noble is moving beyond traditional lagging indicators such as IADC TRIR and LTIR. These legacy metrics often focus on frequency rather than severity, which can obscure the true risk profile of our

operations. Our Potential Consequence Severity Index (“PCSI”) addresses this gap by weighting events based on both actual and potential consequences. This approach helps ensure that serious hazards and high-risk exposures receive the attention they deserve—even when no injury occurs. PCSI is intended to drive proactive learning and prioritization, helping us focus on eliminating life-altering risks and building resilience rather than simply counting incidents.

Training and Continuing Education. We place considerable value on the training and development of our employees. Accordingly, we conduct formal and informal meetings with employees, regular executive-led podcasts, issue periodic publications of Company activities and other matters of interest to the Company’s OneNoble app, and offer a variety of training, including in-house through NobleAdvances, our state-of-the-art training facility in Texas. Noble has learned that technical skills are not enough to keep pace in our fast-changing offshore environments. NobleAdvances allows us to deliver scenario-based drilling and marine training with a strong focus on communication, biases, and emergency decision making. This approach is designed to enable Noble employees to execute our procedures effectively and solve complex technical problems in challenging offshore conditions.

Government Regulation

Our operations are subject to federal, state, and local laws and regulations in the U.S. and other jurisdictions where we operate, including those relating to drilling services, exploration, development, and production, and other activities in the oil and gas industry, international maritime standards, worker health and safety, taxation, import and export, corruption, sanctions, trade, labor and employment, data privacy and security, and environmental protection. Compliance with these laws has in the past and may continue to require significant expenditures and operating costs.

In particular, environmental laws and regulations regarding emissions (including greenhouse gases and methane), water discharges, wastewater and stormwater management, chemical handling and storage, hazardous and non-hazardous waste generation and disposal, endangered species and habitat protection, noise and dust, site remediation, and spill prevention and response require ongoing attention and resources to support compliance. Changes in standards or enforcement priorities can increase our cost of doing business and affect utilization and margins. Similarly, environmental non‑compliance incidents could expose us to investigations, administrative orders, civil or criminal penalties, natural resource damages, remediation and restoration obligations, and third‑party claims for property damage, personal injury, or business interruption, as well as strict, joint, and several liability, which can result in liability without regard to fault.

In addition, obtaining and maintaining environmental permits can be time‑consuming and costly, and permitting or regulatory challenges can delay, restrict, or halt our operations or those of our customers.

There is also ongoing attention concerning the global climate. Various regulators have proposed or adopted rules requiring the monitoring and reporting of GHG emissions from specified sources in the United States and abroad, including, among other things, certain offshore activities relating to oil and gas production. Emerging climate-related policies and market expectations, including greenhouse gas reporting and reduction programs, carbon pricing mechanisms, restrictions on flaring and venting, electrification requirements, and supply chain emissions goals set by our customers, could increase our costs, require additional disclosures and internal controls, or necessitate investments in lower‑emissions technologies and alternative power solutions for our rigs and facilities. Collectively, these factors could adversely affect our revenues, profitability, and returns on invested capital. More information on these and related risks can be found in our discussion in Part I, Item 1A, “Risk Factors” below.

Available Information

Our Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act are available free of charge at our website as soon as reasonably practicable after such material is electronically filed with or furnished with the SEC. The SEC maintains an internet site that contains reports, proxy and information statements, and other information regarding issuers that file electronically with the SEC at http://www.sec.gov.

Our website address is http://www.noblecorp.com. Investors should also note that we announce material financial information in SEC filings, press releases, and public conference calls. Based on guidance from the SEC, we may use the investor relations section of our website to communicate with our investors. It is possible that the financial and other information (including fleet status reports) posted there could be deemed to be material information. Noble may also use social media channels including, but not limited to, Noble's accounts on LinkedIn, Facebook, Instagram, and X, to communicate with investors and the public about its business, services, and other matters, and those communications

could be deemed to be material information. Documents and information on our website or our social media channels are not incorporated by reference herein.

Item 1A. Risk Factors.

Each of these risk factors could affect our business, operating results, and financial condition as well as affect an investment in our shares. The disclosures in this section reflect our beliefs and opinions as to factors that could materially and adversely affect us in the future. References to past events are provided by way of example only and are not intended to be a complete listing or a representation as to whether or not such factors have occurred in the past.

Risks Related to Our Business and Operations

Our business depends on the level of activity in the oil and gas industry.

Demand for drilling services depends on a variety of economic and political factors and the level of activity in offshore oil and gas exploration, development, and production markets around the world. Crude oil prices remain volatile; for example, Brent crude reached a low of $9.12 in 2020 and a 5-year high of $133.18 in 2022.

Higher prices do not necessarily translate into increased drilling activity because our customers typically take into account a number of considerations when they decide to invest in offshore oil and gas resources, including expectations regarding future commodity prices and demand for hydrocarbons. While the price of oil and gas remains volatile, the level of activity in offshore oil and gas exploration and development can be extremely volatile and can be affected by numerous factors beyond our control, including:

▪worldwide production, current demand, and our customer’s views of future demand for oil and gas;

▪changes in the rate of economic growth in the global economy;

▪the cost of exploring for, developing, producing, and delivering oil and gas;

▪the ability of OPEC and OPEC+ to set and maintain production levels and pricing;

▪expectations regarding future energy prices;

▪increased supply of oil and gas resulting from onshore hydraulic fracturing activity and shale development;

▪the relative cost of offshore oil and gas exploration versus onshore oil and gas production;

▪potential acceleration in the investment, development, price, and availability of alternative fuels or energy sources;

▪allocation of capital to exploration and production operations within customers’ broader portfolios;

▪the level of production in non-OPEC+ countries;

▪inventory levels and the cost and availability of storage and transportation of oil, gas, and their related products;

▪worldwide financial instability or recessions;

▪regulatory restrictions or any moratorium on offshore drilling or the availability of offshore lease or concession areas;

▪the discovery rate of new oil and gas reserves either onshore or offshore;

▪the rate of decline of existing and new oil and gas reserves;

▪available pipeline and other oil and gas transportation capacity;

▪oil refining capacity;

▪the ability of oil and gas companies to raise capital;

▪limitations on liquidity and available credit;

▪advances in exploration, development, and production technology either onshore or offshore;

▪technical advances affecting energy consumption, including the displacement of hydrocarbons;

▪merger, acquisition, and divestiture activity among oil and gas industry participants;

▪the availability of, and access to, suitable locations from which hydrocarbons can be produced;

▪adverse weather and sea conditions, including hurricanes, typhoons, cyclones, winter storms, and rough seas;

▪the occurrence or threat of a major natural disaster, catastrophic event, epidemic, or pandemic diseases, as well as any governmental response to such occurrence or threat;

▪changes in and compliance with tax laws, regulations, and policies;

▪changes in and compliance with environmental laws, regulations, and other initiatives, including those involving alternative energy sources, the phase-out of fossil fuel consuming vehicles, and the risks of global climate change;

▪the political environment of oil-producing countries or regions, including uncertainty or instability resulting from civil disorder, geopolitical instability, border disputes, or an outbreak or escalation of armed hostilities or acts of war or terrorism, such as the conflict between Russia and Ukraine, Middle East conflicts, and Venezuela related conflicts, and their respective regional and global ramifications; and

▪the laws, regulations, and policies of governments regarding exploration and development of their oil and gas reserves or speculation regarding future laws or regulations.

However, increases in near-term commodity prices do not necessarily translate into increased offshore drilling activity because customers’ expectations of longer-term future commodity prices and expectations regarding future demand for hydrocarbons typically have a greater impact on demand for our rigs.

The offshore contract drilling industry is a highly competitive and cyclical business with intense price competition. If we are unable to compete successfully, our profitability may be materially reduced.

The offshore contract drilling industry is a highly competitive and cyclical business characterized by high capital and operating costs and evolving capability of newer rigs. Drilling contracts are traditionally awarded on a competitive bid basis. Price competition, rig availability, location, suitability, and technical specifications are the primary factors in determining which rig is qualified for a job, and additional factors such as experience of the workforce, operating efficiency, safety performance record, condition of equipment, operating integrity, reputation, industry standing, and customer relations are also often considered. Our future success and profitability will partly depend upon our ability to keep pace with our customers’ demands with respect to these factors.

