Tronox Holdings plc (TROX) Business

Item 1.    Business

Overview

Tronox is the world’s leading vertically integrated manufacturer of TiO2 pigment. We operate titanium-bearing mineral sand mines and beneficiation and smelting operations in Australia and South Africa to produce feedstock materials that can be processed into TiO2 for pigment, high purity titanium chemicals, including titanium tetrachloride, and ultrafine TiO2 used in certain specialty applications. Our strategy is to be vertically integrated and produce enough feedstock materials to be as self-sufficient as possible in the production of TiO2 at our seven pigment facilities located in the United States, Australia, Brazil, UK, France, and the Kingdom of Saudi Arabia. We believe that vertical integration is the best way to achieve our ultimate goal of delivering low cost, high-quality pigment to our approximately 1,200 TiO2 customers throughout the world. The mining, beneficiation and smelting of titanium bearing mineral sands also creates meaningful quantities of co-products including zircon, pig iron and the rare-earth bearing mineral, monazite, which we also supply to customers around the world.

The following chart highlights the TiO2 value chain we participate in.

The following sets forth the percentage of our revenue derived from sales of our products by geographic region for the year ended December 31, 2025.

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The below sets forth the percentage of our revenue derived from sales of our products for the year ended December 31, 2025.

For further financial information regarding our products and geographic regions, see the section entitled “Management’s Discussion and Analysis of Financial Condition and Results of Operations”, as well as Notes 4 and 25 of notes to our consolidated financial statements, each included elsewhere in this Form 10-K.

2025 Key Strategic Initiatives

The following sets forth the key strategic initiatives underway in 2025:

Become the Low Cost TiO2 Producer by Investing in our Business Processes and Strengthening Vertical Integration

Our ability to compete effectively in the TiO2 industry is determined by many factors, including innovation, reliability, product quality, customer service and price. The business processes that allow us to maximize the benefit of our vertical integration and global footprint --- the so-called “hidden factory” --- needs to be optimized if we are to successfully meet the pricing and other competitive pressures that characterize our industry. Throughout 2025, the Company reinforced its commitment to sustaining and enhancing its vertical integration competitive advantage. Key milestones were the successful commissioning of the Fairbreeze extension and the completion of construction at Namakwa East OFS which is currently in the process of being commissioned - two major mining projects in South Africa which replace existing mines approaching end of life. These new sites are expected to provide abundant reserves of natural rutile and zircon, along with high-grade ilmenite suitable for direct use or slag processing, ensuring a secure and cost-effective feedstock supply for years to come. These strategic investments are projected to deliver returns above the Company's cost of capital.

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Sustainable Cost Improvement Plan

In 2025, we launched a comprehensive Sustainable Cost Improvement Program designed to enhance cost efficiency and optimize asset performance across all aspects of our business. This initiative delivered over $90 million in annualized savings by year-end 2025 and is projected to achieve approximately $125-$175 million in annualized savings (including the $90 million realized in 2025) by the end of 2026. The program focuses on four key pillars: Operational Excellence, Technology Enablement, Supply Chain Optimization, and Selling, General & Administrative Expenses Alignment. We believe this strategic approach will position us to sustain long-term value creation while maintaining operational resilience.

Maintaining Adequate Liquidity

We took proactive measures to bolster liquidity and preserve flexibility, which included the successful execution of a $400 million senior secured bond offering which closed in September 2025, and reducing the quarterly dividend by 60%, effective in the third quarter of 2025. At the same time, throughout 2025, we implemented targeted operational measures to manage near-term cash flow, including: shutting down the Botlek pigment plant in the Netherlands, idling the Fuzhou pigment plant in China, and temporarily idling one furnace at the Namakwa smelter.

Develop Our Position as a Significant Supplier of Rare Earth Oxides

Tronox’s existing mining operations and tailing piles in South Africa and Australia contain significant quantities of monazite, a mineral containing rare earth elements (REEs) widely recognized as a critical mineral for the energy transformation underway to decarbonize the world’s economy. For these applications, REE must first be processed into an oxide form --- rare earth oxides or “REO” --- that can then be metallized for the production of permanent magnets. Every step of the REE supply chain today is dominated by China. China’s dominance of the processing of REO and production of permanent magnets is widely recognized as a serious strategic challenge by democratic governments around the world.

