Trex Company, Inc.

2500 Trex Way

Winchester, Virginia 22601

Notice of Annual Meeting of Stockholders

May 7, 2024

To our stockholders:

Notice is hereby given that the 2024 annual meeting of stockholders of Trex Company, Inc. will be held at Trex University, 331 Apple Valley Road, Winchester, Virginia, on Tuesday, May 7, 2024, at 9:00 a.m., local time, for the following purposes:

Only stockholders of record at the close of business on March 11, 2024 will be entitled to notice of and to vote at the annual meeting or any adjournment or postponement thereof.

All stockholders are cordially invited to attend this meeting.

We have elected to adopt the U.S. Securities and Exchange Commission rule that allows companies to furnish their proxy materials over the Internet. As a result, we are mailing a Notice Regarding the Availability of Proxy Materials (the “Notice of Availability”) to our stockholders instead of a paper copy of this Proxy Statement and our 2023 Annual Report. The Notice of Availability contains instructions on how to access and review those documents over the Internet. We believe that this process will allow us to provide our stockholders with the information they need in a timelier manner, while reducing the environmental impact and lowering the costs of printing and distributing our proxy materials. Stockholders who receive a Notice of Availability by mail and would like to receive a printed copy of our proxy materials should follow the instructions for requesting such materials included on the Notice of Availability.

Your vote is very important to us. Whether or not you plan to attend the meeting in person, your shares should be represented and voted. To vote, please complete and return your proxy card, or vote by telephone or via the Internet by following the instructions on your Notice of Availability. Returning a proxy card or otherwise submitting your proxy does not deprive you of your right to attend the annual meeting and vote in person.

By Order of the Board of Directors,

Amy M. Fernandez

Senior Vice President, Chief Legal Officer

and Secretary

Dated: March 25, 2024

Table of Contents

Proxy Summary

This summary highlights information contained elsewhere in this Proxy Statement. This summary does not contain all of the information you should consider. Please read the entire Proxy Statement carefully before voting.

Board of Directors

The following table provides summary information about each director.

Director Occupation				Age				Director   since				Board   Independent				Other public boards				Committee memberships												Up for re-election at current Annual Meeting
																				AC				CC				NCGC
James E. Cline* Retired; Former President and CEO, Trex Company, Inc.				72				2015				Yes				1																Yes
Gena C. Lovett, Ph.D Former Vice President, Manufacturing, Safety and Quality, Defense, Space and Security of Boeing Company				61				2021				Yes				2																Yes
Melkeya McDuffie CHRO, Bright Horizons				50				2023				Yes				0																Yes
Patricia B. Robinson** Retired; Former President of Mead School and Office Products				71				2000				Yes				0																Yes
Jay M. Gratz Retired; Former Executive Vice President and Chief Financial Officer, Ryerson Inc.				71				2007				Yes				0																No
Ronald W. Kaplan*** Retired; Former President and CEO, Trex Company, Inc.				72				2008				Yes				1																No
Gerald Volas Retired; Former CEO, TopBuild Corp.				69				2014				Yes				0																No
Bryan H. Fairbanks President and CEO, Trex Company, Inc.				54				2020				No				0																No
Kristine L. Juster CEO, Conair LLC				60				2019				Yes				0																No

AC		Audit Committee				Chair
CC		Compensation Committee				Member
NCGC		Nominating/Corporate Governance Committee				Financial expert

Trex Company, Inc.

2500 Trex Way

Winchester, Virginia 22601

Annual Meeting of Stockholders

May 7, 2024

Proxy Statement

General Information

This Proxy Statement is furnished in connection with the solicitation of proxies by the Board of Directors (the “Board”) of Trex Company, Inc. (the “Company”, “we” or “our”) for use at the Company’s 2024 annual meeting of stockholders to be held at Trex University, 331 Apple Valley Road, Winchester, Virginia, on Tuesday, May 7, 2024 at 9:00 a.m., local time. The purpose of the annual meeting and the matters to be acted upon are set forth in the accompanying notice of annual meeting.

Only stockholders of record at the close of business on March 11, 2024, the record date for the annual meeting (the “record date”), will be entitled to notice of and to vote at the annual meeting. As of March 11, 2024, we had 108,687,117 shares of common stock outstanding, which are our only securities entitled to vote at the annual meeting. Each share of common stock is entitled to one vote.

A complete list of stockholders entitled to vote at the annual meeting will be open to the examination of any stockholder, for any purpose germane to the meeting, during ordinary business hours for a period of ten days ending on the day before the meeting, at the Company’s offices at 2500 Trex Way, Winchester, Virginia.

Notice of the Company’s annual meeting was mailed on or about March 25, 2024 to all stockholders as of the record date.

Those stockholders entitled to vote may vote their shares via the Proxy Card, or via the Internet, telephone or mail, following the instructions printed on the Notice of Availability.

Stockholders who receive a Notice of Availability and would like to receive a printed copy of our proxy materials should follow the instructions for requesting such materials included in the Notice of Availability.

From the date of the mailing of the Notice of Availability until the conclusion of the annual meeting, all of the proxy materials will be accessible on the Company’s website at www.trex.com/proxy.

Stockholders who execute proxies may revoke them by giving written notice to our Secretary any time before such proxies are voted. Attendance at the annual meeting shall not have the effect of revoking a proxy unless the stockholder so attending shall, in writing, so notify the Secretary at any time prior to the voting of the proxy at the annual meeting.

The Board does not know of any matter that is expected to be presented for consideration at the annual meeting, other than the election of four directors, a non-binding advisory vote on the compensation of our named executive officers, and ratification of the appointment of our independent registered public accounting firm for the current fiscal year. However, if other matters properly come before the annual meeting, the persons named in the accompanying proxy intend to vote thereon in accordance with their judgment.

We are not engaging any company for the purpose of proxy solicitation in conjunction with this Proxy Statement. We will bear the cost of the annual meeting and the cost of soliciting proxies, including the cost of mailing any proxy materials. In addition to solicitation by mail, our directors, officers and regular employees (who will not be specifically compensated for such services) may solicit proxies by telephone or otherwise. Arrangements will be made with brokerage houses and other custodians, nominees and fiduciaries to forward proxies and proxy material to their principals, and we will reimburse them for their expenses. In addition, we have retained Broadridge Financial Solutions, Inc., or Broadridge, to assist in the mailing, collection, and administration of the proxy.

The 2023 Annual Report to stockholders and the 2023 Form 10-K are not proxy soliciting materials.

All proxies received pursuant to this solicitation will be voted except as to matters where authority to vote is specifically withheld. Where a choice is specified as to the proposal, proxies will be voted in accordance with such specification. If no instructions are given, the persons named in the proxy intend to vote:

A majority of the outstanding shares of common stock entitled to vote on the record date, whether present in person or represented by proxy, will constitute a quorum for the transaction of business at the annual meeting and any adjournment or postponement thereof. Abstentions and broker non-votes (which occur with respect to any proposal when a broker holds shares of a customer in its name and is not permitted to vote on that proposal without instruction from the beneficial owner of the shares and no instruction is given) will be counted as present or represented for purposes of establishing a quorum for the transaction of business.

The following vote shall be required for approval of each matter:

Security Ownership

The following table presents, as of March 11, 2024, information based upon the Company’s records and filings with the U.S. Securities and Exchange Commission (“SEC”) regarding beneficial ownership of its common stock by the following persons:

∎ each person known to the Company to be the beneficial owner of more than 5% of the common stock;

∎ each director and each nominee to the Board;

∎ each executive officer of the Company named in the Summary Compensation Table following the Compensation Discussion and Analysis section of this Proxy Statement; and

∎ all directors and executive officers of the Company as a group.

As of March 11, 2024, there were 108,687,117 shares of common stock outstanding.