We may face competitive pressure to develop, implement, or acquire certain new technologies at a substantial cost. We cannot be certain that we will be able to continue to develop and implement new technologies or services offered.

Periods of low demand or excess rig supply intensify the competition in the industry and have resulted in, and may continue to result in, many of our rigs earning substantially lower dayrates or being idle for long periods of time. In addition, our competitors may relocate rigs to geographic markets in which we operate, which could exacerbate any excess rig supply, or depress the current rationalization and correction of offshore rig supply, and result in lower dayrates and utilization in those regions.

In addition, our customers continue to seek more favorable terms with respect to allocation of risk under offshore drilling contracts. Our drilling contracts provide for varying levels of risk allocation and indemnification from our customers. Our

customers have historically assumed most of the responsibility for and indemnified us from loss, damage, or other liability resulting from pollution or environmental damage, including clean-up and removal and third-party damages arising from operations under the contract when the source of the pollution originates from the well or reservoir, including those resulting from blow-outs or loss of well control. However, we regularly are required to assume certain amounts of liability for pollution and environmental damage caused by our negligence, which liability generally has higher caps, or may even have unlimited liability, where the damage is caused by our gross negligence or willful misconduct. We still face resistance with some customers when attempting to allocate less risk to us and lower caps for damage caused by our gross negligence or willful misconduct or reduce our exposure with respect pollution or environmental damage. Our contracts may also be subject to judicial review and application of public policy principles whereby relevant authorities could decide that certain contractual indemnities in current or future contracts are not enforceable. Going forward, we could decide or be required to retain more risk in the future, resulting in higher risk of losses, which could be material. Moreover, we may not be able to maintain adequate insurance in the future at rates that we consider reasonable or be able to obtain insurance against current or future risks.

We have not been, and may continue not to be, able to renew or replace certain expiring contracts, and our customers have sought, and may seek in the future, to terminate, renegotiate, or repudiate our drilling contracts and have had, and may have in the future, financial difficulties that prevent them from meeting their obligations under our drilling contracts.

Our customers may generally terminate our drilling contracts if a drilling rig is destroyed or lost or if we have to suspend drilling operations for a specified period of time as a result of a breakdown of equipment or, in some cases, due to other events beyond the control of either party. In the case of nonperformance and under certain other conditions, our drilling contracts generally allow our customers to terminate without any payment to us. The terms of some of our drilling contracts permit the customer to terminate the contract after a specified notice period by tendering contractually specified termination amounts or, in some cases, without any payment. These termination payments, if any, may not fully compensate us for the loss of a contract. The early termination of a contract may result in a rig being idle for an extended period of time and a reduction in our contract backlog and associated revenue, which could have a material adverse effect on our business, financial condition, and results of operations.

During periods of depressed market conditions, we are subject to an increased risk of our customers seeking to renegotiate or repudiate their contracts. The ability of our customers to perform their obligations under drilling contracts with us may also be adversely affected by the financial condition of the customer, restricted credit markets, economic downturns, and industry downturns. We may elect to renegotiate the rates we receive under our drilling contracts downward if we determine that to be a reasonable business solution. If our customers cancel or are unable to perform their obligations under their drilling contracts, including their payment obligations, and we are unable to secure new contracts on a timely basis on substantially similar terms or if we elect to renegotiate our drilling contracts and accept terms that are less favorable to us, it could have a material adverse effect on our business, financial condition, and results of operations.

Drilling contracts with national oil companies may expose us to greater risks than we normally assume in drilling contracts with non-governmental customers.

In addition, our ability to resolve disputes or enforce contractual provisions may be negatively impacted under these contracts. We can provide no assurance that the increased risk exposure will not have an adverse

impact on our future operations or that we will not increase the number of rigs contracted to national oil companies with additional contractual risks.

Our current backlog of contract drilling revenue may not be ultimately realized.

Generally, contract backlog only includes future revenues under signed drilling contracts. The terms of some of our drilling contracts permit the customer to terminate the contract after specified notice periods by tendering contractually specified termination amounts or, in certain cases, without any payment. In estimating backlog, we make certain assumptions about applicable dayrates under our longer-term contracts which have dayrate adjustment mechanisms (like certain of our contracts with ExxonMobil, AkerBP, and Petrobras) or performance-based components (like certain of our contracts with Shell plc and TotalEnergies). In addition, from time to time, we may report anticipated commitments under letters of intent or awards for which definitive agreements have not yet been, but are expected to be, signed. We cannot assure you that actual results will mirror these assumptions.

A substantial portion of our business is dependent on several of our customers as well as dependent on several geographic areas and the disruption of business with any of these customers or disruption of business within these geographic areas could have a material adverse effect on our financial condition and results of operations.

Any concentration of customers increases the risks associated with any possible termination or nonperformance of drilling contracts, failure to renew contracts or award new contracts, or reduction of their drilling programs. As of December 31, 2025, ExxonMobil, Shell plc, BP, and TotalEnergies represented approximately 23.7%, 19.5%, 16.2%, and 12.6% of our contract backlog, respectively, and operations within the US Gulf, Guyana, Suriname, and the North Sea accounted for approximately 35.3%, 23.7%, 12.9%, and 11.4% of our contract backlog, respectively. ExxonMobil, BP, and Petrobras accounted for approximately 19.7%, 13.2%, and 12.5% respectively, of our consolidated operating revenues for the year ended December 31, 2025, and operations in the US Gulf, Guyana, and the North Sea accounted for approximately 27.1%, 19.7%, and 16.9%, respectively, of our consolidated operating revenues for the year ended December 31, 2025. This concentration of customers increases the risks associated with any possible termination or nonperformance of contracts in addition to our exposure to credit risk. If any of these customers were to terminate or fail to perform their obligations under their contracts and we were not able to find other customers for the affected drilling units promptly, our financial condition and results of operations could be materially adversely affected. If we were forced to cease drilling operations in any of these regions for any reason and we were not able to redeploy to other regions promptly, our financial condition and results of operations could be materially adversely affected.

Our business may be impacted by numerous operating hazards.

Our operations are subject to many hazards inherent in the drilling business, including:

•loss of well control or blowout;

•fire;

•navigation hazards, such as collisions or groundings of offshore equipment;

•helicopter accidents;

•seabed punch-throughs of a jackup rig;

•mechanical or technological equipment failures;

•failure to comply with environmental, health, and safety requirements;

•loss of well integrity (such as pipe or cement failures and casing collapses);

•adverse weather or sea conditions (caused by events including hurricanes, typhoons, tsunamis, cyclones, and winter storms, which may increase in frequency and severity as a result of climate change);

•loop currents or eddies;

•toxic gas emanating from the well; and

•improper handling, release, or disposal of hazardous materials.

Operations also may be suspended because of machinery breakdowns, abnormal drilling conditions, and failure of subcontractors to perform or supply goods or services or personnel shortages. The occurrence of any of the hazards we face could have a material adverse effect on our business, financial condition, and results of operations.

Unionization efforts, labor interruptions, and labor regulations could have a material adverse effect on our operations.

Certain of our employees and contractors in international markets, such as Australia, certain African countries, Brazil, Norway, Denmark, and the United Kingdom, are represented by labor unions and work under collective bargaining or similar agreements, which are subject to periodic renegotiation, and efforts may be made from time to time to unionize other portions of our workforce. Although we have not experienced any labor disruptions, strikes, or other forms of labor unrest in connection with our personnel, there can be no assurance that labor disruptions by employees and contractors will not occur in the future. Further, unionized employees of third parties on whom we rely may be involved in labor disruptions, strikes, or other forms of labor unrest, causing operational disruptions. Such actions could result in the occurrence of additional costs, as well as limitations on our ability to operate or provide services to our customers, which may materially adversely affect our business, financial condition, and results of operations. If future labor strikes force us to shut down any of our operations, such interruption in operations could materially adversely affect our business, financial condition, and results of operations. Additionally, from time to time, legislation remains pending in the US Congress that could encourage additional unionization efforts in the United States, as well as increase the chances that such efforts succeed. Changes in the majority control of Congress may make passage on such legislation more likely. Additional unionization efforts, if successful, could materially increase our labor costs and operating restrictions.