The separation, beneficiation and processing technologies that Tronox uses to turn titanium-bearing ores into TiO2 are applicable for turning monazite into REO. In the past, we sold our monazite in unconcentrated form as a waste product but given the increased value associated with REE, we are now seeking to maximize the value of our existing geologic resources and deploy our substantial technical know how and human capital to become a significant supplier of REO to non-Chinese producers of metals and permanent magnets.

In 2025, we received coordinated, non-binding and conditional letters of support/interest from Export Finance Australia and Export-Import Bank of the United States, respectively for up to an aggregate of US $600 million in limited or non-recourse financing to support the development of Tronox's rare earth supply chain. In addition, we took an approximate 5% equity interest in Lion Rock Minerals (ASX-LRM) ("LRM"), a mineral exploration company whose Minta and Minta Est deposits have the potential to be a major source of high quality monazite and rutile. Continuing to seek funding sources and develop a rare earth minerals business is an ongoing focus of management. See "Risk Factors - The Company may not be successful in arranging required financing and/or developing a financeable structure for its rare earth initiatives, and even if the required financing is obtained and/or a financing structure is achieved, the Company may not be successful in developing a viable rare earth supply chain."

Our Principal Products

TiO2

TiO2 Pigment

TiO2 pigment is used in a wide range of products due to its ability to impart whiteness, brightness, and opacity. TiO2 pigment is used extensively in the manufacture of paint and other coatings, plastics and paper, and in a wide range of other applications. Moreover, it is a critical component of everyday consumer applications due to its superior ability to cover or mask other materials effectively and efficiently relative to alternative white pigments and extenders. TiO2 pigment is considered to be a quality of life product. At present, it is our belief that there is no effective substitute for TiO2 pigment because no other white pigment has the physical properties for achieving comparable opacity and brightness or can be incorporated as cost effectively.

Ultrafine Specialty TiO2

We produce ultrafine TiO2 at our manufacturing facility in Thann, France. We market ultrafine TiO2 products under the CristalActiv® trademark. Ultrafine TiO2 has highly catalytic properties due to the relatively high surface area of each TiO2 molecule. The principal use of ultrafine TiO2 products is in NOx emission control products utilized in stationary, mobile and marine applications.

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In 2025, we generated $2.3 billion in revenue from sales of TiO2.

Zircon

Zircon (ZrSiO4) is a co-product of mining mineral sands deposits for titanium feedstock. Zircon is used as an additive in ceramic glazes, which makes the ceramic glaze more water, chemical and abrasion resistant. It is also used for the production of zirconium metal and zirconium chemicals, in refractories, as molding sand in foundries, and for TV screen glass, where it adds its structural stability at high temperatures and resistance to abrasive and corrosive conditions. Zircon typically represents a relatively low proportion of the in-situ heavy mineral sands deposits we mine, but has a relatively high value compared to other heavy mineral products. Refractories containing zircon are expensive and are only used in demanding, high-wear and corrosive applications in the glass, steel and cement industries. Foundry applications use zircon when casting articles of high quality and value where accurate sizing is crucial, such as aerospace, automotive, medical, and other high-end applications.

In 2025, we generated $274 million in revenue from sales of zircon.

Other Products

High Purity Pig Iron

During the process of smelting ilmenite at our smelters to increase the concentration of titanium and produce titanium slag, high purity pig iron is produced as a co-product. High purity pig iron is used as a raw material in foundries for the production of high-quality ductile iron castings. Ductile iron is used extensively throughout the world for the production of safety critical automotive parts, such as engine blocks, brake calipers and steering knuckles in cars and trucks.

Monazite

Like zircon, monazite is a co-product of mining mineral sands deposits for titanium feedstock. Monazite is concentrated and processed to remove contaminants, such as uranium and thorium, before being sold to rare earth processors and separated into specific rare earth oxides (REOs) such as neodymium (Nd), praseodymium (Pr), terbium (Tb), and dysprosium (Dy). These REOs can then be metallized and formed into permanent magnets, particularly NdFeB magnets, that are needed to manufacture electric vehicle motors, wind turbines and other green economy applications.