The following information has been presented in accordance with SEC rules and is not necessarily indicative of beneficial ownership for any other purpose. Under SEC rules, beneficial ownership of a class of capital stock as of any date includes any shares of such class as to which a person, directly or indirectly, has or shares voting power or investment power as of such date and also any shares as to which a person has the right to acquire such voting or investment power as of or within 60 days after such date through the exercise of any stock option, stock appreciation right, warrant or other right, without regard to whether such right expires before the end of such 60-day period or continues thereafter. If two or more persons share voting power or investment power with respect to specific securities, all such persons may be deemed to be the beneficial owners of such securities.

Election of Directors

(Proposal 1)

The Company’s Restated Certificate of Incorporation, as amended, provides that the Board is to be divided into three classes of directors, with the classes to be as nearly equal in number as possible. The current terms of office of the three current classes of directors expire at this annual meeting, at the annual meeting of stockholders in 2025 and at the annual meeting of stockholders in 2026, respectively. Upon the expiration of the term of office of each class, the nominees for such class will be elected for a term of three years to succeed the directors whose terms of office expire.

In accordance with the recommendation of the Nominating/Corporate Governance Committee, Mr. Cline, Ms. Lovett, Ms. McDuffie and Ms. Robinson have been nominated by the Board for election to the class with a three-year term that will expire at the annual meeting of stockholders in 2027. These nominees are incumbent directors.

Approval of the nominees requires the affirmative vote of a majority of the votes cast in favor of such nominee at the annual meeting. The term “Majority” for purposes of election of directors means that a nominee receives more votes in favor of such nominee than are cast against such nominee by the holders of shares present in person or represented by proxy and entitled to vote at the Annual Meeting. Abstentions and broker non-votes will have no effect on the election of directors. Brokers may vote their shares in favor of directors if they have voting instructions from the beneficial owners of the shares. Unless authority to do so is withheld, it is the intention of the persons named in the proxy to vote such proxy FOR the election of each of the nominees. If any of the nominees should become unable or unwilling to serve as a director, the persons named in the proxy intend to vote for the election of such substitute nominee for director as the Board may recommend. It is not anticipated that any of the nominees will be unable or unwilling to serve as a director.

The Board unanimously recommends that the stockholders of the Company vote FOR the election of the nominees to serve as directors.

Biographical information concerning each of the nominees and each of the directors continuing in office is presented below.

James E. Cline retired as President and Chief Executive Officer of the Company on April 29, 2020 and remains the Chairman. He served as President and Chief Executive Officer of the Company between August 2015 and his retirement in April 2020, as Senior Vice President and Chief Financial Officer between August 2013 and August 2015, and as Vice President and Chief Financial Officer between March 2008 and July 2013. Between July 2005

and December 2007, he served as the President of Harsco GasServ, a division of Harsco Corporation and a manufacturer of containment and control equipment for the global gas industry. Between January 2008 and February 2008, in connection with the purchase of Harsco GasServ by Taylor-Wharton International LLC, which was owned by Windpoint Partners Company, he served as a consultant to the buyers by providing transition management and financial services. Between April 1994 and June 2005, he served as the Vice President and Controller of Harsco GasServ. He served in various capacities with Huffy Corporation between June 1976 and February 1994, including as the Director of Finance of its True Temper Hardware subsidiary, a manufacturer of lawn care and construction products. He has served as a director of Latham Group, Inc., a manufacturer of swimming pools, since March 2019. He received a B.S.B.A. degree in accounting from Bowling Green State University.

Mr. Cline was initially appointed to the Board in August 2015 upon his promotion to President and Chief Executive Officer, and renominated in 2016 and 2018, because the Board believed that the Chief Executive Officer of the Company should serve on the Board, and in 2021, and this year because of his in-depth knowledge and experience as the prior Chief Executive Officer of the Company, his extensive knowledge of the industry in which the Company competes and prior experience as a chief executive officer of a manufacturing company, and because the Board felt it was important to have another member of the Board with significant expertise in this industry.

Gena C. Lovett, Ph.D., served as the Vice President, Manufacturing, Safety and Quality, Defense, Space and Security of The Boeing Company, a manufacturer of airplanes, between July 2015 and June 2019. She served as Global Chief Diversity Officer between January 2012 and June 2015, and as Director, Manufacturing, Forging between July 2007 and January 2012 of Alcoa Corporation, a manufacturer of aluminum. She served in numerous roles with Ford Motor Company, a manufacturer of cars and trucks, between April 1992 and June 2007, most recently as Plant Manager, New Model Programs. She has served as a director of AdvanSix, Inc., a leading integrated producer of nylon solutions, chemical intermediates, and plant nutrients, since September 2021, and as a director of QuantumScape Corporation, a developer of next generation battery technology for electric vehicles, since January 2022. She received a B.A. degree in Criminal Justice from The Ohio State University, a M.B.A. degree from Baker Center for Graduate Studies, and a M.S. degree in Organizational Leadership and a Ph.D. in Values-Driven Leadership from Benedictine University.

Dr. Lovett was appointed to the Board in March 2021, and renominated in 2021, and this year because the Board believed it was important to find and include an additional member with experience in manufacturing and operations. As a company where manufacturing and operations are critical functions, the Board believes this is important experience to have on the Board.

Melkeya McDuffie has served as Chief Human Resources Officer of Bright Horizons (NYSE:BFAM) since June 26, 2023. Prior to this role, from February 2022 to June 2023, Ms. McDuffie was Executive Vice President, Chief Human Resources Officer for Clean Harbors (NYSE:CLH), a leading provider of environmental & industrial services, and from 2020 to June 2022 she was Chief Human Resources Officer at The Wallace Foundation, a large private philanthropic organization. From 2005 to 2020, she held a series of talent management positions at Waste Management, a national leader in Environmental Services, moving up from Regional HR Business Partner to Vice President, Global Organization and Talent Development. Earlier in her career, she held similar positions at Wells Fargo Mortgage, HSBC Finance Corporation, and Quest Diagnostics. Ms. McDuffie received her B.A. in Business and M.B.A. from York St. John University. She also received a certification in Labor Relations from Cornell University and a certification in Global Business from Harvard Business School. She currently is pursuing her Ph.D. in Business Administration at North Central University.

Ms. McDuffie was initially appointed to the Board in April 2023, and renominated this year, because of her experience in corporate strategy and focus on inclusive culture and talent development and her professional experience as an executive leading business-focused people strategies at companies in a variety of industries, including environmental services. As a company that continues to elevate its commitment to employee and organizational development, a performance-based and inclusive culture focused on accountability and collaboration, the Board believes this is important experience to have on the Board. Ms. McDuffie’s background and experience strengthen the Board’s collective qualifications, skills and experience.

Patricia B. Robinson is retired. Ms. Robinson was an independent consultant between 1998 and 2020. Ms. Robinson served in a variety of positions with Mead Corporation, a forest products company, between 1977 and 1998, including President of Mead School and Office Products, Vice President of Corporate Strategy and Planning, President of Gilbert Paper, Plant Manager of a specialty machinery facility and Product Manager for new packaging product introductions. Ms. Robinson received a B.A. degree in economics from Duke University and a M.B.A. degree from the Darden School at the University of Virginia.

Ms. Robinson was initially appointed to the Board in November 2000, and renominated in 2003, 2006, 2009, 2012, 2015, 2018, 2021, and this year due to her professional experience as a President of a consumer products company and her experience with strategic planning and new product introductions. As a consumer products company that continues to innovate with new products, the Board believes this is important experience to have on the Board.

Bryan H. Fairbanks has served as President and Chief Executive Officer of the Company since April 2020. He previously served as Executive Vice President and Chief Financial Officer of the Company between July 2018 and April 2020, and as Vice President and Chief Financial Officer of the Company between August 2015 and July 2018. Between March 2006 and August 2015, he served as Senior Director, Supply Chain, and between September 2012 and August 2015, he concurrently served as Executive Director, International Business Development, with the Company. He served as Director, Financial Planning and Analysis of the Company between May 2004 and March 2006. He served in numerous senior finance roles with the Ford Motor Company, a manufacturer of cars and trucks, between August 1994 and May 2004. He received a B.S. degree in accounting from the University of Dayton and a M.B.A. degree from the University of Pittsburgh.

