10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2024

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from       to      

Commission File Number: 001-14649

Trex Company, Inc.

(Exact name of registrant as specified in its charter)

Delaware	54-1910453
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
2500 Trex Way Winchester, Virginia	22601
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code: (540) 542-6300

Not Applicable

(Former name, former address and former fiscal year, if changed since last report)

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

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common stock	TREX	New York Stock Exchange

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

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

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

Large accelerated filer	☒	Accelerated filer	☐
Non-accelerated filer	☐	Smaller reporting company	☐
		Emerging growth company	☐

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

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

The number of shares of the registrant’s common stock, par value $0.01 per share, outstanding at April 25, 2024 was 108,692,757 shares.

TREX COMPANY, INC.

INDEX

		Page
PART I FINANCIAL INFORMATION			2
Item 1.	Condensed Consolidated Financial Statements		2
	Condensed Consolidated Statements of Comprehensive Income for the Three Months Ended March 31, 2024 and March 31, 2023 (unaudited)		2
	Condensed Consolidated Balance Sheets as of March 31, 2024 and December 31, 2023 (unaudited)		3
	Condensed Consolidated Statements of Changes in Stockholders’ Equity for the Three Months Ended March 31, 2024 and March 31, 2023 (unaudited)		4
	Condensed Consolidated Statements of Cash Flows for the Three Months Ended March 31, 2024 and March 31, 2023 (unaudited)		5
	Notes to Condensed Consolidated Financial Statements (unaudited)		6
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations		15
Item 3.	Quantitative and Qualitative Disclosures About Market Risk		23
Item 4.	Controls and Procedures		24
PART II OTHER INFORMATION			25
Item 1.	Legal Proceedings		25
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds		25
Item 5.	Other Information		25
Item 6.	Exhibits		26

1

PART I

FINANCIAL INFORMATION

Item 1. Condensed Consolidated Financial Statements

TREX COMPANY, INC.

Condensed Consolidated Statements of Comprehensive Income

(Unaudited)

(In thousands, except share and per share data)

	Three Months Ended March 31,
	2024			2023
Net sales	$	373,635		$	238,718
Cost of sales		204,023			144,290
Gross profit		169,612			94,428
Selling, general and administrative expenses		50,600			37,480
Income from operations		119,012			56,948
Interest (income) expense, net		(5	)		1,985
Income before income taxes		119,017			54,963
Provision for income taxes		29,947			13,832
Net income	$	89,070		$	41,131
Basic earnings per common share	$	0.82		$	0.38
Basic weighted average common shares outstanding		108,640,168			108,771,958
Diluted earnings per common share	$	0.82		$	0.38
Diluted weighted average common shares outstanding		108,790,625			108,916,261
Comprehensive income	$	89,070		$	41,131

See Notes to Condensed Consolidated Financial Statements (Unaudited).

2

TREX COMPANY, INC.

Condensed Consolidated Balance Sheets

(In thousands, except share data)

	March 31, 2024			December 31, 2023
	(Unaudited)
ASSETS
Current assets
Cash and cash equivalents	$	3,053		$	1,959
Accounts receivable, net		373,470			41,136
Inventories		123,885			107,089
Prepaid expenses and other assets		12,958			22,070
Total current assets		513,366			172,254
Property, plant and equipment, net		729,993			709,402
Operating lease assets		25,010			26,233
Goodwill and other intangible assets, net		18,058			18,163
Other assets		6,531			6,833
Total assets	$	1,292,958		$	932,885
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities
Accounts payable	$	49,350		$	23,963
Accrued expenses and other liabilities		91,940			56,734
Accrued warranty		4,901			4,865
Line of credit		223,000			5,500
Total current liabilities		369,191			91,062
Deferred income taxes		67,226			72,439
Operating lease liabilities		17,602			18,840
Non-current accrued warranty		18,233			17,313
Other long-term liabilities		16,560			16,560
Total liabilities		488,812			216,214
Commitments and contingencies		—			—
Stockholders’ equity
Preferred stock, $0.01 par value, 3,000,000 shares authorized; none issued and outstanding		—			—
Common stock, $0.01 par value, 360,000,000 shares authorized; 141,056,063 and 140,974,843 shares issued and 108,692,757 and 108,611,537 share outstanding, at March 31, 2024 and December 31, 2023, respectively		1,411			1,410
Additional paid-in capital		138,561			140,157
Retained earnings		1,425,128			1,336,058
Treasury stock, at cost, 32,363,306 and 32,363,306 shares at March 31, 2024 and December 31, 2023		(760,954	)		(760,954	)
Total stockholders’ equity		804,146			716,671
Total liabilities and stockholders’ equity	$	1,292,958		$	932,885

See Notes to Condensed Consolidated Financial Statements (Unaudited).

3

TREX COMPANY, INC.

Condensed Consolidated Statements of Changes in Stockholders’ Equity

(Unaudited)

(In thousands, except share data)

	Common Stock					Additional Paid-In Capital			Retained Earnings		Treasury Stock					Total
	Shares			Amount							Shares		Amount
Balance, December 31, 2023		108,611,537		$	1,410	$	140,157		$	1,336,058		32,363,306	$	(760,954	)	$	716,671
Net income		—			—		—			89,070		—		—			89,070
Employee stock plans		5,640			—		397			—		—		—			397
Shares withheld for taxes on awards		(55,103	)		—		(5,146	)		—		—		—			(5,146	)
Stock-based compensation		130,683			1		3,153			—		—		—			3,154
Balance, March 31, 2024		108,692,757		$	1,411	$	138,561		$	1,425,128		32,363,306	$	(760,954	)	$	804,146

	Common Stock					Additional Paid-In Capital			Retained Earnings		Treasury Stock					Total
	Shares			Amount							Shares		Amount
Balance, December 31, 2022		108,743,423		$	1,408	$	131,539		$	1,130,674		32,098,410	$	(745,272	)	$	518,349
Net income		—			—		—			41,131		—		—			41,131
Employee stock plans		8,504			—		316			—		—		—			316
Shares withheld for taxes on awards		(28,773	)		—		(1,592	)		—		—		—			(1,592	)
Stock-based compensation		80,362			1		1,972			—		—		—			1,973
Balance, March 31, 2023		108,803,516		$	1,409	$	132,235		$	1,171,805		32,098,410	$	(745,272	)	$	560,177

See Notes to Condensed Consolidated Financial Statements (Unaudited).

4

TREX COMPANY, INC.

Condensed Consolidated Statements of Cash Flows

(Unaudited)

(In thousands)

	Three Months Ended March 31,
	2024			2023
OPERATING ACTIVITIES
Net income	$	89,070		$	41,131
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization		14,154			11,915
Deferred Income Taxes		(5,212	)		—
Stock-based compensation		3,155			1,972
Loss (gain) on disposal of property, plant and equipment		2,122			—
Other non-cash adjustments		121			121
Changes in operating assets and liabilities:
Accounts receivable		(332,333	)		(204,014	)
Inventories		(16,796	)		13,571
Prepaid expenses and other assets		(319	)		291
Accounts payable		26,238			2,975
Accrued expenses and other liabilities		12,041			3,361
Income taxes receivable/payable		33,715			13,206
Net cash used in operating activities		(174,044	)		(115,471	)
INVESTING ACTIVITIES
Expenditures for property, plant and equipment		(37,720	)		(39,192	)
Proceeds from sales of property, plant and equipment		106			—
Net cash used in investing activities		(37,614	)		(39,192	)
FINANCING ACTIVITIES
Borrowings under line of credit		258,500			200,500
Principal payments under line of credit		(41,000	)		(53,000	)
Repurchases of common stock		(5,145	)		(1,592	)
Proceeds from employee stock purchase and option plans		397			316
Financing costs		—			30
Net cash provided by financing activities		212,752			146,254
Net increase (decrease) in cash and cash equivalents		1,094			(8,409	)
Cash and cash equivalents, beginning of period		1,959			12,325
Cash and cash equivalents, end of period	$	3,053		$	3,916
Supplemental Disclosure:
Cash paid for interest, net of capitalized interest	$	—		$	1,817
Cash paid for income taxes, net	$	1,444		$	733
Supplemental non-cash investing and financing disclosure:
Capital expenditures in accounts payable	$	851		$	229

See Notes to Condensed Consolidated Financial Statements (Unaudited).

5

TREX COMPANY, INC.

Notes to Condensed Consolidated Financial Statements

For the Three Months Ended March 31, 2023 and 2024

(Unaudited)

1. BUSINESS AND ORGANIZATION

Trex Company, Inc. (Trex or 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 its products are manufactured in a proprietary process that combines reclaimed wood fibers and scrap polyethylene. The Company is incorporated in Delaware. The principal executive offices are located at 2500 Trex Way, Winchester, Virginia 22601, and the telephone number at that address is (540) 542-6300. The Company operates in a single reportable segment.

2. BASIS OF PRESENTATION

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X and, accordingly, the accompanying unaudited condensed consolidated financial statements do not include all of the information and notes required by accounting principles generally accepted in the United States for complete financial statements. In the opinion of management, all adjustments (consisting of normal and recurring adjustments, except as otherwise described herein) considered necessary for a fair presentation have been included in the accompanying unaudited condensed consolidated financial statements. Certain reclassifications have been made to prior period balances to conform to current year presentation. The unaudited condensed consolidated financial statements include the accounts of the Company for all periods presented. Intercompany accounts and transactions have been eliminated in consolidation.