A major natural disaster, catastrophic event, acts of war, terrorism, social unrest, pandemic, or other similar event could have a materially adverse effect on our business, financial condition, and results of operations, or have other adverse consequences.

Our business, financial condition, results of operations, access to capital markets, and borrowing costs may be adversely affected by a major natural disaster or catastrophic event, including civil unrest, geopolitical instability, war, terrorist attacks, pandemics, significantly altered weather conditions, or other (actual or threatened) public health emergencies such as the COVID-19 outbreak, or other events beyond our control, and measures taken in response thereto.

Acts of terrorism and social unrest, brought about by world political events or otherwise, such as the conflict between Russia and Ukraine, Middle East conflicts, and the Venezuela conflicts, and their respective regional and global ramifications, have caused instability in the world’s financial and insurance markets in the past and may occur in the future. Such acts could be directed against companies such as ours. In addition, acts of terrorism, piracy, and social unrest could lead to increased volatility in prices for crude oil and natural gas and could affect the markets for drilling services. Insurance premiums could increase and coverage may be unavailable in the future.

Our drilling contracts do not generally provide indemnification against loss of capital assets or loss of revenues resulting from acts of terrorism, piracy, or political or social unrest. We have limited insurance for our assets providing coverage for physical damage losses resulting from risks, such as terrorist acts, piracy, vandalism, sabotage, civil unrest, expropriation, and acts of war, and we do not carry insurance for loss of revenues resulting from such risks.

Public health emergencies have created and may in the future create, significant volatility and uncertainty and economic and financial market disruption. Governmental authorities implemented, and may implement in the future, numerous measures attempting to contain and mitigate the effects of pandemics and outbreaks, including travel bans and restrictions, quarantines, shelter in place orders, and shutdowns. Due to travel restrictions and mandatory quarantine

measures, we experienced, and may in the future experience again, increased difficulties, delays, and expenses in moving our personnel to and from our operating locations. We may be unable to pass these increased expenses to our customers.

Additionally, many scientists have concluded that increasing concentrations of GHGs in the Earth’s atmosphere and climate change may produce significant physical effects on weather conditions, such as increased frequency and severity of droughts, storms, floods, and other climatic events. If any such effects were to occur, they could adversely affect or delay demand for the oil or natural gas produced or cause us to incur significant costs in preparing for or responding to the effects of climatic events themselves. Potential adverse effects could include disruption of our and our customers’ operations, including, for example, damages to our facilities from winds or floods, increases in our costs of operation, or reductions in the efficiency of our operations, impacts on our personnel, supply chain, or distribution chain, as well as potentially increased costs for insurance coverages in the aftermath of such effects. Any of these events could have an adverse effect on our assets and operations.

We face risks associated with our participation in certain joint ventures as well as investments in associates.

We have made investments in certain joint ventures as well as investments in associates. Such investments are often entered into to satisfy local requirements, including local content requirements, in certain jurisdictions and the terms of the investment agreements vary depending on the counterparty and jurisdiction involved. For example, we currently have joint ventures with local owners or partners that were entered into in the ordinary course of business to satisfy local content requirements in certain African countries, countries in the Middle East, Mexico, and other applicable jurisdictions in which we operate. Investments in joint ventures or associates over which we have partial or joint control are subject to the risk that the other owners or partners in such joint venture or associate, who may have different business or investment strategies compared to ours or with whom we may have a disagreement or dispute, may have the ability to block business, financial, or management decisions (such as the decision to distribute dividends or appoint members of management) which may be crucial to the success of our investment in the joint venture or associate, or could otherwise implement initiatives which may be contrary to our interests. In addition, such joint venture owners or partners may be unable, or unwilling, to fulfill their obligations under the relevant agreements (for example, by not contributing working capital or other resources), or may experience financial, operational, or other difficulties that may adversely impact our investment in a particular joint venture or associate. In addition, such joint venture owners or associates may lack sufficient controls and procedures which could expose us to risk. If any of the foregoing were to occur, such occurrence could materially adversely affect our business, financial condition, and results of operations.

We operate in various regions throughout the world that may expose us to political or governmental risks and other uncertainties, including risks of:

•seizure, nationalization, or expropriation of property or equipment;

▪monetary policies, capital controls, government credit rating downgrades and potential defaults, and any potential shutdown of the United States government;

▪foreign currency fluctuations and devaluations;

▪limitations on the ability to repatriate income or capital;

▪complications associated with repairing and replacing equipment in remote locations;

▪repudiation, nullification, modification, or renegotiation of contracts;

▪limitations on insurance coverage, such as war risk coverage, in certain areas;

▪import-export quotas, wage and price controls, and imposition of sanctions, tariffs, or other trade restrictions;

▪operating delays as a result of excess governmental scrutiny or oversight;

▪compliance with and changes in taxation rules or policies;

▪compliance with and changes in regulatory or financial requirements, including local ownership, presence, local immigration, and visa requirements for personnel or labor requirements;

▪complexity involving conflicts of law between jurisdictions in which we operate;

▪other forms of government regulation and economic conditions that may effectively preclude us from engaging in business activities in certain countries (including newly amended regulations covering countries where we currently operate or where we may wish to operate in the future) are beyond our control and create operational uncertainty;

▪corruption, payment of bribes to government officials, money laundering, or kleptocracy (i.e., political corruption in which the government seeks personal gain and status at the expense of the governed); and

▪terrorism, piracy, civil, or international disturbances or conflict, such as the conflict between Russia and Ukraine, Middle East conflicts, and the Venezuela conflicts, and their respective regional and global ramifications.

Examples of challenges of operating in these countries include:

•ongoing changes in Brazilian laws related to the importation of rigs and equipment that may impose bonding, insurance, or duty-payment requirements;

•ongoing audits, including customs audits;

•procedural requirements for temporary import permits, which may be difficult to obtain; and

•the effect of certain temporary import permit regimes, where the duration of the permit does not coincide with the general term of the drilling contract.

Our ability to do business in a number of jurisdictions is subject to maintaining required licenses and permits and complying with applicable laws and regulations. For example, all of our drilling units are subject to regulatory requirements of the flag state, the country where a drilling unit is registered. The applicable flag state requirements are consistent with international maritime standards. In addition, each of our drilling units must be assessed by a classification society, which conducts surveys and reviews for physical and operational compliance with the rules of the classification society and the requirements of the flag state, signifying that such drilling rig has been constructed, maintained, crewed, and operated in accordance with the rules of the classification society and complies with applicable rules and regulations of the flag state (also referred to as being “in-class”). If any drilling unit is deemed or otherwise found to be “out of class”, it will no longer be permitted to operate, certain contractual obligations will be voided, canceled, or withdrawn (e.g., drilling contracts, insurance contracts, etc.), and the unit will be prohibited from entering the waters of most countries.

Jurisdictions where we operate may attempt to increase or impose requirements for our drilling units to operate in such jurisdiction, such as certain local ownership or content requirements or registration under the flag of that jurisdiction, or similar measures, resulting in our inability or loss of capacity to operate in a country imposing such requirements or measures.

In addition, some governments frequently intervene in their economy and occasionally make significant changes in policy and regulations. An example is the Brazilian government's actions to control inflation and other policies and regulations which have often involved, among other measures, changes in interest rates, changes in tax policies, changes in legislation, wage controls, price controls, currency devaluations, capital controls, and limits on imports of goods and services.

In addition, the offshore drilling industry is a global market requiring flexibility for rigs, depending on their technical capability, to relocate and operate in various environments and jurisdictions, moving from one area to another. The mobilization of rigs is expensive and time-consuming, and can be impacted by several factors including, but not limited to, governmental regulation and customs practices, availability of tugs and tow vessels, weather, currents, political instability,

civil unrest, and military actions, such as the conflict between Russia and Ukraine, Middle East conflicts, and the Venezuela conflicts, and their respective regional and global ramifications, and rigs may as a result become stranded. Some jurisdictions enforce strict technical requirements on the rigs requiring substantial physical modification to the rigs before they can be utilized. Such modifications may require significant capital expenditures and, as a result, may limit the use of the rigs in those jurisdictions in the future. In addition, mobilization carries the risk of damage to the rig. Failure to mobilize a rig in accordance with the deadlines set by a specific customer contract could result in a loss of compensation, liquidated damages, or the cancellation or termination of the contract. In some cases, we may not be paid for the time that a rig is out of service during mobilization. In addition, in the hope of securing future contracts, we may choose to mobilize a rig to another geographic market without a customer contract in place. If no customer contracts are obtained, we would be required to absorb these costs. Mobilization and relocating activities could, therefore, have a material adverse effect on our business, financial condition, and results of operations.