Feedstock

Most TiO2 products are derived from three naturally occurring minerals which are commonly referred to as heavy minerals or mineral sands: ilmenite, leucoxene and rutile. Ilmenite, rutile, leucoxene, as well as titanium slag and synthetic rutile which are processed from ilmenite, are the primary feedstock materials that we use for the production of TiO2 pigment. Titanium slag is produced by smelting ilmenite in an electric arc furnace to separate titanium-oxide from the iron and other impurities. Synthetic rutile is produced by reducing ilmenite in a rotary kiln, followed by leaching under various conditions to remove the metallic iron from the reduced ilmenite grains. The purpose of both processes is to increase the titanium concentration of the ilmenite. There is substantial overlap amongst each of the aforementioned with the primary differentiating factor being the level of titanium content. For instance, rutile has the highest titanium dioxide content of approximately 94% to 96%, while ilmenite has the lowest of approximately 45% to 65%.

Titanium Tetrachloride

We sell titanium tetrachloride (“TiCl4”) from our facilities in Thann, France and Yanbu, KSA. At our Thann facility in France, we produce TiCl4 dedicated for merchant market sales to customers for use mainly in the production of various types of pigments and catalyst products. At our Yanbu facility, we produce excess TiCl4 which we both sell directly to a joint venture between Advanced Metal Industries Cluster and Toho Titanium Metal Co. Ltd. ("ATTM") for use at ATTM's titanium sponge plant facility that is adjacent to our Yanbu facility and in the merchant market.

In 2025, we generated $326 million in revenue from the sale of high purity pig iron, monazite, titanium tetrachloride and other products.

The demand for certain of our products during a given year is subject to seasonal fluctuations. See “Risk Factors –

Risks Relating to our Business - The markets for many of our products have seasonally affected sales patterns”.

Mining and Beneficiation of Mineral Sands Deposits

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Our current operational mining and beneficiation of mineral sands deposits are comprised of the following:

•KwaZulu-Natal (“KZN”) Sands operations located on the eastern coast of South Africa consisting of the Fairbreeze mine, a concentration plant, a mineral separation plant and two smelting furnaces that produce titanium slag;

•Our Namakwa Sands operations located on the western coast of South Africa consisting of the Namakwa mine, two concentration plants, a mineral separation plant, as well as two smelting furnaces that produce titanium slag;

•Our Northern Operations complex in Western Australia consisting of the Cooljarloo dredge mine and floating heavy mineral concentration plant and the Chandala metallurgical site which includes a mineral separation plant and a synthetic rutile plant that produces synthetic rutile;

•Eastern Australia operations consisting of the Atlas mine and a heavy mineral concentration plant located there and a mineral separation plant located at Broken Hill, New South Wales; and

•Perth Basin operations in Western Australia consisting of the Wonnerup mine and a mineral separation plant.

Zircon and monazite are often, but not always, found in mineral sands deposits containing ilmenite. They are extracted, alongside ilmenite and rutile, as part of the initial mineral sands separation process.

The mining of mineral sands deposits is conducted either “wet,” by dredging or hydraulic water jets, or “dry,” by using earth-moving equipment to excavate and transport the sands. The type of mining operation we deploy is dependent upon the characteristics of the ore body. Dredge mining is generally the favored method of mining mineral sands, provided that the ground conditions are suitable, water is readily available and the deposit is low in slime content. Dry mining techniques are generally preferred in situations involving hard ground, discontinuous ore bodies, small tonnage, high slimes contents and/or very high grades.

Regardless of the type of mining technique, the first step in the beneficiation process after the mineral sands have been mined is to utilize wet concentrator plants to produce a high grade of heavy mineral concentrate (typically approximately 90% to 98% heavy mineral content). Screened ore is first de-slimed, a process by which slimes are separated from larger particles of minerals, and then processed through a series of spiral separators that use gravity to separate the heavy mineral sands from lighter materials, such as quartz. Residue from the concentration process is pumped back into either the open pits or slimes dams for rehabilitation and water recovery.

After producing heavy mineral concentrate in our wet concentrator plants, we separate the non-magnetic (rutile, zircon and monazite) and magnetic (ilmenite) fractions utilizing a variety of techniques. Through the separation process, we produce zircon which is sold directly to customers, rutile and leucoxene which can immediately be used as feedstock material to make TiO2 pigment, and monazite which we currently sell in a relatively unconcentrated form but which we plan on further processing before sale to extract greater value.

Ilmenite is generally further refined for use in our TiO2 pigment manufacturing processes. Depending on the characteristics of the ilmenite we use two fundamental processes to refine ilmenite. Both processes involve the removal of iron and other non-titanium material.