The unaudited consolidated results of operations for the three months ended March 31, 2024, are not necessarily indicative of the results that may be expected for the fiscal year ending December 31, 2024. The Company’s 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, consumer spending and preferences, interest rates, the impact of any supply chain disruptions, economic conditions, and/or any adverse effects from global health pandemics and geopolitical conflicts.

These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Annual Report of Trex Company, Inc. on Form 10-K for the year ended December 31, 2023, as filed with the U.S. Securities and Exchange Commission.

3. RECENTLY ADOPTED ACCOUNTING STANDARDS

In December 2022, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2022-06 “Reference Rate Reform (Topic 848): Deferral of the Sunset Date of Topic 848.” The amendments in this update defer the sunset date of Topic 848 from December 31, 2022 to December 31, 2024, after which entities will no longer be permitted to apply the relief in Topic 848. In March 2020, the FASB issued ASU No. 2020-04 “Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting.” These amendments provide temporary optional guidance to ease the potential burden in accounting for reference rate reform. ASU No. 2020-04 provides optional expedients and exceptions for applying generally accepted accounting principles to contract modifications and hedging relationships, subject to meeting certain criteria, that reference the London Interbank Offered Rate (LIBOR) or another reference rate expected to be discontinued. The FASB included a sunset provision within Topic 848 based on the expectations of when the LIBOR would cease being published intended to help stakeholders during the global market-wide reference rate transition period. The guidance is effective for all entities as of March 12, 2020 through December 31, 2024 and can be adopted as of any date from the beginning of an interim period that includes or is subsequent to March 12, 2020. The amendments did not have a material effect on the Company’s consolidated financial statements.

6

4. NEW ACCOUNTING STANDARDS NOT YET ADOPTED

In November 2023, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures.” The guidance requires disclosure of significant segment expenses which are regularly provided to the chief operating decision maker (CODM), the composition of and amount of other segment items, the CODM’s title and position within the organization, and how the CODM uses the reported measure(s) of segment’s profit or loss to assess the performance of the segment. In addition, on an interim basis, all segment profit or loss and asset disclosures currently required on an annual basis must be reported, as well as those required by Topic 280. The guidance allows for multiple measure of a segment’s profit or loss to be reported. Entities which have a single reportable segment must apply Topic 280 in its entirety. The guidance is effective for fiscal years beginning after December 15, 2023, and for interim periods beginning after December 15, 2024. Early adoption is permitted. Entities are required to apply the amendments of this update retrospectively for all prior periods presented in the financial statements. The Company does not intend to early adopt the standard and does not expect adoption of this guidance to have a material effect on its consolidated results of operations and financial position.

In December 2023, the FASB issued ASU No. 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures.” The guidance requires public entities to disclose additional categories of information related to federal, state, and foreign income taxes and additional details related to reconciling items should they meet a quantitative threshold. The guidance requires disclosure of income taxes paid (net of refunds received) disaggregated by federal, state, and foreign taxes and to disaggregate the information by jurisdiction based on quantitative thresholds. The guidance is effective for fiscal years beginning after December 15, 2024. Early adoption is permitted. The guidance should be applied on a prospective basis, retrospective application is permitted. The Company does not intend to early adopt the standard and does not expect adoption of the guidance to have a material effect on its consolidated results of operations and financial position.

5. INVENTORIES

Inventories valued at LIFO (last-in, first-out), consist of the following (in thousands):

	March 31, 2024			December 31, 2023
Finished goods	$	89,619		$	88,840
Raw materials		67,705			51,688
Total FIFO (first-in, first-out) inventories		157,324			140,528
Reserve to adjust inventories to LIFO value		(33,439	)		(33,439	)
Total LIFO inventories	$	123,885		$	107,089

The Company utilizes the LIFO method of accounting, which generally provides for the matching of current costs with current revenues. However, under the LIFO method, reductions in annual inventory balances may cause a portion of the Company’s cost of sales to be based on historical costs rather than current year costs (LIFO liquidation). Reductions in interim inventory balances expected to be replenished by year-end do not result in a LIFO liquidation. Accordingly, interim LIFO calculations are based, in part, on management’s estimates of expected year-end inventory levels and costs and may differ from actual results. Since inventory levels and costs are subject to factors beyond management’s control, interim results are subject to the final year-end LIFO inventory valuation. There were no LIFO inventory liquidations or related impact on the cost of sales in the three months ended March 31, 2024.

6. PREPAID EXPENSES AND OTHER ASSETS

Prepaid expenses and other assets consist of the following (in thousands):

	March 31, 2024		December 31, 2023
Prepaid expenses	$	12,329	$	11,830
Income tax receivable		—		9,611
Other		629		629
Total prepaid expenses and other assets	$	12,958	$	22,070

7. GOODWILL AND OTHER INTANGIBLE ASSETS, NET

The carrying amount of goodwill at March 31, 2024, and December 31, 2023, was $14.2 million. The Company’s intangible assets, purchased in 2018, consist of domain names. At March 31, 2024, and December 31, 2023, intangible assets were $6.3 million and accumulated amortization was $2.5 million and $2.4 million, respectively. Intangible asset amounts were determined based on the estimated economics of the asset and are amortized over the estimated useful lives on a straight-line basis over 15 years, which approximates the pattern in which the economic benefits are expected to be received.

7

The Company evaluates the recoverability of intangible assets periodically and considers events or circumstances that may warrant revised estimates of useful lives or that may indicate an impairment. Intangible asset amortization expense for the three months ended March 31, 2024, and March 31, 2023, was $0.1 million and $0.1 million, respectively.

8. ACCRUED EXPENSES AND OTHER LIABILITIES

Accrued expenses and other liabilities consist of the following (in thousands):

	March 31, 2024		December 31, 2023
Sales and marketing	$	33,754	$	15,496
Income Taxes		24,104		—
Compensation and benefits		16,719		25,859
Operating lease liabilities		7,629		7,663
Manufacturing costs		3,193		3,382
Other		6,541		4,334
Total accrued expenses and other liabilities	$	91,940	$	56,734

9. DEBT

Revolving Credit Facility

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

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

In conjunction with the First Amendment, on 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 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.

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

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

8

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

The Company had $223 million in borrowings outstanding under its revolving credit facility and available borrowing capacity of $327 million at March 31, 2024. The weighted average interest rate on the revolving credit facility was 6.22% as of March 31, 2024.

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 as of March 31, 2024. 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.

10. LEASES

The Company leases manufacturing and training facilities, storage warehouses, office space, and certain plant equipment under various operating leases. The Company’s operating leases have remaining lease terms of 1 year to 5 years. Lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option.

For the three months ended March 31, 2024 and March 31, 2023, total operating lease expense was $2.0 million and $2.1 million, respectively. The weighted average remaining lease term at March 31, 2024 and December 31, 2023 was 4.2 years and 4.4 years, respectively. The weighted average discount rate at March 31, 2024 and December 31, 2023 was 2.38% and 2.32%, respectively.

The following table includes supplemental cash flow information for the three months ended March 31, 2024 and March 31, 2023, and supplemental balance sheet information at March 31, 2024 and December 31, 2023 related to operating leases (in thousands):

	Three Months Ended March 31,
Supplemental cash flow information	2024		2023
Cash paid for amounts included in the measurement of operating lease liabilities	$	2,007	$	2,120
Operating ROU assets obtained in exchange for lease liabilities	$	578	$	1,541

Supplemental balance sheet information	March 31, 2024		December 31, 2023
Operating lease ROU assets	$	25,010	$	26,233
Operating lease liabilities:
Accrued expenses and other current liabilities	$	7,629	$	7,663
Operating lease liabilities		17,602		18,840
Total operating lease liabilities	$	25,231	$	26,503

The following table summarizes maturities of operating lease liabilities at March 31, 2024 (in thousands):

Maturities of operating lease liabilities
2024	$	5,942
2025		5,950
2026		5,051
2027		4,549
2028		3,982
Thereafter		934
Total lease payments		26,408
Less imputed interest		(1,177	)
Total operating lease liabilities	$	25,231

9

11. FINANCIAL INSTRUMENTS

The Company considers the recorded value of its financial assets and liabilities, consisting primarily of cash and cash equivalents, accounts receivable, accounts payable, accrued expenses, other current liabilities, and debt to approximate the fair value of the respective assets and liabilities on the Condensed Consolidated Balance Sheets at March 31, 2024 and December 31, 2023.

12. STOCKHOLDERS’ EQUITY

Earnings Per Share

The following table sets forth the computation of basic and diluted earnings per share (in thousands, except share and per share data):

	Three Months Ended March 31,
	2024		2023
Numerator:
Net income available to common shareholders	$	89,070	$	41,131
Denominator:
Basic weighted average shares outstanding		108,640,168		108,771,958
Effect of dilutive securities:
Stock appreciation rights and options		71,202		70,004
Restricted stock		79,255		74,299
Diluted weighted average shares outstanding		108,790,625		108,916,261
Basic earnings per share	$	0.82	$	0.38
Diluted earnings per share	$	0.82	$	0.38

Diluted earnings per share is computed using the weighted average number of shares determined for the basic earnings per share computation plus the dilutive effect of common stock equivalents using the treasury stock method. The computation of diluted earnings per share excludes the following potentially dilutive securities because the effect would be anti-dilutive:

	Three Months Ended March 31,
	2024			2023
Stock appreciation rights		55,132			108,749
Restricted stock		48,597			107,571

Stock Repurchase Program

On February 16, 2018, the Board of Directors adopted the 2018 Stock Repurchase Program of up to 11.6 million shares of the Company’s outstanding common stock (Stock Repurchase Program). On May 4, 2023, the Trex Board of Directors adopted a new stock repurchase program (2023 Stock Repurchase Program) of up to 10.8 million shares of its outstanding common stock, and terminated the existing Stock Repurchase Program. The 2023 Stock Repurchase Program has no set expiration date. During the three months ended March 31, 2024, Trex did not repurchase any shares of its outstanding common stock under the 2023 Stock Repurchase Program.

