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TREX US Equity

Trex Co IncMaterials · Lumber & Wood Products (No Furniture) · CIK 1069878 · FY ends Dec 31
$46.83
-0.47 (-0.99%)
USD · as of 2026-08-21 · marketstack

TREX · 10-K · period ended 2025-12-31

← all TREX documents
filed 2026-02-25 · EDGAR original ↗

Our rendering of the filing — original pagination and typography are not reproduced, and tables are reduced to their short label cells (the figures live on FA). Nothing is summarized: every line below is the filing's own text.

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10-K

Table of Contents

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-K

(Mark One)

For the fiscal year ended December 31, 2025

For the transition period from to

Commission file number: 001-14649

Trex Company, Inc.

(Exact name of registrant as specified in its charter)

(Address of principal executive offices) (Zip Code)

(540) 542-6300

Registrant’s telephone number, including area code:

Securities registered pursuant to Section 12(b) of the Act:

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common stock TREX New York Stock Exchange

Securities registered pursuant to Section 12(g) of the Act:

None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes☒ No☐

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes☐ No☒

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes☒ No☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes☒ No☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “an emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer ☒ Accelerated filer ☐

Non-accelerated filer ☐ Smaller reporting company ☐

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act ☐

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☒

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements. ☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b). ☐

Indicate by check mark whether the registrant is a shell Company (as defined in Rule 12b-2 of the Exchange Act). Yes☐ No☒

The aggregate market value of the registrant’s common equity held by non-affiliates of the registrant at June 30, 2025, which was the last business day of the registrant’s most recently completed second fiscal quarter, was approximately $5.8 billion based on the closing price of the common stock as reported on the New York Stock Exchange on such date and assuming, for purposes of this computation only, that the registrant’s directors, executive officers and beneficial owners of 10% or more of the registrant’s common stock are affiliates.

The number of shares of the registrant’s common stock outstanding on February 5, 2026 was 105,737,365.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the following documents are incorporated by reference in this Form 10-K as indicated herein:

Document Part of 10-K into which incorporated

Table of Contents

TABLE OF CONTENTS

Page

PART I

Item 1. Business 1

Item 1A. Risk Factors 10

Item 1B. Unresolved Staff Comments 20

Item 1C. Cybersecurity 20

Item 2. Properties 22

Item 3. Legal Proceedings 22

Item 4. Mine Safety Disclosures 22

PART II

Item 6. Reserved 24

Item 7A. Quantitative and Qualitative Disclosures About Market Risk 35

Item 8. Financial Statements and Supplementary Data 36

Item 9A. Controls and Procedures 36

Item 9B. Other Information 39

Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections 39

PART III

Item 10. Directors, Executive Officers and Corporate Governance 40

Item 11. Executive Compensation 40

Item 14. Principal Accounting Fees and Services 40

PART IV

Item 15. Exhibits and Financial Statement Schedules 41

Index to Consolidated Financial Statements F-1

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NOTE ON FORWARD-LOOKING STATEMENTS

This report, including the information it incorporates by reference, contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. We intend our forward-looking statements to be covered by the safe harbor provisions for forward-looking statements in these sections. All statements regarding our expected financial position and operating results, our business strategy, our financing plans, forecasted demographic and economic trends relating to our industry and similar matters are forward-looking statements. These statements can sometimes be identified by our use of forward-looking words such as “believe,” “may,” “will,” “anticipate,” “estimate,” “expect,” “intend” or similar expressions. We cannot promise you that our expectations in such forward-looking statements will turn out to be correct. Our actual results could be materially different from our expectations because of various factors, including the factors discussed under “Item 1A. Risk Factors” in this report.

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PART I

Some of the information contained in this report concerning the markets and industry in which we operate is derived from publicly available information and from industry sources. Although we believe that this publicly available information and the information provided by these industry sources are reliable, we have not independently verified the accuracy of any of this information.

Item 1. Business

General

Trex Company, Inc. (Trex, Company, we, us or our), was incorporated as a Delaware corporation in 1998. The Company is the world’s largest manufacturer of composite decking and railing products, which are marketed under the brand name Trex® and manufactured in the United States. Our principal executive offices are located at 2500 Trex Way, Winchester, Virginia 22601, and our telephone number at that address is (540) 542-6300.

Business and Growth Strategies

More than 30 years ago, Trex invented the composite decking category. Today, Trex continues to reinvent and redefine outdoor living with a commitment to innovation and growth that has made Trex the world’s #1 brand of sustainably made wood-alternative decking and deck railing, along with a comprehensive portfolio of sustainable, high performance, low-maintenance outdoor living products including fencing, cladding, fasteners, and outdoor lighting. Helping homeowners design outdoor spaces that reflect their individual styles and budgets, coupled with Performance- EngineeredTM products at various price points makes Trex the leading brand for homeowners seeking to invest in their outdoor living spaces. Trex’s ability to leverage strong brand awareness and a product offering with the advantages of sustainability, low-maintenance, and durability to help fuel conversion from wood decking and railing to Trex positions our Company well within the large and expanding Outdoor Living market.

Key to Trex’s leadership and growth is the strength of the Trex brand. Marketing investments focused on homeowners’ needs and wants continued to drive brand awareness to its highest level in a decade, with Trex consistently being the leading brand in both unaided and aided brand recognition, while products for every price point help drive profitable growth and wood conversion. Brand strength coupled with an unparalleled distribution and pro-channel dealer network and a leading brand presence at major home improvement retailers ensures that homeowners can find Trex products wherever and whenever they choose.

As the inventor of composite decking, Trex is known for delivering innovative products leveraging the proprietary and skill-based advantages in our eco-friendly manufacturing process. We continue to extract value from the materials by broadening our material streams, implementing new material processes, and developing the next generation of low-cost materials. Our growth and margin expansion strategy positions us well to expand our leadership position in the category with beautiful, high performance, low-maintenance products and includes the following initiatives:

Accelerate material conversion from wood and inferior wood alternative products

Increase system attachment rates, particularly in railing

Grow the decking category with sustainable, high-performance innovation

Modernize our digital experience to improve customer demand conversion

Invest in talent and organizational capability

Leverage best in class service levels to increase distribution and retail footprint

Pursue strategic value accretive acquisitions that expand our market by introducing new products that are innovative, eco-friendly, and durable

Products

Operations and Products: The Company operates in one reportable segment.

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Trex is the world’s largest manufacturer of high-performance, low-maintenance, eco-friendly wood-alternative composite decking and railing and a leader in outdoor living products, with more than 30 years of product experience. Trex products are marketed under the brand name Trex® and manufactured in the United States. Stocked in more than 6,700 retail locations worldwide, Trex offers a comprehensive set of aesthetically appealing and durable, low-maintenance product offerings in the decking, railing, fencing, cladding and outdoor lighting categories. A majority of the products are eco-friendly and leverage recycled and reclaimed materials to the extent possible. Trex decking is made in a proprietary process that combines reclaimed wood fibers and recycled polyethylene film, making Trex one of the largest recyclers of waste polyethylene plastic film in North America. Our composite deck boards do not rot, warp, or splinter and the versatile colors feature a refined wood grain that adds depth and luxury to any backyard. Trex products are sold to distributors and home centers for final resale primarily to the residential market.

Trex offers the following products:

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Trex products offer a number of significant aesthetic advantages over wood while eliminating many of wood’s major functional disadvantages, which include warping, splitting, and other damage from moisture. In addition to resisting fading and surface staining, Trex products require no sanding, staining, or sealing, resist moisture damage, provide a splinter-free surface and do not require chemical treatment against rot or insect infestation. Special characteristics (including resistance to splitting, the ability to bend, and ease and consistency of machining and finishing) facilitate installation, reduce contractor call-backs, and afford consumers a wide range of design options. Combined, these aspects yield significant aesthetic advantages and lower maintenance than wood decking and railing and ultimately render Trex products less costly than wood over the life of the deck.

We have received product building code listings from the major U.S. building code listing agencies for decking and railing and from the major Canadian building code listing agency for decking. The listings facilitate the acquisition of building permits by deck builders and promote consumer and industry acceptance of our products as an alternative to wood decking.

We are a licensor in a number of licensing agreements with third parties to manufacture and sell products under the Trex trademark. Our licensed products are:

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Customers and Distribution

We are committed to conducting business activities with the highest standards of business ethics and in accordance with all applicable laws and regulations. Our Vendor and Customer Code of Conduct and Ethics (Code), available at www.trex.com/our-company, applies to all parties providing goods and services to the Company, and all channel partners who distribute, sell and/or install our products (collectively, Business Partners). We expect all Business Partners, and all of their employees, agents and subcontractors to follow our high ethical standards set forth in the Code while they are conducting business with us or on our behalf. In addition, we expect our Business Partners to understand and comply with the Trex Company Code of Conduct and Ethics, available at www.trex.com/our-company, to do business with Business Partners who share the same commitment to human rights that we have and as set forth in our Human Rights Policy, available at www.trex.com/our-company.

Wholesale Distributors/Retail Lumber Dealers. We generate most of our sales for our composite decking and railing products through our wholesale distribution network by selling Trex products to wholesale distributors, who in turn, sell our products to retail lumber outlets. These retail dealers market to both homeowners and contractors, but they emphasize sales to professional contractors, remodelers, and homebuilders. Contractor-installed decks generally are larger installations with professional craftsmanship. Our retail dealers generally provide sales personnel trained in Trex products, contractor training, inventory commitment, and point-of-sale display support. We believe that attracting wholesale distributors, who are committed to our products and marketing approach and can effectively sell higher value products to contractor-oriented lumber yards and other retail outlets, is important to our future growth. Our distributors provide value-added service in marketing our products because they sell premium wood decking products and other innovative building materials that typically require product training and personal selling efforts. We typically appoint two to three distributors within a specified area to sell only Trex decking products on an exclusive basis. The distributor purchases our products at prices in effect at the time we ship the product to the distributor.

Home Centers. We sell our products through Home Depot and Lowe’s stores. Home Depot and Lowe’s purchase products directly from us for stocking on their shelves. They also purchase product through our wholesale distributors for special orders placed by consumers. Home Depot and Lowe’s serve both the contractor market and the “do-it-yourself” market. We believe that brand exposure through Home Depot and Lowe’s promotes consumer acceptance of our products.

For the years ended December 31, 2025, 2024, and 2023, three customers represented approximately 73%, 81%, and 72%, respectively, of the Company’s total net sales. No other customer represented 10% or more of the Company’s total net sales.

Manufacturing Process

Products manufactured at our facilities in Virginia and Nevada are primarily manufactured from reclaimed wood fiber and scrap polyethylene. Our primary manufacturing process for the products involves mixing wood particles with plastic, heating and then extruding, or forcing, the highly viscous and abrasive material through a profile die. We use many proprietary and skill-based advantages in our eco-friendly manufacturing process. We use Six Sigma and Lean Manufacturing methodologies throughout our Company within our plant operations and in the planning and execution of certain projects.

