TABLE OF CONTENTS

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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.

General

Trex Company, Inc. (Trex), was incorporated as a Delaware corporation in 1998. Through December 30, 2022, Trex had one wholly-owned subsidiary, Trex Commercial Products, Inc. Together, Trex and Trex Commercial Products, Inc. are referred to as the Company, we or our. 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. In addition, Trex provided custom-engineered railing and staging systems for the commercial and multi-family market, including sports stadiums and performing arts venues. Our principal executive offices are located at 160 Exeter Drive, Winchester, Virginia 22603, and our telephone number at that address is (540) 542-6300.

Products

Operations and Products: The Company operated in two reportable segments during the three years ended December 31, 2022: Trex Residential Products (Trex Residential), the Company’s principal business based on net sales, and Trex Commercial Products (Trex Commercial). On December 30, 2022, the Company sold substantially all of the assets of its wholly-owned subsidiary and reportable segment, Trex Commercial Products, Inc. See related information in Note 3 to the Consolidated Financial Statements to this Form 10-K.

Trex Residential is the world’s largest manufacturer of high-performance, low-maintenance, eco-friendly wood-alternative composite decking and railing, with more than 30 years of product experience. Trex outdoor living products are marketed under the brand name Trex^® and manufactured in the United States. Stocked in more than 6,700 retail locations worldwide, Trex Residential 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 Residential decking is made in a proprietary process that combines reclaimed wood fibers and recycled polyethylene film, making Trex Residential 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 Residential products are sold to distributors and home centers for final resale primarily to the residential market.

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Trex offers the following products through Trex Residential:

Trex Residential 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 Residential 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 Residential products less costly than wood over the life of the deck.

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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:

Trex Commercial designed and engineered custom railing solutions, which are prevalent in professional and collegiate sports facilities, standardized architectural and aluminum railing systems, which targeted commercial and high-rise applications, and custom staging systems for the performing arts, sports, and event production and rental market. Trex Commercial marketed to architects, specifiers, contractors, and building owners.

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Through the date of sale of Trex Commercial on December 30, 2022, Trex offered the following products through Trex Commercial:

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.

Trex Residential: 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 Residential 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 Residential 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 Residential 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.

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Home Depot and Lowe’s. 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.

In the years ended December 31, 2022, 2021, and 2020, sales to certain customers of Trex Residential accounted for 10% or more of the Company’s total net sales. For the years ended December 31, 2022, 2021, and 2020, three customers of Trex Residential represented approximately 64%, 61%, and 56%, respectively, of the Company’s total net sales.

Trex Commercial: We sold our modular and architectural railing and staging systems to the commercial and multifamily market, including sports stadiums and performing arts venues, primarily to facility owners and general contractors throughout the country. We marketed these products through our direct sales staff, independent sales representatives, and bidding on projects.

Manufacturing Process

Products manufactured at our Trex Residential manufacturing 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. Products manufactured at our Trex Commercial manufacturing facility in Minnesota were primarily manufactured from aluminum and stainless steel. The primary manufacturing process for these products involved cutting, machining, welding and finishing. 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, we announced plans to add a third U.S.-based Trex Residential manufacturing facility located in Little Rock, Arkansas, that will sit on approximately 300 acres of land. The development approach for the new campus will be modular and calibrated to demand trends for Trex Residential outdoor living products. Construction began on the new facility in the second quarter of 2022, and in July 2022, we entered into a design-build agreement. As previously announced, we anticipate spending approximately $400 million on the facility and the budget for the design-build agreement is contained within this amount. Construction for the new facility will be funded primarily through our ongoing cash generation or our line of credit.

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

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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.

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, 2022, we purchased our reclaimed wood fiber requirements under purchase orders and long-term supply commitments not exceeding four years. All of our polyethylene purchases are under short-term supply contracts that generally have a term of approximately one to two years for which pricing is negotiated as needed, or under purchase orders that do not involve long-term supply commitments.

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

The production of our commercial products required a supply of aluminum, stainless steel and glass components. We used multiple sources for each material to ensure consistent availability of material and competitive pricing. We purchased substantially all of our aluminum, stainless steel and glass under purchase orders, which did not involve long-term supply commitments.

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 Residential aesthetically pleasing, high-performance, low-maintenance, eco-friendly outdoor living products. In addition, in the 2022 second quarter we launched Trex Academy, an online multimedia content hub dedicated to helping the Trex Residential Do-It-Yourself customer bring their deck dreams to life by providing how-to content.

Growth Strategies

Our long-term goals are to continue leading the category with beautiful, high-performance, low-maintenance Trex products, including our outdoor living products, such as composite decking and railing for the residential market and custom-engineered railing systems for the commercial market. To do this, we will increase market share and expand into new product categories and geographic markets through the design, creation and marketing of outdoor living products that offer superior aesthetics and quality and by expanding our sales to the commercial market. Trex Residential will expand its offering of eco-friendly decking and railing

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products for a breadth of audiences, whether by converting wood buyers who have not previously considered composite decking or appealing to the most discriminating high-end homeowners seeking superior aesthetics and quality. Additionally, Trex will continue to explore opportunities that leverage our manufacturing and extrusion expertise and recycling heritage. We intend to employ the following long-term strategies to achieve our goals:

Competition

Our primary competition for our composite decking and residential 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 segments of wood material for decking include redwood, cedar and tropical hardwoods, such as ipe, teak and mahogany. These products are often significantly more expensive than pressure-treated lumber, but do not eliminate some of the disadvantages of other wood products.

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 The Azek Company 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, and distribution and brand strength. We believe we compete

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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.