13. REVENUE FROM CONTRACTS WITH CUSTOMERS

The Company principally generates revenue from the manufacture and sale of its high-performance, low-maintenance, eco-friendly wood-alternative composite decking and railing products and accessories. Substantially all of its revenues are from contracts with customers, which are purchase orders of short-term duration of less than one year. Its customers, in turn, sell primarily to the residential market, which includes replacement, remodeling and new construction related to outdoor living products. The Company satisfies its performance obligations at a point in time. The shipment

10

of each product is a separate performance obligation as the customer is able to derive benefit from each product shipped and no performance obligation remains after shipment. Upon shipment of the product, the customer obtains control over the distinct product and Trex satisfies its performance obligation. Any performance obligation that remains unsatisfied at the end of a reporting period is part of a contract that has an original expected duration of one year or less. Any variable consideration related to the unsatisfied performance obligation is allocated wholly to the unsatisfied performance obligation, is 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 Condensed Consolidated Financial Statements. For the three months ended March 31, 2024 and March 31, 2023, the Company’s net sales of $373,635 and $238,718, respectively, were recognized at a point in time upon transfer of its outdoor living products under variable consideration contracts into the building products market.

14. STOCK-BASED COMPENSATION

At the annual meeting of stockholders of the Company held on May 4, 2023, the Company’s stockholders approved the Trex Company, Inc. 2023 Stock Incentive Plan (Plan). The Company’s board of directors unanimously approved the Plan on April 10, 2023, subject to stockholder approval. The Plan amends and restates in its entirety the Trex Company, Inc. 2014 Stock Incentive Plan (2014 Plan), which was last approved by the Company’s stockholders at the annual meeting held on April 30, 2014. The Plan, which will be administered by the compensation committee of the board of directors, provides for the grant of stock options, restricted stock, restricted stock units, stock appreciation rights and unrestricted stock, which are referred to collectively as “awards.” Awards may be granted under the Plan to officers, directors (including non-employee directors) and other employees of the Company or any subsidiary thereof, to any adviser, consultant, or other provider of services to the Company (and any employee thereof), and to any other individuals who are approved by the board of directors as eligible to participate in the Plan. Only employees of the Company or any subsidiary thereof are eligible to receive incentive stock options. Subject to certain adjustments as provided in the Plan, the total number of shares of common stock available for future grants under the Plan is 4,000,000 shares.

The following table summarizes the Company’s stock-based compensation grants for the three months ended March 31, 2024:

	Stock Awards Granted		Weighted-Average Grant Price Per Share
Time-based restricted stock units		48,628	$	90.86
Performance-based restricted stock units (a)		80,371	$	81.01
Stock appreciation rights		33,277	$	84.72

(a) Includes 55,834 of target performance-based restricted stock unit awards granted during the three months ended March 31, 2024, and adjustments of 25,315, and (778) to grants due to the actual performance level achieved for restricted stock and restricted stock units awarded in 2023 and 2021, respectively.

The fair value of each SAR is estimated on the date of grant using a Black-Scholes option-pricing formula. For SARs issued in the three months ended March 31, 2024 and March 31, 2023, the data and assumptions shown in the following table were used:

	Three Months Ended March 31, 2024			Three Months Ended March 31, 2023
Weighted-average fair value of grants	$	44.83		$	27.19
Dividend yield		0	%		0	%
Average risk-free interest rate		4.3	%		4.0	%
Expected term (years)		5			5
Expected volatility		51.2	%		49.5	%

11

The Company recognizes stock-based compensation expense ratably over the period from the grant date to the earlier of: (1) the vesting date of the award, or (2) the date the grantee is eligible to retire without forfeiting the award. For performance-based restricted stock and performance-based restricted stock units, expense is recognized ratably over the performance and vesting period of each tranche based on management’s judgment of the ultimate award that is likely to be paid out based on the achievement of the predetermined performance measures. For the employee stock purchase plan, compensation expense is recognized related to the discount on purchases. Stock-based compensation expense is included in “Selling, general and administrative expenses” in the Condensed Consolidated Statements of Comprehensive Income. The following table summarizes the Company’s stock-based compensation expense (in thousands):

	Three Months Ended March 31,
	2024		2023
Stock appreciation rights	$	271	$	215
Time-based restricted stock and restricted stock units		1,074		935
Performance-based restricted stock and restricted stock units		1,642		724
Employee stock purchase plan		166		98
Total stock-based compensation	$	3,153	$	1,972

Total unrecognized compensation cost related to unvested awards as of March 31, 2024 was $23.7 million. The cost of these unvested awards is being recognized over the requisite vesting period of each award.

15. INCOME TAXES

The Company’s effective tax rate for the three months ended March 31, 2024 and March 31, 2023, was 25.2%, which resulted in income tax expense of $29.9 million and $13.8 million, respectively.

During the three months ended March 31, 2024 and March 31, 2023, the Company realized $0.6 million and $0.2 million, respectively, of excess tax benefits from stock-based awards and recorded a corresponding benefit to income tax expense.

The Company analyzes its deferred tax assets each reporting period, considering all available positive and negative evidence in determining the expected realization of those deferred tax assets. As of March 31, 2024, the Company maintains a valuation allowance of $3.3 million against deferred tax assets primarily related to state tax credits it estimates will expire before they are realized.

The Company operates in multiple tax jurisdictions, and, in the normal course of business, its tax returns are subject to examination by various taxing authorities. Such examinations may result in future assessments by these taxing authorities, and the Company accrues a liability when it believes that it is more likely than not that benefits of tax positions will not be realized. The Company believes that adequate provisions have been made for all tax returns subject to examination. As of March 31, 2024, for certain tax jurisdictions tax years 2020 through 2023 remain subject to examination. The Company believes that adequate provisions have been made for all tax returns subject to examination. Sales made to foreign distributors are not taxable in any foreign jurisdiction as the Company does not have a taxable presence in any foreign jurisdiction.

16. SEASONALITY

The operating results for Trex 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 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.

17. COMMITMENTS AND CONTINGENCIES

Product Warranty

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

12

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. The Company further warrants 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, the Company has 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. The Company further warrants 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, the Company has an obligation either to replace the defective product or refund the purchase price.

The Company maintains a warranty reserve for the settlement of its product warranty claims. The Company accrues for the estimated cost of product warranty claims at the time revenue is recognized based on such factors as historical claims experience and future claims experience. Management reviews and adjusts these estimates, if necessary, based on the differences between actual experience and historical estimates. Additionally, the Company accrues for warranty costs associated with occasional or unanticipated product quality issues if a loss is probable and can be reasonably estimated, as necessary.

The Company continues to receive and settle claims for decking products manufactured at its Nevada facility prior to 2007 that exhibit surface flaking and maintains 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 claims to be settled with payment, the Company utilizes actuarial techniques to determine a reasonable possible range 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 to determine its best estimate of future claims for which to record a related liability. 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.

The Company monitors surface flaking claims activity each quarter for indications that its 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 the Company’s 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 three months ended March 31, 2024, was lower than the number of claims received in the three months ended March 31, 2023, and lower than the Company’s expectations for 2024. Average cost per claim experienced in the three months ended March 31, 2024, was lower than that experienced in the three months ended March 31, 2023 and lower than the Company’s expectations for 2024. The Company believes the reserve at March 31, 2024 is sufficient to cover future surface flaking obligations.

The Company’s 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 the Company’s financial condition, results of operations or cash flows. The Company estimates 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. The Company estimates 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 $1.0 million change in the surface flaking warranty reserve.

13

The following is a reconciliation of the Company’s product warranty reserve (in thousands):

	Three Months Ended March 31, 2024
	Product Warranty			Surface Flaking			Total
Beginning balance, January 1	$	12,066		$	10,112		$	22,178
Provisions and changes in estimates		2,068			—			2,068
Settlements made during the period		(924	)		(188	)		(1,112	)
Ending balance, March 31	$	13,210		$	9,924		$	23,134

	Three Months Ended March 31, 2023
	Product Warranty			Surface Flaking			Total
Beginning balance, January 1	$	9,694		$	15,905		$	25,599
Provisions and changes in estimates		1,945			—			1,945
Settlements made during the period		(551	)		(316	)		(867	)
Ending balance, March 31	$	11,088		$	15,589		$	26,677

Legal Matters

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.

Arkansas Facility

In October 2021, the Company announced plans to add a third U.S.-based manufacturing facility located in Little Rock, Arkansas, on approximately 300 acres of land. The development approach and related expenditures for the new campus will be modular and calibrated to demand trends for the Company’s outdoor living products. Construction began on the new facility in the second quarter of 2022, and in July 2022, the Company entered into a design-build agreement. Construction for the new facility will be funded primarily through the Company’s ongoing cash generation or its line of credit.

14

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following management discussion should be read in conjunction with the Trex Company, Inc. (Trex, Company, we or our) Annual Report on Form 10-K for the year ended December 31, 2023 filed with the U.S. Securities and Exchange Commission (SEC) and the condensed consolidated financial statements and notes thereto included in Part I, Item 1. “Financial Statements” of this quarterly report.