Our manufacturing processes require significant capital investment, expertise, and time to develop. We have continuously invested the capital necessary to expand our manufacturing throughput and improve our manufacturing processes.

In October 2021, the Company announced plans to add a third manufacturing facility located in Little Rock, Arkansas (Little Rock), that will sit on approximately 300 acres of land. Construction began on the new facility in 2022. The development approach for the new campus has been modular and calibrated to demand trends for Trex Outdoor Living Products. During 2025, scrap polyethylene processing began at this facility. Decking production at this facility is expected to begin in 2027.

In addition, we prioritize cost reduction projects and continuous improvement opportunities, primarily related to automation, modernization, energy efficiency, and raw material processing, and remain focused on innovation and new product development. We have also broadened the range of raw materials that we can use to produce a consistent and high-quality finished product. In connection with national building code listings, we maintain a quality control testing program.

Suppliers

We conduct supply chain assessments when considered necessary in relation to the significance of the purchase and business opportunity for the Company. Assessments include in-person reviews and tours of operating facilities. The Company is committed to conducting business activities with the highest standards of business ethics and in accordance with all applicable laws and regulations. As stated above, our Vendor and Customer Code of Conduct and Ethics, our Company Code of Conduct and Ethics, and our Human Rights Policy apply to all suppliers of the Company.

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The production of most of our decking products requires a supply of reclaimed wood fiber and scrap polyethylene. We fulfill requirements for raw materials under both purchase orders and supply contracts. In the year ended December 31, 2025, we purchased our reclaimed wood fiber requirements under purchase orders and long-term supply commitments. All of our polyethylene purchases are under short-term supply contracts that generally have a term of approximately one year for which pricing is negotiated as needed, or under purchase orders that do not involve long-term supply commitments.

Reclaimed Wood Fiber: Most of our reclaimed wood supply originates in North America through relationships with cabinet makers, wood flooring manufacturers, sawmills, lumberyards and other entities that generate and collect wood byproducts in their operations. In addition, we purchase scrap select wood chips generated from various farming operations. If the reclaimed wood fiber meets our specifications, our reclaimed wood fiber supply agreements generally require us to purchase at least a specified minimum and at most a specified maximum amount of reclaimed wood fiber. Depending on our needs, the amount of reclaimed wood fiber that we actually purchase within the specified range under any supply agreement may vary significantly from year to year.

Scrap Polyethylene: The polyethylene we consume is primarily composed of scrap plastic film and plastic bags. We will continue to seek to meet our future needs for scrap polyethylene from the expansion of our existing supply sources and the development of new sources. We believe our use of multiple sources provides us with a cost advantage and facilitates an environmentally responsible approach to our procurement of polyethylene. Our ability to source and use a wide variety of polyethylene from third party distribution and manufacturing operations is important to our cost strategy. We maintain this ability through the continued expansion of our plastic reprocessing operations in combination with the advancement of our proprietary material preparation and extrusion processes.

In addition, we outsource the production of certain products to third-party manufacturers.

Training

Trex University is our state-of-the-art training facility located near our Virginia manufacturing plant designed to educate and train retailers, contractors and other partners on the benefits of Trex aesthetically pleasing, high-performance, low-maintenance, eco-friendly outdoor living products. In addition, Trex Academy is an online multimedia content hub dedicated to helping the Trex Do-It-Yourself customer bring their deck dreams to life by providing how-to content.

Competition

Our primary competition for our composite decking and railing products consists of wood products, which constitute a substantial majority of decking and railing sales, as measured by linear feet of lumber. Many of the conventional lumber suppliers with which we compete have established ties to the building and construction industry and have well-accepted products. A majority of the lumber used in wood decks is pressure-treated lumber. Southern yellow pine and fir have a porosity that readily allows the chemicals used in the pressure treating process to be absorbed. The same porosity makes southern yellow pine susceptible to absorbing moisture, which causes the lumber to warp, crack, splinter and expel fasteners. In addition to pine and fir, other wood materials used for decking include redwood, cedar, and tropical hardwoods such as ipe, teak, and mahogany. While these products are often significantly more expensive than pressure-treated lumber, they do not eliminate key disadvantages associated with wood, including susceptibility to weathering, fading, biological deterioration, insect damage, splinters, and the need for ongoing maintenance such as sanding, staining, and sealing.

In addition to wood, we also compete with other manufacturers of wood-alternative products. Industry studies indicate that we have the leading market share of the wood-alternative segment of the decking and railing market. Our principal competitors include Azek (a division of James Hardie Industries PLC), Deckorators (a division of UFP Industries, Inc.), and Fiberon (a division of Fortune Brands, Inc.).

Our ability to compete depends, in part, on a number of factors outside our control, including the ability of our competitors to develop new wood-alternative decking and railing products that are competitive with our products. We believe that the principal competitive factors in the decking and railing market include product quality, price, aesthetics, maintenance cost, distribution, brand strength, and warranties. We believe we compete favorably with respect to these factors. We believe that our products offer aesthetic and cost advantages over the life of a deck when compared to other types of decking and railing materials. Although a contractor-installed deck built with Trex products using a pressure-treated wood substructure generally costs more than a deck made entirely from pressure-treated wood, Trex products are low maintenance compared to the on-going maintenance required for a pressure-treated deck and are therefore, less costly over the life of the deck. We believe that our manufacturing process and utilization of relatively low-cost raw material sources provide us with a competitive cost advantage relative to other manufacturers of wood-alternative decking and railing products. The scale of our operations also confers cost efficiencies in manufacturing, sales and marketing.

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Seasonality

Our operating results have historically varied from quarter to quarter. Seasonal, erratic or prolonged adverse weather conditions may reduce the level of home improvement and construction activity and can shift demand for our products to a later period. As part of its normal business practice and consistent with industry practice, Trex has historically offered incentive programs to its distributors and dealers to build inventory levels before the start of the prime deck-building season in order to ensure adequate availability of its product to meet anticipated seasonal consumer demand. The seasonal effects are often offset by the positive effect of the incentive programs.

Government Regulation

Our business activities are subject to various federal, state and local laws and regulations. Costs and accruals incurred to comply with these governmental regulations are presently not material to our capital expenditures, results of operations and competitive position. Although there is no assurance that existing or future government laws applicable to our operations or products will not have a material adverse effect on our capital expenditures, results of operations and competitive position, we do not currently anticipate material expenditures for government regulations.

We are also subject to federal, state and local environmental regulation. The emissions of particulates and other substances from our manufacturing facilities must meet federal and state air quality standards implemented through air permits issued to us by the Department of Environmental Quality of the Commonwealth of Virginia, the Division of Environmental Protection of Nevada’s Department of Conservation and Natural Resources, and the Division of Environmental Quality of Arkansas’ Department of Energy and Environment. Our facilities are regulated by federal and state laws governing the disposal of solid waste and by state and local permits and requirements with respect to wastewater and storm water discharge. Compliance with environmental laws and regulations has not had a material adverse effect on our business, operating results or financial condition.

Our operations also are subject to workplace safety regulation by the U.S. Occupational Safety and Health Administration, the Commonwealth of Virginia, and the States of Nevada and Arkansas. Our compliance efforts include safety awareness and training programs for our production and maintenance employees.

Intellectual Property

Our success depends, in part, upon our intellectual property rights relating to our products, production processes and other operations. We rely upon a combination of trade secret, nondisclosure and other contractual arrangements, and patent, copyright and trademark laws, to protect our proprietary rights. We have made substantial investments in manufacturing process improvements that have enabled us to increase manufacturing line production rates, facilitate our development of new products, and produce improvements in our existing products’ dimensional consistency, surface texture and color uniformity.

Intellectual property rights may be challenged by third parties and may not exclude competitors from using the same or similar technologies, brands or works. We seek to secure effective rights for our intellectual property but cannot provide assurance that third parties will not successfully challenge, or avoid infringing, our intellectual property rights.

We consider our trademarks to be of material importance to our business plans. The U.S. Patent and Trademark Office has granted us federal registrations for many of our trademarks. Federal registration of trademarks is effective for as long as we continue to use the trademarks and renew their registrations. We do not generally register any of our copyrights with the U.S. Copyright Office but rely on the protection afforded to such copyrights by the U.S. Copyright Act. This law provides protection to authors of original works, whether published or unpublished, and whether registered or unregistered.

We have two current U.S. Patents for decking technology. We intend to maintain our existing patents in effect until they expire on January 15, 2038 and May 23, 2038, respectively, as well as to seek additional patents as we consider appropriate.

We enter into confidentiality agreements with our employees and limit access to and distribution of our proprietary information. If it is necessary to disclose proprietary information to third parties for business reasons, we require that such third parties sign a confidentiality agreement prior to any disclosure.

Human Capital

Overview As of December 31, 2025, Trex employed 1,839 full-time employees. Our people are what have fueled our growth as the world’s #1 brand of sustainably made, wood-alternative decking and deck railing for nearly three decades. As we look to the future, Trex is poised for growth and innovation and that growth is dependent upon our people’s talent and commitment. We continue

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to invest in our people as we execute on our strategic talent management plan which aims to support our employees in gaining the competencies needed to advance and enjoy long-lasting careers at Trex.

Pay Equity As an equal opportunity employer, Trex believes in compensating our people fairly and without discrimination — regardless of gender, race, or any protected characteristic. Our strong reputation as an industry leader is built on consistently offering competitive hourly wages, salaries, and total compensation packages.

To ensure pay parity for similar roles, we use a structured compensation-grade system that defines objective pay ranges before we evaluate any candidate. For some roles, we supplement this approach with targeted market studies to confirm our compensation remains competitive, aligned with market benchmarks, and internally equitable. We review total rewards regularly to support our efforts to attract and retain top talent.

Each period, we benchmark our pay ranges against industry standards and update our compensation structure to remain market competitive. Annually, we benchmark hourly wages in our local markets, participate in industry salary surveys, and analyze relevant results to keep our hourly pay competitive. We also undertake regular pay-equivalence analyses to detect any unintended gaps. These analyses focus primarily on our salaried staff because our hourly wages are standardized by role.

In 2025, we refined our pay-mix philosophy to provide managers with more flexibility — enabling the creation of total compensation packages tailored to meet employee needs, while remaining fair and equitable. Our commitment to fair pay and humane working conditions is also enshrined in our broader Human Rights Policy — which underscores how we conduct business and treat our people. The policy is publicly available at (www.trex.com/our-company).

Development and Recruiting Developing internal talent is another key multi-year infrastructure investment for Trex. To help support our strategic talent development, we continue to invest in enabling tools, systems, and training to strengthen our decision making and accelerate progress. This includes new training for managers in the areas of team development, performance reviews, and recognition.

In addition, the Trex Leadership Academy, a 12-month program, continues to develop and refine the competencies and leadership skills of high potential team members. Trex’s tuition reimbursement policy assists team members in achieving their full potential by furthering their education, affording them opportunities to grow their skills set and favorably impact the business. Safety remains a core value at Trex and in 2024 hourly manufacturing onboarding was modified to include more time for new team members to learn the process and incorporate additional safety best practices which has resulted in improved safety and retention outcomes.