Seasonality

Our operating results for Trex Residential have historically varied from quarter to quarter. 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 practice, Trex Residential Products 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, and the Division of Environmental Protection of Nevada’s Department of Conservation and Natural Resources. 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

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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 one current U.S. Patent for decking technology. We intend to maintain our existing patent in effect until it expires 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

We are committed to furthering our stature as the highest quality, pre-eminent decking brand in the world, while delivering robust value to our shareholders. As we continue to grow, a differentiating factor continues to be the caliber of our talent. The Company embraces a culture of diverse thinking and perspectives. We strive for this by making human capital a key strategic pillar overseen by the Board of Directors and management.

Our focus is to attract, develop and retain a highly engaged and diverse workforce. We accomplish this through broad and transparent employment branding efforts, competitive and equitable compensation philosophies, proactive employee relations, and by offering a work environment with meaningful career growth opportunities.

At December 31, 2022, Trex Residential employed 1,636 full-time employees. Our employees are not covered by collective bargaining agreements. We believe that our relationships with our employees are favorable, and we have not had any serious complaints or claims over the last three years. Our Human Rights Policy sets forth our values related to working conditions and human rights, and it underscores our philosophy about the way we conduct our business. The policy is available at www.trex.com/our-company.

We believe that diversity, equity and inclusion enriches our organization, contributes to our long-term value creation, and fosters an environment of creativity and innovative thinking, which will bring forth new ideas and challenge the status quo. The strategy we have developed aims to advance our efforts to increase the diversity of our workforce, while we continue to be a destination workplace for talent and maximize returns to our shareholders. We are undergoing a new approach for employee communications to further elevate employee engagement while also acting to foster inclusiveness across the organization.

We believe the best candidate or employee is someone who is driven, bold, hard-working, determined and tenacious; embodies our overarching ideals and identity; and who looks, thinks or acts differently than the majority. These differences could be represented by race, ethnicity, gender, or academic and professional backgrounds. When comparing our ethnicity demographics against those in the geographies where we operate, we seek to accurately represent the diversity of our local communities and beyond.

We continue to build our employer brand by accurately and transparently reflecting our work culture to attract candidates with actions that include, but are not limited to:

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Trex has taken these steps to ensure all employees feel comfortable, and to ensure that we remain an employer of choice, well-known for both innovation and opportunity. We are also looking to expand our focus on developing our existing employees so that Trex is well prepared for the future and our employees know they can grow with us. In addition, we provide Code of Conduct and Ethics training to our employees. We are planning a refreshed version of our employee survey for the first quarter of 2023.

Our recruitment strategy includes advanced education recruitment and veteran recruitment. We recognize the skills learned through these pursuits align with the skills necessary to be a successful employee, and our active involvement with these recruiting paths offers many opportunities to build partnerships and reach candidate pools at various career stages that are both diverse and geographically varied. The strategy also offers opportunities to partner with organizations that appeal to these talent groups, to increase our employer brand exposure, and to help sustain diversity and recruitment efforts.

As an equal opportunity employer, Trex is committed to providing fair and equitable pay for all employees across the Company. We strive to be an industry leader in terms of hourly wages, salary and total compensation. We use a compensation grade structure as part of our process to determine the appropriate grade level for each position at Trex. As a result, we set the pay range for each position before considering who we might hire to fill that role. In addition, we regularly review our compensation structures for signs of emerging inequities along gender or ethnicity lines as well as market competitiveness.

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 22, 2022 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. 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 General Counsel.

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 Residential’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,

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greenhouse gas emissions, and waste streams. The foundation for our commitment to sustainability includes, but is not limited to:

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 environmental, social and governance (ESG) matters that are significant to the Company. Periodically, the Committee reviews the Company’s ESG strategy, initiatives and policies and receives updates from the Vice President, Marketing and ESG Development, who oversees the Company’s ESG initiatives. Also, environmental matters relevant to the Company’s operations are the responsibility of the President and Chief Executive Officer, the President of Trex Residential, the President of Trex Commercial, the Senior Vice President and Chief Financial Officer, the Senior Vice President, Chief Legal Officer and Secretary, and the Vice President, General Counsel and Assistant Secretary.

Trex Residential’s proprietary, eco-friendly processing method minimizes greenhouse gas emissions and our bi-coastal factories reduce fuel consumption and CO₂ emissions. We strive to reduce energy use and associated greenhouse gas emissions in Trex manufacturing operations by designing our facilities to run efficiently. In addition, almost 100 percent of our factory runoff and refuse are recycled back into the manufacturing line. Any product that does not meet quality specifications is reprocessed, which eliminates the need for landfill.

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 one of 2022’s 50 Best U.S. Manufacturers by Industry Week and was named to Forbes’ 2021 List of America’s Best Mid-Sized Companies – ranking #12 overall on the list of 100 companies. For the 12^th consecutive year, in 2022 Trex earned the designation “greenest” decking in the industry by the readers of Green Builder magazine and received the highest score for decking in the Green Builder Media Brand Index. Trex was also honored with the 2022 Green Builder Sustainable Product of the Year for Trex AR Deck Visualizer. In addition, Lifestory Research’s America’s Most Trusted^® survey named Trex America’s Most Trusted Outdoor Decking Brand – receiving the only five-star rating in the decking category.

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 Residential decking products

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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 Residential decking can add up to five points to a project — four points in the Materials and Resources category for being composed of 95% recycled and reclaimed materials, and one point in the Innovation and Design category. 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.

Occupational Health and Safety

The health and safety of our employees is our highest priority. We have a strong Environmental, Health and Safety 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.