Mr. Fairbanks was appointed to the Board in April 2020 upon his promotion to President and Chief Executive Officer, renominated in 2021, and 2022, because the Board believes it is in the best interest of the Company that the Chief Executive Officer be a member of the Board, he has significant experience in finance, and because the Board determined it was important to have another member of the Board with expertise in this industry.

Kristine L. Juster is Chief Executive Officer of Conair LLC, a manufacturer of internationally recognized world-class products in personal care, health and beauty, grooming tools, cookware and kitchen electronics sold through a family of brands including Cuisinart, Conair, Babyliss, Snunci and Waring, since January 2024. Prior to joining Conair LLC, Ms. Juster was Chief Executive Officer, from November 2018 until June 2023, and a director, from April 2016 until 2023, of Kimball International, a leading manufacturer of furnishings sold through a family of brands including Kimball, National, Kimball Hospitality, David Edward and D’style by Kimball Hospitality. Prior to joining Kimball International, Ms. Juster was employed by Newell Brands, Inc., in various positions of increasing responsibility, since 1995. She received a Bachelor of Applied Science degree, Hotel and Restaurant Management from Cornell University.

Ms. Juster was initially appointed to the Board in October 2019, and renominated in 2020, and 2022 because of her professional experience as an executive of consumer products companies with strong brands. As a company with a strong consumer brand, the Board believes this is important experience to have on the Board.

Jay M. Gratz is retired. Mr. Gratz served as a consultant and director of 10X Technologies, a high technology startup, between April 2017 and December 2018. He served as the Chief Financial Officer of VisTracks, Inc., an application enabling platform service provider, between March 2010 and January 2018, and a director of such company between April 2010 and January 2018. He was a partner in Tatum LLC, a national executive services and consulting firm that focuses on the needs of the Office of the CFO between February 2010 and March 2010. He was an independent consultant between October 2007 and February 2010. He served as Executive Vice President and Chief Financial Officer of Ryerson Inc., a metals processor and distributor, between 1999 and October 2007, and as President of Ryerson Coil Processing Division between November 2001 and October 2007. He served as Vice President and Chief Financial Officer of Inland Steel Industries, a steel company, between 1994 and 1998, and served in various other positions, including Vice President of Finance, within that company since 1975. Mr. Gratz is a Certified Public Accountant. He received a B.A. degree in economics from State University of New York in Buffalo and a M.B.A. degree from Northwestern University Kellogg Graduate School of Management.

Mr. Gratz was initially appointed to the Board in 2007, and renominated in 2008, 2011, 2014, 2017, 2020 and 2023, because the Board felt it was important to have a member with extensive financial experience. He is a Certified Public Accountant, served as a chief financial officer of another respected public company, and has experience dealing with a wide range of financial matters that the Board feels is beneficial to the Company.

Ronald W. Kaplan retired as President and Chief Executive Officer of the Company on August 17, 2015 and remains the Vice Chairman. He served as Chairman between August 2015 and April 2020. He served as Chairman, President and Chief Executive Officer of the Company between May 2010 and August 2015, and as President and Chief Executive Officer of the Company between January 2008 and May 2010. He served as Chief Executive Officer of Continental Global Group, Inc., a manufacturer of bulk material handling systems, between February 2006 and December 2007. For 26 years prior to this, he was employed by Harsco Corporation, an international industrial services and products company, at which he served in a number of capacities, including as Senior Vice President-Operations, and, between 1994 and 2005, as President of Harsco’s Gas Technologies Group, which manufactures containment and control equipment for the global gas industry. He also serves on the Board of Directors of Caesarstone Sdot-Yam, Ltd., a company engaged in the manufacture and sale of engineered stone surfaces used for kitchen countertops, vanity tops and tiles. He received a B.A. degree in economics from Alfred University and a M.B.A. degree from the Wharton School of Business, University of Pennsylvania.

Mr. Kaplan was hired by the Company in January 2008 as its President and Chief Executive Officer. The Board believed that the Company at that time would greatly benefit from someone with prior professional experience as a chief executive officer of manufacturing companies, including experience leading companies through financial and operational “turnarounds”, which the Board felt was important experience for the Company at that time. He was initially appointed to the Board in 2008 because the Board believed that the Chief Executive Officer of the Company should serve on the Board, and renominated in 2011, 2014, 2017, 2020, and 2023, because of his experience as Chief Executive Officer of the Company and prior experience as a chief executive officer of manufacturing companies. He has retired as the Company’s Chief Executive Officer but remains as Vice Chairman of the Board because the Board believes they can benefit from his experience with both the Company and in the industry in which the Company competes, and his experience in the Company’s finances, sales and marketing, and operations, including manufacturing and logistics.

Gerald Volas is retired. He served as Chief Executive Officer and a director of TopBuild Corp., a leading installer and distributor of insulation products, between June 2015 and December 2020. He was employed by Masco Corporation, one of the world’s leading manufacturers of brand-name products for the home improvement and

new home construction industries, in various positions of increasing responsibility, between 1982 and June 2015. He served as a Group Executive responsible for almost all of Masco’s operating companies between February 2005 and June 2015. He served as President of Liberty Hardware, a Masco operating company, between April 2001 and February 2005, as a Group Controller supporting a variety of Masco operating companies between January 1996 and April 2001, and in progressive financial roles including Vice President/Controller at BrassCraft Manufacturing Company, a Masco operating company, between May 1982 to January 1996. He is a Certified Public Accountant. He received a Bachelor of Business Administration degree from the University of Michigan.

Mr. Volas was initially appointed to the Board in March 2014, and renominated in 2017, 2020, and 2023, because of his professional experience as an executive of a consumer products company, with additional specific experience in the home improvement and new home construction industry. In addition, the Board felt it was important to find a member with extensive financial experience. He is a Certified Public Accountant and has experience dealing with a wide range of financial matters that the Board feels is beneficial to the Company.

Corporate Governance

The Board currently consists of nine directors. Michael F. Golden, who served as a Board member since February 2013, passed away on June 4, 2023, and there is currently a vacancy on the Board.

The Board has three standing committees: the Audit Committee, the Compensation Committee and the Nominating/Corporate Governance Committee. During the Company’s 2023 fiscal year, the Board held five meetings, the Audit Committee held four meetings, the Compensation Committee held five meetings, and the Nominating/Corporate Governance Committee held five meetings. During 2023, each director attended at least 75% of the aggregate of the total number of meetings of the Board and of each committee of the Board on which such director served.

It is the Company’s policy that all directors should attend annual meetings of the Company’s stockholders. All of the directors attended the annual meeting in May 2023.

The Board does not have a strict retirement age for directors. However, the Board does believe that once a director attains a certain age, the Board should carefully consider whether such director’s continued service on the Board is in the best interests of the Company. The Company’s Corporate Governance Principles provide that at the adjournment of each annual meeting of stockholders, any director who is then age 75 or older shall tender his or her resignation to the Board, at which time the Board may elect to either accept such resignation or request that such director continue to serve on the Board.

Board Leadership Structure. Our Board is currently led by a non-executive Chairman, Mr. Cline, who retired as the Company’s President and Chief Executive Officer on April 28, 2020, and a non-executive Vice Chairman, Mr. Kaplan, who retired as the Company’s President and Chief Executive Officer on August 17, 2015. Our Board determined that retaining Mr. Cline as Chairman and Mr. Kaplan as Vice Chairman was in the best interests of the Company because it allows the Company to benefit from Mr. Cline’s and Mr. Kaplan’s significant experience and accumulated expertise in the Company’s industry and the Company’s internal policies, practices and procedures to effectively and expertly guide the Board. Mr. Cline’s and Mr. Kaplan’s familiarity with the Company’s executives reinforces that the Board and executives will operate with continuity and common purpose. The Board determined that having Mr. Cline as Chairman and Mr. Kaplan as Vice Chairman will allow Mr. Fairbanks, the Company’s President and Chief Executive Officer, to focus on executing the Company’s strategy and manage operations and performance. The Board is further comprised of a Lead Independent Director, an independent Audit Committee Chairman, an independent Compensation Committee Chairman, and an independent Nominating/Corporate Governance Committee Chairman. These independent positions align with the Company’s corporate governance policies and practices and assure adequate independence of the Board.