While significant investments have been made in internal development, recruiting outside talent continues to infuse the Company with new and diverse perspectives. Our summer intern program continues to grow and welcomes students from both universities and vocational schools across the mid-Atlantic. This program along with campus recruitment has created a pipeline of young talent, while we also continue to attract some of the most talented senior leaders from around the country to fill key leadership positions.

Engagement and Culture We continue to invest in employee engagement and related action planning by conducting Gallup surveys. Our people managers use the results to develop specific action plans to drive engagement throughout our organization. We also evolved our approach to curation of culture, providing training through an internal trainer to hourly employees in addition to leaders. This multi-year roll out of culture training targets all Trex team members to create shared understanding and expectations. Additionally, we conducted our first Spanish language cultural training for our Spanish speaking employees.

Trex is committed to building a workforce that is reflective of the communities in which we operate. Embracing diverse perspectives and fostering a culture of inclusion and belonging are at the core of what has fueled Trex’s legacy of innovation. We continue to find new ways to increase opportunities for underrepresented team members, including partnering with local agencies to provide employment opportunities to neuro-diverse candidates.

At Trex, our people fuel our growth and innovation. We are committed to reinvesting in our team and executing our strategic talent management plan at the highest level.

Corporate Governance

Information related to the Company’s governance and related activities and programs may be found in the Company’s Definitive Proxy Statement filed on March 24, 2025 in Schedule 14A. Also, a copy of the Company’s Code of Conduct and Ethics (Code) is maintained on the Company’s web site at www.trex.com/our-company/corporate-governance/. The Company has a whistle-blowing policy included in its Code that encourages reporting by employees of activities the employee considers illegal or dishonest. Each employee is notified of the whistle-blower policy and a toll-free hotline is provided for reporting issues directly to the Board of Directors and the Company’s Senior Vice President, Chief Legal Officer and Secretary.

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Environmental and Occupational Safety

Environmental

The Company has been committed to sustainability since our inception more than 30 years ago, creating eco-friendly products from reclaimed and recycled materials. Trex’s high-performance, low-maintenance composite decking is made from 95% recycled and reclaimed materials. The Company’s commitment to improving our environmental footprint includes developing and offering more sustainable products to the market as well as advancing sustainability and efficiency in our operations. From continuous improvement in our manufacturing practices that reduce the use of energy to making products using industry leading high levels of reclaimed and recycled materials, the Company is able to improve the use of resources, greenhouse gas emissions, and waste streams. The foundation for our commitment to sustainability includes, but is not limited to:

Using recycled, reclaimed and other waste resources whenever possible in our manufacturing process;

Preventing pollution by maintaining environmental management as a core value;

Reducing waste generated in our manufacturing and business operations;

Developing and using environmentally acceptable, safe and efficient production methods; and

Identifying and complying with all legal and statutory requirements.

Our Environmental Policy, located on our web site at www.trex.com/our-company, outlines our commitment to conducting business in an ethical and socially responsible manner that respects the environment.

The Nominating / Corporate Governance Committee of the Board of Directors oversees the Company’s sustainability matters that are significant to the Company. Periodically, the Committee reviews the Company’s sustainability strategy, initiatives and policies and receives updates from the Senior Vice President, Chief Legal Officer and Secretary, who oversees the Company’s sustainability initiatives. Also, environmental matters relevant to the Company’s operations are the responsibility of the President and Chief Executive Officer, the Executive Vice President and Chief Operating Officer, and the Senior Vice President and Chief Financial Officer.

Trex’s manufacturing facilities on the east coast, west coast, and in the central United States reduce fuel consumption and CO2 emissions by reducing transit distance. We strive to reduce energy use and associated greenhouse gas emissions in Trex manufacturing operations by designing our facilities to run efficiently. In addition, nearly all our factory scrap is recycled back into the manufacturing line. Any product that does not meet quality specifications is reprocessed, which eliminates the need for landfill for product waste.

The Company’s primary resource usage consists of water, natural gas and electricity. The Company develops budgets and plans that improve shareholder return by ensuring the optimal use of each resource, which promotes resource efficiency and minimal waste of the resource. Water management is of critical importance to us. Our Virginia and Nevada manufacturing facilities have closed-loop recirculation systems that run water through multiple cycles of re-use before being returned to the municipal wastewater stream. We prioritize energy savings as part of our ongoing evaluation and optimization of business operations and manufacturing processes. We regularly assess environmental impacts at each stage of our manufacturing process and seek to continually improve our performance. We ensure that all manufacturing facilities meet emission standards for the locality in which they operate and certify to applicable authorities that our emissions are within the relevant locality’s standards.

Market Recognition of Trex Brand’s Environmental Characteristics

The Company’s internal standards for environmental stewardship and product integrity are recognized year-over-year in the marketplace. Trex was named to the Barron’s “100 Most Sustainable Companies” list for 2025. Trex earned top honors in the Environment + Energy Leader Awards as top product of the year and judge's choice winner. In addition, Trex was also recognized as Sustainable Brand Leader in the decking category of Green Builder’s annual Reader’s Choice Survey for the 15th consecutive year.

Trex environmental benefits are recognized by the receipt of the Leadership in Energy and Environmental Design (LEED) certification by the United States Green Building Council. Trex decking products meet LEED requirements for builders and our commercial products have contributed to the LEED certifications of some high-profile venues. LEED is a point-based system designed to reward points to building projects that incorporate efficient, and safe eco-friendly products, leading to a building’s designation as LEED Silver, Gold or Platinum. Trex decking can add up to four points to a project in the Materials and Resources category for being composed of 95% recycled and reclaimed materials. As a U.S. Green Building Council member, Trex works along with council members to transform the way buildings and communities are designed, built and operated with the goal of creating environmentally and socially responsible spaces that improve the quality of life.

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Occupational Health and Safety

The health and safety of our employees is our highest priority. We have a strong Environmental, Health and Safety (EHS) program that focuses on developing and implementing policies and effective safety training programs, as well as performing internal safety assessments to ensure a company-wide culture of safety and accountability.

Every member of the Trex community plays a vital role in maintaining a safe work environment. Our Chief Executive Officer and Board of Directors are responsible for ensuring compliance with applicable laws and the Company’s own standards and practices. At Trex, our Occupational Health and Safety Policy lays out the key principles that guide our approach and sets clear expectations for every department across the company. The Trex Occupational Health and Safety Policy, located on our website at www.trex.com/our-company, sets forth our commitment to sustaining a compliant and safety-conscious work environment, keeping safety at the forefront of our business, and is based on:

Compliance with statutory, regulatory and other legal requirements;

A comprehensive understanding of worker expectations;

Demonstrating employee safety leadership in all processes while striving to consistently improve performance; and

Tracking company and site level safety performance metrics including common lagging indicators, such as injury rates, but also leading indicators such as safety observations, near-misses, and proactive actions taken at the sites to ensure worker safety.

Each of our manufacturing sites have dedicated health and safety professionals (EHS professionals) and safety committees. All EHS professionals are required to complete continuing education courses to build internal expertise and capacity.

Our Safety Steering Committee continues to grow and add organizational alignment. The Safety Steering Committee’s charter creates a forum for managers and leaders from all functional areas to discuss health and safety. This includes reviewing incidents and corrective actions from across the organization, sharing information related to safety improvements, and providing transparency related to health and safety performance monthly.

Our Rules to Live By campaign has become the foundation of our safety focus and outlines expectations of employee compliance with safety rules related to high-risk activities such as powered industrial trucks, lockout/tagout, and control of hazardous energy, confined spaces, machine guarding, working at height, and hoisting and rigging.

In 2025, Trex improved and re-launched numerous health and safety initiatives including FASTT. FASTT is a common safety-observation and risk assessment acronym that stands for: F - Find the task, A- Analyze the hazards, S - Select controls, T- Take action, and T -Tell others/track results. Our FASTT response program is a weekly meeting of frontline leaders and support personnel focused on identifying and correcting safety non-compliance on the production floor to prevent incidents from occurring. We have also revitalized our safety observation card program to increase engagement with employees on the floor and give them a tool to create ownership of their personal health and safety as well as the health and safety of the people they work with.

Websites and Additional Information

The U.S. Securities and Exchange Commission (SEC) maintains an Internet web site at www.sec.gov that contains reports, proxy statements, and other information regarding our Company. Our website is www.trex.com. In addition, we maintain an Internet corporate web site at www.trex.com/our-company/investor-relations. We make available through our web site our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and all amendments to those reports, as soon as reasonably practicable after we electronically file with or furnish such material to the SEC. We do not charge any fees to view, print, or access these reports on our web site. The contents of our web site are not a part of this report.

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Item 1A. Risk Factors

Our business operates in one reportable segment, Trex, and is subject to a number of risks, including the following.

Risks Related to the Distribution and Sale of Our Product

Risk Discussion

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Risk Discussion

Risk Discussion

Risk Discussion

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Risk Discussion

Risk Discussion

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Risk Discussion

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Risks Related to the Manufacture of Our Product

Risk Discussion

Risk Discussion

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Risk Discussion

Risk Discussion

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Risk Discussion

Risk Discussion

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Risks Related to the Availability of Capital

Risk Discussion

Risks Related to Other Matters

Risk Discussion

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Risk Discussion

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Risk Discussion

Risk Discussion

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Item 1B. Unresolved Staff Comments

None.

Item 1C. Cybersecurity

Cybersecurity Risk Management

The Company has systems and processes for identification, assessment, and management of material risks from cybersecurity threats, as such term is defined in Item 106(a) of Regulation S-K. The Company’s multi-faceted approach includes deploying applications and control activities to actively monitor and mitigate potential threats to the Company’s IT environment.

These activities include, but are not limited to, engaging an external third-party to monitor information systems security events, conducting annual security training of employees, testing employees via periodic phishing campaigns, conducting system vulnerability scanning, utilizing a patching program to remediate critical patches, and utilizing an external third-party to perform testing to identify gaps in the Company’s security program. The Company also performs third-party risk management to identify and mitigate risks from third parties such as vendors, suppliers, and other business partners. Additionally, for providers of software-as-a-service and other services that hold Company data, the Company reviews and assesses industry standard certifications such as System and Organization Controls (SOC) 1 or SOC 2 reports and cybersecurity preparedness questionnaires. Mitigation of risk efforts are coordinated by the Company’s Director of Information Security, utilizing internal resources and third-party providers.

The Company has not had any cybersecurity risks that have materially affected, or are reasonably likely to affect, the Company, including its business strategy, results of operations, or financial condition. Cybersecurity risks are disclosed in Part I Item 1A. Risk Factors, incorporated herein by reference.