NOTE ON FORWARD-LOOKING STATEMENTS

This management’s discussion and analysis 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” in our Annual Report on Form 10-K for the year ended December 31, 2023 filed with the SEC. 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 warranty claims, product replacement and consumer relations expenses related to product quality; the highly competitive markets in which the Company operates; cyber-attacks, security breaches or other security vulnerabilities; the impact of current and upcoming data privacy laws and the EU General Data Protection Regulation and the related actual or potential costs and consequences; material adverse impacts from global public health pandemics, 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 Condensed Consolidated Financial Statements and the accompanying notes thereto contained in “Item 1. Condensed Consolidated Financial Statements” of this report. MD&A includes the following sections:

• Operations and Products — a general description of our business, a brief overview of our reportable segment’s products, and a discussion of our operational highlights.

• Highlights and Financial Performance Quarter-to-Date and Year-to-Date – a summary of financial performance and highlights for the three months ended March 31, 2024, a general discussion of factors that may affect our operations, and a description of relevant financial statement line items.

• Results of Operations — an analysis of our consolidated results of operations for the three months ended March 31, 2024 compared to the three months ended March 31, 2023, respectively.

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

OPERATIONS AND PRODUCTS

Trex is the world’s largest manufacturer of high-performance composite decking and residential railing products, which are marketed under the brand name Trex^® and manufactured in the United States. With more than 30 years of product experience, we offer a comprehensive set of aesthetically appealing and durable, low-maintenance product offerings in the decking, residential railing, fencing and outdoor lighting categories. A majority of the products are eco-friendly and leverage recycled and reclaimed materials to the extent possible. Trex decking is made in a proprietary process that combines reclaimed wood fibers and recycled polyethylene film, making Trex one of the largest recyclers of plastic film in North America. In addition to resisting fading and surface staining, Trex products require no sanding and sealing, resist moisture damage, provide a splinter-free surface and do not

15

require chemical treatment against rot or insect infestation. Combined, these aspects yield significant aesthetic advantages and lower maintenance than wood decking and railing and ultimately render Trex products less costly than wood over the life of the deck. 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. Trex products are sold to distributors and home centers for final resale primarily to the residential market.

Trex offers the following products:

Decking and Accessories	Our principal decking products are Trex Signature®, Trex Transcend® Lineage™, Trex Transcend®, Trex Select®, and Trex Enhance®. In addition, our Trex Transcend decking product can also be used as cladding. Our high-performance, low-maintenance, eco-friendly composite decking products are comprised of a blend of 95 percent reclaimed wood fibers and recycled polyethylene film and feature a protective polymer shell for enhanced protection against fading, staining, mold and scratching. Trex Signature decking offers realistic woodgrain aesthetics that raises the bar for beauty, performance and sustainability and is available in two luxurious hues inspired by stunning natural settings. Trex Transcend Lineage is the next generation of design and performance in composite decking and is available in four luxurious, on-trend hues inspired by some of the most picturesque locales in the United States. Our Trex Transcend decking provides elevated aesthetics paired with the highest level of performance and is available in eight multi-tonal monochromatic classical earth tones and premium tropical colors. Trex Select decking offers the perfect pairing of price and minimal maintenance and is available in five nature-inspired earth tone colors. Our Trex Enhance boards pair the beauty of authentic wood-grain appearance with the durability of composite with minimal maintenance and the affordability of wood and is available in natural and basic colors. We also offer accessories to our decking products. Trex Hideaway®, a self-gapping universal hidden fastener designed to give a seamless finish to every project. Trex DeckLighting™, an outdoor lighting system, is a line of energy-efficient LED dimmable deck lighting designed to use 75% less energy compared to incandescent lighting. It can be installed into the railing, stair risers or the deck itself. The line includes a post cap light, deck rail light, riser light, a soffit light and a recessed deck light. Pre-assembled stair panels that allow for easier installation are designed to save time on the jobsite.
Railing	Our railing products are Trex Transcend Railing, Trex Select Railing, and Trex Signature® aluminum railing. Our high-performance composite and aluminum deck railing kits and systems are sustainably manufactured, easy to install and durable. Trex railing systems are built with the same durability as Trex decking and won’t rot, warp, peel or splinter and resist fading and corrosion. Trex Transcend Railing, made from approximately 40 percent recycled content, is available in the colors of Trex Transcend decking and finishes that make it appropriate for use with Trex decking products as well as other decking materials, which we believe enhances the sales prospects of our railing products. Trex Select Railing, made from approximately 40 percent recycled content, is offered in a white finish and is ideal for consumers who desire a simple clean finished look for their deck. Trex Signature aluminum railing, made from a minimum of 40 percent recycled content, is available in three colors and designed for consumers who want a sleek, contemporary look.
Fencing	Our Trex Seclusions® composite fencing product is offered through two specialty distributors. This product consists of structural posts, bottom rail, pickets, top rail and decorative post caps. The top and bottom rails of Trex fencing are designed to provide a “picture frame’ element and the deep rich colors have a matte surface to prevent harsh sunlight reflections.

16

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® Outdoor Furniture™	A line of outdoor furniture products manufactured and sold by PolyWood, Inc.
Trex® RainEscape®, Trex® Protect®, Trex® RainEscape® Soffit Light, and Trex® Seal™ Ledger Flashing Tape	An above joist deck drainage system manufactured and sold by IBP, LLC. Trex Protect Joist, Beam and Rim tape is a self-adhesive butyl tape that protects wooden deck framing/substructure elements. Trex RainEscape Soffit Light is a plug-and-play LED Soffit light that is installed in the under-deck ceiling of a two-story deck. Trex Seal Ledger Flashing tape is butyl flashing tape with an aluminum liner.
Trex® Pergola™	Pergolas made from low maintenance cellular PVC and all-aluminum product, manufactured by Home & Leisure, Inc. dba Structureworks Fabrication.
Trex® Lattice™	Outdoor lattice boards manufactured and sold by Structureworks Fabrication.
Trex® Cornhole™	Cornhole boards manufactured and sold by IPC Global Marketing LLC.
Trex® Blade™	A specialty saw blade for wood-alternative composite decking manufactured and sold by Freud America, Inc.
Trex® SpiralStairs	A staircase alternative for use with all deck substructures manufactured and sold by SS Industries dba Paragon Stairs.
Trex® Outdoor Kitchens™	Outdoor kitchen cabinetry manufactured and sold by Danver Outdoor Kitchens.

Highlights:

• Trex Named Most Sustainable Decking Brand by Green Builder Media for 14^th Consecutive Year and the only brand to be recognized as a sustainability leader for all 14 years of the program.

• Trex Expands Railing Portfolio with Launch of Trex Signature^® X-Series^TM. Trex has launched two new specialty railing offerings with Trex Signature^® X-Series^TM Cable Rail and Trex Signature^® X-Series^TM Frameless Glass Rail.

• Trex Transcend^® Lineage recognized by Good Housekeeping as a winner in their 2024 Sustainable Innovation Awards.

• Trex Ranked Among Barron’s 100 Most Sustainable Companies for 2024. Trex was honored by Baron’s for outstanding leadership in environmental, social, and governance practices and was the only decking brand to be included on this year’s list.

• Trex awarded Morris Tolly National Supplier of the Year by Builders FirstSource, and Supplier of the Year for the Northeast Region.

• Trex Launches Comprehensive Fastener Collection. In February 2024, Trex launched its Hideaway^® Fastener Collection, providing solutions for every composite deck fastening and finishing need.

• Trex Celebrated with Six Awards for Product Excellence and Innovation for decking and railing products from organizations representing audiences and input from across the building industry.

HIGHLIGHTS AND FINANCIAL PERFORMANCE QUARTER-TO-DATE AND YEAR-TO-DATE

Financial performance. The following table presents quarter-to-date highlights of our financial performance:

	Three Months Ended March 31,
	2024		2023		$ Change		% Change
($000s omitted, except per share data)
Net sales	$	373,635	$	238,718	$	134,917		56.5	%
Gross profit	$	169,612	$	94,428	$	75,183		79.6	%
Net income	$	89,070	$	41,131	$	47,939		116.6	%
EBITDA*	$	133,166	$	68,862	$	64,304		93.4	%
Diluted earnings per share	$	0.82	$	0.38	$	0.44		115.8	%

* A reconciliation of Net Income (GAAP) to EBITDA (non-GAAP) is presented on page 23 of this document under “Net Income and Earnings Before Interest, Taxes, Depreciation and Amortization (EBITDA).”

17

Capital expenditures. During the 2024 first quarter, our capital expenditures were $37.7 million primarily related to $21.7 million for the Arkansas manufacturing facility, $4.5 million in cost reduction initiatives, and $5.1 million in capacity expansion in our existing facilities and safety, environmental and general support.

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.

Net Sales. Net sales consist of sales, net of discounts. The level of net sales is principally affected by sales volume and the prices paid for Trex products. Trex operating results have historically varied from quarter to quarter. Seasonal, erratic or prolonged adverse weather conditions in certain geographic regions reduce the level of home and commercial improvement and residential and commercial construction and can shift demand for our products to a later period. As part of our normal business practice and consistent with industry practice, we have historically provided our distributors and dealers of our Trex products incentives to build inventory levels before the start of the prime deck-building season to ensure adequate availability of our product to meet anticipated seasonal consumer demand and to enable production planning. These incentives include payment discounts, favorable payment terms, 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 our incentive programs can significantly impact sales, receivables and inventory levels during the offering period.

Gross Profit. Gross profit represents the difference between net sales and cost of sales. Cost of sales consists of raw material costs, direct labor costs, manufacturing costs, subcontract costs and freight. Raw material costs generally include the costs to purchase and transport reclaimed wood fiber, reclaimed polyethylene, pigmentation for coloring our products, and commodities used in the production of railing and staging. 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 includes 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. 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 may vary from quarter to quarter due, in part, to the seasonality of our business.