•Titanium slag is made by smelting ilmenite in an electric arc furnace to separate titanium-oxide from the iron and other impurities. The result is two products: “slag” which contains 86% to 89% titanium dioxide and is considered a TiO2 feedstock material, and high purity pig iron which is ready for sale to end-use customers.

•Synthetic rutile is made by reducing ilmenite in a rotary kiln, followed by leaching under various conditions to remove the iron from the reduced ilmenite grains. Activated carbon is a byproduct of this process. Our synthetic rutile has a titanium dioxide content of approximately 89% to 92% and is also considered a TiO2 feedstock material.

Our current mining and beneficiation operations have an annual production capacity of approximately 832,000 metric tons (“MT”) of titanium feedstock, which is comprised of 182,000 MT of rutile and leucoxene, 240,000 MT of synthetic rutile and 410,000 MT of titanium slag. We currently have the capability to produce approximately 297,000 MT of zircon and 250,000 MT of pig iron per year.

Competitive Conditions of Mining and Feedstock Production

Globally, there are a large number of mining companies that mine mineral sand deposits containing ilmenite, as well as zircon. However, there is a smaller number of mining companies that are also involved in upgrading the underlying ilmenite to produce feedstock typically utilized by TiO2 producers.

Pigment producers procure a range of types of feedstocks from multiple feedstock producers to create varying blends of feedstock materials that maximize the efficiency and economic returns of their unique production technique under conditions

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applicable at the time of production. Pigment producers frequently switch the relative amount of each feedstock they procure based on a number of factors including: the relative cost of feedstocks, feedstock logistics costs, the cost of, and availability of, chemicals used to process feedstocks, as well as waste management costs. Hence, there is a high degree of substitutability between and among titanium feedstocks.

Production of TiO2 Pigment

TiO2 pigment is produced using a combination of processes involving the manufacture of base pigment particles through either the chloride or sulfate process followed by surface treatment, drying and milling (collectively known as finishing). Currently, approximately 90% of our TiO2 pigment production capacity is produced using the chloride process and approximately 10% of our TiO2 production capacity is produced using the sulfate process.

We use the sulfate process at our manufacturing facility in Thann, France to produce ultrafine TiO2 products.

In the chloride process, feedstock (slag, synthetic rutile, natural rutile or ilmenite ores) are reacted with chlorine (the chlorination step) and carbon to form TiCl4 in a continuous fluid bed reactor. Purification of TiCl4 to remove impurities is accomplished using selective condensation and distillation processes. The purified TiCl4 is then oxidized in a vapor phase form to produce raw pigment particles and chlorine gas. The latter is recycled back to the chlorination step for reuse. Raw pigment is then typically slurried with water and dispersants prior to entering the finishing step. Due to the nature of the production process, the final pigment product is not sensitive to the feedstocks used to create it, as substantially all substances other than TiO2 are removed during the process. The chloride process currently accounts for substantially all of the industry-wide TiO2 production capacity in North America, and approximately 40% of industry-wide capacity globally.

In the sulfate process, ilmenite and/or slag are dissolved in concentrated sulfuric acid. After removing impurities, dissolved titanium is hydrolyzed and separated from the remaining sulfuric acid. The titanium hydrolysate is subsequently calcined in a rotary kiln to produce a raw TiO2. The product is then further finished in a similar way to TiO2 produced through the chloride process.

Commercial production of TiO2 pigment results in one of two different crystal forms: rutile, which is manufactured using either the chloride process or the sulfate process, or anatase, which is only produced using the sulfate process. Rutile TiO2 is preferred over anatase TiO2 for many of the largest end-use applications, such as coatings and plastics, because its higher refractive index imparts better hiding power at lower quantities than the anatase crystal form and it is more suitable for outdoor use because it is more durable.

The primary raw materials used in the production of chloride TiO2 pigment include titanium feedstock, chlorine and coke. As discussed above, we believe we are unique in the degree to which we produce our own high-grade titanium feedstock. Other chemicals used in the production of TiO2 are purchased from various companies under short and long-term supply contracts. In the past, we have been, and we expect that we will continue to be, successful in obtaining extensions to these and other existing supply contracts prior to their expiration. We expect the raw materials purchased under these contracts, and contracts that we enter into the near term, to meet our requirements over the next several years.