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:

Each of our manufacturing sites has a dedicated health and safety (EHS) manager and committee. The Site EHS Managers ensure safety is at the forefront of our manufacturing operations every day. Employee representatives on the Site Safety Committee meet monthly to collect, discuss and act upon safety feedback from their colleagues. Our active Site Safety Committees perform safety audits and observations, review and trend all incidents, and participate in all Pre-Startup Safety Reviews and are an example of our robust employee engagement in safety. Long term, the Company is committed to pursuing Occupational Health and Safety Administration Voluntary Protection Program (VPP) recognition and is an active participant in state level VPP development programs. The Company is a member of the Voluntary Protection Program Participants Association, the National Safety Council, and the National Fire Protection Association. Also, we support all EHS staff in becoming Certified Occupational Safety Specialists and obtaining the Certificate for Occupational Safety Managers through programs offered by the Federal Occupational Health and Safety Administration.

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. 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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Through December 30, 2022, our Company operated in two reportable segments, Trex Residential and Trex Commercial. On December 30, 2022, we sold substantially all of the assets of our wholly owned subsidiary and reportable segment, Trex Commercial Products, Inc. As of December 31, 2023, our business is subject to a number of risks, including the following:

Risks Related to the Distribution and Sale of Our Product

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Risks Related to the Manufacture of Our Product

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Risks Related to the Availability of Capital

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Risks Related to Other Matters

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None.

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

We regularly evaluate our various facilities and equipment and make capital investments where necessary. In 2022, we spent a total of $176.2 million on capital expenditures, primarily at our Trex Residential facilities, including $85.7 million related to construction of our Arkansas facility, $39.2 million related to general plant cost reduction initiatives at our Virginia and Nevada facilities, $19.1 million related to our new corporate office development, and $17.6 million for general support, safety and environmental initiatives.

In October 2021, we announced plans to add a third U.S.-based Trex Residential manufacturing facility located in Little Rock, Arkansas, that will sit on approximately 300 acres of land. The development approach for the new campus will be modular and calibrated to demand trends for Trex Residential outdoor living products. Construction began on the new facility in the second quarter of 2022, and in July 2022, we entered into a design-build agreement. As previously announced, we anticipate spending approximately $400 million on the facility and the budget for the design-build agreement is contained within this amount. Construction for the new facility will be funded primarily through our ongoing cash generation or our line of credit.

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.

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.

Not applicable.

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PART II

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, 2022 in accordance with Item 703 of Regulation S-K:

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, 2017 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, 2018, 2019, 2020, 2021, and 2022.

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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 6, 2023, there were approximately 142 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 2022, 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.

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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 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 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 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

General. The Company is the world’s largest manufacturer of high-performance, low-maintenance wood-alternative decking and residential 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

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proprietary process that combines reclaimed wood fibers and recycled polyethylene. The Company is focused on using renewable resources within our Trex Residential segment. Also, through December 30, 2022, the Company provided custom-engineered commercial railing and staging systems for the commercial and multi-family market, including sports stadiums and performing arts venues. During the three years in the period ended December 31, 2022, the Company operated in two reportable segments: Trex Residential Products (Trex Residential), the Company’s principal business based on net sales, and Trex Commercial Products (Trex Commercial). On December 30, 2022, we completed the sale of substantially all of the assets of our wholly-owned subsidiary and reportable segment, Trex Commercial.

Outdoor living remains one of the fastest growing categories within the repair and remodel sector, and the strength of the Trex Residential 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 remain focused on ensuring the capacity to service our Trex Residential channel partners is aligned with both current demand and expected future growth. In October 2021, we announced plans to add a third U.S.-based Trex Residential manufacturing facility located in Little Rock, Arkansas, that will sit on approximately 300 acres of land. The development approach for the new campus will be modular and calibrated to demand trends for Trex Residential outdoor living products. Construction began in the second quarter of 2022, and in July 2022, we entered into a design-build agreement. As previously announced, we anticipate spending approximately $400 million on the facility and the budget for the design-build agreement is contained within this amount. Construction will be funded primarily through our ongoing cash generation or our line of credit.

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 improvements to raw material processing. At the same time, we intend to expand our marketing campaigns, continue highlighting the advantages of Trex Residential 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 Residential is the world’s largest manufacturer of wood-alternative composite decking and railing products marketed under the brand name Trex^® and 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 through Trex Residential:

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Trex Commercial offered modular and architectural railing and staging systems and solutions for the commercial and multifamily market, including sports stadiums and performing arts venues.

Operational Highlights:

Sale of Substantially All of the Assets of Trex Commercial Products, Inc. On December 30, 2022, we completed the sale of substantially all of the assets of our wholly-owned subsidiary and reportable segment, Trex Commercial, for net proceeds of $7.3 million. The divestiture of Trex Commercial reflects our decision to focus on driving the most profitable growth strategy for the Company and its shareholders through the execution of our outdoor living strategy. With the sale complete, we will dedicate our resources to accelerating conversion to composites from wood and further strengthen our leadership position in the outdoor living category. The divestiture did not represent a strategic shift with a major effect on the Company’s operations and financial results. As such, the results of operations of Trex Commercial are consolidated in the Company’s results of operations for the year ended December 31, 2022, through the date of sale. Refer to Note 17, Segment Information, for additional information on the Trex Commercial segment.

Trex Residential New Product. On May 16, 2022, we announced the expansion of our premium Trex Residential decking line with the introduction of Transcend^® Lineage^™. The new Transcend Lineage boards feature an elevated aesthetic with subtle, elegant graining, available in two new color options that expand the Transcend collection with nature-inspired tones and texturing that today’s homeowners are seeking. Like all Trex Residential decking, Lineage boards are made primarily from recycled and reclaimed content and engineered with a proprietary, high-traffic formulation and ultra-durable integrated shell. Transcend Lineage decking launched in mid-May and will be sold nationwide through Trex Residential dealers and major home centers. Production and sale of the new Transcend Lineage boards began in May 2022.