Operating and maintenance costs of our rigs may be significant and may not correspond to revenue earned.

Our total operating costs are generally related to the number of drilling rigs in operation and the cost level in each country or region where such drilling rigs are located. While operating revenues may fluctuate as a function of changes in dayrate, costs for operating a rig may not be proportional to the dayrate received and may vary based on a variety of factors, including the scope and length of required or customer-requested rig preparations and the duration of the contractual period over which such expenditures are amortized. Any investments in our rigs may not result in an increased dayrate for, or income from, such rigs.

Inflation may adversely affect our operating results.

We have continued to experience increases in the cost of labor and materials, and inflationary pressures may continue into 2026. These factors may have an adverse effect on our ability to maintain current levels of gross margin and general and administrative expenses as a percentage of total revenue if our dayrates do not sufficiently increase to cover these increased costs, as well as result in increases in our capital expenditures. For instance, tariffs have been recently proposed and/or instituted on imports to the United States, together with other regulations affecting trade between the United States and countries in which we conduct business and source components. A number of other nations have, in response, imposed, or threatened to impose, reciprocal tariffs on imports from the United States as well as certain other trade restrictions. In the event that the above measures and any related retaliatory tariffs were to be imposed for prolonged periods of time, this could increase the cost of components and raw materials in our supply chain and, consequently, our costs. Most of our contracts have dayrates that are fixed over the contract term. While some of our long-term contracts contain rate adjustment provisions, they can be based on market fluctuations rather than cost increases. To the extent a drilling contract provides for escalations attributable to inflation in our costs, those adjustments will lag the impact of inflationary pressures and may not reflect the full impact to us of any cost inflation. As drilling contracts with such provisions expire or are terminated, there can be no assurance that future drilling contracts will contain similar provisions, which may reduce our margins in inflationary environments. In addition, inflation is often, and has recently been, accompanied by higher interest rates. Such higher interest rates may affect our ability to enter into future traditional debt financing, as high inflation may result in an increase in the cost to borrow. Future increases in interest rates may negatively impact our cost of capital and ability to access capital markets.

If our drilling rigs are idle for reasons that are not related to the ability of the rig to operate, our customers may be entitled to pay a waiting, or standby, rate that is lower than the full operational rate. In addition, if our drilling rigs are taken out of service for maintenance and repair for a period of time that exceeds the scheduled maintenance periods set forth in our drilling contracts, we may not be entitled to payment of full dayrates until the rig is able to work. Several factors could cause operational interruptions, including:

•breakdowns of equipment and other unforeseen engineering problems;

•work stoppages, including labor strikes;

•shortages of material and skilled labor;

•shipyard availability, failures, and difficulties;

•delays in repairs by suppliers;

•surveys by government and maritime authorities;

•periodic classification surveys;

•delays imposed by or resulting from compliance with permits, laws, regulations, or litigation;

•severe weather, strong ocean currents, or harsh operating conditions;

•force majeure events; and

•the occurrence or threat of epidemic or pandemic diseases, or any government response to such occurrence or threat.

Several of these factors have been exacerbated by global supply chain disruptions, the conflict between Russia and Ukraine, Middle East conflicts, and the Venezuela conflicts, labor strikes at critical points in a supply chain, and their respective regional and global ramifications. If a delay of commencement of operations, or interruption of operations, exceeds a determined period, our customers may have the right to pay a rate that is significantly lower than the waiting rate for a period of time, may be entitled to liquidated damages, and may have a right to terminate the drilling contracts related to the subject rig.

We may have difficulty obtaining or maintaining insurance in the future and our insurance coverage and contractual indemnity rights may not protect us against all the risks and hazards we face.

We do not procure insurance coverage for all of the potential risks and hazards we may face. Furthermore, no assurance can be given that we will be able to obtain insurance against all of the risks and hazards we face or that we will be able to obtain or maintain adequate insurance at rates and with deductibles or retention amounts that we consider commercially reasonable. Some insurance carriers may decide not to offer insurance to companies operating in the oil and gas industry, potentially resulting in less available insurance capacity and/or higher rates. In addition, our insurance carriers may interpret our insurance policies such that they do not cover losses for which we make claims.

Although we maintain insurance in the geographic areas in which we operate, pollution, reservoir damage, and environmental risks generally are not fully insurable. Our insurance policies may not adequately cover our losses or may have exclusions of coverage for some losses. We do not have insurance coverage for all risk exposures. For example, we carry no loss of hire insurance for any rigs in our fleet. Furthermore, the damage sustained to offshore oil and gas assets in the United States as a result of hurricanes has negatively impacted certain aspects of the energy insurance market, resulting in more restrictive and expensive coverage for US named windstorm perils due to the price or lack of availability of coverage. Accordingly, we have primarily self-insured the rigs in the US Gulf for property damage resulting from named windstorm perils, and only have windstorm third-party liability coverage for all rigs, subject to certain limits. We may, in the future, be unable to purchase named windstorm coverage for some or all of the rigs operating in the US Gulf.

Under our drilling contracts, liability with respect to personnel and property is customarily assigned on a “knock-for-knock” basis, which means that we and our customers assume liability for our respective personnel and property, irrespective of the fault or negligence of the party indemnified. There can also be no assurance that those parties with contractual obligations to indemnify us will necessarily be in a financial position to do so. During depressed market periods, such as the one in which we recently operated, the contractual indemnity provisions we are able to negotiate in our drilling contracts may require us to assume more risk than we would during normal market periods.

Our failure, or the failure of our service providers or other third parties, to adequately protect our sensitive information, operational technology systems, and critical data could have a material adverse effect on our business, results of operations, and financial condition.

Our day-to-day operations increasingly depend on information and operational technology systems that we manage, and other systems that third parties, such as our service providers, vendors, and equipment providers, manage, including critical systems on our drilling units. Many of these systems are interconnected, and certain third parties may have direct or indirect access to our systems or data in connection with providing services to us. These systems are subject to risks associated with growing and evolving cyber incidents or attacks or other disruptions. These risks include, but may not be limited to, human error, power outages, computer and telecommunication failures, natural disasters, fraud or malice, social engineering or phishing attacks, viruses or malware, and other cyber incidents or attacks, such as denial-of-service or ransomware attacks, including attacks that leverage artificial intelligence. Entities or groups, including cybercriminals, competitors, and nation state actors, have mounted cyber-attacks on businesses and other organizations to disable or disrupt computer systems, impair operational capabilities, cause downtime, and, in some cases, steal data. Geopolitical tensions or conflicts and broader societal or technological developments may increase the frequency, sophistication, or severity of cyber security threats, and the evolving use of advanced technologies by threat actors, including the increased adoption of artificial intelligence technologies, may further heighten these threats. As threat actors adopt and deploy AI tools, the speed and sophistication of cyber threats and privacy risks may increase across our environment and those of our vendors and suppliers. As we and/or our service providers plan or work to integrate AI-enabled tools, those tools may be targeted or misused in ways that compromise data or enable harmful outputs.

Also, many of our employees may have a hybrid work schedule. This opens additional avenues of cyber threats such as social engineering, remote access abuse, and home network exposure. We mitigate these risks with enterprise access controls, device hardening standards, and ongoing employee security awareness training. Due to the nature of cyber incidents and attacks, such events affecting our systems or the services or equipment used by our service or equipment providers could go undetected for a prolonged period of time, and the full nature and scope of any potential harm may not be immediately apparent.

Such incidents could also result in regulatory investigations or enforcement actions, litigation (including class action litigation), contractual liabilities, fines, or penalties. Additionally, it may be difficult to determine the best way to investigate, mitigate, contain, and remediate the harm caused by a cyber incident or attack. Such efforts may not be successful, and we may make errors or fail to take necessary actions. It may take considerable time for us to investigate and evaluate the full impact of incidents, particularly for complex or sophisticated incidents. These factors may inhibit our ability to provide prompt, full, and reliable information about the incident to our customers, partners, regulators, and the public.