Marketing of TiO2

We supply and market TiO2 under the brand name TIONA® and CristalActiv® to approximately 1,200 customers in approximately 120 countries, including market leaders in each of the key end-use markets for TiO2, and we have supplied each of our top ten customers with TiO2 for more than 10 years. We have implemented a margin stabilization program which we believe provides relative certainty over availability of product and price stability to customers who choose to participate, and have also initiated a long-term partnership strategy that we believe will strengthen the commitments from our customers across all regions and products. The long-term partnership strategy and margin stabilization programs are key parts of our TiO2 marketing and sales strategy, enabling us to focus on predictability and reliability of TiO2 delivery across the supply and demand cycle.

The following sets forth the percentage of our TiO2 sales volume by end-use market for the year ended December 31, 2025:

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In addition to price and product quality, we compete on the basis of technical support and customer service. We sell our products through both a direct sales force and third-party agents and distributors. Our direct sales, marketing and technical service organizations execute our sales and marketing strategy on a global basis. Due to the technical requirements of TiO2 applications, our technical service organization and direct sales offices are supported by a regional customer service staff located in each of our major geographic markets.

Our sales and marketing strategy focuses on aligning ourselves with customers growing faster than the market and effective customer management through the development and maintenance of strong relationships. We develop customer relationships and manage customer contact across multiple contact points within the organization including our sales, technical service and marketing, research and development, and customer service teams. These primary points of contact are supplemented by direct contact with plant operations personnel, supply chain specialists, and senior management. We believe that multiple points of customer contact facilitate efficient problem solving, supply chain support, formula optimization and co-development of products.

Competitive Conditions of TiO2 Pigment

The global market in which our TiO2 pigment business operates is highly competitive. Competition is based on a number of factors such as price, product quality and service. We face competition from both chloride process pigment producers and sulfate process pigment producers. Moreover, because transportation costs are minor relative to the cost of our product, there is also competition between products produced in one region versus products produced in another region.

We face competition from global competitors with headquarters in Europe, the United States and China, including Chemours, LB Group, Kronos Worldwide Inc., and INEOS. In addition, we compete with numerous regional producers particularly in Eastern Europe and China.

Research and Development

We have research and development facilities that aim to develop new products, service our products, and focus on applied research and development of both new and existing processes. The majority of scientists supporting our TiO2 pigment product development and testing are located in Oklahoma City, Oklahoma, USA and Stallingborough, UK, while the majority of scientists supporting our TiO2 ultrafine specialty business are located in Thann, France. In addition, the research and development personnel relating to our mineral sands operations are located in Australia and South Africa. Our research and development initiatives for concentration and separation of REOs is centered in Perth, Australia.

New process developments are focused on increased throughput, efficiency gains and general processing-related improvements for our customers. Ongoing development of process technology contributes to cost reduction, enhanced production flexibility, increased capacity, and improved consistency of product quality. Process technology research also pertains to concentration and separation of monazite into neodymium (Nd), praseodymium (Pr), terbium (Tb), and dysprosium (Dy), the types of REOs that are most in demand for EV and wind turbine applications.

During 2025, we commercialized several new products, including two new products to address both masterbatch and engineering resin markets. We also continued to focus on incorporating long-term sustainable solutions in our TiO2 products with

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the successful implementation of organic substitutions in several new product offerings. Moreover, with the closure of our Botlek pigment plant, we were able to successfully transfer certain technology to our Stallingborough pigment plant which we believe will enable us to maintain and grow our footprint in durable plastic pigment applications. We also continued to utilize our large global footprint by expanding the product capabilities at our Yanbu pigment plant which we believe will be able to efficiently and effectively service a broad array of geographic markets, including Europe.

In addition, we also continued to support our rare earth initiatives which resulted in improvements in the characterization and transformation of raw materials that could be used in the rare earth space. Tronox has also completed a pre-feasibility study with respect to the development of a rare earth "cracking and leaching" facility. Further development of this facility is expected to be conducted in 2026.

Patents, Trademarks, Trade Secrets and Other Intellectual Property Rights

Protection of our proprietary intellectual property is important to our business. At December 31, 2025, we held 67 patents and 3 patent applications in the U.S., and approximately 470 in foreign counterparts, including both issued patents and pending patent applications. Our U.S. patents have expiration dates ranging through 2043. Additionally, we have 11 trademark registrations in the U.S. and 3 trademark applications in the U.S., as well as 316 trademark counterpart registrations and applications in foreign jurisdictions.