Trex Residential Arkansas Manufacturing Facility. Construction began on the new Trex Residential manufacturing facility located in Arkansas in the second quarter 2022. The new campus will sit on approximately 300 acres of land and will address increased demand for Trex Residential outdoor living products. The development approach for the new campus will be modular and calibrated to demand trends for Trex Residential outdoor living products. In July 2022, the Company entered into a design-build agreement and, as previously announced, anticipates spending approximately $400 million on the facility. The budget for the design-build agreement is contained within this amount.

Trex Residential NexTrex^® Grassroots Movement. In August 2022, Trex Residential launched its NexTrex Grassroots Movement to broaden its recycling initiative to enlist communities and organizations to partner in its robust recycling efforts. The initiative provides a turnkey framework for municipalities, universities, nonprofits and other qualifying businesses to serve as centralized drop-off locations for recycling polyethylene plastic film while earning funds for their organizations. Organizations approved for participation in the NexTrex program can earn funding by serving as drop-off locations where community members can recycle their discarded plastic film packaging. Each grassroots partner is equipped with a baler, which is housed on site for use in bundling and weighing recycled plastic material. Trex will pick up and transport the material to its manufacturing facilities in Virginia or Nevada, where it will begin its new life as high-performance Trex Residential composite decking.

Trex Residential Earns Top Honors in Builder Brand Use Study. For the fourth time in the 15-year history of the Builder Brand Use Study, we earned top honors across all of the measured criteria for the Composite/PVC Decking category and outperformed all other brands in the Deck Railing category as well. The annual Builder Brand Use Study measures the attitudes of builders, developers, and contractors toward the products they recognize, use, and trust. The results of this year’s study are based on input from more than 850 building professionals who, for the 15th consecutive year, voted Trex #1 for “brand familiarity,” “brand used during the past two years,” and “brand used most” in the Composite/PVC Decking category. Trex also secured top honors for the same criteria in the Deck Railing category. Additionally, Trex received the highest score for “Product Quality” among the 27 composite and PVC decking brands included in the study.

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Publication of 2021 Environmental, Social and Governance Report. On June 23, 2022, we published its 2021 Environmental, Social and Governance (ESG) report. The annual ESG report highlights how we are “Building a Better Tomorrow Together” through a broad spectrum of initiatives to address its most material ESG priorities. Highlights include:

Strategic Investments. During 2022, we made strategic investments to enhance the support of our Trex Residential brand and channel partners, including the debut of our new “We See It Too” marketing campaign. We also launched Trex Academy, an online multimedia content hub dedicated to helping the Trex Residential Do-It-Yourself customer bring their deck dreams to life by providing how-to content.

Russian Invasion of Ukraine. The conflict between Russia and Ukraine has not directly affected our business and results of operations. We have no operations in Russia or Ukraine but continue to monitor the potential economic impact of the conflict on supply chains, commodity and fuel prices, and prices of raw materials. We cannot predict the impact of the continued conflict on the global economy, our industry or our business.

Highlights and Financial Performance for the Twelve Months Ended December 31, 2022:

Capital expenditures. In 2022, we spent a total of $176.2 million on capital expenditures, primarily at our Trex Residential facilities, including $85.7 million related to construction of our Arkansas facility, $39.2 million related to general plant cost reduction initiatives at our Virginia and Nevada facilities, $19.1 million related to our new corporate office development, and $17.6 million for general support, safety and environmental initiatives.

Repurchase of common shares. We repurchased 6.5 million shares of our outstanding common stock in 2022 under our Stock Repurchase Program.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

Our significant accounting policies are described in Note 2 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

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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 Trex Residential 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.

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 continue to receive and settle claims for Trex Residential products manufactured at our Nevada facility prior to 2007 that exhibit surface flaking and maintain a warranty reserve to provide for the settlement of these claims. Estimating the warranty reserve for surface flaking claims requires management to estimate (1) the number of claims to be settled with payment and (2) the average cost to settle each claim.

To estimate the number of surface flaking claims to be settled with payment, we utilize actuarial techniques to quantify both the expected number of claims to be received and the percentage of those claims that will ultimately require payment (collectively, elements). Estimates for these elements are quantified using a range of assumptions derived from claim count history and the identification of factors influencing the claim counts. The cost per claim varies due to a number of factors, including the size of affected decks, the availability and type of replacement material used, the cost of production of replacement material and the method of claim settlement.

We monitor surface flaking claims activity each quarter for indications that our estimates require revision. Typically, a majority of surface flaking claims received in a year are received during the summer outdoor season, which spans the second and third quarters. It has been our practice to utilize the actuarial techniques discussed above during the third quarter, after a significant portion of all claims has been received for the fiscal year and variances to annual claims expectations are more meaningful.

The number of incoming claims received in the year ended December 31, 2022 was significantly lower than the number of claims received in the year ended December 31, 2021, and lower than our expectations for 2022. Average cost per claim experienced in the year ended December 31, 2022 was significantly higher than that experienced in the year ended December 31, 2021, and higher than our expectations for 2022. The elevated average cost per claim experienced in the year ended December 31, 2022, was primarily the result of the closure of three large claims, which were considered in our estimation of the surface flaking reserve. We believe the reserve at December 31, 2022 is sufficient to cover future surface flaking obligations.