In addition, Noble is subject to a variety of continuously evolving and developing laws and regulations in the United States and abroad governing, or proposed to govern, cyber security, data privacy and protection, the development and use of AI, and the unauthorized disclosure of confidential or protected information, including the UK Data Protection Act, the EU General Data Protection Regulation, the Data Protection Law, as revised, of the Cayman Islands, the California Consumer Privacy Act, as amended by the California Privacy Rights Act, the Cyber Incident Reporting for Critical Infrastructure Act, and other similar legislation in domestic and international jurisdictions, which pose increasingly complex compliance challenges

and potentially elevate costs. Any failure to comply with these laws and regulations could result in significant penalties and legal liability. These laws and regulations are continuously evolving and developing, creating significant uncertainty, as data privacy and security requirements may be interpreted and applied differently across jurisdictions and may impose inconsistent or conflicting requirements. Additionally, AI outputs may be inaccurate, biased, or unreliable, which could result in legal, regulatory, or reputational harm, and their misuse could create compliance or reputational risks and lead to legal exposure.

Upgrades, refurbishment, and repair of rigs are subject to risks, including delays and cost overruns, that could have an adverse impact on our available cash resources and results of operations.

We will continue to make upgrades, refurbishment, and repair expenditures to our fleet from time to time, some of which may be unplanned. In addition, we may reactivate rigs that have been cold or warm stacked and make selective acquisitions of rigs. For example, in 2025, we signed long-term contracts that will necessitate substantial capital expenditures to upgrade specific rigs according to requirements by some of our customers. These projects typically become more time consuming and expensive the older the fleet becomes and are subject to risks of cost overruns or delays inherent in any large construction project as a result of numerous factors, including the following:

▪shortages of equipment, materials, or skilled labor;

▪work stoppages and labor disputes;

▪unscheduled delays in the delivery of ordered materials and equipment;

▪local customs strikes or related work slowdowns that could delay importation of equipment or materials;

▪weather interferences;

▪difficulties in obtaining necessary permits or approvals or in meeting permit or approval conditions;

▪design, engineering, and obsolescence problems;

▪inadequate regulatory support infrastructure in the local jurisdiction;

▪latent damages or deterioration to hull, equipment, and machinery in excess of engineering estimates and assumptions;

▪unforeseen increases in the cost of equipment, labor, and raw materials, particularly steel, due to inflation or other factors;

▪unanticipated actual or purported change orders;

▪customer acceptance delays;

▪disputes with shipyards and suppliers;

▪delays in, or inability to obtain, access to funding;

▪shipyard availability, failures, and difficulties, including as a result of financial problems of shipyards or their subcontractors; and

▪failure or delay of third-party equipment vendors or service providers.

Additionally, capital expenditures could materially exceed our planned capital expenditures. Moreover, when our rigs are undergoing upgrade, refurbishment, and repair, they may not earn a dayrate during the period they are out of service. If we experience substantial delays and cost overruns in our shipyard projects, it could have a material adverse effect on our business, financial condition, and results of operations.

Failure to attract and retain skilled personnel or an increase in personnel costs could adversely affect our operations.

Our employees are vital to our success.

In addition, our ability to retain our key business leaders is critical. The market for highly skilled workers and leaders in our industry is extremely competitive and we may need to invest significant amounts of cash and equity to attract and retain new employees. We may never realize returns on these investments. In order to help attract, retain, and motivate qualified employees, we use equity-based awards and performance-based cash incentive awards. Sustained declines in our stock price, or lower stock price performance relative to competitors, can reduce the retention value of our equity-based awards, which can impact the competitiveness of our compensation.

Supplier capacity constraints or shortages in parts or equipment, supplier production disruptions, supplier quality, and sourcing issues or price increases could increase our operating costs, decrease our revenues, and adversely impact our operations.

Our reliance on third-party suppliers, manufacturers, and service providers to secure equipment used in our drilling operations exposes us to volatility in the quality, price, and availability of such items. Certain specialized parts and equipment we use in our operations may be available only from a single or small number of suppliers. If the market for our services improves and we seek to reactivate warm or cold stacked rigs, upgrade our working rigs, or purchase additional rigs, these reductions and global supply chain constraints could make it more difficult for us to find equipment and parts for our rigs.

As part of our business strategy we have pursued and completed, and may continue to pursue, mergers, acquisitions, dispositions of businesses or assets, or other strategic transactions that we believe will enable us to strengthen or broaden our business. Mergers, acquisitions, dispositions, and other strategic transactions involve various risks, including, among other things, (i) difficulties relating to integrating or disposing of a business, including changes to our employee workforce and unanticipated changes in customer, vendor, and other third-party relationships, (ii) failure to integrate operations and internal controls, including those related to financial reporting, disclosure, and cyber security and data protection, (iii) diversion of management’s attention from day-to-day operations, (iv) failure to realize the anticipated benefits of such transactions, such as cost savings and revenue enhancements, (v) potentially substantial transaction costs, (vi) failure to identify significant issues at the target during the due diligence process, which could result in financial or legal exposure, and (vii) potential impairment resulting from the overpayment for an acquisition.

Future mergers or acquisitions may require us to obtain additional equity or debt financing, which may not be available on attractive terms. Moreover, to the extent a transaction financed by non-equity consideration results in goodwill, it will reduce our tangible net worth, which might have an adverse effect on credit availability.

At certain locations where we operate, there is an increased potential for seasonal weather events that could lead to limits or restrictions on our ability to operate, damage to our assets and equipment, liabilities or claims, operational delays for recovery and repair, liability claims, impacts on customer and vendor contracts, regulatory fines and penalties, and uninsured losses, which could adversely affect our business.

Certain areas of the world where we operate, such as the US Gulf, South Atlantic, the North Sea, Southwest Pacific, South China Sea, and Southeast Indian Ocean, experience significant weather events, typically on a seasonal basis, manifesting as an unnamed wind event or of a magnitude that places it in a category of tropical cyclone, hurricane, typhoon, or extratropical cyclone. Information upon which we rely when contracting and operating our drilling rigs is merely projections and the actual course, speed, and/or severity of any one event could ultimately be unexpected and lead to an unanticipated encounter and or impact, exposing our assets and personnel to extreme wind and sea conditions that could result in limits or restrictions on our ability to operate, injuries or loss of life, damage to or a loss of our assets and equipment, liabilities or claims, operational delays for recovery and repair, impacts on customer and vendor contracts, regulatory fines and penalties, and/or uninsured losses, which could adversely affect our business and financial performance. Moreover, a potential result of climate change is more frequent or more severe weather events. To the extent such weather events become more frequent or more severe, the risks associated with severe weather events could intensify.

Our long-term success depends on our ability to effectively respond to the impact of long-term changes in the energy mix, which could require adapting our fleet and business to potentially changing government requirements, customer preferences, and customer base, as well as engaging with existing and potential customers and suppliers to develop or implement solutions designed to reduce or to decarbonize oil and gas operations or to advance renewable and other alternative energy sources.

We rely on third-party suppliers and subcontractors to provide or complete parts, crew, and equipment, as applicable, for our projects and our operations may be adversely affected by the substandard performance or nonperformance of those suppliers or third-party subcontractors due to production disruptions, quality and sourcing issues, price increases, or consolidation of suppliers and sub-contractors as well as equipment breakdowns.

Our reliance on third-parties such as suppliers, manufacturers, subcontractors, and other service providers for equipment, services, and labor used in our drilling operations, including with respect to our bareboat charter agreements, exposes us to volatility in the quality, price, and availability of such resources. In addition, consolidation of suppliers may limit our ability to obtain supplies and services, when needed, at an acceptable cost or at all.