We also rely upon our unpatented proprietary technology, know-how and other trade secrets. The substantial majority of our patents and trade secrets relate to our chloride products, surface treatments, chlorination expertise, and oxidation process technology, and this proprietary chloride production technology is an important part of our overall technology position. However, much of the fundamental intellectual property associated with both chloride and sulfate pigment production is no longer subject to patent protection. At Namakwa Sands, we rely on intellectual property for our smelting technology, which was granted to us in perpetuity by Anglo American South Africa Limited for use on a worldwide basis, pursuant to a non-exclusive license.

While certain of our patents relating to our products and production processes are important to our long-term success, more important is the operational knowledge we possess. We also use and rely upon unpatented proprietary knowledge, continuing technological innovation and other trade secrets to develop and maintain our competitive position. We conduct research activities and protect the confidentiality of our trade secrets through reasonable measures, including confidentiality agreements and security procedures. We protect the trademarks that we use in connection with the products we manufacture and sell, and have developed value in connection with our long-term use of our trademarks. See “Risk Factors—If our intellectual property were compromised or copied by competitors, or if competitors were to develop similar intellectual property, our results of operations could be negatively affected. Further, third parties may claim that we infringe on their intellectual property rights which could result in costly litigation."

Human Capital

Tronox employs approximately 5,700 people across six continents, and we believe it is our rich diversity and exceptional operational and technical expertise that, combined with our vertical integration model, position Tronox as the world's leading vertically integrated manufacturer of titanium dioxide pigment. Recognizing the importance of our human capital, one of our core strategies is to foster a high-performance culture in which we strive for zero harm and operational excellence, while harnessing technology and encouraging innovation to create value, all while empowering our people. In addition, we have placed a priority around developing leaders who will help us effectively (i) acquire, develop and nurture our talent, and (ii) foster a culture that embodies the values that are important to us, starting with safety and operating our business responsibly.

People

Because we operate both titanium ore mines and titanium dioxide pigment plants, and because our operations span the world, we require specialty skills in mining and TiO2 pigment manufacturing. We also need people who are willing to learn skills across both mining and chemicals operations and who can help us extract value from our integrated model. The below map sets forth the approximate number of employees in each of the global regions in which we operate.

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In January 2026, the Company announced its intent to permanently close its TiO2 plant in Fuzhou, China which will impact approximately 550 employees in that region.

Accordingly, we place a high priority on knowledge transfer, including, but not limited to, by relocating skilled leaders across countries and between mining and TiO2 pigment operations, by staffing high-potential employees in regions on global projects, and by enabling collaboration in global centers of excellence). We are committed to creating an organization where leaders encourage a diverse workforce, where people feel valued and respected, have access to opportunities, and in which a variety of different voices are encouraged and heard. For instance, during 2025, we focused our efforts on inclusion through developing learning opportunities and surveying our employees. In addition, in 2025, we focused on, among other things, promoting women in STEM and celebrating our different cultures through local events.

We also place an uncompromising focus on operating safe, reliable, and responsible facilities, and we measure our progress with both safety metrics and leading indicators. We believe every employee and contractor has a responsibility for safety, and we proactively identify and manage risk, conduct ourselves responsibly, exercise good judgment, and take accountability for our actions. In 2025, our employees worked approximately 11 million hours with 11 recordable injuries and no fatalities from our operations, and our contractors worked approximately 12 million hours with 16 recordable injuries and no fatalities from our operations.

Culture

We aim to create an organizational culture where employees unleash their full value through living our values, and fostering a high-performance culture. In 2025, we developed a program, Living our Values, which we expect to launch in 2026. Through this program, employees will learn how they can live our values in everything they do. In addition, such program will emphasize employees working with a Growth Mindset where we believe everyone can improve, feedback is a gift, and challenges are an opportunity to learn. We believe we can have the most success fostering a high performance culture by setting high expectations for each other and modelling ways of work done well, enrolling our people into fulfilling our vision and strategy, and investing in the success and fulfillment of our people.

Today, we are a collaborative group of people who naturally want to be helpful to others, and we adjust our own efforts to make our colleagues’ work easier, however we can.

We have adopted a set of core values that describes our expectations of one another, starting with safety. Every performance review starts with a self-assessment and manager’s assessment of our consistency in living our values. Employees are encouraged – and provided a toolkit – to develop in the values where they are weak, and to help coach others in the values where they are strong.

Tronox Core Values

•We have an uncompromising focus on operating safe, reliable and responsible facilities.

•We honor our responsibility to create value for stakeholders.