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Our analysis is based on currently known facts and a number of assumptions, as discussed above, and current expectations. Projecting future events such as the number of claims to be received, the number of claims that will require payment and the average cost of claims could cause the actual warranty liabilities to be higher or lower than those projected, which could materially affect our financial condition, results of operations or cash flows. We estimate that the annual number of claims received will continue to decline over time and that the average cost per claim will increase slightly, primarily due to inflation. If the level of claims received or average cost per claim differs materially from expectations, it could result in additional increases or decreases to the warranty reserve and a decrease or increase in earnings and cash flows in future periods. We estimate that a 10% change in the expected number of remaining claims to be settled with payment or the expected cost to settle claims may result in approximately a $1.6 million change in the surface flaking warranty reserve.

The following table details surface flaking claims activity related to our residential product warranty:

For additional information about product warranties, see Notes 2 and 19 to the Consolidated Financial Statements appearing elsewhere in this report.

Goodwill. We evaluate the recoverability of goodwill in accordance with Accounting Standard Codification (ASC) Topic 350, “Intangibles—Goodwill and Other,” annually or more frequently if an event occurs or circumstances change in the interim that would more likely than not reduce the fair value of the asset below its carrying amount. We evaluate the recoverability of goodwill at the reporting unit level. Through December 30, 2022 and during the two years ended December 31, 2021, we determined that the Company had three reporting units: a residential reporting unit in the Trex Residential reportable segment, and a commercial railing reporting unit and a staging reporting unit in the Trex Commercial reportable segment. We completed the sale of our wholly-owned subsidiary, Trex Commercial Products, Inc., on December 30, 2022. Trex Commercial Products, Inc. had been a reportable segment of the Company. Goodwill is considered impaired when the carrying amount of a reporting unit exceeds its fair value, and an impairment loss is recognized in an amount equal to that excess but limited to the total amount of goodwill allocated to that reporting unit. We first assess qualitative factors to determine if it is more likely than not that the fair value of the reporting unit is less than its carrying amount, including goodwill. Qualitative factors we consider include events and circumstances such as macroeconomic conditions, industry and market considerations, cost factors, overall financial performance, and other relevant Company-specific events. We evaluate, based on the weight of evidence, the significance of all identified events and circumstances in the context of determining whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. Weighing the effect of various positive and negative factors is challenging and requires the use of significant judgment. The weight we place on each factor depends on certain conditions, including uncertainty about future events. If different conditions exist in future periods, future impairment charges could result.

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If the qualitative assessment indicates that the carrying amount of the reporting unit exceeds its fair value, including goodwill, we are then required to perform a quantitative goodwill impairment test. The quantitative goodwill impairment test, used to identify both the existence of impairment and the amount of impairment loss, compares the fair value of a reporting unit with its carrying amount, including goodwill. The fair value of a reporting unit refers to the price that would be received to sell the unit as a whole in an orderly transaction between market participants at the measurement date. If the carrying amount of a reporting unit is in excess of the estimated fair value of that reporting unit, a goodwill impairment charge is recognized in the amount by which the reporting unit’s carrying amount exceeds its fair value, but not to exceed the total goodwill assigned to the reporting unit.

We measure the fair value of a reporting unit based on a combination of the Income Approach (i.e., the Discounted Cash Flow Method) and a Market Approach. The Discounted Cash Flow Method is a multiple period discounting model in which the fair value of the reporting units are determined by discounting the projected free cash flows using an appropriate discount rate and indicates the fair value of the reporting units based on the present value of the cash flows that the reporting unit is expected to generate in the future. Significant estimates in the Discounted Cash Flow Method include: the weighted average cost of capital (or discount rate); long-term rate of growth and profitability of the business (residual growth rate); and working capital effects. The Market Approach uses prices and other relevant information generated by market transactions involving identical or comparable assets, liabilities or a group of assets and liabilities, such as a business. Significant estimates in the Market Approach model may include identifying appropriate market multiples and assessing earnings before interest, income taxes, depreciation and amortization (EBITDA) in estimating the fair value of the reporting units. The use of different assumptions, estimates or judgements, including estimated future cash flows and the discount rate used to discount estimated cash flows to their net present value, could materially increase or decrease the fair value of the reporting unit and impact our assessment of any goodwill impairment charges. Also, if different conditions exist in future periods, future impairment charges could result.

Revenue Recognition

Trex Residential Products

Trex Residential 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 Residential 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 Residential 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 Residential 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 Residential 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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Trex Commercial Products

Trex Commercial generated revenue from the manufacture and sale of its custom, modular and architectural railing and staging systems. All of its revenues were from fixed-price contracts with customers. Trex Commercial contracts had a single performance obligation as the promise to transfer the individual goods or services was not separately identifiable from other promises in the contract and was, therefore, not distinct.

Trex Commercial satisfied its performance obligation over time as work progressed because control was transferred continuously to its customers. Revenue and estimated profit were recognized over time based on the proportion of actual costs incurred to date relative to total estimated costs at completion to measure progress toward satisfying the performance obligation. Incurred costs represent work performed, which corresponds with, and thereby best depicts, the transfer of control to the customer. Incurred costs included all direct material, labor, subcontract and certain indirect costs. The Company reviewed and updated its estimates regularly and recognized adjustments in estimated profit on contracts under the cumulative catch-up method. Under this method, the impact of the adjustment on revenue and estimated profit to date on a contract is recognized in the period the adjustment is identified. If at any time the estimate of contract profitability indicated an anticipated loss on the contract, the Company recognized the total loss in the period it was identified. During the year ended December 31, 2022, no adjustment to any one contract was material to the Company’s Consolidated Financial Statements and no material impairment loss on any contract was recorded.