Ms. Robinson currently serves as Lead Independent Director since July 25, 2023. Mr. Golden was Lead Independent Director from May 6, 2021 until his passing on June 4, 2023. Ms. Robinson is an experienced former chief executive officer. (For additional information regarding Ms. Robinson’s professional experience, please see “Election of Directors (Proposal 1”).” Pursuant to the Company’s Corporate Governance Principles, the responsibilities of the Lead Independent Director include: presiding at executive sessions of the independent directors; presiding at Board meetings in the absence of the Chairman and Vice Chairman; making recommendations and consulting with management with regard to Board meeting agendas, materials and schedules; and serving as a liaison between the independent directors and members of senior management.

Director Independence. The Board has affirmatively determined that all of the current directors, other than Mr. Fairbanks, who is the Company’s current President and Chief Executive Officer, are “independent” of the Company within the independence guidelines governing companies listed on the New York Stock Exchange (“NYSE”). For a director to be “independent” under the NYSE guidelines, the Board must affirmatively determine that the director has no material relationship with the Company, either directly or as a partner, stockholder or officer of an organization that has a relationship with the Company.

The Board has adopted the following categorical standards of independence to assist it in determining whether a director has a material relationship with the Company. The following relationships between a director and the Company will not be considered material relationships that would preclude a finding by the Board that the director is independent under the NYSE guidelines:

∎ employment of the director or the director’s immediate family member by another company that makes payments to, or receives payments from, the Company or any of its subsidiaries for property or services in an amount which, in any single fiscal year, does not exceed the greater of $1,000,000 or 2% of such other company’s consolidated gross revenues; and

∎ a relationship of the director or the director’s immediate family member with a charitable organization, as an executive officer, board member, trustee or otherwise, to which the Company or any of its subsidiaries has made charitable contributions of not more than $50,000 annually in any of the last three years.

Furthermore, the Board has also determined, consistent with NYSE guidelines, a director is not independent if:

∎ The director is, or has been within the last three years, an employee of the Company, or an immediate family member is, or has been within the last three years, an executive officer of the Company.

∎ The director has received, or has an immediate family member who has received, during any twelve-month period within the last three years, more than $120,000 in direct compensation from the Company, other than director and committee fees and pension or other forms of deferred compensation for prior service (provided such compensation is not contingent in any way on continued service).

∎ The director is a current partner or employee of a firm that is the Company’s internal audit firm or independent registered public accounting firm; the director has an immediate family member who is a current partner of such a firm; the director has an immediate family member who is a current employee of such a firm and personally works on the Company’s internal or external audit; or the director or an immediate family member was within the last three years a partner or employee of such a firm and personally worked on the Company’s internal or external audit within that time.

∎ The director or an immediate family member is, or has been within the last three years, employed as an executive officer of another company where any of the Company’s present executive officers at the same time serves or served on that company’s compensation committee.

∎ The director is a current employee, or an immediate family member is a current executive officer, of a company that has made payments to, or received payments from, the Company for property or services in an amount which, in any of the last three fiscal years, exceeds the greater of $1,000,000, or 2% of such other company’s consolidated gross revenues.

Consistent with the NYSE guidelines, the Company’s corporate governance principles require the Company’s non-management directors to meet at least once each quarter without management present and, if the group of non-management directors includes any director who is not independent under NYSE guidelines, to meet at least once each year with only the independent directors present. The Company’s non-management directors, all of whom are independent under NYSE guidelines, held five executive sessions in 2023.

Our Board has three standing committees:

∎ Audit Committee, chaired by Mr. Volas;

∎ Compensation Committee, chaired by Mr. Gratz; and

∎ Nominating/Corporate Governance Committee, chaired by Ms. Robinson.

Each of these committees plays an important role in the governance and leadership of our Board and each is chaired by an independent director with significant business experience.

Audit Committee. During 2023, the Audit Committee of the Board was composed of four non-employee directors, from January 1, 2023 through April 23, 2023, five non-employee directors from April 24, 2023 through July 24, 2023, and four non-employee directors since July 25, 2023, all of whom meet the independence and expertise requirements of the NYSE listing standards: Mr. Volas who is currently Chairman, Mr. Gratz, Ms. Lovett, Ms. McDuffie since April 23, 2023 and Ms. Robinson from January 1, 2023 until July 24, 2023. Pursuant to SEC rules, the Board has determined that Mr. Volas and Mr. Gratz are “audit committee financial experts,” as such term is defined for purposes of Item 407 of Regulation S-K promulgated by the SEC, and are independent of management. The Audit Committee held four meetings during 2023.

The Audit Committee operates under a written charter that is reviewed annually. The Audit Committee is responsible, among its other duties, for engaging, overseeing, evaluating and replacing the Company’s independent registered public accounting firm, pre-approving all audit and non-audit services by the independent registered public accounting firm, reviewing the scope of the audit plan and the results of each audit with management and the independent registered public accounting firm, reviewing the internal audit function, reviewing the adequacy of the Company’s system of internal controls over financial reporting and disclosure controls and procedures, reviewing the financial statements and other financial information included in the Company’s annual and quarterly reports filed with the SEC, reviewing the efficacy of the Company’s information security and technology risks (including cybersecurity) and related policies and procedures, which include receiving quarterly reports from the Company’s Executive Information Security Oversight Committee by our Chief Information Officer, a direct report of our Senior Vice President and Chief Financial Officer (“CFO”), who is tasked with monitoring cybersecurity risks, and exercising oversight with respect to the Company’s Code of Conduct and Ethics and other policies and procedures regarding adherence with legal requirements. The Audit Committee has the authority to retain and terminate any third-party consultants and to obtain advice and assistance from internal and external legal, accounting and other advisers. The Audit Committee is authorized to delegate its authority to subcommittees as determined to be necessary or advisable. A current version of the Audit Committee charter is available on the Company’s website at www.trex.com/our-company/corporate-governance/committees-charters/.

Compensation Committee. During 2023, the Compensation Committee of the Board was composed of four non-employee directors from January 1, 2023 through April 23, 2023, five non-employee directors from April 24, 2023 through June 4, 2023, and four non-employee directors since June 5, 2023, who meet the independence requirements of the NYSE listing standards: Mr. Gratz, who is Chairman, Mr. Golden from January 1, 2023 through June 4, 2023, Ms. Juster, Mr. Volas from January 1, 2023 until July 25, 2023, Ms. McDuffie since April 25, 2023 and Ms. Robinson since July 25, 2023. The Compensation Committee held five meetings during 2023.

The Compensation Committee operates under a written charter that is reviewed annually. Pursuant to its charter, the principal functions of the Compensation Committee are to review, determine and approve the compensation and benefits of the Company’s President and Chief Executive Officer (“CEO”) and the other executive officers named in the Summary Compensation Table following the Compensation Discussion and Analysis section of this Proxy Statement, or “named executive officers,” as well as other officers, and to administer the Company’s employee benefit programs, including its Amended and Restated 2023 Stock Incentive Plan (the “2023 Stock Incentive Plan”), which amended and restated the 2014 Stock Incentive Plan (the “2014 Stock Incentive Plan”), Amended and Restated 1999 Employee Stock Purchase Plan (“1999 Employee Stock Purchase Plan”), annual cash incentive plan, and other incentive compensation plans, benefit plans and equity-based plans.

The Compensation Committee has the authority to retain and terminate any third-party compensation consultant and to obtain advice and assistance from internal and external legal, accounting and other advisers. (See the Compensation Discussion and Analysis section of this Proxy Statement for information regarding the practices of the Compensation Committee, including the role of the officers and the Compensation Committee’s compensation consultant in determining or recommending the amount and form of compensation paid to the named executive officers.) The Compensation Committee is authorized to delegate its authority to subcommittees as determined to be necessary or advisable. A current version of the Compensation Committee charter is available on the Company’s website at www.trex.com/our-company/corporate-governance/committees-charters/.