Cybersecurity Governance

Our cybersecurity programs, including the cross-functional management committees responsible for identifying, assessing, and mitigating cybersecurity risks and incidents, are overseen by our Vice President and Chief Information Officer. Day-to-day administration of the cybersecurity programs are led by our Director of Information Security, a direct report to the Vice President and Chief Information Officer. Our Vice President and Chief Information Officer has 28 years of technology leadership experience and a Doctor of Business Administration. Our Director of Information Security has 28 years of experience in infrastructure and security operations and a degree in Information Technology Management. Our Vice President and Chief Information Officer escalates emerging cybersecurity risks and threats, provides updates on the status of projects to strengthen the Company’s information security systems, and provides updates on any cybersecurity incidents to members of our senior leadership team, including our Senior Vice

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President, Chief Financial Officer, Senior Vice President, Chief Legal Officer and Secretary, and Senior Vice President, Chief Human Resources Officer.These leaders facilitate notification to the Audit Committee of the Board of Directors.

The Audit Committee of the Board of Directors oversees cybersecurity related risks. Members of the Audit Committee receive the above referenced notifications and updates on a quarterly basis from the Company’s Chief Information Officer as the designated representative of the Executive Information Security Oversight Committee.

Additionally, the Company has a written Information Security Policy and a Cybersecurity Incident Response Plan that provides the above-referenced processes by which such committees are informed of and monitor the prevention, detection, mitigation, and remediation of cybersecurity incidents and material risks from cybersecurity threats.

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Item 2. Properties

We own and lease certain properties, as noted in the below table:

Description SquareFootage/Acres Leased /Owned LeaseExpirationDates Location

Corporate Headquarters Office 62,210 SF Owned N/A Virginia

Corporate Headquarters Land 8 Acres Owned N/A Virginia

We regularly evaluate our various facilities and equipment and make capital investments where necessary. In 2025, we spent a total of $233.6 million on capital expenditures and intangibles, including $167.8 million related to construction of our Arkansas facility, $21.2 million in safety, environmental, and general support, $10.0 million investment in our Enterprise Resource Planning (ERP) tool and other platforms, and $22.0 million in all other including cost reduction initiatives and capacity expansion at our existing facilities.

In October 2021, the Company announced plans to add a third manufacturing facility located in Little Rock, Arkansas (Little Rock). Construction on the new facility began in the second quarter of 2022. In connection with the construction of the new facility, during 2024 the Company and Little Rock entered into an agreement in which Little Rock agreed to issue up to $450 million of its industrial revenue bonds (IRBs) for the purpose of constructing a manufacturing facility. Under the agreement, the Company transferred ownership of the facility to Little Rock and simultaneously leased the related asset from Little Rock. The Company is also the purchaser of the IRBs and, therefore, is the bondholder as well as the lessee of the Little Rock facility purchased with the IRB proceeds.

As a result of the agreement, the Company was able to reduce the cost of certain state and local tax expenditures for twenty years. The Company has a purchase option included in the lease agreement for below the fair value of the asset, which prevents the transfer of the asset to Little Rock from being recognized as a sale. Furthermore, the Company has not derecognized the transferred asset and continues to recognize it in property, plant and equipment in the Consolidated Balance Sheets. The Company has the right and intends to set-off any obligations to make payments under the finance liability, with proceeds due from the IRBs. The liability and IRB asset are equal and are reported net in the Consolidated Balance Sheets.

For information about our leases, see Note 10 to our Consolidated Financial Statements appearing elsewhere in this report. The equipment and machinery we use in our operations consist principally of plastic and wood conveying and processing equipment. We own all of our manufacturing equipment. We lease some equipment, primarily forklifts, at our facilities under operating leases.

Item 3. Legal Proceedings

The Company has lawsuits, as well as other claims, pending against it which are ordinary routine litigation and claims incidental to the business. Management has evaluated the merits of these lawsuits and claims and believes that their ultimate resolution will not have a material effect on the Company’s consolidated financial condition, results of operations, liquidity or competitive position.

Item 4. Mine Safety Disclosures.

Not applicable.

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PART II

Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

Market for Common Stock

Our common stock has been listed on the New York Stock Exchange (NYSE) since April 8, 1999. Effective November 23, 2009, our common stock is listed under the symbol “TREX”.

Dividend Policy

We have never paid cash dividends on our common stock and our credit agreement places limitations on our ability to pay cash dividends. We intend to retain future earnings to finance the development and expansion of our business or the repurchase of our common shares and, therefore, have no current intention to pay cash dividends. However, we reconsider our dividend policy on a regular basis and may determine to pay dividends in the future.

Issuer Purchases of Equity Securities

The following table provides information relating to the purchases of our common stock during the three months ended December 31, 2025 in accordance with Item 703 of Regulation S-K:

(1)

During the three months ended December 31, 2025, 32 shares of common stock were withheld by, or delivered to, the Company pursuant to provisions in agreements with recipients of restricted stock granted under the Company’s 2014 and 2023 Stock Incentive Plan allowing the Company to withhold, or the recipient to deliver to the Company, the number of shares having the fair value equal to the tax withholding due.

(2)

On May 4, 2023, the Trex Board of Directors adopted a stock repurchase program (2023 Stock Repurchase Program) of up to 10.8 million shares of the Company's outstanding common stock. The 2023 Stock Repurchase Program has no set expiration date and 1,526,927 shares were repurchased under the program during the three months ended December 31, 2025.

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Stockholder Return Performance Graph

The following graph and table show the cumulative total stockholder return on the Company’s common stock for the last five fiscal years compared to the Russell 2000 Index and the Standard and Poor’s 600 Building Products Index (S&P 600 Building Products). The graph assumes $100 was invested on December 31, 2020, in (1) the Company’s common stock, (2) the Russell 2000 Index and (3) the S&P 600 Building Products and assumes reinvestment of dividends and market capitalization weighting as of December 31, 2021, 2022, 2023, 2024 and 2025.

Comparison of Cumulative Total Return

Among Trex Company, Inc., Russell 2000 Index, and S&P 600 Building Products Index

Other Stockholder Matters

As of February 5, 2026, there were approximately 125 holders of record of our common stock, although we believe that there are a significantly larger number of beneficial owners of our common stock.

In 2025, we submitted to the NYSE in a timely manner the annual certification that our Chief Executive Officer was not aware of any violation by us of the NYSE corporate governance listing standards.

Item 6. [Reserved]

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Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations

This Management’s Discussion and Analysis of Financial Condition and Results of Operations (MD&A) contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. All statements regarding our expected financial position and operating results, our business strategy, our financing plans, forecasted demographic and economic trends relating to our industry and similar matters are forward-looking statements. These statements can sometimes be identified by our use of forward-looking words such as “may,” “will,” “anticipate,” “estimate,” “expect,” “intend” or similar expressions. We cannot promise you that our expectations in such forward-looking statements will turn out to be correct. Our actual results could be materially different from our expectations because of various factors, including the factors discussed under “Item 1A. Risk Factors.” These statements are also subject to risks and uncertainties that could cause the Company’s actual operating results to differ materially. Such risks and uncertainties include, but are not limited to, the extent of market acceptance of the Company’s current and newly developed products; the costs associated with the development and launch of new products and the market acceptance of such new products; the sensitivity of the Company’s business to general economic conditions; the impact of seasonal and weather-related demand fluctuations on inventory levels in the distribution channel and sales of the Company’s products; the availability and cost of third-party transportation services for the Company’s products and raw materials; the Company’s ability to obtain raw materials, including scrap polyethylene, wood fiber and other materials used in making our products, at acceptable prices; increasing inflation and tariffs in the macro-economic environment; the Company’s ability to maintain product quality and product performance at an acceptable cost; the Company’s ability to increase throughput and capacity to adequately match supply with demand; the level of expenses associated with warranty claims, product replacement and consumer relations expenses related to product quality; the highly competitive markets in which the Company operates; cyber-attacks, security breaches or other security vulnerabilities; the impact of current and upcoming data privacy laws and the EU General Data Protection Regulation and the related actual or potential costs and consequences; material adverse impacts from global public health pandemics and geopolitical conflicts; and material adverse impacts related to labor shortages or increases in labor costs.

OVERVIEW

The following MD&A is intended to help the reader understand the operations and current business environment of the Company. The MD&A is provided as a supplement to — and should be read in conjunction with — our Consolidated Financial Statements and the accompanying notes thereto contained in “Item 8. Financial Statements and Supplementary Data” of this report. MD&A includes the following sections:

Our Business — a general description of our business, a brief overview of our products, and highlights for the twelve months ended December 31, 2025.

Critical Accounting Estimates — a discussion of accounting policies that require critical judgments and estimates.

Results of Operations — an analysis of our consolidated results of operations for 2025 and 2024 and year-to-year comparisons. An analysis of our consolidated results of operations for 2024 and 2023 and year-to-year comparisons between 2024 and 2023 can be found in MD&A in Part II, Item 7 of the Company’s Form 10-K for the year ended December 31, 2024.

Liquidity and Capital Resources — an analysis of cash flows, contractual obligations, and a discussion of our capital and other cash requirements.

New Accounting Standards — a general description of new accounting standards applicable to our business and a discussion of their expected impact.

OUR BUSINESS

General. The Company is the world’s largest manufacturer of high-performance, low-maintenance wood-alternative decking and railing and outdoor living products and accessories, marketed under the brand name Trex®, with more than 30 years of product experience. A majority of our products are manufactured in a proprietary process that combines reclaimed wood fibers and recycled polyethylene. The Company is focused on using renewable resources.

Outdoor living remains one of the fastest growing categories within the repair and remodel sector, and the strength of the Trex brand coupled with our expanded manufacturing capacity, our key competitive advantages, help us to effectively unlock potential market share and drive long term growth. We continue to benefit from increasing consumer interest in our environmentally friendly, low maintenance product portfolio that transforms and enhances the outdoor living experience.

We continue to focus on cost reduction projects and identifying continuous improvement opportunities to enhance our margins. Specifically, our efforts are primarily centered on increased automation, modernization, enhanced energy efficiency and

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improvements to raw material processing. At the same time, we intend to expand our marketing campaigns, continue highlighting the advantages of Trex decking over wood, as well as focusing on innovation and new product development to further strengthen our consumer brand and distribution advantages. These initiatives should help drive continued topline and profit growth and accelerated market share conversion.

Trex is the world’s largest manufacturer of wood-alternative composite decking and railing products manufactured in the United States. We offer a comprehensive set of aesthetically pleasing, high-performance, low maintenance, eco-friendly products in the decking, railing, fencing, cladding and outdoor lighting categories. We believe that the range and variety of our products allow consumers to design much of their outdoor living space using Trex brand products.

We offer the following composite decking and railing products:

Fencing Trex Seclusions® fencing

Highlights:

Trex Named America's Most Trusted® Outdoor Decking for fifth consecutive year, according to a nationwide study by Lifestory Research.

Trex Expands Mid-Tier Composite Decking Options with New Performance EngineeredTM Boards.Additions to the Trex Select® decking line include brightened colors, updated design aesthetics, and Trex's proprietary SunComfortableTM technology.