Below is the discussion and analysis of our operating results and material changes in our operating results for the three months ended March 31, 2024 (2024 quarter) compared to the three months ended March 31, 2023 (2023 quarter).

Three Months Ended March 31, 2024 Compared To The Three Months Ended March 31, 2023

Net Sales

	Three Months Ended March 31,				$ Change		% Change
	2024		2023
	(dollars in thousands)
Net sales	$	373,635	$	238,718	$	134,917		56.5	%

Net sales increased by $134.9 million, or 56.5%, in the 2024 quarter compared to the 2023 quarter. The increase was substantially all due to an increase in volume, driven, in part, by changes to our early-buy program running January to March, rather than our historical December to March time frame. This change accounted for $75 million or approximately 31% of the growth in the quarter. The remainder of the growth is due to the expectations of continued favorable economic conditions for Trex’s outdoor living products.

18

Gross Profit

	Three Months Ended March 31,						$ Change		% Change
	2024			2023
	(dollars in thousands)
Cost of sales	$	204,023		$	144,290		$	59,733		41.4	%
% of total net sales		54.6	%		60.4	%
Gross profit	$	169,612		$	94,428		$	75,184		79.6	%
Gross margin		45.4	%		39.6	%

Gross profit as a percentage of net sales, gross margin, was 45.4% in the 2024 quarter compared to 39.6% in the 2023 quarter. The increase was primarily due to increased capacity utilization as our channel partners build appropriate inventories to support the decking/railing season and cost efficiency programs.

Selling, General and Administrative Expenses

	Three Months Ended March 31,						$ Change		% Change
	2024			2023
	(dollars in thousands)
Selling, general and administrative expenses	$	50,600		$	37,480		$	13,120		35.0	%
% of total net sales		13.5	%		15.7	%

Selling, general and administrative expenses increased $13.1 million in the 2024 quarter. The increase primarily related to a $8.7 million increase in personnel related expenses and a $3.2 million increase in branding and marketing program spend for newly launched products.

Provision for Income Taxes

	Three Months Ended March 31,						$ Change		% Change
	2024			2023
	(dollars in thousands)
Provision for income taxes	$	29,947		$	13,832		$	16,115		116.5	%
Effective tax rate		25.2	%		25.2	%

The effective tax rate for the 2024 quarter and the 2023 quarter was 25.2%.

19

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

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

	Three Months Ended March 31, 2024			Three Months Ended March 31, 2023
Net Income	$	89,070		$	41,131
Interest income (expense), net		(5	)		1,985
Income tax expense		29,947			13,832
Depreciation and amortization		14,154			11,914
EBITDA	$	133,166		$	68,862

	Three Months Ended March 31,				$ Change		% Change
	2024		2023
	(dollars in thousands)
EBITDA	$	133,166	$	68,862	$	64,304		93.4	%

EBITDA increased 93.4% to $133.2 million for the 2024 quarter compared to $68.9 million for the 2023 quarter. The increase in EBITDA was driven primarily by an increase in net sales and gross profit.

LIQUIDITY AND CAPITAL RESOURCES

We finance operations and growth primarily with cash flows from operations, borrowings under our revolving credit facilities, operating leases and normal trade credit terms from operating activities. At March 31, 2024, we had $3.1 million of cash and cash equivalents.

Sources and Uses of Cash. The following table summarizes our cash flows from operating, investing and financing activities (in thousands):

	Three Months Ended March 31,
	2024			2023
Net cash used in operating activities	$	(174,044	)	$	(115,471	)
Net cash used in investing activities		(37,614	)		(39,192	)
Net cash provided by financing activities		212,752			146,254
Net increase (decrease) in cash and cash equivalents	$	1,094		$	(8,409	)

Operating Activities

Cash used in operations was $174 million during the first quarter of 2024 compared to cash used in operations of $115.5 million during the first quarter of 2023. The $58.5 million increase in cash used in operating activities was primarily related to an increase in accounts receivable and inventories. The increase in accounts receivable is primarily driven by the increase in net sales in the first quarter of 2024 compared to the first quarter of 2023. Substantially all of the accounts receivables balances as of March 31, 2024 will be collected during the second quarter of 2024. The increase in inventories is the result of increased production in the first quarter of 2024 compared to the first quarter of 2023. The effects of the increase in accounts receivable and inventory were offset, in part, by higher earnings and increases in accounts payable, accrued expenses, and income taxes payable.

Investing Activities

Capital expenditures in the 2024 quarter were $37.7 million primarily related to $21.7 million for the Arkansas manufacturing facility, $4.5 million in cost reduction initiatives, and $5.1 million in capacity expansion in our existing facilities and safety, environmental and general support.

Financing Activities

Net cash provided by financing activities in the 2024 quarter consisted primarily of net borrowings under our line of credit.

¹  EBITDA represents net income before interest, income taxes, depreciation and amortization. EBITDA is not a measurement of financial performance under accounting principles generally accepted in the United States (GAAP). We have included data with respect to EBITDA because management believes it facilitates performance comparison between the Company and its competitors, and management evaluates the performance of its reportable segments using several measures, including EBITDA. Management considers EBITDA to be an important supplemental indicator of our core operating performance because it eliminates interest, income taxes, and depreciation and amortization charges to net income or loss. In relation to competitors, EBITDA eliminates differences among companies in capitalization and tax structures, capital investment cycles and ages of related assets. For these reasons, management believes that EBITDA provides important information regarding the operating performance of the Company and its reportable segments. Non-GAAP financial measures should be viewed in addition to, and not as an alternative for, the Company’s reported results prepared in accordance with GAAP and are not meant to be considered superior to or a substitute for our GAAP results.

20

Stock Repurchase Program. On February 16, 2018, the Trex Board of Directors adopted a stock repurchase program of up to 11.6 million shares of its outstanding common stock (Stock Repurchase Program). As of March 31, 2023, the Company has repurchased 10.1 million shares under the Stock Repurchase Program. On May 4, 2023, the Trex Board of Directors adopted a new stock repurchase program of up to 10.8 million shares of its outstanding common stock, and terminated the existing Stock Repurchase Program. This repurchase program has no set expiration date. During the three months ended March 31, 2024, the Company did not repurchase any shares of its common stock under the 2023 Stock Repurchase Program.

Revolving Credit Facility

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

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

In conjunction with the First Amendment, on 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 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.

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

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

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

At March 31, 2024, we had $223 million in outstanding borrowings under the revolving credit facility and borrowing capacity under the facility of $327 million.

Compliance with Debt Covenants. 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 as of March 31, 2024. 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.

21

We believe that cash on hand, cash from operations and borrowings expected to be available under our revolving credit facilities will provide sufficient funds to fund planned capital expenditures, make scheduled principal and interest payments, fund warranty payments, and meet other cash requirements. We currently expect to fund future capital expenditures from operations and financing activities. 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.

Capital Requirements. In October 2021, we announced plans to add a third U.S.-based manufacturing facility located in Little Rock, Arkansas, on approximately 300 acres of land that will address increased demand for Trex outdoor living products. The development approach and related expenditures for the new campus will be modular and calibrated to demand trends for Trex outdoor living products. Our capital expenditure guidance for 2024 is $210 million to $230 million and includes estimated expenditures for the development of the Arkansas facility in 2024. Construction for the new facility will be funded primarily through the Company’s ongoing cash generation or its line of credit.

In addition to the construction of the Arkansas facility, our capital allocation priorities for 2024 include expenditures for internal growth opportunities, manufacturing cost reductions, upgrading equipment and support systems, and acquisitions which fit our long-term growth strategy as we continue to evaluate opportunities that would be a good strategic fit for Trex, and return of capital to shareholders.

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

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

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

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

We maintain a warranty reserve for the settlement of our product warranty claims. We accrue for the estimated cost of product warranty claims at the time revenue is recognized based on such factors as historical claims experience and future claims experience. We review and adjust these estimates, if necessary, based on the differences between actual experience and historical estimates. Additionally, we accrue for warranty costs associated with occasional or unanticipated product quality issues if a loss is probable and can be reasonably estimated.

We continue to receive and settle claims for 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.

22

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 three months ended March 31, 2024, was lower than the number of claims received in the three months ended March 31, 2023, and lower than our expectations for 2024. Average cost per claim experienced in the three months ended March 31, 2024, was lower than that experienced in the three months ended March 31, 2023 and lower than our expectations for 2024. We believe the reserve at March 31, 2024 is sufficient to cover future surface flaking obligations.

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 $1.0 million change in the surface flaking warranty reserve.

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

	Three Months Ended March 31,
	2024			2023
Claims open, beginning of period		1,695			1,729
Claims received (1)		69			81
Claims resolved (2)		(65	)		(81	)
Claims open, end of period		1,699			1,729
Average cost per claim (3)	$	3,460		$	4,114

(1) Claims received include new claims received or identified during the period.

(2) Claims resolved include all claims settled with or without payment and closed during the period.

(3) Average cost per claim represents the average settlement cost of claims closed with payment during the period.

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

Item 3. Quantitative and Qualitative Disclosures About Market Risk

For information regarding our exposure to certain market risks, see “Quantitative and Qualitative Disclosures about Market Risk,” in Part II, Item 7A of the Company’s Annual Report on Form 10-K for the year ended December 31, 2023. There were no material changes to the Company’s market risk exposure during the three months ended March 31, 2024.