Nominating/Corporate Governance Committee. During 2023, the Nominating/Corporate Governance Committee was composed of four non-employee directors, from January 1, 2023 through June 4, 2023, three non-employee

directors from June 5, 2023 through July 24, 2023 and four non-employee directors since July 25, 2023, all of whom meet the independence and expertise requirements of the NYSE listing standards: Ms. Robinson who is currently Chairwoman, Ms. Juster, Ms. Lovett, Mr. Golden from January 1, 2023 through June 4, 2023 and Mr. Volas since July 25, 2023. The Nominating/Corporate Governance Committee held five meetings during 2023.

The Nominating/Corporate Governance Committee operates under a written charter that is reviewed annually. The Nominating/Corporate Governance Committee is responsible for recommending candidates for election to the Board and for making recommendations to the Board regarding corporate governance matters, including Board size and membership qualifications, Board committees, corporate organization, and non-employee director compensation, and for succession planning for officers and key executives, performance evaluations of the CEO and other officers, programs for training and development of executive-level employees, and stockholder proposals regarding these matters. Also, the Nominating/Corporate Governance Committee oversees the Company’s environmental, social and governance (ESG) matters that are significant to the Company and periodically reviews the Company’s ESG strategy, initiatives and policies and receives quarterly updates from management on ESG activities.

The Nominating/Corporate Governance Committee has the authority to retain and terminate any search firm engaged to identify director candidates, and to obtain advice and assistance from outside counsel and any other advisors, as it deems appropriate in its sole discretion. The Nominating/Corporate Governance Committee is authorized to delegate its authority to subcommittees as determined to be necessary or advisable. A current version of the Nominating/Corporate Governance Committee charter is available on the Company’s website at www.trex.com/our-company/corporate-governance/committees-charters/.

Our Board recognizes the importance of effective risk oversight in running a successful business and in fulfilling its fiduciary responsibilities to the Company and its stockholders. While the CEO and other members of our senior leadership team are responsible for the day-to-day management of risk, our Board is responsible for ensuring that an appropriate culture of risk management exists within the Company and for setting the right “tone at the top,” overseeing our aggregate risk profile, and assisting management in addressing specific risks, such as strategic and competitive risks, financial risks, brand and reputation risks, legal risks, regulatory risks, and operational risks.

The Board believes that its current leadership structure best facilitates its oversight of risk by combining independent leadership, through an independent Lead Independent Director, independent board committees, and majority independent board composition, with an experienced Chairman and Vice Chairman and an experienced CEO who each have extensive knowledge of our business, history, and the complex challenges we face. The CEO’s in-depth understanding of these matters and involvement in the day-to-day management of the Company uniquely positions him to promptly identify and raise key business risks to the Board, call special meetings of the Board (in his capacity as President) when necessary to address critical issues, and focus the Board’s attention on areas of concern. The Chairman, Vice Chairman, Lead Independent Director, independent committee chairs and other directors also are experienced executives who can and do raise issues for Board consideration and review, and are not hesitant to challenge management. The Board believes there is a well-functioning and effective balance between the Chairman, Vice Chairman, Lead Independent Director, independent board committees, independent board members, and the CEO, which enhances risk oversight.

The Board exercises its oversight responsibility for risk both directly and through its three standing committees. Throughout the year, the Board and each committee spend a portion of their time reviewing and discussing specific risk topics. The full Board is kept informed of each committee’s risk oversight and related activities through regular attendance at all committee meetings by all directors. Strategic, operational and competitive risks also are presented and discussed at the Board’s quarterly meetings, and more often as needed. On at least an annual basis, the Board conducts a review of our long-term strategic plans and members of senior management report on our top risks and the steps management has taken or will take to mitigate these risks. At each quarterly meeting, or more often as necessary, our CEO provides written and/or oral reports to the Board on the critical

issues we face, and each officer reports on recent developments in their respective operating area. These reports include a discussion of business risks as well as a discussion regarding enterprise risk. In addition, at each quarterly meeting, or more often as necessary, the Senior Vice President, Chief Legal Officer and Secretary (“CLO”) updates the Board on material legal and regulatory matters.

The Audit Committee is responsible for reviewing the framework by which management discusses our risk profile and risk exposures with the full Board and its committees. The Audit Committee meets regularly with our CFO, independent registered public accounting firm, internal auditor, CLO, and other members of senior management to discuss our major financial risk exposures, financial reporting, internal controls, credit and liquidity risk, compliance risk, and key operational risks. The Audit Committee meets regularly in separate executive sessions with the independent registered public accounting firm and internal auditor, as well as with committee members only, to facilitate a full and candid discussion of risk and other matters.

The Compensation Committee is responsible for overseeing human capital and compensation risks, including evaluating and assessing risks arising from our compensation policies and practices and ensuring executive compensation is aligned with performance. The Compensation Committee is also charged with monitoring our incentive and equity-based compensation plans, including employee benefit plans, reviewing and retaining compensation advisers, and considering the results of the non-binding advisory say-on-pay vote and determine what adjustments, if any, are necessary or appropriate for the Company to make to its compensation policies and practices in light of the results of such vote. The Compensation Committee meets regularly with the CLO and other executive officers as well as in separate sessions with the Company’s external compensation consultant to facilitate a full and candid discussion of executive performance and compensation.

The Nominating/ Corporate Governance Committee oversees risks related to our overall corporate governance, including Board and committee composition, Board size and structure, Board compensation, director independence, our corporate governance profile and ratings and ESG-related strategies, initiatives and policies. The Committee also is actively engaged in overseeing risks associated with succession planning for the Board and management.

The Board of Directors, its committees and the Company’s management recognize the importance of ESG matters and how they impact our stakeholders. During 2023, the Company continued its focus on several ESG initiatives that matter to our customers, employees, communities, stockholders and the environment. We believe appropriately responding to ESG issues is an important component of corporate social responsibility and comprehensive fiscal management. Considering the continued importance surrounding ESG matters, the Company is active in establishing and improving programs, practices and policies to maximize the benefit to the Company, our stockholders, employees, customers and the communities we impact. We believe that strong ESG programs and practices are critical to attracting the best talent, executing on our strategies, maintaining a robust supplier and channel partner base, and innovating to meet our consumers’ evolving expectations.

The Company’s policies, practices and programs include engagement with external stakeholders to learn about their priorities and get their feedback; coordination of relevant company projects and initiatives; and alignment with the Company’s strategies and implementation.

Further, the Board and its committees review and discuss with management matters related to human capital management, including the Company’s commitments and progress on diversity, equity and inclusion, employee engagement, compensation and benefits, business conduct and compliance, and executive succession planning.

We are committed to conducting operations and activities in a manner that provides and maintains safe and healthy working conditions, protects the environment, and conserves natural resources. It is our policy that no employee shall engage in any conduct that violates any environmental, health or safety law or is otherwise inconsistent with the health and safety needs of our employees and the environmental needs of our communities. We are also committed to the continual improvement of our environmental management systems, our environmental, health and safety programs, and to the prevention of pollution.

On June 28, 2023, the Company published its fourth annual ESG Report that highlighted several achievements including:

The Company is committed to continuing its ESG commitment and will continue its communications with customers, employees, communities, and stockholders regarding its ESG initiatives in the upcoming 2023 ESG Report. A copy of the Company’s current ESG report is available on the Company’s website at www.trex.com/why-trex/esg.

In connection with the Company’s ESG efforts, in addition to our Code of Conduct and Ethics, the Company has adopted a Human Rights Policy, a Vendor and Customer Code of Conduct and Ethics, an Environmental Policy and an Occupational Health and Safety Policy. A current version of each of these policies is available on the Company’s website at www.trex.com/our-company/.

No member of the Compensation Committee was an officer or employee of the Company or any subsidiary of the Company during 2023. There are no interlock relationships as defined in the applicable SEC rules.