Equipment deficiencies or breakdowns, whether due to faulty parts, quality control issues, or inadequate installation, may result in increased maintenance costs and could adversely affect our operations and revenues by resulting in financial downtime. Subcontractors are used to perform certain services and to provide certain input in areas where we do not have requisite expertise and are engaged on some parts of our projects, but may be used for a majority of the services in respect of new business models. The subcontracting of work, including with respect to our

bareboat charter agreements, exposes us to risks associated with planning interface nonperformance, delayed performance, or substandard performance by our subcontractors. Any inability to hire qualified subcontractors could hinder successful completion of a project. Further, our employees may not have the requisite skills to be able to monitor or control the performance of these subcontractors. We may suffer losses on contracts if the amounts we are required to pay for subcontractor services exceed original estimates. Remedial or mitigating actions, such as requiring contractual obligations from subcontractors that are similar to those we have with our customers, and requesting parent guarantees from subcontractors to cover nonperformance, may not be available or sufficient to mitigate these risks. For example, we have experienced issues with the performance of some of our key suppliers in the past, in particular in relation to delays in the delivery and maintenance of subsea well-control equipment. Such issues could have a negative effect on our business, financial condition, and results of operations.

We face risks associated with creating and executing new business models, particularly when such business models involve a risk profile, remuneration, or financial scheme that is different from a conventional drilling contract.

We are exploring, and have in the past implemented, various degrees of innovative business models with customers and partners in order to expand our share of the value chain, while simultaneously creating better outcomes for our customers and long-term resilience of our business through increased customer collaboration, differentiation, and utilization. Although such business model innovation is intended to offer further earnings opportunities, there are risks associated with creating and executing new business models, particularly when such business models involve a risk profile, remuneration, or financial scheme that is different from our conventional drilling contracts.

Two broad categories of business models include:

(i)offering integrated services or integrating new services into offerings to customers as an integrated service provider with the objective of improving efficiencies; and

(ii)exploring alternative financial models focused on risk and reward sharing through, among other things, bonus-malice schemes, performance-based schemes, deferred payments, fixed pricing, or co-investments, enabling operators to develop fields that would otherwise be economically challenged.

However, forecasting the success of any new business model is inherently uncertain and depends on a number of factors both within and outside our control. Our actual revenue and profit generated from such business models may be significantly greater or less than forecasts. In addition, the efficiencies anticipated from new business models may fail to be realized, the costs may be higher, and the counterparty risk greater than expected. In addition, as we create and execute more new business models and expand into other parts of the value chain, our risk profile may continue to shift. Entering into new business models could have an adverse impact on our business, financial condition, and results of operations.

Regulatory and Legal Risks

Changes in, compliance with, or our failure to comply with certain laws and regulations could have a material adverse effect on our results of operations by adding to our costs, or negatively impact our operations by causing delays or limiting activity.

Our business is affected by public policy and laws and regulations relating to the energy industry in the geographic areas where we do or seek to operate or otherwise have a presence, including laws and regulations relating to the environment (including climate change and GHG emissions and regulations that for economic, sustainability, or other reasons curtail or encumber our ability to operate competitively or negatively impact exploration, development, and production of oil and gas). We may be required to make significant capital expenditures to comply with governmental laws and regulations.

In addition, it has resulted in an increased possibility of litigation or investigations brought by public and private entities against oil and gas companies in connection with their GHG emissions.

The modification of existing laws or regulations or the adoption of new laws or regulations that curtail or encumber our ability to operate competitively or negatively impact exploration, development, and production of oil and gas could materially and adversely affect our business by limiting drilling opportunities, increasing our cost of doing business, discouraging our customers from drilling for hydrocarbons, disrupting revenue through permitting or similar delays, or subjecting us to liability.

There have been various recent legal developments in the UK offshore sector, including the extension of the energy profits levy on our customer base, increased environmental scrutiny of development plans and the prohibition of new exploration licenses. These developments have reduced oil and gas exploration and development activities in the UK North Sea, which, in turn, could reduce the demand for our services.

In addition, efforts have been made and continue to be made in the international community toward the adoption or enhancement of international treaties or protocols related to protecting the environment, reducing climate change, reducing the use of hydrocarbon-based fuel, and encouraging the implementation of GHG emission pledges. Fuel conservation measures, alternative fuel requirements and increasing consumer demand for alternatives to oil and gas could reduce demand for oil and gas. These measures may result in a reduced global reliance on and future demand for oil and gas, which could have a material impact on our business.

New or amended legislation and regulatory programs to reduce GHG emissions, changes in their interpretation or application, or increased reporting obligations, could increase our cost of doing business, discourage our customers from drilling for hydrocarbons, or otherwise have an adverse effect on our business, financial condition, and results of operations. Our operations are subject to various laws and regulations in countries in which we operate, including laws and regulations relating to:

▪the environment and the health and safety of personnel;

▪the importing, exporting, equipping, and operation of drilling rigs;

▪finance and currency exchange controls;

▪oil and gas exploration and development;

▪taxation of local and offshore earnings and earnings of expatriate personnel; and

▪use and compensation of local employees, contractors, and suppliers, and involvement of foreign contractors.

Public and governmental scrutiny of the energy industry has resulted in increased regulations being proposed and often implemented. In addition, we may be required to post additional surety bonds to secure performance, tax, customs, and other obligations relating to our rigs in jurisdictions where bonding requirements are already in effect and in other jurisdictions where we may operate in the future. These requirements would increase the cost of operating in these countries, which could materially adversely affect our business, financial condition, and results of operations.

For example, following a years’ long rule making process, both BSEE and BOEM updated and expanded their respective offshore decommissioning financial assurance and bonding requirements. The updated requirements, which were finalized by BSEE in 2023 and BOEM in 2024, are stricter than previous requirements and may increase the costs of operating on the Outer Continental Shelf. BOEM and BSEE could issue new rules relating to well control equipment and operational requirements that fall under their authority in the future. Future actions taken by the United States to limit the availability of new oil and gas leases on the Outer Continental Shelf, or delays imposed by or resulting from compliance with permits, laws, regulations, or litigation would adversely impact the offshore oil and gas industry and impact demand for our services.

We are also subject to increasing regulatory requirements and scrutiny in certain jurisdictions and other countries, including the North Sea. If new regulations, policies, operating procedures, and the possibility of increased legal liability resulting from the adoption or amendment of rules and regulations applicable to our operations in the United States or other jurisdictions are viewed by our current or future customers as a significant impairment to expected profitability on projects, then they could discontinue or curtail their offshore operations in the impacted region, thereby, adversely affecting our operations by limiting drilling opportunities or resulting in materially increased costs.

Heightened attention to sustainability matters may negatively impact our business and financial results.

In recent years, regulators, investors, and the general public have focused on activities in the energy industry that relate to sustainability matters. For example, in many jurisdictions where we operate, there are campaigns for governmental and private action in connection with sustainability criteria and initiatives, including through the investment and voting practices of individual and institutional investors and investment advisers, public company rating agencies, and others in or connected to the investing community (for instance, initiatives such as the new strategy adopted by the International Maritime Organization in July 2023 to advance the prevention and control of marine pollution through the reduction of GHG emissions from ships). Stakeholders and members of the investment community continue to screen and assess companies such as ours for sustainability and ESG performance information measured against the expanded list of sustainability and ESG metrics advanced by the various sustainability standards and ESG ratings sources, and in some cases, such criteria may limit or restrict financing or other investments in the energy industry. As discussed above, there continues to be a public and governmental concentration on environmental matters as compared to other sustainability matters, with a focus on environment related company practices, performance, and compliance, that could result in sustainability commitments and disclosures being subjected to increased scrutiny. Our stakeholders hold varied and sometimes conflicting views, and our initiatives in this area may be unable to satisfy all stakeholders. If we are unable to positively manage our sustainability performance, effectively administer our sustainability tracking and reporting, clearly communicate our sustainability strategy and commitments and meet publicly disclosed targets such as our aspiration to reduce carbon intensity by 20% by 2030 (as defined in our disclosures), we could experience reputational harm, additional costs and financial penalties, increased scrutiny from the investment community, special interest groups, and enforcement authorities, miss or be excluded from business opportunities, have delayed or cancelled projects, experience a reduction in our equity share price, or encounter limitations to our access to financing or capital, any of which could have a material adverse effect on our operations, earnings, cash flows, and financial condition.

Likewise, others in the investment community (and some regulators) have expressed opposition to certain sustainability initiatives. This divergence in stakeholder expectations across jurisdictions may increase legal and compliance costs, expose us to political or reputational risks, and potentially disrupt relationships with certain stakeholders.