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, consumer spending and preferences, the impact of any supply chain disruptions, economic conditions, and any adverse effects from global health pandemics and geopolitical conflicts.

Strong sales growth in the first and second quarters of 2022 reflected an increase in Trex Residential net sales driven by pricing actions taken in 2021 and 2022, volume growth that continued to reflect strong secular trends in the outdoor living category, continued execution of our wood-to-composite market strategy share conversion, and channel inventory build to support historically high growth rates. The channel inventory build was due in part to expected consumer demand consistent with what was seen in 2020 and 2021, but also was a consequence of improved product availability following more than two years of capacity constraints and product allocations.

However, towards the end of June Trex Residential experienced a reduction in demand from its distribution partners, spurred by concerns over a potential easing in consumer demand due to rising interest rates, declining consumer sentiment and expectations of a general slowing in the economy. As a result, beginning in the third quarter Trex Residential’s channel partners met demand partially through inventory drawdown. The drawdown negatively impacted third and fourth quarter sales. In response to this changed environment, Trex Residential immediately took measures to better align its cost structure with current demand by decreasing production levels, right sizing the employee base, and focusing on cost efficiency programs.

Net Sales. Net sales consist of sales and freight, net of returns and discounts. The level of net sales is principally affected by sales volume and the prices paid for Trex products. The operating results for Trex Residential 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 Residential 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

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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. In addition, the operating results for Trex Commercial have not historically varied from quarter to quarter as a result of seasonality, but are driven by the timing of individual projects, which may vary significantly each 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.

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, 2022 compared to the year ended December 31, 2021.

Year Ended December 31, 2022 Compared To Year Ended December 31, 2021

Net Sales

Total net sales in 2022 decreased $90.9 million, or 7.6%, compared to total net sales in 2021, due to a decrease in Trex Residential and Trex Commercial net sales of $79.7 million and $11.2 million, respectively. The decrease in Trex Residential net sales was due primarily to an 18.2% reduction in volume, offset by a 13.6% increase in pricing, The decrease in Trex Residential volume was primarily due to a decline in demand beginning in the third quarter of 2022 as our distribution partners serviced demand requirements primarily through inventory drawdowns rather than reorders. The increase in pricing was due to price increases taken in 2021 and 2022 on certain products to address inflationary pressures across many key raw materials, labor and transportation.

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Gross Profit

Gross profit as a percentage of net sales, gross margin, was 36.5% in 2022 compared to 38.5% in 2021. Gross margin for Trex Residential and Trex Commercial in 2022 were 37.7% and 8.9%, respectively, compared to 39.3% and 22.0%, respectively, in 2021. Gross margin at Trex Residential was unfavorably impacted primarily by reduced production volume and inflationary pressures, offset by pricing realization increases on certain product lines, right sizing our employee base, and other actions to better align our cost structure with current demand.

Selling, General and Administrative Expenses

Selling, general and administrative expenses increased $2.2 million in 2022 compared to 2021 primarily resulting from a $12.6 million increase in branding and marketing expenses. The increase was offset by a $10.3 million decrease in personnel and personnel related expenses.

Loss on Sale

On December 30, 2022, we completed the sale of substantially all of the assets of our wholly-owned subsidiary and reportable segment, Trex Commercial, for net proceeds of $7.3 million. The divestiture reflects our decision to focus on driving the most profitable growth strategy for the Company and its shareholders through the execution of our outdoor living strategy. With the sale complete, we will dedicate our resources to accelerating conversion to composites from wood and further strengthen our leadership position in the outdoor living category. The sale resulted in a loss on sale of $15.4 million and is reported in the Consolidated Statements of Comprehensive Income.

Goodwill Impairment Loss

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During the fourth quarter of 2021, our annual goodwill impairment testing resulted in the recognition of an impairment charge to goodwill at our commercial railing reporting unit and our staging reporting unit within the Trex Commercial reportable segment of $42.5 million and $11.8 million, respectively. For fiscal year 2021, the Company determined that it was necessary to perform the goodwill impairment test for our railing and staging reporting units utilizing the quantitative assessment. We performed a quantitative assessment primarily due to a reduction in project commitments, which adversely impacted project backlog and forecasted net sales and EBITDA. The reduction in project commitments was influenced by a continued delay in new projects due to lingering uncertainty created in the commercial railing and staging markets by the COVID-19 virus. The delay in new projects, coupled with the Company’s successful fulfillment of its pre-pandemic projects, resulted in lower project backlog and reduced forecasted net sales and EBITDA, which became apparent in the fourth quarter of 2021.

Gain on Insurance Proceeds

In March 2021, an electrical fire occurred at one of our manufacturing buildings in our Virginia complex. No injuries occurred from the event. The building was temporarily off-line while damage to the building’s electrical systems was addressed. Our insurance covered repairs, incremental direct costs to serve our customers, and losses in operating income from the loss in net sales. During 2021, gains on insurance proceeds primarily related to the settlement from our insurance company of $6.8 million related to the fire at the Virginia facility.

Provision for Income Taxes

The effective tax rate for 2022 was 25.2% compared to the effective tax rate for 2021 of 24.2%. The increase in the effective tax rate was driven primarily by a reduction in excess tax benefits resulting from the vesting of outstanding share-based employee compensation.

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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 and EBITDA margin (non-GAAP):

Total EBITDA decreased 6.5% to $291 million for 2022 compared to $311 million for 2021. The decrease was due to a $50.2 million decrease in Trex Residential EBITDA, primarily driven by a decrease in net sales and gross profit. The decrease was offset in part by an increase in EBITDA at Trex Commercial, which resulted primarily from a fourth quarter 2021 goodwill impairment charge of $54.2 million, offset by a fourth quarter 2022 loss on sale of $15.4 million.