The Board has adopted a director nominations policy (the “nominations policy”). The purpose of the nominations policy is to set forth the process by which candidates for directors are selected. The nominations policy is administered by the Nominating/Corporate Governance Committee of the Board.

The Board does not currently prescribe any minimum qualifications for director candidates. Consistent with the criteria for the selection of directors approved by the Board, the Nominating/Corporate Governance Committee will take into account the Company’s current needs and the qualities needed for Board service, including experience and achievement in business, finance, technology or other areas relevant to the Company’s activities; reputation, ethical character and maturity of judgment; diversity of viewpoints, backgrounds and experiences; absence of conflicts of interest that might impede the proper performance of the responsibilities of a director; independence under SEC and NYSE rules; service on other boards of directors; sufficient time to devote to Board matters; ability to work effectively and collegially with other Board members; and diversity. In considering the diversity of candidates, the Committee considers an individual’s background, viewpoints, professional experience, education and skill, race, ethnicity, gender, age and/or national origin. In the case of incumbent directors whose terms of office are set to expire, the Nominating/Corporate Governance Committee will review such directors’ overall service to the Company during their term, including the number of meetings attended, level of participation, quality of performance and any transactions of such directors with the Company during their term. For those potential new director candidates who appear upon first consideration to meet the Board’s selection criteria, the Nominating/Corporate Governance Committee will conduct appropriate inquiries into their background and qualifications and, depending on the result of such inquiries, arrange for in-person meetings with the potential candidates.

The Nominating/Corporate Governance Committee may use multiple sources for identifying director candidates, including its own contacts and referrals from other directors, members of management, and the Company’s advisers. The Nominating/Corporate Governance Committee has used in the past, and may use in the future, the services of an executive search firm to help identify candidates for directors who meet the qualifications outlined

above. The search firm screens the candidates, conducts reference checks, prepares a biography of each candidate for committee review and assists in arranging interviews.

The Committee will also consider director candidates recommended by stockholders and will evaluate such director candidates in the same manner in which it evaluates candidates recommended by other sources. In making recommendations for director nominees for the annual meeting of stockholders, the Nominating/Corporate Governance Committee will consider any written recommendations of director candidates by stockholders received by the Secretary of the Company in accordance with the provisions of the Company’s bylaws and applicable law.

The nominations policy is intended to provide a flexible set of guidelines for the effective functioning of the Company’s director nominations process. The Nominating/Corporate Governance Committee intends to review the nominations policy as it considers advisable and anticipates that modifications may be necessary from time to time as the Company’s needs and circumstances evolve, and as applicable legal or listing standards change. The Nominating/Corporate Governance Committee may amend the nominations policy at any time.

The Company’s bylaws provide that any stockholder wishing to nominate persons for election as directors at an annual meeting must deliver to the Secretary of the Company at the Company’s principal office in Winchester, Virginia a written notice of the stockholder’s intention to make such a nomination. The stockholder generally is required to furnish the notice no earlier than 120 days and no later than 90 days before the first anniversary of the preceding year’s annual meeting. The notice must contain the information required by the bylaws.

The Board welcomes communications from its stockholders and other interested parties and has adopted a procedure for receiving and addressing those communications. Security holders and other interested parties may communicate any concerns they may have about the Company directly and confidentially to either the full Board or the non-management directors as a group, or an individual director, by writing to: “Board of Directors” or “Non-Management Directors” or Name of Individual Director, Trex Company, Inc., 2500 Trex Way, Winchester, VA 22601, Attention: Secretary, or by calling the Company’s Governance Hotline (800-719-4916). An independent third-party vendor maintains the Governance Hotline, which is available 24 hours a day, 365 days a year. A caller wishing to be identified may indicate his or her name in the message. All calls are forwarded to the CLO and CFO. The Secretary then reviews and forwards all communications to the Board member or members that the caller designates, except for those communications that are outside the scope of Board matters or duplicative of other communications previously forwarded to the intended recipients. The Secretary will retain copies of all communications and maintain a record of whether the communications were forwarded and, if not, the reason why not.

Any individual, whether an employee or third party, may report to the Audit Committee any information relating to questionable accounting, internal accounting controls and auditing matters by writing to Trex Company, Inc., Audit Committee Chairman, c/o Woods Rogers PLC, 901 East Byrd Street, Suite 1550, Richmond, VA 23219, or by calling the Company’s Governance Hotline. As stated above, an independent third-party vendor maintains the Governance Hotline. A caller wishing to be identified may indicate his or her name in the message. All calls are forwarded to the Chairman of the Audit Committee. If anyone wants to submit relevant records, they should be mailed to the above address.

We proactively engage with shareholders and other stakeholders throughout the year to learn their perspectives on significant issues, including company performance and strategy, corporate governance, executive compensation, and environmental, social, and governance topics. This engagement helps us better understand shareholder priorities and perspectives, gives us an opportunity to elaborate upon our initiatives and practices, and fosters constructive dialogue. We take feedback and insights from our engagement with shareholders and other stakeholders into consideration as we review and evolve our practices and disclosures, and further share them with our Board as appropriate.

Section 16(a) of the Securities Exchange Act of 1934 requires the Company’s directors and executive officers and persons who own more than 10% of the Company’s common stock to file with the SEC and the NYSE initial reports of ownership and reports of changes in ownership of common stock and other equity securities of the Company. The reporting persons are required by rules of the SEC to furnish the Company with copies of all Section 16(a) reports they file. Based solely upon a review of Section 16(a) reports furnished to the Company for fiscal 2023 or written representations that no other reports were required, the Company believes that the foregoing reporting persons complied with all filing requirements for fiscal 2023.

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

Non-Employee Director Compensation

Non-employee directors of the Company receive cash and stock-based compensation under the Trex Company, Inc. Amended and Restated 1999 Incentive Plan for Outside Directors (“Outside Director Plan”). The Outside Director Plan is administered by the Nominating/Corporate Governance Committee of the Board. The Outside Director Plan provides that all equity grants issued under such Plan are issued pursuant to the 2023 Stock Incentive Plan, which was approved by stockholders at the Company’s 2023 annual meeting.

The Nominating/Corporate Governance Committee is responsible for making recommendations to the Board regarding non-employee director compensation. In accordance with this authority, the Nominating/Corporate Governance Committee utilizes the Compensation Committee’s independent compensation consultant, Korn/Ferry International (“KF”), to advise the Nominating/Corporate Governance Committee on matters related to director compensation.

The Company’s director compensation program was reviewed by KF in February 2021 and February 2022, and by the Nominating/Corporate Governance Committee in July 2022 relative to the Company’s peer group. The Company’s peer group is reviewed by KF prior to each compensation review, and in July 2022, KF provided the Nominating/Corporate Governance Committee (with respect to director compensation) and the Compensation Committee (with respect to officer compensation) a set of considerations for change, including proposed additions and deletions to the peer group. (See discussion in Compensation Discussion and Analysis under the “How Do We Determine Executive Pay?” for further discussion on the changes to the Company’s peer group.)

The peer group approved by the Nominating/Corporate Governance Committee, and utilized for the director compensation review, was as follows:

The review conducted by the Nominating/Corporate Governance Committee in July 2022 indicated that the non-employee directors’ total annual compensation (consisting of cash and equity-based compensation) was approximately 97% of the median of the peer group (assuming a hypothetical director serves as a member of the Audit Committee and the Compensation Committee). The Nominating/Corporate Governance Committee, desiring that non-employee directors’ total annual compensation be aligned with the peer group, recommended no changes in compensation to the Board. For the hypothetical director referred to above, the total annual compensation was maintained at $222,500, which equated to approximately 97% of the median of the peer group.

The elements of the non-employee director compensation package under the Outside Director Plan are as follows:

∎ Upon initial appointment to the Board, non-employee directors receive awards of options, stock appreciation rights (“SARs”), restricted shares, restricted stock units or any combination thereof (as determined by the Nominating/Corporate Governance Committee) valued at $55,000.