Trex Ranked Among Barron's 100 Most Sustainable Companies for 2025. Trex moved up 20 spots in its 2nd appearance on the Barron's List of 100 Most Sustainable Companies for 2025.

Trex Releases 2025 Outdoor Living Forecast. In February 2025, Trex released its 2025 Outdoor Living Forecast highlighting five outdoor trends it expects to shape backyards in the coming year.

Trex Earned Top Honors at Environment + Energy Leader Awards. Trex® Composite Decking was named Product of the Year and Judge's Choice Award as the top-scoring entry in the Consumer + Residential category.

Trex named Green Builder Media's Sustainable Brand Leader in the decking category. Trex Select® was also selected by Green Builder editors as one of the 50 most sustainable products of the year.

Trex Takes On Real Life In New "Trex Vs" AD Campaign. This new series of commercial spots and digital concepts showcases how the brand's Performance-EngineeredTM decking and railing enhance and stand up to everyday life.

Trex's 2024 Sustainability Report highlights how circular innovation is adding value to the business. The comprehensive report details the Company's continued leadership in materials circularity, environmental stewardship, and social responsibility.

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Trex Simplifies Railing Specification with Interactive Design Tool. The Trex® Deck Railing Designer was launched in an effort to simplify the railing selection process with speed, accuracy, and efficiency in mind. This new tool delivers 3D visualization and instant material estimates which simplifies the planning process for both homeowners and contractors.

Trex Broadens Western U.S. Reach Through Expansion with International Wood Products, LLC (IWP). IWP will exclusively stock Trex® decking and railing products at its newly opened facility in Salt Lake City, Utah strengthening Trex's presence in Utah and across the Intermountain West.

Trex Celebrates Completion of 2025 Sunset Idea House in Palm Springs. Featuring performance engineeredTM products and modeled for eco-conscious design, Trex decking and railing have been featured in the Sunset Idea House creating durable, functional, and sleek outdoor living spaces.

Trex Grows Distribution Footprint with Weekes Forest Products. This expanded relationship will increase channel support and product accessibility. Weekes' distribution centers in St. Paul and Moorhead, MN will service territories in Minnesota, Wisconsin, Iowa, and North Dakota.

Trex Expands Distribution Collaboration with Specialty Building Products (SBP). Longtime Trex-exclusive decking distributor SBP will now provide statewide distribution coverage in Michigan.

Trex Name "The Coolest Thing Made in Virginia" by Virginia Manufacturing Association. Trex earned top honors in the 2025 Virginia Manufacturing Cup, earning the title of "The Coolest Thing Made in Virginia" in the Rubber and Plastics Category.

Financial Performance Highlights for the Twelve Months Ended December 31, 2025:

Year EndedDecember 31,

(000s omitted, except per share data)

*A reconciliation of Net Income to EBITDA is presented on page 31 of this document under “Net Income and Earnings Before Interest, Taxes, Depreciation and Amortization (EBITDA).”

Capital expenditures and intangibles. In 2025, we spent a total of $233.6 million on capital expenditures, including $167.8 million related to construction of our Arkansas facility, $21.2 million in safety, environmental, and general support, $10.0 million investment in our ERP tool and other platforms, and $22.0 million in all other including cost reduction initiatives and capacity expansion at our existing facilities.

Repurchase of common shares. We repurchased 1,526,927 shares of our outstanding common stock in 2025 under our stock repurchase programs.

CRITICAL ACCOUNTING ESTIMATES

Our significant accounting policies are described in Note 3 to our Consolidated Financial Statements appearing elsewhere in this report. Our critical accounting estimates include the areas where we have made what we consider to be particularly difficult, subjective or complex judgments in making estimates, and where these estimates can significantly affect our financial results under different assumptions and conditions. We prepare our financial statements in conformity with accounting principles generally accepted in the United States. As a result, we are required to make estimates, judgments, and assumptions that we believe are reasonable based upon the information available. These estimates, judgments and assumptions affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the periods presented. Actual results could be different from these estimates.

Product Warranty. We warrant that for the applicable warranty period our products, when properly installed, used and maintained, will be free from material defects in workmanship and materials and our decking, cladding, fascia and railing products will not split, splinter, rot or suffer structural damage from termites or fungal decay.

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Products sold on or after January 1, 2023: The warranty period for residential use is 50 years for Transcend® decking, 35 years for Select® decking and Universal Fascia, and 25 years for Enhance® decking and Transcend, Select, Enhance and Signature® railing. The warranty period for commercial use is 10 years, excluding Signature railing and Transcend cladding, which each have a warranty period of 25 years. We further warrant that Trex Transcend, Trex Enhance and Trex Select decking and cladding and Universal Fascia products will not fade in color from light and weathering exposure more than a certain amount and will be resistant to permanent staining from food and beverage substances or mold and mildew, provided the stain is cleaned within seven days of appearance, for the warranty period referred to above. If there is a breach of such warranties, we have an obligation either to replace the defective product or refund the purchase price.

Products sold prior to January 1, 2023: The warranty period is 25 years for residential use and 10 years for commercial use. With respect to Trex Signature railing, the warranty period is 25 years for both residential and commercial use. We further warrant that Trex Transcend, Trex Enhance, Trex Select and Universal Fascia products will not fade in color more than a certain amount and will be resistant to permanent staining from food substances or mold, provided the stain is cleaned within seven days of appearance, for the warranty period referred to above. If there is a breach of such warranties, we have an obligation either to replace the defective product or refund the purchase price.

We maintain a warranty reserve for the settlement of our product warranty claims. We accrue for the estimated cost of product warranty claims at the time revenue is recognized based on such factors as historical claims experience and future claims projections. To estimate our future product warranty reserves, the Company utilizes actuarial techniques to determine a reasonable possible range of amounts to be paid related to defects covered by our product warranty. The actuarial techniques consider claims received, claims closed, and the corresponding amounts paid. Estimates for these elements are quantified using a range of assumptions derived from claim history and consideration of additional factors influencing claim counts or costs incurred to settle claims in order determine the best estimate of future claims for which to record a related liability. We review and adjust these estimates, if necessary, based on the differences between actual experience and historical estimates.

The Company uses the best and most complete underlying information available and a rational methodology to determine its warranty obligations. The Company considers all available evidence to assess the reasonableness of all key assumptions underlying its estimated warranty obligations. During the fourth quarter of 2025, the Company utilized an actuary for the first time to review data on its product warranty. This resulted in a change to the methodology in which the Company estimated its product warranty liability. The reserve increased during the period, largely due to the refined methodology, which decreased the Company’s income before income taxes by $6.0 million, decreased net income by $4.4 million, and reduced diluted earnings per share by $0.04.

For additional information about product warranties, see Notes 3 and 19 to the Consolidated Financial Statements appearing elsewhere in this report.

Revenue Recognition. Trex principally generates revenue from the manufacture and sale of its high-performance, low-maintenance, eco-friendly outdoor living products, consisting of composite decking and railing products, hidden fasteners, and a broad offering of outdoor living accessories. Substantially all of its revenues are from contracts with customers, which are individual customer purchase orders of short-term duration of less than one year. Trex satisfies its performance obligations at a point in time. The shipment of each product is a separate performance obligation as the customer is able to derive benefit from each product shipped and no performance obligation remains after shipment. Upon shipment of the product, the customer obtains control over the distinct product and Trex satisfies its performance obligation. Any performance obligation that remains unsatisfied at the end of a reporting period is part of a contract that has an original expected duration of one year or less. Any variable consideration related to the unsatisfied performance obligation is allocated wholly to the unsatisfied performance obligation and recognized when the product ships and the performance obligation is satisfied and is included in “Accrued expenses and other liabilities, Sales and marketing” in Note 8 to the Consolidated Financial Statements presented in this Form 10-K.

Trex may offer various sales incentive programs throughout the year. It estimates the amount of sales incentive to allocate to each performance obligation, or product shipped, based on direct sales to the customer. The estimate is updated each reporting period and any changes are allocated to the performance obligations on the same basis as at inception. Changes in estimate allocated to a previously satisfied performance obligation are recognized as a reduction of revenue in the period in which the change occurs under the cumulative catch-up method. Should estimates change or prove to have been incorrect, it could negatively affect our results of operations and financial condition. In addition to sales incentive programs, Trex may offer payment discounts. It estimates the payment discount that it believes will be taken by the customer based on prior history using the most-likely-amount method of estimation.

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RESULTS OF OPERATIONS

General. Our results of operations are affected by a number of factors, including, but not limited to, the cost to manufacture and distribute products, cost of raw materials, inflation, interest rates, tariffs, consumer spending and preferences, the impact of any supply chain disruptions, economic conditions, and any adverse effects from global health pandemics and geopolitical conflicts.

Net Sales. Net sales consist of sales, net of discounts. The level of net sales is principally affected by sales volume and the prices paid for Trex products. The operating results for Trex have historically varied from quarter to quarter, often due to seasonal trends in the demand for outdoor living products. Seasonal, erratic, or prolonged adverse weather conditions in certain geographic regions reduce the level of home improvement and construction activity and can shift demand for its products to a later period. As part of its normal business practice and consistent with industry practices, Trex has historically offered incentive programs to its distributors and dealers to build inventory levels before the start of the prime deck-building season to ensure adequate availability of its product to meet anticipated seasonal consumer demand and to enable production planning. These incentives include prompt payment discounts and favorable payment terms. In addition, we offer price discounts or volume rebates on specified products and other incentives based on increases in purchases as part of specific promotional programs. The timing of sales incentive programs can impact sales, receivables and inventory levels during the offering period.

Gross Profit. Gross profit represents the difference between net sales and cost of sales. Cost of sales consists of raw materials costs, direct labor costs, manufacturing costs, warranty costs, and freight. Raw materials costs generally include the costs to purchase and transport reclaimed wood fiber, scrap polyethylene and pigmentation for coloring Trex products. Direct labor costs include wages and benefits of personnel engaged in the manufacturing process. Manufacturing costs consist of costs of depreciation, utilities, maintenance supplies and repairs, indirect labor, including wages and benefits, and warehouse and equipment rental activities.

Tariffs account for less than 5% of our cost of sales. The majority of the tariffs are related to purchases of aluminum and steel used in our railing and fastening products. We have and will further mitigate some of the impact on our cost of sales through supplier negotiations and pricing actions.

Selling, General and Administrative Expenses. The largest component of selling, general and administrative expenses is personnel related costs, which include salaries, commissions, incentive compensation, and benefits of personnel engaged in sales and marketing, accounting, information technology, corporate operations, research and development, and other business functions. Another component of selling, general and administrative expenses is branding and other sales and marketing costs, which are used to build brand awareness of Trex. These costs consist primarily of advertising, merchandising, and other promotional costs. Other general and administrative expenses include professional fees, office occupancy costs attributable to the business functions previously referenced, and consumer relations expenses. As a percentage of net sales, selling, general and administrative expenses have varied from quarter to quarter due, in part, to the seasonality of our business.