Any violation of anti-bribery, anti-corruption, or anti-fraud laws, including the Foreign Corrupt Practices Act, the United Kingdom Bribery Act, the United Kingdom Modern Slavery Act, or other applicable laws and regulations could result in significant expenses, divert management attention, and otherwise have a negative impact on the Company.

In the conduct and operation of our business, particularly in countries with a reputation of illegal activities that include government corruption, bribery, money laundering, and human rights issues, we are subject to the risk that we, our affiliated entities, agents, or service providers, or their respective officers, directors, employees, and agents may take action determined to be in violation of such local laws or laws applicable to us and those acting on our behalf, including the US Foreign Corrupt Practices Act of 1977 (the “FCPA”), the United Kingdom Bribery Act 2010 (the “UK Bribery Act”), the United Kingdom Modern Slavery Act 2015 (the “UK Modern Slavery Act”), and similar laws. Further, detecting, investigating, and resolving actual or alleged violations is expensive and would consume significant time and attention of our senior management.

Any failure to comply with the complex laws and regulations governing international trade could adversely affect our operations.

The shipment of goods, services, and technology across international borders subjects our business to extensive trade laws and regulations. Import activities are governed by unique customs laws and regulations in each of the countries of operation. Moreover, many countries and governing bodies, including the United States, European Union and the United Kingdom, control the export and re-export of certain goods, services, and technology and impose related export recordkeeping and reporting obligations.

The laws and regulations concerning import activity, export recordkeeping and reporting, export control, and economic sanctions are complex and constantly changing. These laws and regulations may be enacted, amended, enforced, or interpreted in a manner materially impacting our operations. Shipments can be delayed and denied export or entry for a variety of reasons, some of which are outside our control and some of which may result from failure to comply with existing legal and regulatory regimes. Shipping delays or denials could cause unscheduled operational downtime. Any failure to comply with applicable legal and regulatory trading obligations could also result in criminal and civil penalties and sanctions, such as fines, imprisonment, debarment from government contracts, seizure of shipments, and loss of import and export privileges.

Additionally, operating in countries, or dealing with individuals who are specially designated nationals, subject to sanctions and embargoes imposed by certain countries or governing bodies such as the US, UK or EU exposes us to additional and varying regulatory regimes, and can give rise to business and compliance risks. There can be no assurance that we will be in compliance in the future, particularly as the scope of certain laws may be unclear and may be subject to changing interpretations. Any such violation could result in fines or other penalties and could result in some investors deciding, or being required, to divest their interest, or not to invest, in us.

We are, or in the future could be, subject to investigations, litigation, and claims that could have an adverse effect on us.

These matters may include, among other things, contract disputes, personal injury claims, asbestos and other toxic tort claims, environmental claims or proceedings, employment matters, issues related to employee or representative conduct, governmental claims for taxes, duties, customs or other regulatory findings, and litigation that arises in the ordinary course of our business.

We could also face increased climate-related litigation with respect to our operations both in the US and around the world. Governmental and other entities in various US states, such as California and New York, have filed lawsuits against energy companies. These suits allege damages as a result of climate change, and the plaintiffs are seeking unspecified damages and abatement under various tort theories. Similar lawsuits may be filed in other jurisdictions both in the US and globally.

Financial, Tax, and Governance Risks

We may record impairment charges on property and equipment, including rigs and related capital spares.

We evaluate the impairment of property and equipment, which include rigs and related capital spares, whenever events or changes in circumstances, including a decision to cold stack, retire, or sell rigs, indicate that the carrying amount of an asset may not be recoverable. An impairment loss on our property and equipment may exist when the estimated undiscounted cash flows expected to result from the use of the asset and its eventual disposition are less than its carrying amount. Any impairment loss recognized represents the excess of the asset’s carrying value over the estimated fair value. As part of this analysis, we make assumptions and estimates regarding future market conditions. To the extent actual results do not meet our estimated assumptions, for a given rig or piece of equipment, we may take an impairment loss in the future. In addition, we may also take an impairment loss on capital spares and other capital equipment when we deem the value of those items has declined due to factors like obsolescence, deterioration or damage. Based upon our impairment analyses for the year ended December 31, 2025, we recorded impairment charges of $82.7 million. We did not record any impairment charges for the year ended December 31, 2024. There can be no assurance that we will not have to take additional impairment charges in the future if depressed market conditions return, or that we will be able to return cold stacked rigs to service in the time frame and at the reactivation costs or at the dayrates that we projected. It is reasonably possible that the estimate of undiscounted cash flows may change in the near term, resulting in the need to write down the affected assets to their corresponding estimated fair values.

The 2023 Revolving Credit Agreement, the indenture for the 2030 Notes, and the indenture for the Diamond Second Lien Notes each contain various restrictive covenants limiting the discretion of our management in operating our business.

In particular, the 2023 Revolving Credit Agreement limits the ability of Noble Finance II LLC (“Noble Finance II”) and the ability of its restricted subsidiaries to, among other things and subject to certain limitations and exceptions, (i) incur, assume or guarantee additional indebtedness, (ii) pay dividends or distributions on capital stock or redeem or repurchase capital stock, (iii) make investments, (iv) repay, redeem, or amend certain indebtedness, (v) sell stock of its subsidiaries, (vi) transfer or sell assets, (vii) create, incur, or assume liens, (viii) enter into transactions with certain affiliates, (ix) merge or consolidate with or into any other person or undergo certain other fundamental changes, and (x) enter into certain burdensome agreements.” Such mandatory prepayments and commitment reductions may affect cash available for use in the Company’s business. Our failure to comply with these covenants could result in an event of default which, if not cured or waived, could result in all obligations under the 2023 Revolving Credit Facility to be declared due and payable immediately and all commitments thereunder to be terminated.

The 8.000% Senior Notes due 2030 (the “2030 Notes”) are fully and unconditionally guaranteed, jointly and severally, by the direct and indirect subsidiaries of Noble Finance II that are guarantors under the 2023 Revolving Credit Facility. The ability of Noble Finance II to comply with the covenants and restrictions contained in the indenture for the 2030 Notes may be affected by events beyond its control. Upon the triggering of any such provision, the relevant creditor may:

▪not be required to lend any additional amounts to Noble Finance II;

▪elect to declare all borrowings outstanding due to them, together with accrued and unpaid interest and fees, to be due and payable;

▪have the ability to require Noble Finance II to apply all of its available cash to repay such borrowings; and/or

▪prevent Noble Finance II from making debt service payments under its other agreements, any of which could result in an event of default under the 2030 Notes.

If any of our existing indebtedness were to be accelerated, there can be no assurance that we would have, or be able to obtain, sufficient funds to repay such indebtedness in full.

In addition, the Diamond 8.500% Senior Secured Second Lien Notes due October 2030 (the “Diamond Second Lien Notes”) are issued by Diamond Foreign Asset Company and Diamond Finance, LLC (collectively, the “Issuers”) and are fully and unconditionally guaranteed, jointly and severally, on a senior secured basis by Noble Offshore Drilling, Inc. (formerly known as Dolphin Merger Sub 2, Inc. and as successor by merger with Diamond) (“NODI”), and each of its existing restricted subsidiaries (other than the Issuers) and by certain of NODI’s future restricted subsidiaries.

Tax returns that we file and/or tax payments that we make will be subject to review and examination. In addition, Noble may have exposures with respect to the tax audits and tax disputes of certain third parties which were under a joint taxation contribution arrangement with certain subsidiaries that Noble acquired in the business combination (the “Business Combination”) with Maersk Drilling (as defined below).

Our consolidated effective income tax rate may vary substantially from one reporting period to another.

For example, certain countries within which we operate or own substantial assets have enacted changes to their tax laws in response to the Organization for Economic Cooperation and Development’s ongoing Base Erosion and Profit Shifting initiatives and these and other countries may enact changes to their tax laws or practices in the future (prospectively or retroactively), which may have a material adverse effect on our financial position, operating results and/or cash flows.