•We treat others with respect, and act with personal and organizational integrity.

•We build our organization with diverse, talented people who make a positive difference and we invest in their success.

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•We are adaptable, decisive and effective.

•We are trustworthy and reliable, and we build mutually rewarding relationships.

•We share accountability, and have high expectations for ourselves and one another.

•We do the right work the right way in every aspect of our business.

•We celebrate the joy of working together to accomplish great things.

Capabilities

At Tronox we lead with safety. To ensure we live this value with impact, a key focus of our strategy is to drive risk reduction with an updated safety program focused on leading indicators. This program is intended to help find areas for the Company to make improvements and make our business safer with initiatives that would not be accomplished otherwise. In 2025, we completed numerous projects aimed at reducing risk and increasing workplace pride which we believe will make our operations safer.

In addition, our employees are further guided by our code of conduct and business ethics and we conduct annual global training to help them fully understand and comply with our code of conduct.

We also have a rigorous succession planning process with respect to key positions throughout the organization. We believe such process allows us to proactively develop the talent of the future and allows us to move with speed and agility when leadership changes are required. As part of the succession planning process, high potential leaders are identified and development plans are completed for each candidate.

Sustainability

Our business requires an unwavering focus on sustainable operating practices, and our commitment to sustainability supports our overall vision to be the leader in shaping a sustainable, thriving world through enriched and refined minerals and a key pillar of our strategy to be the benchmark for sustainability. As such, we integrate sustainability into every aspect of our business—from our culture and our strategy to our operating practices. We believe sustainable operations enable us to better control costs and manage our environmental footprint. Sustainability also encompasses providing our employees with a safe, diverse workplace and offering them opportunities to grow and develop. Ultimately, safe, environmentally sustainable operations demonstrates our respect for our communities and supports our continued privilege to operate.

Our sustainability efforts are also focused on reducing Tronox’s carbon footprint. Our detailed and actionable roadmap for reducing carbon emissions in the short-, medium- and long-term demonstrates Tronox’s commitment to mitigating the impact of climate change. Our roadmap covers 100% of our operations and is based on a thorough analysis of our carbon footprint and step-by-step plans to reduce it. The majority of our greenhouse gas ("GHG") emissions are generated from our TiO2 slag furnaces in South Africa, synthetic rutile kiln in Western Australia, and TiO2 pigment plants in the United States, United Kingdom, France, Brazil, Australia, and the Kingdom of Saudi Arabia.

We are proud that we achieved our previously announced target to reduce Scope 1 and Scope 2 emission intensity 25% by the end of 2025 against a 2019 baseline. In addition, we are continuing to actively progress GHG reduction plans to enable us to achieve our target of a 50% reduction by the end of 2030 also against a 2019 baseline. During 2025, we were able to realize the full benefits of the 200 MW solar energy project in South Africa which contributed to approximately 40% of our South African electricity needs. The project is expected to reduce Tronox's global Scope 1 and 2 emissions by approximately 13%. In addition, in June 2024, we announced a second large-scale renewable energy project in South Africa that is expected to be fully operational by the end of 2027. Upon completion of such project, the Company expects that approximately 70% of its South African needs will be satisfied by renewable energy. It remains our long-term goal to achieve "net zero" carbon emissions by 2050. We believe the Company's dedication to these significant renewable energy projects are just two examples of how Tronox is committed to being a leader when it comes to corporate sustainability and protection of the environment.

Environmental, Health and Safety Authorizations

Mining

Our facilities and operations are subject to extensive general and industry-specific environmental, health and safety regulations in jurisdictions where we operate, but particularly South Africa and Australia. These regulations include those relating to mine rehabilitation, liability provision, water management, the handling and disposal of hazardous and non-hazardous materials, and occupational health and safety. The various legislation and regulations are subject to a number of internal and external audits. We believe our mineral sands operations are in compliance, in all material respects, with existing health, safety and environmental legislation and regulations.

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Regulation of the Mining Industry in South Africa

The South African mining regulatory regime is comprehensive and requires regular reporting to applicable government departments. A failure to, among other things, comply with any such reporting requirements or the conditions of any mining license could result in extended mandatory shutdown periods, license and/or mining right suspensions or revocations all of which could impact our business.