23

Item 4. 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 March 31, 2024. 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. There have been no changes in the Company’s internal control over financial reporting during the three-month period ended March 31, 2024, that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

24

PART II

OTHER INFORMATION

Item 1. Legal Proceedings

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

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

(c) The following table provides information relating to the purchases of our common stock during the three months ended March 31, 2024 in accordance with Item 703 of Regulation S-K:

Period	(a) Total Number of Shares (or Units) Purchased (1)		(b) Average Price Paid per Share (or Unit) ($)		(c) Total Number of Shares (or Units) Purchased as Part of Publicly Announced Plans or Programs (2)		(d) Maximum Number of Shares (or Units) that May Yet Be Purchased Under the Plan or Program
January 1, 2024 – January 31, 2024		—		—		—		10,535,104
February 1, 2024 – February 29, 2024		12,588	$	90.30		—		10,535,104
March 1, 2024 – March 31, 2024		42,515	$	94.53		—		10,535,104
Quarterly period ended March 31, 2024		55,103				—

(1) During the three months ended March 31, 2024, 55,103 shares were withheld by, or delivered to, the Company pursuant to provisions in agreements with recipients of restricted stock granted under the Company’s 2014 and 2023 Stock Incentive Plan allowing the Company to withhold, or the recipient to deliver to the Company, the number of shares having the fair value equal to tax withholding due.

(2) On May 4, 2023, the Trex Board of Directors adopted a new stock repurchase program of up to 10.8 million shares of its outstanding common stock, and terminated the existing Stock Repurchase Program. This repurchase program has no set expiration date and no shares were repurchased under the program during the three months ended March 31, 2024.

Item 5. Other Information

Submission of Matters to a Vote of Security Holders

Trex held its Annual Meeting of Stockholders on May 7, 2024. Only holders of Trex common stock at the close of business on March 11, 2024 (Record Date) were entitled to vote at the Annual Meeting. As of the Record Date, there were 108,687,117 shares of common stock entitled to vote. A total of 99,835,270 shares of common stock (91.86%), constituting a quorum, were represented in person or by valid proxies at the Annual Meeting.

The stockholders voted on three proposals at the Annual Meeting. The proposals are described in detail in the Company’s definitive proxy statement dated March 25, 2024. The final results for the votes regarding each proposal are set forth below.

Proposal 1: Trex stockholders elected four directors to the Board to serve for a three-year term until the 2027 annual meeting of stockholders and until their successors are duly elected and qualified. The votes regarding this proposal were as follows:

	For		Against		Abstain		Broker Non-Votes
James E. Cline		84,323,526		8,046,900		93,358		7,371,486
Gena C. Lovett		90,639,582		1,566,880		257,322		7,371,486
Melkeya McDuffie		91,145,150		1,061,132		257,502		7,371,486
Patricia B. Robinson		85,029,285		7,343,772		90,727		7,371,486

25

Proposal 2: Trex stockholders approved, on an advisory basis, the compensation of the Company’s executive officers named in the Company’s definitive proxy statement dated March 25, 2024. The votes regarding this proposal were as follows:

For	Against	Abstain	Broker Non-Votes
85,747,668	6,605,124	110,992	7,371,486

Proposal 3: Trex stockholders ratified the selection of Ernst & Young LLP as the Company’s independent registered public accounting firm for the fiscal year ended December 31, 2024. The votes regarding this proposal were as follows:

For	Against	Abstain	Broker Non-Votes
95,797,073	3,997,128	61,069	—

Insider Trading Arrangements

During the quarter ended March 31, 2024, none of our directors or officers (as defined in Rule 16a-1(f) of the Exchange Act) adopted, modified or terminated any contract, instruction or written plan for the purchase or sale of our securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) of the Exchange Act or any non-Rule 10b5-1 trading arrangement (as defined in Item 408(c) of Regulation S-K).

Item 6. Exhibits

See Exhibit Index at the end of the Quarterly Report on Form 10-Q for the information required by this Item which is incorporated by reference.

26

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	TREX COMPANY, INC.
Date: May 9, 2024	By:	/s/ Brenda K. Lovcik
		Brenda K. Lovcik
		Senior Vice President and Chief Financial Officer
		(Duly Authorized Officer and Principal Financial Officer)

EXHIBIT INDEX

		Incorporated by reference
Exhibit Number	Description	Form		Exhibit		Filing Date		File No.
3.1	Restated Certificate of Incorporation of Trex Company, Inc. dated July 28, 2021.		10-Q		3.6		August 2, 2021		001-14649
3.2	First Certificate of Amendment to the Restated Certificate of Incorporation of Trex Company, Inc. dated May 5, 2022		10-Q		3.2		May 9, 2022		001-14649
3.3	Amended and Restated By-Laws of the Company dated February 21, 2024		10-K		3.3		February 26, 2024		001-14649
31.1*	Certification of Chief Executive Officer of the Company pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934.
31.2*	Certification of Chief Financial Officer of the Company pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934.
32***	Certifications of Chief Executive Officer and Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. § 1350).
101.INS*	Inline XBRL Instance Document—the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
101.SCH*	Inline XBRL Taxonomy Extension Schema Document.
101.CAL*	Inline XBRL Taxonomy Extension Calculation Linkbase Document.
101.DEF*	Inline XBRL Taxonomy Extension Definition Linkbase Document.
101.LAB*	Inline XBRL Taxonomy Extension Label Linkbase Document.
101.PRE*	Inline XBRL Taxonomy Extension Presentation Linkbase Document.
104.1	Cover Page Interactive Data File—The cover page interactive data file does not appear in the interactive data file because its XBRL tags are embedded within the inline XBRL document.

* Filed herewith.

** Management contract or compensatory plan or agreement.

*** Furnished herewith.

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Bryan H. Fairbanks, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Trex Company, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, 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;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 9, 2024

/s/ Bryan H. Fairbanks

Bryan H. Fairbanks

President and Chief Executive Officer

(Principal Executive Officer)

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Brenda K. Lovcik, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Trex Company, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, 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;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 9, 2024

/s/ Brenda K. Lovcik

Brenda K. Lovcik

Senior Vice President and Chief Financial Officer

(Principal Financial Officer)

EX-32

Exhibit 32

Certifications of Chief Executive Officer and Chief Financial Officer

Pursuant to Section 906

of the Sarbanes-Oxley Act of 2002 (18 U.S.C. Section 1350)

The undersigned, the President and Chief Executive Officer and the Vice President and Chief Financial Officer of Trex Company, Inc. (the “Company”), each hereby certifies that, on the date hereof:

(a) the Quarterly Report on Form 10-Q of the Company for the quarterly period ended March 31, 2024 filed on the date hereof with the U.S. Securities and Exchange Commission (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(b) information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: May 9, 2024	/s/ Bryan H. Fairbanks
	Bryan H. Fairbanks
	President and Chief Executive Officer
Date: May 9, 2024	/s/ Brenda K. Lovcik
	Brenda K. Lovcik
	Senior Vice President and Chief Financial Officer

XML

Cover Page - shares	3 Months Ended
	Mar. 31, 2024	Apr. 25, 2024
Cover [Abstract]
Amendment Flag	false
Document Fiscal Year Focus	2024
Document Type	10-Q
Document Fiscal Period Focus	Q1
Entity Central Index Key	0001069878
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity Registrant Name	Trex Company, Inc.
Document Period End Date	Mar. 31, 2024
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Trading Symbol	TREX
Entity Shell Company	false
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		108,692,757
Entity File Number	001-14649
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	54-1910453
Entity Address, Address Line One	2500 Trex Way
Entity Address, City or Town	Winchester
Entity Address, Postal Zip Code	22601
Entity Address, State or Province	VA
City Area Code	540
Local Phone Number	542-6300
Title of 12(b) Security	Common stock
Security Exchange Name	NYSE
Document Quarterly Report	true

XML

Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Statement [Abstract]
Net sales	$ 373,635	$ 238,718
Cost of sales	204,023	144,290
Gross profit	169,612	94,428
Selling, general and administrative expenses	50,600	37,480
Income from operations	119,012	56,948
Interest (income) expense, net	(5)	1,985
Income before income taxes	119,017	54,963
Provision for income taxes	29,947	13,832
Net income	$ 89,070	$ 41,131
Basic earnings per common share	$ 0.82	$ 0.38
Basic weighted average common shares outstanding	108,640,168	108,771,958
Diluted earnings per common share	$ 0.82	$ 0.38
Diluted weighted average common shares outstanding	108,790,625	108,916,261
Comprehensive income	$ 89,070	$ 41,131

XML

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets
Cash and cash equivalents	$ 3,053	$ 1,959
Accounts receivable, net	373,470	41,136
Inventories	123,885	107,089
Prepaid expenses and other assets	12,958	22,070
Total current assets	513,366	172,254
Property, plant and equipment, net	729,993	709,402
Operating lease assets	25,010	26,233
Goodwill and other intangible assets, net	18,058	18,163
Other assets	6,531	6,833
Total assets	1,292,958	932,885
Current liabilities
Accounts payable	49,350	23,963
Accrued expenses and other liabilities	91,940	56,734
Accrued warranty	4,901	4,865
Line of credit	223,000	5,500
Total current liabilities	369,191	91,062
Deferred income taxes	67,226	72,439
Operating lease liabilities	17,602	18,840
Non-current accrued warranty	18,233	17,313
Other long-term liabilities	16,560	16,560
Total liabilities	488,812	216,214
Commitments and contingencies
Stockholders' equity
Preferred stock, $0.01 par value, 3,000,000 shares authorized; none issued and outstanding	0	0
Common stock, $0.01 par value, 360,000,000 shares authorized; 141,056,063 and 140,974,843 shares issued and 108,692,757 and 108,611,537 share outstanding, at March 31, 2024 and December 31, 2023, respectively	1,411	1,410
Additional paid-in capital	138,561	140,157
Retained earnings	1,425,128	1,336,058
Treasury stock, at cost, 32,363,306 and 32,363,306 shares at March 31, 2024 and December 31, 2023	(760,954)	(760,954)
Total stockholders' equity	804,146	716,671
Total liabilities and stockholders' equity	$ 1,292,958	$ 932,885