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Year Ended December 31, 2021 Compared To Year Ended December 31, 2020

The Company hereby incorporates by reference the financial results from fiscal year 2020 and the comparison of financial results from fiscal year 2021 to fiscal year 2020 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, 2021 and filed with the U.S. Securities and Exchange Commission on February 28, 2022.

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, 2022, 2021, and 2020 (in thousands):

Operating Activities

Cash provided by operating activities in 2022 were primarily impacted by lower net sales and gross profit at Trex Residential, a loss on sale of Trex Commercial Products, Inc., and an increase in inventories, offset by an decrease in accounts receivable.

Investing Activities

In 2022, cash used in investing activities for capital expenditures was $176.2 million, primarily at our Trex Residential facilities, including $85.7 million related to construction of our Arkansas facility, $39.2 million related to general plant cost reduction initiatives at our Virginia and Nevada facilities, $19.1 million related to our new corporate office development, and $17.6 million for general support, safety and environmental initiatives. Cash provided by investing activities in 2022 included $7.3 million in proceeds from the sale of Trex Commercial.

Financing Activities

Net cash used in financing activities in 2022 consisted primarily of $398.4 million in repurchases of our common stock under our Stock Repurchase Program, offset by net borrowings under our revolving credit facility of $222 million.

Stock Repurchase Program. On February 16, 2018, the Board of Directors adopted a stock repurchase program of up to 11.6 million shares of the Company’s outstanding common stock (Stock Repurchase Program). For the year ended December 31, 2022, the Company repurchased 6.5 million shares under the Stock Repurchase Program.

Inventory in Distribution Channels. We sell our Trex Residential decking and railing products through a tiered distribution system. We have over 50 distributors worldwide and two national retail merchandisers to

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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 Residential have historically varied from quarter to quarter. 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 practice, Trex Residential 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 May 18, 2022. Our Fourth Amended and Restated Credit Agreement (Fourth Amended Credit Agreement) provides us with revolving loan capacity in a collective maximum principal amount of $250 million from January 1 through June 30 of each year, and a maximum principal amount of $200 million from July 1 through December 31 of each year throughout the term, which ends November 5, 2024.

On May 26, 2020, the Company entered into a First Amendment to the Original Credit Agreement (the First Amendment) to provide for an additional $100 million line of credit. As a matter of convenience, the parties incorporated the amendments to the Original Credit Agreement made by the First Amendment into a new Fourth Amended and Restated Credit Agreement (New Credit Agreement). In the New Credit Agreement, the revolving commitments under the Original Credit Agreement are referred to as Revolving A Commitments and the new $100 million line of credit is referred to as Revolving B Commitments. In the New Credit Agreement, all of the material terms and conditions related to the original line of credit (Revolving A Commitments) remained unchanged from the Original Credit Agreement.

The Company entered into the First Amendment, as borrower; Trex Commercial Products, Inc. (Trex Commercial), as guarantor; Bank of America, N.A. (BOA), as a Lender, Administrative Agent, Swing Line Lender and L/C Issuer; and certain other lenders including Wells Fargo Bank, N.A. (Wells Fargo), who is also Syndication Agent; Truist Bank (Truist); and Regions Bank (Regions) (each, a Lender and collectively, the Lenders), arranged by BofA Securities, Inc. as Sole Lead Arranger and Sole Bookrunner. The First Amendment further provides that the New Credit Agreement is amended and restated by changing Schedule 2.01 to add applicable Lender percentages related to the Revolving B Commitment for BOA of 47.5%, Well Fargo of 28.0% and Regions of 24.5%.

The Company’s revolving credit facility executed November 5, 2019 was completely replaced by the Company’s revolving credit facility executed May 18, 2022.

Indebtedness On and After May 18, 2022. On May 18, 2022, the Company, as borrower; Trex Commercial Products, Inc. (Trex Commercial), as guarantor; Bank of America, N.A. (BOA), as a Lender, Administrative Agent, Swing Line Lender and L/C Issuer; Wells Fargo Bank, National Association (Wells Fargo), as lender and Syndication Agent; Regions Bank, PNC Bank, National Association, and TD Bank, N.A. (each, a Lender and collectively, the Lenders), arranged by BofA Securities, Inc. as Sole Lead Arranger and Sole Bookrunner, entered into a Credit Agreement (Credit Agreement) 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.

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The Credit Agreement provides the Company, in the aggregate, the ability to borrow an amount up to the Loan Limit during the Term. The Company is not obligated to borrow any amount under the Loan Limit. Within the Loan Limit, the Company may borrow, repay and reborrow at any time or from time to time while the Notes are in effect. Base Rate Loans (as defined in the Credit Agreement) under the Revolving Loans 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.

The Company and BofA Securities, Inc. as a sustainability coordinator, are entitled to establish specified key performance indicators (KPIs) with respect to certain environmental, social and governance targets of the Company and its subsidiaries. The sustainability coordinator and the Company may amend the Credit Agreement for the purpose of incorporating the KPIs and other related provisions, unless the Lenders object to such amendment on or prior to the date that is ten business days after the date on which such amendment is posted for review by the Lenders. Based on the performance of the Company and its subsidiaries against the KPIs, certain adjustments (increase, decrease or no adjustment) to otherwise applicable pricing will be made; provided that the amount of such adjustments shall not exceed certain aggregate caps as in the definitive loan documentation.