In addition, as a result of frequent changes in the taxing jurisdictions in which our drilling rigs are operated and/or owned, changes in the overall level of our income and changes in tax laws, our consolidated effective income tax rate may vary substantially from one reporting period to another. Income tax rates imposed in the tax jurisdictions in which our subsidiaries conduct operations vary, as does the tax base to which the rates are applied. In some cases, tax rates may be applicable to gross revenues, statutory or negotiated deemed profits, or other bases utilized under local tax laws, rather than to net income. Our drilling rigs frequently move from one taxing jurisdiction to another to perform contract drilling services. In some instances, the movement of drilling rigs among taxing jurisdictions will involve the transfer of ownership of the drilling rigs among our subsidiaries.

Fluctuations in exchange rates and nonconvertibility of currencies could result in losses to us.

We may experience currency exchange losses when revenues are received or expenses are paid in nonconvertible currencies, when we do not hedge an exposure to a foreign currency, when the result of a hedge is a loss or if any counterparty to our hedge were to experience financial difficulties. We may also incur losses as a result of an inability to collect revenues due to a shortage of convertible currency available to the country of operation, controls over currency exchange or controls over the repatriation of income or capital.

Certain shareholders own a significant portion of our outstanding equity securities, and their interests may not always coincide with the interests of other holders of the Ordinary Shares.

As a result, these investors could have significant influence over all matters presented to our shareholders for approval, including election and removal of our directors, change in control transactions, and the outcome of all actions requiring a majority shareholder approval.

The interests of these investors may not always coincide with the interests of the other holders of the Ordinary Shares, and the concentration of control in these investors may limit other shareholders’ ability to influence corporate matters. The concentration of ownership and voting power of these investors may also delay, defer, or even prevent an acquisition by a third party or other change of control of our Company, and may make some transactions more difficult or impossible without their support, even if such events are in the best interests of our other shareholders. In addition, the concentration of voting power may adversely affect the trading price of the Ordinary Shares.

Holders of the Ordinary Shares may not receive dividends on their Ordinary Shares, and we may decrease or suspend our dividend on, or our repurchases of, our Ordinary Shares.

Holders of the Ordinary Shares are entitled to receive only such dividends as our Board of Directors may declare and pay out of funds legally available for such payments. Such may be paid only out of Noble’s “distributable reserves” as determined by reference to relevant statutory accounts in accordance with English law, and additionally as permitted under our credit facilities and other financing arrangements. Therefore, Noble is not permitted to pay dividends out of share capital, which includes share premium. We are not required to pay a dividend or effect share repurchases, and any determination to pay dividends and other distributions in cash, stock, or property, or to effect share repurchases by us in the future, including determinations as to the amount of any such dividend, distribution, or repurchase, will be at the discretion of our Board of Directors. Our payment of dividends and share repurchases may vary from historical practices or our stated expectations.

Future sales, or the availability for sale, of substantial amounts of the Ordinary Shares or the exercise of warrants would have a dilutive effect to shareholders of the Company, and the perception that these sales may occur could adversely affect the trading price of the Ordinary Shares, and could impair our ability to raise capital through future sales of equity securities.

As of February 6, 2026, there were 159,197,398 Ordinary Shares outstanding. In addition, as of February 6, 2026, 885,902 Tranche 1 Warrants (as defined below) and 941,557 Tranche 2 Warrants (as defined below) were outstanding and exercisable. In addition, new equity awards may be granted under the Noble Corporation plc 2022 Long-Term Incentive Plan, pursuant to which, up to 3,881,176 new Ordinary Shares may be issued.

A large percentage of the Ordinary Shares (or warrants exercisable for Ordinary Shares) are held by a relatively small number of investors.

As of February 6, 2026, the Mandatory Exercise Condition (as defined in the applicable warrant agreement) for the Tranche 1 Warrants and the Tranche 2 Warrants had been satisfied. Between January 1, 2025, and December 31, 2025, an aggregate of 875 Ordinary Shares were issued pursuant to exercise of Tranche 1 Warrants, Tranche 2 Warrants, and Tranche 3 Warrants (as defined below). These exercises, and continued exercises of these warrants into Ordinary Shares pursuant to the terms of the outstanding warrants, will have a dilutive effect to the holdings of our existing shareholders.

We used Ordinary Shares for part of the consideration in the Diamond Transaction and may issue Ordinary Shares or other securities from time to time as consideration for future acquisitions and investments. If any such acquisition or investment is significant, the number of Ordinary Shares, or the number or aggregate principal amount, as the case may be, of other securities that we may issue may in turn be substantial. We may also grant registration rights covering those Ordinary Shares or other securities in connection with any such acquisitions and investments.

Sales of substantial amounts of the Ordinary Shares, or the perception that such sales could occur, may adversely affect the trading price of the Ordinary Shares.

Item 1B. Unresolved Staff Comments.

None.

Cyber Security.

Risk Management and Strategy

Cyber security risk management at Noble, along with other enterprise risks, is part of the Company’s Enterprise Risk Management Program. Risks arising from cyber security threats are assessed, identified, and managed by our Information Security Team, which reports to the Chief Information Officer (“CIO”). The Information Security Team is composed of the Director of Information Security, managers, and security analysts.

The Information Security Team is responsible for all of Noble’s cyber security-related activities such as advising on governance requirements, establishing cyber security policies, standards, and procedures, reporting on cyber security matters, determining risk appetite, setting security posture, evaluating security maturity, and supporting compliance with applicable cyber security frameworks. The team monitors both internal and external cyber security threats, including potential compromising internet-based attacks and phishing activities, and aims to implement and adapt protective measures as appropriate.

The Director of Information Security and information security managers carry broad manager level cyber security certifications, and the technical teams carry relevant specific technical certifications related to both information technology and operational technology security.

Noble’s cyber security program includes mandatory cyber security training and awareness activities, phishing exercises, and incident response plan testing, which are designed to support our cyber security risk management efforts and to assess whether various applicable implemented cyber security controls are operating as intended.

Noble works with various third-party service providers to help execute and advise on cyber security and conduct maturity assessments as needed.

Noble maintains processes to monitor all third parties with direct access into the Noble network through various implemented security tools that provide both detective and preventive controls. Such third parties are also subject to procurement processes and specific legal terms and conditions. Noble also engages with various third-party service providers in order to share intelligence regarding external threats. For any cyber security incidents, Noble may engage applicable third-party service providers to support with forensic investigations and incident response activities.

In the last fiscal year, Noble has not identified any known cyber security threats, incidents, or exposures that have materially affected Noble’s business strategy, results of operations, or financial condition, but Noble faces certain ongoing cyber security risks that, if realized, could materially and adversely affect Noble. This does not guarantee that future cyber security incidents or threats will not have a material impact or that we are not currently subject to an undetected cyber security incident or threat that may have such an impact. Potential cyber security risks to Noble are described in Part I, Item 1A, “Risk Factors,” which should be read in conjunction with the foregoing information.

Governance

The Audit Committee of the Board provides oversight of the Company’s cyber security program. The Information Security Team keeps management informed about cyber security initiatives, threats, incidents, training, and best practices on an on-going basis via circulated memos or meetings.

In addition to reporting through the Audit Committee and Enterprise Risk Management Program, the Board may periodically include cyber security as a standalone agenda item and may engage with the CIO and Information Security Team as well as external experts on cyber security threats.

The Information Security Team advises the CIO via reports on prevention, detection, mitigation, and remediation of cyber security threats. The CIO is responsible for the Information Security Team’s risk strategy, assessment, exceptions, risk acceptance, and management of the Company’s material cyber security risks. Ongoing assessments cover applicable information technology and operations technology systems, applications, and software used to support Noble’s corporate and rig operations. The outcomes of these various assessments inform the IT risk appetite and risk identification, and are discussed and shared with the CIO, executive management, the Audit Committee, and the Board of Directors.

The CIO has extensive cyber security knowledge and skills gained from over ten years of relevant work experience at Noble including two years as Deputy CIO as well as Director, IT prior to the merger with The Drilling Company of 1972 A/S, a

Danish public limited liability company (“Maersk Drilling”) with responsibility for cyber security. The CIO has multiple years of experience managing OT data and secure remote access for data management on and offshore. Prior to serving as Director, IT the CIO was the Manager, Business Systems responsible for application management and Enterprise Architecture. The Information Security Team advises the CIO on prevention, detection, mitigation, and remediation of cyber security incidents.

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