Below we have included a discussion of our operating results and material changes in our operating results for the year ended December 31, 2025, compared to the year ended December 31, 2024.

Year Ended December 31, 2025 Compared To Year Ended December 31, 2024

Net Sales

Year Ended December 31,

(dollars in thousands)

Total net sales in 2025 increased $22.8 million, or 2.0%, compared to total net sales in 2024. The increase was substantially all driven by price, as the result of a mid-single digit price increase on many of our decking products in 2025. Additionally, 2024 had the benefit of customers purchasing ahead of the price increase announced for January 1, 2025.

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Gross Profit

Year Ended December 31,

(dollars in thousands)

% of total net sales 60.8 % 56.4 %

Gross profit as a percentage of net sales, gross margin, was 39.2% in 2025 compared to 43.6% in 2024. The decrease was primarily the result of higher raw material costs on aluminum and steel, tariffs, changes to production process driven by refinements made to our Enhance® decking product line, and inefficiencies associated with start-up costs at our Arkansas facility, partially offset by higher pricing.

Selling, General and Administrative Expenses

Year Ended December 31,

(dollars in thousands)

% of total net sales 17.2 % 15.6 %

Selling, general and administrative expenses increased $22.0 million to $202.0 million, or 17.2% of net sales in 2025. The increase primarily related to increases of $9.6 million in personnel expenses primarily for increased self-insured medical costs and incentive programs, $7.5 million in branding, $3.5 million in digital transformation, and $2.5 million in Arkansas start-up costs, partially offset by lower miscellaneous expenses year over year.

Provision for Income Taxes

Year Ended December 31,

(dollars in thousands)

Effective tax rate 26.2 % 25.9 %

The effective tax rate for 2025 was 26.2% compared to 25.9% for 2024. The increase in the effective rate was primarily due to excess tax expense from stock-based awards in 2025 and excess tax benefit from stock-based awards in 2024, as well as reduction in the allowable deduction for foreign derived intangible income.

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Net Income and Earnings Before Interest, Taxes, Depreciation and Amortization (EBITDA)1 (dollars in thousands)

Reconciliation of net income (GAAP) to EBITDA (non-GAAP):

Interest expense, net —

Depreciation and amortization 62,957

Interest income, net (11 )

Depreciation and amortization 54,670

Year Ended December 31,

(dollars in thousands)

Total EBITDA decreased 14.8% to $320.9 million for 2025 compared to $376.6 million for 2024. The decrease was driven by lower gross profit and higher selling, general, and administrative expenses.

Year Ended December 31, 2024 Compared To Year Ended December 31, 2023

The Company hereby incorporates by reference the financial results from fiscal year 2023 and the comparison of financial results from fiscal year 2024 to fiscal year 2023 as set forth in the Company’s Management’s Discussion and Analysis of Financial Condition and Results of Operation in the Annual Report on Form 10-K for the year ended December 31, 2024 and filed with the U.S. Securities and Exchange Commission on February 24, 2025.

LIQUIDITY AND CAPITAL RESOURCES

We finance operations and growth primarily with cash flow from operations, borrowings, operating leases, and normal trade credit terms from operating activities.

Sources and Uses of Cash. The following table summarizes our cash flows from operating, investing and financing activities for the years ended December 31, 2025, 2024, and 2023 (in thousands):

1.

EBITDA represents net income before interest, income taxes, depreciation and amortization. EBITDA is not a measurement of financial performance under accounting principles generally accepted in the United States (GAAP). We have included data with respect to EBITDA because management believes the measures facilitate performance comparison between the Company and its competitors. Management considers EBITDA to be important supplemental indicators of our core operating performance because the measures eliminate interest, income taxes, and depreciation and amortization charges to net income. In relation to its competitors, EBITDA eliminates differences among companies in capitalization and tax structures, capital investment cycles and ages of related assets, especially when comparing financial results to prior periods. For these reasons, management believes that EBITDA provides important information regarding the operating performance of the Company. Non-GAAP measures are not meant to be considered superior to or a substitute for our GAAP results.

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Year Ended December 31,

Operating Activities

Cash provided by operating activities in 2025 was $358.1 million compared to cash provided by operating activities of $143.9 million in 2024. The $214.2 million increase in cash provided by operating activities was primarily a result of a decrease in inventories and decreases in accounts receivable. The decrease in inventories is the result of decreased production in 2025 compared to 2024, while the decrease in accounts receivable was related to the non-recurrence of distributors buying ahead of the January 2025 price increase.

Investing Activities

In 2025, cash used in investing activities for capital expenditures and intangibles was $233.6 million, including $167.8 million related to construction of our Arkansas facility, $21.2 million in safety, environmental, and general support, $10.0 million for our ERP tool and other platforms, and $22.0 million in all other including cost reduction initiatives and capacity expansion at our existing facilities.

Financing Activities

Net cash used in financing activities in 2025 consisted primarily of borrowings under our revolving credit facility used to fund our capital expenditures and to a lesser extent share repurchases.

Stock Repurchase Program. On May 4, 2023, the Trex Board of Directors adopted a new stock repurchase program (2023 Stock Repurchase Program) of up to 10.8 million shares of its outstanding common stock, and terminated the existing stock repurchase program. The 2023 Stock Repurchase Program has no set expiration date and during 2025 the Company repurchased 1,526,927 shares of its common stock under the 2023 Stock Repurchase Program.

Inventory in Distribution Channels. We sell our Trex decking and railing products through a tiered distribution system. We have over 50 distributors worldwide and two national retail merchandisers to which we sell our products. The distributors in turn sell the products to dealers and retail locations who in turn sell the products to end users. Significant increases in inventory levels in the distribution channel without a corresponding change in end-use demand could have an adverse effect on future sales.

Seasonality. The operating results for Trex have historically varied from quarter to quarter. Seasonal, erratic or prolonged adverse weather conditions may reduce the level of home improvement and construction activity and can shift demand for its products to a later period. As part of its normal business practice and consistent with industry practice, Trex has historically offered incentive programs to its distributors and dealers to build inventory levels before the start of the prime deck-building season in order to ensure adequate availability of its product to meet anticipated seasonal consumer demand. The seasonal effects are often offset by the positive effect of the incentive programs.

Indebtedness prior to October 10, 2024. On May 18, 2022, the Company entered into a Credit Agreement (Credit Agreement) with certain lending parties thereto (Lenders) to amend and restate the Fourth Amended and Restated Credit Agreement dated as of November 5, 2019. Under the Credit Agreement, the Lenders agreed to provide the Company with one or more Revolving Loans in a collective maximum principal amount of $400,000,000 (Loan Limit) throughout the term, which ends May 18, 2027 (Term). Included within the Loan Limit are sublimits for a Letter of Credit facility in an amount not to exceed $60,000,000; and Swing Line Loans in an aggregate principal amount at any time outstanding not to exceed $20,000,000. The Revolving Loans, the Letter of Credit facility and the Swing Line Loans are for the purpose of raising working capital and supporting general business operations.

On December 22, 2022, the Company entered into a First Amendment to the Credit Agreement (First Amendment). As a part of the First Amendment, the Credit Agreement was amended and restated to provide for an additional Revolving B Loan (as hereinafter defined). Under the First Amendment, the Lenders agreed to provide the Company with a Revolving B Loan consisting of one or more revolving loans in a collective maximum principal amount of $150,000,000 (Revolving B Loan Limit) throughout the term, which

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ended December 22, 2024 (Revolving B Loan Term). Previously, under the Credit Agreement, there was no Revolving B Loan. The First Amendment also provided that TD Bank, N.A. would serve as Syndication Agent.

In conjunction with the First Amendment, on December 22, 2022, the Credit Agreement was amended and restated to refer to the original loan as the Revolving A Loan. The amended and restated Credit Agreement was made an Exhibit A to the First Amendment. All of the terms of the Credit Agreement apply to the Revolving B Loan.

The amended Credit Agreement provides the Company, in the aggregate, the ability to borrow an amount up to the Revolving A Loan Limit during the Revolving A Loan Term (which ends May 18, 2027) and Revolving B Loan Limit during the Revolving B Loan Term. The Company is not obligated to borrow any amount under the revolving loans. Within the respective loan limit, the Company may borrow, repay and reborrow at any time or from time to time while the notes issued pursuant to the Credit Agreement are in effect.

Base Rate Loans (as defined in the Credit Agreement) under the Revolving A Loan and the Swing Line Loans accrue interest at the Base Rate plus the Applicable Rate (as defined in the Credit Agreement) and Term SOFR Loans for the Revolving Loans accrue interest at the rate per annum equal to the sum of Term SOFR for such interest period plus the Applicable Rate (as defined in the Credit Agreement). The Base Rate for any day is a fluctuating rate per annum equal to the highest of (a) the Federal Funds Rate plus 0.50%, (b) the rate of interest in effect for such day as publicly announced from time to time by Bank of America (BOA) as its prime rate, and (c) the Term SOFR plus 1.0% subject to certain interest rate floors. Repayment of all then outstanding principal, interest, fees and costs is due at the end of the Term.

With respect to Revolving B Loans (as defined in the First Amendment), for any day, the rate per annum is a tiered pricing based upon the Consolidated Debt to Consolidated EBITDA Ratio. The applicable rate for Revolving B Loans that are Base Rate Loans range between 1.20% and 2.15% and the applicable rate for Revolving B Loans that are Term SOFR/Term SOFR Daily Floating Rate range between 0.20% and 1.15%.

Under the terms of the Security and Pledge Agreement, the Company, subject to certain permitted encumbrances, as collateral security for the above-stated loans and all other present and future indebtedness of the Company owing to the Lenders grants a continuing security interest in certain collateral described and defined in the Security and Pledge Agreement but excluding the Excluded Property (as defined in the Security and Pledge Agreement).

Indebtedness on and after October 10, 2024. On October 10, 2024, Trex entered into a Second Amendment to the Credit Agreement (Second Amendment) with certain lending parties thereto (Lenders) to amend that Credit Agreement dated as of May 18, 2022, as amended by that certain First Amendment dated as of December 22, 2022.

The Second Amendment provides us with Revolving A Loans in the maximum principal amount of $400,000,000 (Revolving A Loans), Revolving B Loans in the maximum principal amount of $150,000,000 (Revolving B Loans), and Letters of Credit and Swing Line Loans (as defined in the Credit Agreement). The Second Amendment extends the maturity date of the Revolving B Loans from December 22, 2024 to December 22, 2026.

Base Rate Loans (as defined in the Credit Agreement) under the Revolving A Loan and the Swing Line Loans accrue interest at the Base Rate plus the Applicable Rate (as defined in the Credit Agreement) and Term SOFR Loans for the Revolving Loans accrue interest at the rate per annum equal to the sum of Term SOFR for such interest period plus the Applicable Rate (as defined in the Credit Agreement). The Base Rate for any day is a fluctuating rate per annum equal to the highest of (a) the Federal Funds Rate plus 0.50%, (b) the rate of interest in effect for such day as publicly announced from time to time by BOA as its prime rate, and (c) the Term SOFR plus 1.0% subject to certain interest rate floors. Repayment of all then outstanding principal, interest, fees and costs is due at the end of the Term (as defined in the Credit Agreement).