XML

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	3,000,000	3,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	360,000,000	360,000,000
Common stock, shares issued	141,056,063	140,974,843
Common stock, shares outstanding	108,692,757	108,611,537
Treasury stock, shares	32,363,306	32,363,306

XML

Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]
Beginning Balance at Dec. 31, 2022	$ 518,349	$ 1,408	$ 131,539	$ 1,130,674	$ (745,272)
Beginning Balance, Shares at Dec. 31, 2022		108,743,423			32,098,410
Net income	41,131			41,131
Employee stock plans	316		316
Employee stock plans, Shares		8,504
Shares withheld for taxes on awards	(1,592)	$ 0	(1,592)
Shares withheld for taxes on awards, Shares		(28,773)
Stock-based compensation	1,973	$ 1	1,972
Stock-based compensation, Shares		80,362
Ending Balance at Mar. 31, 2023	560,177	$ 1,409	132,235	1,171,805	$ (745,272)
Ending Balance, Shares at Mar. 31, 2023		108,803,516			32,098,410
Beginning Balance at Dec. 31, 2023	716,671	$ 1,410	140,157	1,336,058	$ (760,954)
Beginning Balance, Shares at Dec. 31, 2023		108,611,537			32,363,306
Net income	89,070			89,070
Employee stock plans	397		397
Employee stock plans, Shares		5,640
Shares withheld for taxes on awards	(5,146)		(5,146)
Shares withheld for taxes on awards, Shares		(55,103)
Stock-based compensation	3,154	$ 1	3,153
Stock-based compensation, Shares		130,683
Ending Balance at Mar. 31, 2024	$ 804,146	$ 1,411	$ 138,561	$ 1,425,128	$ (760,954)
Ending Balance, Shares at Mar. 31, 2024		108,692,757			32,363,306

XML

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
OPERATING ACTIVITIES
Net income	$ 89,070	$ 41,131
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	14,154	11,915
Deferred Income Taxes	(5,212)	0
Stock-based compensation	3,155	1,972
Loss (gain) on disposal of property, plant and equipment	2,122	0
Other non-cash adjustments	121	121
Changes in operating assets and liabilities:
Accounts receivable	(332,333)	(204,014)
Inventories	(16,796)	13,571
Prepaid expenses and other assets	(319)	291
Accounts payable	26,238	2,975
Accrued expenses and other liabilities	12,041	3,361
Income taxes receivable/payable	33,715	13,206
Net cash used in operating activities	(174,044)	(115,471)
INVESTING ACTIVITIES
Expenditures for property, plant and equipment	(37,720)	(39,192)
Proceeds from sales of property, plant and equipment	106	0
Net cash used in investing activities	(37,614)	(39,192)
FINANCING ACTIVITIES
Borrowings under line of credit	258,500	200,500
Principal payments under line of credit	(41,000)	(53,000)
Repurchases of common stock	(5,145)	(1,592)
Proceeds from employee stock purchase and option plans	397	316
Financing costs	0	30
Net cash provided by financing activities	212,752	146,254
Net increase (decrease) in cash and cash equivalents	1,094	(8,409)
Cash and cash equivalents, beginning of period	1,959	12,325
Cash and cash equivalents, end of period	3,053	3,916
Supplemental Disclosure:
Cash paid for interest, net of capitalized interest	0	1,817
Cash paid for income taxes, net	1,444	733
Supplemental non-cash investing and financing disclosure:
Capital expenditures in accounts payable	$ 851	$ 229

XML

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Pay vs Performance Disclosure
Net Income (Loss)	$ 89,070	$ 41,131

XML

Insider Trading Arrangements	3 Months Ended
	Mar. 31, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

XML

Business and Organization

3 Months Ended

Mar. 31, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Business and Organization

1. BUSINESS AND ORGANIZATION

Trex Company, Inc. (Trex or 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 its products are manufactured in a proprietary process that combines reclaimed wood fibers and scrap polyethylene. The Company is incorporated in Delaware. The principal executive offices are located at 2500 Trex Way, Winchester, Virginia 22601, and the telephone number at that address is (540) 542-6300. The Company operates in a single reportable segment.

XML

Basis of Presentation

3 Months Ended

Mar. 31, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

2. BASIS OF PRESENTATION

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X and, accordingly, the accompanying unaudited condensed consolidated financial statements do not include all of the information and notes required by accounting principles generally accepted in the United States for complete financial statements. In the opinion of management, all adjustments (consisting of normal and recurring adjustments, except as otherwise described herein) considered necessary for a fair presentation have been included in the accompanying unaudited condensed consolidated financial statements. Certain reclassifications have been made to prior period balances to conform to current year presentation. The unaudited condensed consolidated financial statements include the accounts of the Company for all periods presented. Intercompany accounts and transactions have been eliminated in consolidation.

The unaudited consolidated results of operations for the three months ended March 31, 2024, are not necessarily indicative of the results that may be expected for the fiscal year ending December 31, 2024. The Company’s 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, consumer spending and preferences, interest rates, the impact of any supply chain disruptions, economic conditions, and/or any adverse effects from global health pandemics and geopolitical conflicts.

These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Annual Report of Trex Company, Inc. on Form 10-K for the year ended December 31, 2023, as filed with the U.S. Securities and Exchange Commission.

XML

Recently Adopted Accounting Standards

3 Months Ended

Mar. 31, 2024

Accounting Changes and Error Corrections [Abstract]

Recently Adopted Accounting Standards

3. RECENTLY ADOPTED ACCOUNTING STANDARDS

In December 2022, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2022-06 “Reference Rate Reform (Topic 848): Deferral of the Sunset Date of Topic 848.” The amendments in this update defer the sunset date of Topic 848 from December 31, 2022 to December 31, 2024, after which entities will no longer be permitted to apply the relief in Topic 848. In March 2020, the FASB issued ASU No. 2020-04 “Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting.” These amendments provide temporary optional guidance to ease the potential burden in accounting for reference rate reform. ASU No. 2020-04 provides optional expedients and exceptions for applying generally accepted accounting principles to contract modifications and hedging relationships, subject to meeting certain criteria, that reference the London Interbank Offered Rate (LIBOR) or another reference rate expected to be discontinued. The FASB included a sunset provision within Topic 848 based on the expectations of when the LIBOR would cease being published intended to help stakeholders during the global market-wide reference rate transition period. The guidance is effective for all entities as of March 12, 2020 through December 31, 2024 and can be adopted as of any date from the beginning of an interim period that includes or is subsequent to March 12, 2020. The amendments did not have a material effect on the Company’s consolidated financial statements.

XML

New Accounting Standards Not Yet Adopted

3 Months Ended

Mar. 31, 2024

New Accounting Standards Not Yet Adopted [Abstract]

New Accounting Standards Not Yet Adopted

4. NEW ACCOUNTING STANDARDS NOT YET ADOPTED

In November 2023, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures.” The guidance requires disclosure of significant segment expenses which are regularly provided to the chief operating decision maker (CODM), the composition of and amount of other segment items, the CODM’s title and position within the organization, and how the CODM uses the reported measure(s) of segment’s profit or loss to assess the performance of the segment. In addition, on an interim basis, all segment profit or loss and asset disclosures currently required on an annual basis must be reported, as well as those required by Topic 280. The guidance allows for multiple measure of a segment’s profit or loss to be reported. Entities which have a single reportable segment must apply Topic 280 in its entirety. The guidance is effective for fiscal years beginning after December 15, 2023, and for interim periods beginning after December 15, 2024. Early adoption is permitted. Entities are required to apply the amendments of this update retrospectively for all prior periods presented in the financial statements. The Company does not intend to early adopt the standard and does not expect adoption of this guidance to have a material effect on its consolidated results of operations and financial position.

In December 2023, the FASB issued ASU No. 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures.” The guidance requires public entities to disclose additional categories of information related to federal, state, and foreign income taxes and additional details related to reconciling items should they meet a quantitative threshold. The guidance requires disclosure of income taxes paid (net of refunds received) disaggregated by federal, state, and foreign taxes and to disaggregate the information by jurisdiction based on quantitative thresholds. The guidance is effective for fiscal years beginning after December 15, 2024. Early adoption is permitted. The guidance should be applied on a prospective basis, retrospective application is permitted. The Company does not intend to early adopt the standard and does not expect adoption of the guidance to have a material effect on its consolidated results of operations and financial position.

XML

Inventories

3 Months Ended

Mar. 31, 2024

Inventory Disclosure [Abstract]

Inventories

5. INVENTORIES

Inventories valued at LIFO (last-in, first-out), consist of the following (in thousands):

	March 31, 2024			December 31, 2023
Finished goods	$	89,619		$	88,840
Raw materials		67,705			51,688
Total FIFO (first-in, first-out) inventories		157,324			140,528
Reserve to adjust inventories to LIFO value		(33,439	)		(33,439	)
Total LIFO inventories	$	123,885		$	107,089

The Company utilizes the LIFO method of accounting, which generally provides for the matching of current costs with current revenues. However, under the LIFO method, reductions in annual inventory balances may cause a portion of the Company’s cost of sales to be based on historical costs rather than current year costs (LIFO liquidation). Reductions in interim inventory balances expected to be replenished by year-end do not result in a LIFO liquidation. Accordingly, interim LIFO calculations are based, in part, on management’s estimates of expected year-end inventory levels and costs and may differ from actual results. Since inventory levels and costs are subject to factors beyond management’s control, interim results are subject to the final year-end LIFO inventory valuation. There were no LIFO inventory liquidations or related impact on the cost of sales in the three months ended March 31, 2024.