∎ For service on the Board, each non-employee director receives an annual fee of $82,500, and an annual award of options, SARs, restricted shares, restricted stock units or any combination thereof (as determined by the Nominating/Corporate Governance Committee) valued at $120,000.

∎ Any non-employee director who serves as Chairman of the Board will receive an additional $85,000 annually, as Vice Chairman of the Board will receive an additional $55,000 annually, and as Lead Independent Director will receive an additional $25,000 annually.

∎ The chairman of each committee receives an annual committee fee of $20,000, unless such committee chairman also serves as Lead Independent Director, in which case such committee chairman shall receive only the Lead Independent Director fee.

∎ Each member of a committee other than the chairman receives an annual committee fee of $10,000.

∎ The annual director fee and the annual committee fees are paid in four equal quarterly installments in arrears on the first business day following each quarter of the fiscal year in which the eligible director completes board or committee service. Such fees are paid in the form of cash, provided that a director may elect to receive all or any portion of such fees in the form of a grant of options, SARs, restricted shares, restricted stock units or any combination thereof (as determined by the Nominating/Corporate Governance Committee). The fiscal year of the Outside Director Plan is July 1 through June 30.

∎ The annual grants of equity are made in arrears on the date of the first regularly scheduled Board meeting after June 30 of each year.

∎ All grants of restricted shares or restricted stock units vest one year after grant provided that the grants will immediately vest in the event of death, disability, retirement, or termination in connection with a change in control. All grants of SARs or stock options vest immediately upon grant and have a term of ten years (provided that the term is extended for one year if the director dies during the tenth year of the SAR or stock option term). Upon the termination of a non-employee director’s service for any reason (other than for cause), the director will have the right, at any time within five years after the date of termination of service and before the termination of the SAR or stock option, to exercise any SAR or stock option held by the director on the service termination date.

∎ All fees described above paid in arrears are pro-rated for any partial periods served.

The Nominating/Corporate Governance Committee has elected to use restricted stock units as the form of equity described above.

The Outside Director Plan is designed to deliver compensation approximately 46% in cash and 54% in equity (assuming a director does not elect to receive additional equity in lieu of cash, as described above), with the objective of appropriately balancing the pay of non-employee directors for their service while linking their compensation closely to returns to stockholders through the potential for enhanced value from future stock price appreciation. Directors are also reimbursed for actual travel expenses.

The Company does not provide pensions, medical benefits or other benefit programs to non-employee directors.

In 2013, the Board adopted Stock Ownership Guidelines applicable to non-employee directors, pursuant to which each non-employee director is required to own and hold, as a minimum, that number of shares of the Company’s common stock having a market value of at least 3 times the director’s annual cash retainer. For purposes of the guidelines, common stock includes shares of common stock no matter how acquired (i.e., vesting of restricted shares or restricted stock units, or purchased on the open market), and unvested restricted shares and restricted stock units. Directors have 5 years from becoming a director, whichever occurs later, to comply with the ownership requirements. Other than Ms. McDuffie who joined the Board on in April, 2023 each director meets the current minimum requirements.

In 2013, the Board also adopted, on a voluntary basis and in advance of final Dodd-Frank Act hedging rules, an Anti-Hedging and Anti-Pledging Policy that applies to non-employee directors. This policy prohibits our directors from purchasing any financial instrument or entering into any transaction that is designed to hedge or offset any decrease in the market value of Company equity (including, but not limited to, prepaid variable forward contracts, equity swaps, collars, or exchange funds), or pledging, hypothecating, or otherwise encumbering Company equity as collateral for indebtedness.

(See discussion in Compensation Discussion and Analysis under the “Stock Ownership Guidelines” and “Anti-Hedging and Anti-Pledging Policy” sections under “Additional Information on Our Program” for discussion of the Stock Ownership Guidelines and Anti-Hedging and Anti-Pledging Policy as applicable to our named executive officers.)

2023 Non-Employee Director Compensation

The table below shows compensation paid to the non-employee directors for their service in 2023.

2023 Non-Employee Director Equity Awards

Named Executive Officers

The table below sets forth information concerning our executive officers covered in the “Compensation Discussion and Analysis” section of this Proxy Statement. We refer to them as the “named executive officers.”

Bryan H. Fairbanks has served as President and Chief Executive Officer since April 2020. He previously served as Executive Vice President and Chief Financial Officer of the Company between July 2018 and April 2020, and as Vice President and Chief Financial Officer of the Company between August 2015 and July 2018. Between March 2006 and August 2015, he served as Senior Director, Supply Chain, and between September 2012 and August 2015, he concurrently served as Executive Director, International Business Development, with the Company. He served as Director, Financial Planning and Analysis of the Company between May 2004 and March 2006. He served in numerous senior finance roles with the Ford Motor Company between August 1994 and May 2004. He received a B.S. degree in accounting from the University of Dayton and a M.B.A. degree from the University of Pittsburgh.

Adam D. Zambanini has served as Executive Vice President and Chief Operating Officer since October 25, 2023. He previously served as President of Trex Residential Products between July 2018 and October 2023. He served as Vice President, Marketing between January 2011 and July 2018, and served in a number of capacities at the Company, most recently as Director, Marketing between September 2005 and December 2010. He was employed by Rubbermaid Commercial Products between January 2000 and September 2005, with his last position being Product Manager. He received a B.S. degree in mechanical engineering from Penn State University, and a M.B.A. degree from Averett University.

Brenda Lovcik has served as Senior Vice President and Chief Financial officer since October 23, 2023. She served as Chief Financial Officer, Global Products, Global Supply Chain and Global FP&A at Johnson Controls, Inc. from August 2022 until October 2023. Prior to that she held multiple senior financial roles at Medtronic, Inc. between 2002 and 2022, with her last position there as Senior Vice President, Finance and Global FP&A. She received a B.S. degree in accounting from St. Cloud State University.

Amy M. Fernandez has served as Senior Vice President, Chief Legal Officer and Secretary since October 25, 2023. She previously served as Vice President, General Counsel and Secretary from May 4, 2023 until October 25, 2023, as Vice President, General Counsel and Assistant Secretary from May 5, 2022 until May 4, 2023 and as Vice President, General Counsel from December 7, 2021 until May 5, 2022. She was employed by Luigi Lavazza S.p.A as General Counsel, Lavazza Professional and Lavazza Americas from December 2018 through December 2021 and in various legal leadership roles within Mars Inc. between October 2015 and December 2018, with her last position being Associate General Counsel, Mars Wrigley Confectionery, Global Drinks and Food Americas. She was Vice President, Chief Intellectual Property Counsel at Armstrong World Industries between 2012 and 2015 and served as Chief Patent Counsel, Toothbrushes and Packaging, at Colgate-Palmolive between 2008 and 2012. She received a BS degree in Mechanical Engineering from the University of Pennsylvania and a J.D. degree from Dickinson School of Law.

Dennis C. Schemm served as Senior Vice President and Chief Financial Officer between February 2021 and June 9, 2023, and as Vice President and Chief Financial Officer between April 2020 and February 2021. He served as Executive Vice President and Chief Financial Officer of Continental Building Products between

May 2015 and April 2020, and as Vice President, Global Finance for Armstrong Flooring at Armstrong World Industries between May 2013 and April 2015. He served as Global Finance Director for Gilbarco-Veeder Root, a Danaher company between May 2011 and May 2013, and in various financial leadership roles within Monsanto Company between June 1996 and April 2011. He received simultaneous BS degrees in Accounting and Computer Science from Penn State University and a M.B.A. degree from Carnegie Mellon University.

William R. Gupp served as Senior Vice President, Chief Legal Officer and Secretary of the Company between December 2021 until his retirement in May 2023. He served as Senior Vice President, General Counsel and Secretary between August 2014 and December 2021. He served as Chief Administrative Officer, General Counsel and Secretary between October 2009 and August 2014, and as Vice President and General Counsel between May 2001 and October 2009. He was employed by Harsco Corporation, an international industrial services and products company, between March 1993 and May 2001, most recently as Senior Counsel and Director-Corporate Development. He was employed by the law firm of Harter, Secrest & Emery between August 1985 and March 1993. He received a B.S. degree in accounting from Syracuse University and a J.D. degree from the University of Pennsylvania Law School.