With respect to Revolving B Loans (as defined in the Credit Agreement), for any day, the rate per annum is a tiered pricing based upon the Consolidated Debt to Consolidated EBITDA Ratio. The applicable rate for Revolving B Loans that are Base Rate Loans range between 0.20% and 1.15%. and the applicable rate for Revolving B Loans that are Term SOFR/Term SOFR Daily Floating Rate range between 1.20% and 2.15%.

At December 31, 2025, we had $133.5 million in outstanding borrowings under the revolving credit facility. The total availability under the revolving credit facility was $413.4 million as of December 31, 2025, which reflects a reduction for outstanding letters of credit totaling $3.1 million.

Compliance with Debt Covenants and Restrictions. Pursuant to the terms of the Credit Agreement, the Company, is subject to certain loan compliance covenants. The Company was in compliance with all covenants at December 31, 2025. Failure to comply with

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the financial covenants could be considered a default of repayment obligations and, among other remedies, could accelerate payment of any amounts outstanding.

Industrial Revenue Bonds. In October 2021, the Company announced plans to add a third manufacturing facility located in Little Rock, Arkansas (Little Rock). Construction on the new facility began in the second quarter of 2022. In connection with the construction of the new facility, during 2024 the Company and Little Rock entered into an agreement in which Little Rock agreed to issue up to $450 million of its industrial revenue bonds (IRBs) for the purpose of constructing a manufacturing facility. Under the agreement, the Company transferred ownership of the facility to Little Rock and simultaneously leased the related asset from Little Rock. The Company is also the purchaser of the IRBs and, therefore, is the bondholder as well as the borrower/lessee of the Little Rock facility purchased with the IRB proceeds.

As a result of the agreement, the Company was able to reduce the cost of certain state and local tax expenditures for twenty years. The Company has a purchase option included in the lease agreement for below the fair value of the asset, which prevents the transfer of the asset to Little Rock from being recognized as a sale. Furthermore, the Company has not derecognized the transferred asset and continues to recognize it in property, plant and equipment in the Consolidated Balance Sheets. The Company has the right and intends to set-off any obligations to make payments under the finance liability, with proceeds due from the IRBs. The liability and IRB asset are equal and are reported net in the Consolidated Balance Sheets. As of December 31, 2025, the gross asset and liability associated with the IRBs was $450 million.

Contractual Obligations. Our contractual obligations consist primarily of purchase commitments and operating leases.

Purchase obligations represent supply contracts with raw material vendors and service contracts for hauling raw materials. Open purchase orders written in the normal course of business for goods or services that are provided on demand have been excluded as the timing of which is not certain. As of December 31, 2025, we have purchase obligations under material supply contracts of $25.9 million for the year ending December 31, 2026, $24.6 million in 2027, and $9.7 million in 2028. Our purchase obligations do not currently extend beyond 2028. Please refer to Note 19 to the Consolidated Financial Statements in this filing for additional information on our purchase commitments.

Operating leases represent office space, storage warehouses, manufacturing facilities and certain office and plant equipment under various operating leases, and include operating leases accounted for under Financial Accounting Standards Board Accounting Standards Codification Topic 842 and short-term leases. As of December 31, 2025, we have operating lease liabilities of $12.4 million for the year ending December 31, 2026, $32.2 million for the years 2027 through 2030 and $19.8 million thereafter. Please refer to Note 10 to the Consolidated Financial Statements in this filing for additional information on our operating leases.

The Company believes that its cash on hand and cash generated through operating activities, both over the next 12 months and beyond the next 12 months, should be sufficient to cover purchase obligations and operating leases.

Off-Balance Sheet Arrangements. We do not have off-balance sheet financing arrangements.

Capital and Other Cash Requirements. Our capital expenditure guidance for 2026 is $100 million to $120 million. Our capital allocation priorities for 2026 include expenditures for internal growth opportunities, manufacturing cost reductions, upgrading equipment and support systems, and acquisitions which fit our long-term growth strategy as we continue to evaluate opportunities that would be a good strategic fit for Trex, and return of capital to shareholders.

We believe that cash on hand, cash flows from operations and borrowings expected to be available under our revolving credit facility will provide sufficient funds to enable us to fund planned capital expenditures, make scheduled principal and interest payments, fund the warranty reserve, meet other cash requirements, and maintain compliance with terms of our debt agreements for at least the next 12 months. We currently expect to fund future capital expenditures from operations and borrowings under the revolving credit facility. The actual amount and timing of future capital requirements may differ materially from our estimate depending on the demand for Trex products and new market developments and opportunities. Our ability to meet our cash needs during the next 12 months and thereafter could be adversely affected by various circumstances, including increases in the cost of raw materials and product replacement costs, quality control problems, higher than expected product warranty claims, service disruptions and lower than expected collections of accounts receivable. In addition, any failure to negotiate amendments to our existing debt agreements to resolve any future noncompliance with financial covenants could adversely affect our liquidity by reducing access to revolving credit borrowings needed primarily to fund seasonal borrowing needs. We may determine that it is necessary or desirable to obtain financing through bank borrowings or the issuance of debt or equity securities to address such contingencies or changes to our business plan. Debt financing would increase our level of indebtedness, while equity financing would dilute the ownership of our stockholders. There can be no assurance as to whether, or as to the terms on which, we would be able to obtain such financing, which would be restricted by covenants contained in our existing debt agreements.

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NEW ACCOUNTING STANDARDS

New Accounting Standards Recently Adopted.

In December 2023, the FASB issued ASU No. 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures.” The guidance requires public entities to disclose additional categories of information related to federal, state, and foreign income taxes and additional details related to reconciling items should they meet a quantitative threshold. The guidance requires disclosure of income taxes paid (net of refunds received) disaggregated by federal, state, and foreign taxes and to disaggregate the information by jurisdiction based on quantitative thresholds. The guidance is effective for fiscal year beginning after December 15, 2024. Early adoption was permitted. The Company adopted the standard in the quarterly period ended December 31, 2025. The Company applied the standard retrospectively and accordingly prior periods were adjusted. Adoption of this guidance did not impact consolidated results of operations and financial position.

New Accounting Standards Not Yet Adopted.

In September 2025, the FASB issued ASU No. 2025-06, "Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40)." This guidance clarifies and modernizes when an entity is required to begin capitalizing software costs. Specifically, it requires capitalization when both of the following are met (i) management has authorized and committed to funding the software project and (ii) it is probable that the project will be completed and the software will be used to perform the function intended. The amendments to this update are effective for annual reporting periods beginning after December 15, 2027, and interim reporting periods within those annual reporting periods. Early adoption of this update is permitted. The amendments to this update may be applied prospectively, retrospectively, or on a modified transition approach. The Company is evaluating this guidance and the impact it may have on its Consolidated Financial Statements upon adoption.

In July 2025, the FASB issued ASU No. 2025-05, "Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets." This guidance provides an optional practical expedient related to the estimation of expected credit losses for current accounts receivable and contract assets that arise from transactions accounted for under FASB Accounting Standards Codification 606. Specifically, this optional practical expedient allows an entity to assume that current conditions as of the balance sheet date will not change for the remaining life of the asset. The amendments to this update are effective for annual reporting periods beginning after December 15, 2025, and interim reporting periods within those annual reporting periods. Early adoption of this update is permitted. The amendments to this update should be applied prospectively. The Company continues to evaluate the guidance and does not believe adoption will have a material impact on its consolidated results of operations or financial position.

In November 2024, the FASB issued ASU No. 2024-03, “Income Statement – Reporting Comprehensive Income – Disaggregation Disclosures.” This guidance requires more detailed disclosure about the types of expenses presented within the expense captions of the financial statements. Specifically, disclosure of purchases of inventory, employee compensation, depreciation, and intangible asset amortization are required on both an interim and annual basis. In addition, a qualitative description of remaining amounts in relevant expense captions which have not separately been disaggregated will be required on an interim and annual basis. On an annual basis, disclosure of an entity’s definition of selling expenses and the amount of selling expenses is required. The amendments to this update are effective for annual reporting periods beginning after December 15, 2026, and interim periods beginning after December 15, 2027. Early adoption of this update is permitted. The amendments to this update should be applied prospectively to financial statements issued for reporting periods after the effective date of the update or retrospectively to any or all prior periods presented in the financial statements. The Company believes adoption will result in expanded financial statement footnote disclosure but does not believe adoption of this update will have a material impact on its consolidated results of operations. The Company is continuing to evaluate the impacts of the pending adoption. As such, the Company’s preliminary assessments are subject to change.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk

We are subject to market risks from changing interest rates associated with our borrowings. To meet our seasonal working capital needs, we borrow periodically on our variable rate revolving line of credit. At December 31, 2025, we had $133.5 million in debt outstanding under our revolving line of credit. While variable rate debt obligations expose us to the risk of rising interest rates, an increase of 1% in interest rates would not have a material adverse effect on our overall financial position, results of operations or liquidity.

In certain instances, we may use interest rate swap agreements to modify fixed rate obligations to variable rate obligations, thereby adjusting the interest rates to current market rates and ensuring that the debt instruments are always reflected at fair value. We had no interest rate swap agreements outstanding as of December 31, 2025.

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Item 8. Financial Statements and Supplementary Data

The financial statements listed in Item 15 of this Form 10-K are incorporated by reference in this Item 8 and are filed as part of this report.

Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

None.

Item 9A. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

The Company’s management, with the participation of its President and Chief Executive Officer, who is the Company’s principal executive officer, and its Senior Vice President and Chief Financial Officer, who is the Company’s principal financial officer, has evaluated the effectiveness of the Company’s disclosure controls and procedures as of December 31, 2025. Based on this evaluation, the President and Chief Executive Officer and the Senior Vice President and Chief Financial Officer have concluded that the Company’s disclosure controls and procedures are effective.

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Management’s Report on Internal Control Over Financial Reporting

We, as members of management of Trex Company, Inc. (Company), are responsible for establishing and maintaining adequate internal control over financial reporting. The Company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with U.S. generally accepted accounting principles. Internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the Company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with U.S. generally accepted accounting principles, and that receipts and expenditures of the Company are being made only in accordance with authorizations of management and directors of the Company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the Company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies and procedures may deteriorate.

We assessed the Company’s internal control over financial reporting as of December 31, 2025, based on criteria for effective internal control over financial reporting established in “Internal Control-Integrated Framework (2013)” issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO Framework). Based on this assessment, we concluded that, as of December 31, 2025, our internal control over financial reporting was effective, based on the COSO Framework.

The effectiveness of our internal control over financial reporting as of December 31, 2025, has been audited by Ernst & Young LLP, an independent registered public accounting firm, as stated in their report, which follows hereafter.