Under the terms of the Security and Pledge Agreement, the Company and Trex Commercial, 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 to BOA, as Administrative Agent for the Lenders, 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 December 22, 2022. As of December 22, 2022, the Company entered into a First Amendment to the Credit Agreement (First Amendment) by and among the Company, as borrower, the guarantors party thereto; Bank of America, N.A. (BOA), as a Lender, Administrative Agent, Swing Line Lender and L/C Issuer; TD Bank, N.A. as lender and Syndication Agent; Regions Bank, PNC Bank, National Association, and Wells Fargo Bank, National Association (each, a Lender and collectively, the Lenders), arranged by BofA Securities, Inc. as Sole Lead Arranger and Sole Bookrunner, amending that certain Credit Agreement dated as of May 18, 2022, by and among the Company, as borrower, the guarantors party thereto, BOA, as a Lender, Administrative Agent, Swing Line Lender and L/C Issuer and the other lenders identified therein (as so amended, the “Credit Agreement”). 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 ends 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.

As of December 22, 2022, the Credit Agreement was amended and restated to refer to this 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 Credit Agreement continues to include sublimits under the Revolving A Loan 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 under Revolving A Loan are for the purpose of raising working capital and supporting general business operations.

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The Notes provide the Company, in the aggregate, the ability to borrow an amount up to the Revolving A Loan Limit during the Revolving A Loan Term 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 are in effect. With respect to Revolving B Loans, 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 between1.20% 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%.

At December 31, 2022, we had $222 million in outstanding borrowings under the revolving credit facility and borrowing capacity under the facility of $328 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, 2022. Failure to comply with the financial covenants could be considered a default of repayment obligations and, among other remedies, could accelerate payment of any amounts outstanding.

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, 2022, we have purchase obligations under material supply contracts of $53 million for the year ending December 31, 2023, $26.1 million in 2024, $13.3 million in 2025, and $5.6 million in 2026. 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, 2022, we have operating lease liabilities of $7.6 million for the year ending December 31, 2023, $20.7 million for the years 2024 through 2027 and $4.8 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. In October 2021, we announced plans to add a third U.S.-based Trex Residential manufacturing facility located in Little Rock, Arkansas. The new campus will sit on approximately 300 acres of land and will address demand for Trex Residential outdoor living products. The development approach for the new campus will be modular and calibrated to demand trends for Trex Residential outdoor living products. Construction began on the new facility in the second quarter 2022, and in July 2022, the Company entered into a design-build agreement. As previously announced, the Company anticipates spending approximately $400 million on the facility and the budget for the design-build agreement is contained within this amount. Construction for the new facility will be funded primarily through the Company’s ongoing cash generation or its line of credit.

Our capital expenditure guidance for 2023 is $130 million to $140 million. In addition to our capital expenditure program, our capital allocation priorities include expenditures for internal growth opportunities,

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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.

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, 2022, we had $222 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, 2022.

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.

None.

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, 2022. 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, 2022, 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, 2022, 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, 2022, has been audited by Ernst & Young LLP, an independent registered public accounting firm, as stated in their report, which follows hereafter.

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, 2022, 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, 2022, 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 2022 consolidated financial statements of the Company and our report dated February 27, 2023 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.

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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

Tysons, Virginia

February 27, 2023

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Trex Residential Arkansas Manufacturing Facility

In October 2021, we announced plans to add a third U.S.-based Trex Residential manufacturing facility located in Little Rock, Arkansas. The new campus will sit on approximately 300 acres of land and will address increased demand for Trex Residential outdoor living products. The development approach for the new campus will be modular and calibrated to demand trends for Trex Residential outdoor living products. Construction began on the new facility in the second quarter 2022, and in July 2022, the Company entered into a design-build agreement. As previously announced, the Company anticipates spending approximately $400 million on the facility and the budget for the design-build agreement is contained within this amount. Construction for the new facility will be funded primarily through the Company’s ongoing cash generation or its line of credit.

Sale of Trex Commercial Products, Inc.

On December 30, 2022, we completed the sale of substantially all of the assets of our wholly-owned subsidiary and reportable segment, Trex Commercial, for net proceeds of $7.3 million. The divestiture reflects our decision to focus on driving the most profitable growth strategy for the Company and its shareholders through the execution of our outdoor living strategy. With the sale complete, we will dedicate our resources to accelerating conversion to composites from wood and further strengthen our leadership position in the outdoor living category. The divestiture of this segment did not represent a strategic shift with a major effect on the Company’s operations and financial results. As such, the results of operations of Trex Commercial are consolidated in the Company’s results of operations for the year ended December 31, 2022, through the date of sale. Refer to Note 17, Segment Information, for additional information on the Trex Commercial segment.

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PART III

Information responsive to this Item 10 is incorporated herein by reference to our definitive proxy statement for our 2023 annual meeting of stockholders, which we will file with the SEC on or before 120 days after our 2022 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., 160 Exeter Drive, Winchester, Virginia 22603-8605. 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.

Information responsive to this Item 11 is incorporated herein by reference to our definitive proxy statement for our 2023 annual meeting of stockholders, which we will file with the SEC on or before 120 days after our 2022 fiscal year-end.

Information responsive to this Item 12 is incorporated herein by reference to our definitive proxy statement for our 2023 annual meeting of stockholders, which we will file with the SEC on or before 120 days after our 2022 fiscal year-end.

Information responsive to this Item 13 is incorporated herein by reference to our definitive proxy statement for our 2023 annual meeting of stockholders, which we will file with the SEC on or before 120 days after our 2022 fiscal year-end.

Information responsive to this Item 14 is incorporated herein by reference to our definitive proxy statement for our 2023 annual meeting of stockholders, which we will file with the SEC on or before 120 days after our 2022 fiscal year-end.

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PART IV

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

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

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.

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