In South Africa, the primary legislative enactments with which our mines are required to comply are the Mineral and Petroleum Resources Development Act (“MPRDA”) which governs the acquisition and retention of prospecting and mining rights. In addition, the Mine Health and Safety Act governs the manner in which mining must be conducted from a health and safety perspective, while the National Environmental Management Act (and its subsidiary legislation) provides the underlying framework with respect to environmental rules and regulation for which our operations must comply. For additional details regarding other South African legislative enactments that govern our mining licenses please see the section entitled “Risk Factors” set forth elsewhere in this Form 10-K.

Regulation of the Mining Industry in Australia

Each Australian state and territory has its own legislation regulating the exploration for and mining of minerals. Our key exploration and mining operations are regulated by the Mining Act 1978 (WA), the Mining Act 1992 (NSW) and their related regulations.

In Western Australia, State Agreements are contracts between the State and the proponents of major resources projects within Western Australia, and are intended to foster resource development and related infrastructure investments. These agreements are approved and ratified by the Parliament of Western Australia. The State Agreement relevant to the development of certain of our Western Australian operations is the agreement authorized by the Mineral Sands (Cooljarloo) Mining and Processing Agreement Act 1988 (WA). This agreement concluded in March 2020 and Tronox's rights and obligations are now covered by the Western Australian Mining Act.

Regulation of Finished Product Manufacturing

Our business is subject to extensive regulation by federal, state, local and foreign governments. Governmental authorities regulate the generation and treatment of waste and air emissions at our operations and facilities. At many of our operations, we also comply with worldwide, voluntary standards developed by the International Organization for Standardization (“ISO”), a nongovernmental organization that promotes the development of standards and serves as a bridging organization for quality and environmental standards, such as ISO 9002 for quality management and ISO 14001 for environmental management.

Chemical Registration

As a chemical manufacturer with global operations, we are subject to a wide array of regulations regarding the import, export, labelling, use, storage and disposal of our products. We are obliged to comply with the regulation of chemical substances and inventories under the Toxic Substances Control Act in the United States and the Registration, Evaluation and Authorization of Chemicals (“REACH”) regulation in Europe, as well as a growing list of analogous regimes in other parts of the world, including China, South Korea and Taiwan. Manufacturers and importers of chemical substances must register information regarding the properties of their existing chemical substances with the European Chemicals Agency (“ECHA”). REACH regulations require chemical substances which are newly imported or manufactured in the EU to be registered before being placed on the market, assessed for human health or environmental risk and for registrations to be updated periodically such as when new information emerges relevant to human health or environmental risks associated with the production or use of the substance. For additional information on this topic, see section entitled "Risk Factors - Risks Relating to our Legal and Regulatory Environment - Our TiO2 products are subject to increased regulatory scrutiny that may impede or inhibit widespread usage of TiO2 and / or diminish the Company's ability to sustain or grow its business or may add significant costs of doing business."

Greenhouse Gas Regulation

Globally, our operations are subject to regulations that seek to reduce emissions of GHGs. We currently report and manage GHG emissions as required by law for sites located in jurisdictions requiring such managing and reporting of GHGs, primarily the European Union, United Kingdom and Australia. For additional information on this topic, see section entitled “Risk Factors – Risks Relating to our Legal and Regulatory Environment - Sustainability issues as they may be applicable in certain jurisdictions, including those related to climate change, may subject us to additional costs and restrictions, including increased energy and raw material costs, which could have an adverse effect on our business, financial condition and results of operations, as well as damage our reputation.”

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Available Information

Our public internet site is http://www.tronox.com. The content of our internet site is available for information purposes only and is included as an inactive textual reference. It should not be relied upon for investment purposes, nor is it incorporated by reference into this annual report on Form 10-K unless expressly noted. We make available, free of charge, on or through the investor relations section of our internet site, our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, proxy statements and Forms 3, 4 and 5 filed on behalf of directors and executive officers, as well as any amendments to those reports filed or furnished pursuant to the U.S. Securities and Exchange Act of 1934, as amended (the “Exchange Act”) as soon as reasonably practicable after we electronically file such material with, or furnish it to, the U.S. Securities and Exchange Commission (the “SEC”).

We file current, annual and quarterly reports, proxy statements and other information required by the Exchange Act with the SEC. Our SEC filings are also available to the public from the SEC’s internet site at http://www.sec.gov. The content of the SEC's internet site is available for informational purposes only and is included as an inactive textual reference. It should not be relied upon for investment purposes, nor is it incorporated by reference into this annual report on Form 10-K unless expressly noted.