TREX COMPANY, INC.

February 25, 2026 By: /S/ BRYAN H. FAIRBANKS

February 25, 2026 By: /S/ PRITHVI S. GANDHI

Changes in Internal Control Over Financial Reporting

There have been no changes in the Company’s internal control over financial reporting identified in connection with the evaluation described above in “Management’s Report on Internal Control Over Financial Reporting” that occurred during the Company’s fourth fiscal quarter that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

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Report of Independent Registered Public Accounting Firm

To the Stockholders and the Board of Directors of Trex Company Inc.

Opinion on Internal Control Over Financial Reporting

We have audited Trex Company, Inc.’s internal control over financial reporting as of December 31, 2025, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) (the COSO criteria). In our opinion, Trex Company Inc. (the Company) maintained, in all material respects, effective internal control over financial reporting as of December 31, 2025, based on the COSO criteria.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the 2025 consolidated financial statements of the Company and our report dated February 25, 2026 expressed an unqualified opinion thereon.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management’s Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects.

Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definition and Limitations of Internal Control Over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ Ernst & Young LLP

Baltimore, Maryland

February 25, 2026

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Item 9B. Other Information

Insider Trading Arrangements. During the quarter ended December 31, 2025, none of our directors or officers (as defined in Rule 16a-1(f) of the Exchange Act) adopted, modified or terminated any contract, instruction or written plan for the purchase or sale of our securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) of the Exchange Act or any non-Rule 10b5-1 trading arrangement (as identified in Item 408(c) of Regulation S-K).

Retention Agreement.On February 24, 2026, the Company entered into a Retention Agreement with Prithvi S. Gandhi, the Company’s Senior Vice President, Chief Financial Officer, pursuant to which the Company will award restricted stock units (RSUs) to Mr. Gandhi, with the RSUs vesting only if Mr. Gandhi is actively employed by the Company on February 24, 2029 (the Retention Date). The aggregate value of the RSUs is $750,000. The number of RSUs shall be based upon the closing market price of the stock on February 24, 2026.

The RSUs will be granted pursuant to the Trex Company, Inc. 2023 Stock Incentive Plan.

The Retention Agreement provides that the RSUs shall vest, and the cash payment will be made, in the event of the death or disability of the Recipient, if the Company terminates the Recipient’s employment without “cause”, or if the Recipient resigns for “good reason,” prior to the Recipient achieving the applicable Retention Date. For this purpose, “cause” shall mean (i) Recipient’s willful or grossly negligent misconduct, or subversive, disruptive or insubordinate behavior, that is injurious to the Company or that violates Company policy; (ii) Recipient’s embezzlement or misappropriation of funds or property of the Company; (iii) Recipient’s conviction of a felony or the entrance of a plea of guilty or nolo contendere to a felony; (iv) Recipient’s conviction of any crime involving fraud, dishonesty, moral turpitude or breach of trust or the entrance of a plea of guilty or nolo contendere to such a crime; or (v) Recipient’s willful failure or refusal by Recipient to devote Recipient’s full business time (other than on account of disability or approved leave) and attention to the performance of Recipient’s duties and responsibilities if such breach has not been cured within 15 days after written notice thereof is given to the Recipient by the Board, and “good reason” shall mean (i) a material and adverse change in Recipient’s status or position(s) as an officer or management employee of the Company, including, without limitation, any adverse change in his status or position as an employee of the Company as a result of a material diminution in Recipient’s duties or responsibilities (other than, if applicable, any such change directly attributable to the fact that the Company is no longer publicly owned) or the assignment to Recipient of any duties or responsibilities which are materially inconsistent with such status or position(s) (other than any isolated and inadvertent failure by the Company that is cured promptly upon his giving notice), or any removal of Recipient from or any failure to reappoint or reelect Recipient to such position(s) (except in connection with Recipient’s termination other than for good reason); (ii) a 10% or greater reduction in Recipient’s aggregate base salary and targeted bonus, other than any such reduction proportionately consistent with a general reduction of pay across the executive staff as a group, as an economic or strategic measure due to poor financial performance by the Company; (iii) the failure by the Company or any successor to continue in effect any material employee benefit plan (excluding any equity compensation plan) in which the Recipient is participating (or plans providing the Recipient with similar benefits that are not materially reduced in the aggregate) other than as a result of the normal expiration of any such plan in accordance with its terms; or the taking of any action, or the failure to act, by the Company or any successor which would adversely affect the Recipient’s continued participation in any of such plans on at least as favorable a basis to Recipient or which would materially reduce Recipient’s benefits under any of such plans, or (iv) Company’s requiring Recipient to be based at an office that is both more than 50 miles from where Recipient’s office is located and further from Recipient’s then current residence.

The Board of Directors has implemented this Retention Agreement reflecting their confidence in Mr. Gandhi’s ability to continue to provide outstanding results and encourage him to continue to focus on the current and future growth of the Company.

The foregoing description of the Retention Agreement is qualified in its entirety by reference to the full text of the Retention Agreement, which is filed as Exhibit 10.10 hereto.

Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

None.

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PART III

Item 10. Directors, Executive Officers and Corporate Governance

Information responsive to this Item 10 is incorporated herein by reference to the sections titled “Information About Nominating and Continuing Directors,” “Named Executive Officers,” and “Corporate Governance” that will be included in our definitive proxy statement for our 2026 annual meeting of stockholders, which we will file with the U.S. Securities and Exchange Commission (SEC) on or before 120 days after our 2025 fiscal year-end.

We have adopted a Code of Conduct and Ethics, which is applicable to all directors, officers and employees, including our Chief Executive Officer and Chief Financial Officer. The code is available on our corporate web site and in print to any stockholder who requests a copy. We also make available on our web site, at www.trex.com/our-company/corporate-governance, and in print to any stockholder who requests them, copies of our corporate governance principles and the charters of each standing committee of our board of directors. Requests for copies of these documents should be directed to Corporate Secretary, Trex Company, Inc., 2500 Trex Way, Winchester, Virginia 22601. To the extent required by SEC rules, we intend to disclose any amendments to our code of conduct and ethics, and any waiver of a provision of the code with respect to our principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, on our web site referred to above within four business days following any such amendment or waiver, or within any other period that may be required under SEC rules from time to time.

We have adopted an Insider Trading Policy that governs the purchase or sale of securities by employees, directors, officers, and any other company including customers or suppliers of Trex Company, Inc. A copy of our insider trading policy is filed as Exhibit 19.1 to this Annual Report.

Item 11. Executive Compensation

Information responsive to this Item 11 is incorporated herein by reference to the sections titled “Non-Employee Director Compensation,” “2025 Non-Employee Director Compensation,” “2025 Non-Employee Director Equity Awards,” “Compensation Discussion and Analysis,” “Report of the Compensation Committee of the Board of Directors of Trex Company, Inc.,” “Summary Compensation Table,” “All Other Compensation Table,” “Grants of Plan-Based Awards,” “Outstanding Equity Awards at Fiscal-Year End,” “2025 Option / SAR Exercises and Stock Vested,” “Retention, Severance and Change in Control Agreements,” “Severance and Change in Control Compensation as of December 31, 2025,” “The Company’s Compensation Policies and Practices as They Relate to Risk,” “Corporate Governance – Compensation Committee Interlocks and Insider Participation” that will be included in our definitive proxy statement for our 2026 annual meeting of stockholders, which we will file with the SEC on or before 120 days after our 2025 fiscal year-end.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

Information responsive to this Item 12 is incorporated herein by reference to the sections titled “Security Ownership” and “Equity Compensation Plan Information” that will be included in our definitive proxy statement for our 2026 annual meeting of stockholders, which we will file with the SEC on or before 120 days after our 2025 fiscal year-end.

Item 13. Certain Relationships and Related Transactions, and Director Independence

Information responsive to this Item 13 is incorporated herein by reference to the sections titled “Corporate Governance – Board Leadership Structure – Director Independence” and “Transactions with Related Persons” that will be included in our definitive proxy statement for our 2026 annual meeting of stockholders, which we will file with the SEC on or before 120 days after our 2025 fiscal year-end.

Item 14. Principal Accounting Fees and Services

Information responsive to this Item 14 is incorporated herein by reference to the section titled “Independent Registered Public Accounting Firm” that will be included in our definitive proxy statement for our 2026 annual meeting of stockholders, which we will file with the SEC on or before 120 days after our 2025 fiscal year-end.

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PART IV

Item 15. Exhibits and Financial Statement Schedules

(a)(1) The following Consolidated Financial Statements of the Company are incorporated by reference in Part II, Item 8 of this Form 10-K:

Report of Independent Registered Public Accounting Firm (PCAOB ID 42) F-2

Consolidated Financial Statements

Consolidated Balance Sheets as of December 31, 2025 and 2024 F-5

Notes to Consolidated Financial Statements F-8

(a)(2) The following financial statement schedule is filed as part of this report:

Schedule II—Valuation and Qualifying Accounts and Reserves F-30

All other schedules for which provision is made in the applicable accounting regulations of the SEC are not required under the related instructions or are inapplicable or not material and, therefore, have been omitted.

(a)(3) See Exhibit Index at the end of the Annual Report on Form 10-K for the information required by this Item.

Item 16. Form 10-K Summary

None.

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EXHIBIT INDEX

Incorporated by reference

ExhibitNumber Description Form Exhibit Filing Date File No.

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Incorporated by reference

ExhibitNumber Description Form Exhibit Filing Date File No.

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Incorporated by reference

ExhibitNumber Description Form Exhibit Filing Date File No.

23* Consent of Ernst & Young LLP, Independent Registered Public Accounting Firm.

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Incorporated by reference

ExhibitNumber Description Form Exhibit Filing Date File No.

101.SCH* Inline XBRL Taxonomy Extension Schema With Embedded Linkbase Documents.

* Filed herewith.

** Management contract or compensatory plan or agreement.

*** Furnished herewith.

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SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Trex Company, Inc.

Date: February 25, 2026 By: /S/ BRYAN H. FAIRBANKS

Bryan H. FairbanksPresident and Chief Executive Officer(Duly Authorized Officer)

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed as of February 25, 2026 by the following persons on behalf of the registrant and in the capacities indicated.

Signature Title

/S/ James E. Cline James E. Cline Chairman

/S/ Ronald W. Kaplan Ronald W. Kaplan Vice Chairman

/S/ Jay M. Gratz Jay M. Gratz Director

/S/ Kristine L. Juster Kristine L. Juster Director

/S/ D. Christian Keffer D. Christian Keffer Director

/S/ Gena C. Lovett Gena C. Lovett Director

/S/ Patricia B. Robinson Patricia B. Robinson Director

/S/ B. Andrew Rose B. Andrew Rose Director

/S/ Irene Tasi Irene Tasi Director

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Signature Title

Source: SEC EDGAR (public domain) · 10-K for the period ended 2025-12-31, filed 2026-02-25 · accession 0001193125-26-068732

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