Compensation Discussion and Analysis

This section describes the Company’s compensation program for its President and Chief Executive Officer (“CEO”), its Senior Vice President and Chief Financial Officer (“CFO”), and its three other most highly compensated executive officers for fiscal year 2023, all of whom are referred to collectively as the “named executive officers”. For fiscal 2023, the Company’s named executive officers were:

This Compensation Discussion and Analysis focuses on the material elements of our executive compensation program in effect for the 2023 fiscal year. It also provides an overview of our executive compensation philosophy and why we believe the program is appropriate for the Company and its stockholders. Finally, we discuss the Compensation Committee’s methodology for determining appropriate and competitive levels of compensation for the named executive officers. Details of compensation paid to the named executive officers can be found in the tables below.

Our executive compensation program is intended to align our named executive officers’ interests with those of our stockholders by rewarding performance that meets or exceeds the goals the Board and the Compensation Committee establish with the objective of increasing stockholder value. In line with our pay-for-performance philosophy, the total compensation received by our named executive officers will vary based on individual and corporate performance measured against annual and long-term performance goals. Our named executive officers’ total compensation is comprised of a mix of base salary, annual cash incentive compensation and long-term equity incentive compensation.

The Company provides its stockholders the opportunity to cast an annual non-binding advisory vote on executive compensation (a “say-on-pay proposal”). The Company and the Company’s Compensation Committee consider the outcome of the Company’s say-on-pay proposal when making future compensation decisions for the executive officers of the Company. In connection with the Company’s 2023 annual meeting of stockholders, the proposal to approve the executive compensation of the Company’s executive officers named in the Company’s Proxy Statement dated March 21, 2023 received 83,190,144 votes in favor, or 91% of votes cast. Although these votes are advisory (and therefore not binding on the Company), the Company, the Compensation Committee and the Board carefully review these results each year and consider them, along with other communications from stockholders relating to our compensation practices, in making future compensation decisions for executive officers of the Company.

What person or group is responsible for determining the compensation levels of named executive officers?

The Role of the Compensation Committee. The Compensation Committee, pursuant to its charter, reviews, determines and approves the compensation, including base salary, and annual and long-term incentive compensation, of the Company’s CEO, the other named executive officers, as well as the other officers appointed

by the Board. Additionally, the Compensation Committee administers the Company’s employee benefit programs, including its 2023 Stock Incentive Plan, 2014 Stock Incentive Plan, 1999 Employee Stock Purchase Plan, annual cash incentive plan, and other incentive compensation plans, benefit plans and equity-based plans.

The Role of Consultants. The Compensation Committee has the authority to retain and terminate any third-party compensation consultant and to obtain advice and assistance from internal and external legal, accounting and other advisers. The Compensation Committee has the authority to compensate its outside advisers without obtaining approval of the Board. In accordance with this authority, the Compensation Committee retained Korn/Ferry International (“KF”) in 2023 as the committee’s independent compensation consultant to advise the Compensation Committee on matters related to CEO and other officer compensation. The Compensation Committee assessed KF’s work as required under rules of the SEC and concluded that it did not raise any conflicts of interest and that KF was independent within the NYSE’s listing standards.

The consultant’s assignments are determined by the chairman of the Compensation Committee. At the request of the chairman, the current consultant assists in developing the peer group of companies and compensation surveys to be used for the competitive analyses, prepares the market analysis of named executive officer compensation, prepares a financial analysis of the Company’s performance vis-à-vis the peer group and analyzes the relationship between CEO pay and company performance, constructs market competitive ranges of pay opportunity for base salaries, annual cash incentive compensation targets, and long-term equity incentive awards for named executive officers, and reviews the annual cash incentive compensation and long-term equity incentive plans for linkage to key business objectives and company performance. The consultant advises the Compensation Committee as to the compensation of executive officers of the Company, but does not recommend any specific pay level changes for executive officers.

Total fees paid to KF for services performed during 2023 relating to executive compensation were $89,000.

The Role of Executives. The Company’s CEO, Senior Vice President, Chief Legal Officer and Secretary (“CLO”), and Senior Vice President, Chief Human Resources Officer (“CHRO”) are actively involved in the executive compensation process. Historically, the CEO reviews the performance of each of the named executive officers (other than his own performance) and, within the defined program parameters, recommends to the Compensation Committee base salary increases and annual cash incentive compensation and long-term equity incentive awards for such individuals. He provides the Compensation Committee with both annual and long-term recommended financial performance goals for the Company that are used to link pay with performance. The CEO also provides his views to the Compensation Committee with respect to the executive compensation program’s ability to attract, retain and motivate the level of executive talent necessary to achieve the Company’s business goals. The CLO and CHRO work with the CEO to develop the recommended base salary increases, annual cash incentive compensation levels and long-term equity incentive awards and provide analysis on the ability of the executive compensation program to attract, retain, and motivate the Company’s executive team and potential executive hires. The CEO, CLO, and CHRO attend the meetings of the Compensation Committee, but do not participate in the Compensation Committee’s executive sessions.

What are the Company’s executive compensation principles and objectives?

The Compensation Committee believes that the structure of the compensation program for named executive officers should be designed to attract, motivate, and retain key talent to promote the long-term success of the Company, and to balance these objectives with a strong link to stockholder return and other measures of performance that drive total stockholder return.

The Company’s overall executive compensation philosophy is that pay should be competitive with the relevant market for executive talent, be performance-based, vary with the attainment of specific objectives, and be closely aligned with the interests of the Company’s stockholders. The core principles of the Company’s executive compensation program include the following:

The CEO and the Compensation Committee regularly review the executive compensation program and philosophy to assess whether the program promotes the objectives of enabling the Company to attract and retain exceptionally talented executives and to link total compensation to the Company’s ability to meet its annual financial and non-financial goals and, in the longer term, to produce enhanced levels of total stockholder return. Based on such reviews, programmatic changes have been implemented at various times to enhance consistency of the various compensation elements with the program’s philosophy.

Benchmarking: Benchmarking in comparison to a peer group of companies (the “peer group”) is one of several factors considered in the compensation process but is not in and of itself determinative. The relative position of individual named executive officers in comparison to the peer group is based on their respective competencies, experience and performance. While the Company does not establish executive pay based solely on benchmarking data, we believe that our pay levels and practices should be within a range of competitiveness with our peer group and benchmarking provides us with an assessment of reasonableness and competitiveness. However, each individual’s actual compensation is based on numerous factors including the individual’s level of experience in the role and the annual and long-term performance of both the Company and the individual.

The Compensation Committee benchmarks target total direct compensation, which consists of base salary, target annual cash incentive compensation, and the value of long-term equity incentives, to the peer group. The Compensation Committee benchmarks its named executive officer compensation because the Compensation Committee believes this is the best way to determine whether such compensation is competitive with the Company’s labor market for executive talent.

Shareholder Engagement: As referenced above, in the Shareholder Engagement section of this Proxy, the Company proactively engages with shareholders and other stakeholders throughout the year. During 2023, no concerns were raised by shareholders regarding executive compensation.

Peer Group: The Compensation Committee (with respect to officer compensation) and Nominating/Corporate Governance Committee (with respect to director compensation) take into account a number of factors for each potential peer group company including, but not limited to, size (revenues, market capitalization and number of employees), nature of business (business comparators and similar customer base), organizational complexity and business model (span and scope of the organization), growth over the last one and three years in revenue and EBITDA, competition for executive talent (organizations from which executives may be recruited to and from) and location. While all of the aforementioned factors are taken into account, the Compensation Committee and Nominating/Corporate Governance Committee consider the most important factors to be size, nature of business and competition for executive talent as these provide the most meaningful insight into competitive practices.