XML

Prepaid Expenses and Other Assets

3 Months Ended

Mar. 31, 2024

Text Block [Abstract]

Prepaid Expenses and Other Assets

6. PREPAID EXPENSES AND OTHER ASSETS

Prepaid expenses and other assets consist of the following (in thousands):

	March 31, 2024		December 31, 2023
Prepaid expenses	$	12,329	$	11,830
Income tax receivable		—		9,611
Other		629		629
Total prepaid expenses and other assets	$	12,958	$	22,070

XML

Goodwill and Other Intangible Assets, Net

3 Months Ended

Mar. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets, Net

7. GOODWILL AND OTHER INTANGIBLE ASSETS, NET

The carrying amount of goodwill at March 31, 2024, and December 31, 2023, was $14.2 million. The Company’s intangible assets, purchased in 2018, consist of domain names. At March 31, 2024, and December 31, 2023, intangible assets were $6.3 million and accumulated amortization was $2.5 million and $2.4 million, respectively. Intangible asset amounts were determined based on the estimated economics of the asset and are amortized over the estimated useful lives on a straight-line basis over 15 years, which approximates the pattern in which the economic benefits are expected to be received.

The Company evaluates the recoverability of intangible assets periodically and considers events or circumstances that may warrant revised estimates of useful lives or that may indicate an impairment. Intangible asset amortization expense for the three months ended March 31, 2024, and March 31, 2023, was $0.1 million and $0.1 million, respectively.

XML

Accrued Expenses and Other Liabilities

3 Months Ended

Mar. 31, 2024

Payables and Accruals [Abstract]

Accrued Expenses and Other Liabilities

8. ACCRUED EXPENSES AND OTHER LIABILITIES

Accrued expenses and other liabilities consist of the following (in thousands):

	March 31, 2024		December 31, 2023
Sales and marketing	$	33,754	$	15,496
Income Taxes		24,104		—
Compensation and benefits		16,719		25,859
Operating lease liabilities		7,629		7,663
Manufacturing costs		3,193		3,382
Other		6,541		4,334
Total accrued expenses and other liabilities	$	91,940	$	56,734

XML

Debt

3 Months Ended

Mar. 31, 2024

Debt Disclosure [Abstract]

Debt

9. DEBT

Revolving Credit Facility

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

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

In conjunction with the First Amendment, on 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 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.

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

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

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

The Company had $223 million in borrowings outstanding under its revolving credit facility and available borrowing capacity of $327 million at March 31, 2024. The weighted average interest rate on the revolving credit facility was 6.22% as of March 31, 2024.

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 as of March 31, 2024. 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.

XML

Leases

3 Months Ended

Mar. 31, 2024

Leases [Abstract]

Leases

10. LEASES

The Company leases manufacturing and training facilities, storage warehouses, office space, and certain plant equipment under various operating leases. The Company’s operating leases have remaining lease terms of 1 year to 5 years. Lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option.

For the three months ended March 31, 2024 and March 31, 2023, total operating lease expense was $2.0 million and $2.1 million, respectively. The weighted average remaining lease term at March 31, 2024 and December 31, 2023 was 4.2 years and 4.4 years, respectively. The weighted average discount rate at March 31, 2024 and December 31, 2023 was 2.38% and 2.32%, respectively.

The following table includes supplemental cash flow information for the three months ended March 31, 2024 and March 31, 2023, and supplemental balance sheet information at March 31, 2024 and December 31, 2023 related to operating leases (in thousands):

	Three Months Ended March 31,
Supplemental cash flow information	2024		2023
Cash paid for amounts included in the measurement of operating lease liabilities	$	2,007	$	2,120
Operating ROU assets obtained in exchange for lease liabilities	$	578	$	1,541

Supplemental balance sheet information	March 31, 2024		December 31, 2023
Operating lease ROU assets	$	25,010	$	26,233
Operating lease liabilities:
Accrued expenses and other current liabilities	$	7,629	$	7,663
Operating lease liabilities		17,602		18,840
Total operating lease liabilities	$	25,231	$	26,503

The following table summarizes maturities of operating lease liabilities at March 31, 2024 (in thousands):

Maturities of operating lease liabilities
2024	$	5,942
2025		5,950
2026		5,051
2027		4,549
2028		3,982
Thereafter		934
Total lease payments		26,408
Less imputed interest		(1,177	)
Total operating lease liabilities	$	25,231

XML

Financial Instruments

3 Months Ended

Mar. 31, 2024

Investments, All Other Investments [Abstract]

Financial Instruments

11. FINANCIAL INSTRUMENTS

The Company considers the recorded value of its financial assets and liabilities, consisting primarily of cash and cash equivalents, accounts receivable, accounts payable, accrued expenses, other current liabilities, and debt to approximate the fair value of the respective assets and liabilities on the Condensed Consolidated Balance Sheets at March 31, 2024 and December 31, 2023.

XML

Stockholders' Equity

3 Months Ended

Mar. 31, 2024

Equity [Abstract]

Stockholders' Equity

12. STOCKHOLDERS’ EQUITY

Earnings Per Share

The following table sets forth the computation of basic and diluted earnings per share (in thousands, except share and per share data):

	Three Months Ended March 31,
	2024		2023
Numerator:
Net income available to common shareholders	$	89,070	$	41,131
Denominator:
Basic weighted average shares outstanding		108,640,168		108,771,958
Effect of dilutive securities:
Stock appreciation rights and options		71,202		70,004
Restricted stock		79,255		74,299
Diluted weighted average shares outstanding		108,790,625		108,916,261
Basic earnings per share	$	0.82	$	0.38
Diluted earnings per share	$	0.82	$	0.38

Diluted earnings per share is computed using the weighted average number of shares determined for the basic earnings per share computation plus the dilutive effect of common stock equivalents using the treasury stock method. The computation of diluted earnings per share excludes the following potentially dilutive securities because the effect would be anti-dilutive:

	Three Months Ended March 31,
	2024			2023
Stock appreciation rights		55,132			108,749
Restricted stock		48,597			107,571

Stock Repurchase Program

On February 16, 2018, the Board of Directors adopted the 2018 Stock Repurchase Program of up to 11.6 million shares of the Company’s outstanding common stock (Stock Repurchase Program). On May 4, 2023, the Trex Board of Directors adopted a new stock repurchase program (2023 Stock Repurchase Program) of up to 10.8 million shares of its outstanding common stock, and terminated the existing Stock Repurchase Program. The 2023 Stock Repurchase Program has no set expiration date. During the three months ended March 31, 2024, Trex did not repurchase any shares of its outstanding common stock under the 2023 Stock Repurchase Program.

XML

Revenue From Contracts With Customers

3 Months Ended

Mar. 31, 2024

Revenue from Contract with Customer [Abstract]

Revenue From Contracts With Customers

13. REVENUE FROM CONTRACTS WITH CUSTOMERS

The Company principally generates revenue from the manufacture and sale of its high-performance, low-maintenance, eco-friendly wood-alternative composite decking and railing products and accessories. Substantially all of its revenues are from contracts with customers, which are purchase orders of short-term duration of less than one year. Its customers, in turn, sell primarily to the residential market, which includes replacement, remodeling and new construction related to outdoor living products. The Company satisfies its performance obligations at a point in time. The shipment

of each product is a separate performance obligation as the customer is able to derive benefit from each product shipped and no performance obligation remains after shipment. Upon shipment of the product, the customer obtains control over the distinct product and Trex satisfies its performance obligation. Any performance obligation that remains unsatisfied at the end of a reporting period is part of a contract that has an original expected duration of one year or less. Any variable consideration related to the unsatisfied performance obligation is allocated wholly to the unsatisfied performance obligation, is 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 Condensed Consolidated Financial Statements. For the three months ended March 31, 2024 and March 31, 2023, the Company’s net sales of $373,635 and $238,718, respectively, were recognized at a point in time upon transfer of its outdoor living products under variable consideration contracts into the building products market.

XML

Stock-Based Compensation

3 Months Ended

Mar. 31, 2024

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock-Based Compensation

14. STOCK-BASED COMPENSATION

At the annual meeting of stockholders of the Company held on May 4, 2023, the Company’s stockholders approved the Trex Company, Inc. 2023 Stock Incentive Plan (Plan). The Company’s board of directors unanimously approved the Plan on April 10, 2023, subject to stockholder approval. The Plan amends and restates in its entirety the Trex Company, Inc. 2014 Stock Incentive Plan (2014 Plan), which was last approved by the Company’s stockholders at the annual meeting held on April 30, 2014. The Plan, which will be administered by the compensation committee of the board of directors, provides for the grant of stock options, restricted stock, restricted stock units, stock appreciation rights and unrestricted stock, which are referred to collectively as “awards.” Awards may be granted under the Plan to officers, directors (including non-employee directors) and other employees of the Company or any subsidiary thereof, to any adviser, consultant, or other provider of services to the Company (and any employee thereof), and to any other individuals who are approved by the board of directors as eligible to participate in the Plan. Only employees of the Company or any subsidiary thereof are eligible to receive incentive stock options. Subject to certain adjustments as provided in the Plan, the total number of shares of common stock available for future grants under the Plan is 4,000,000 shares.

The following table summarizes the Company’s stock-based compensation grants for the three months ended March 31, 2024:

	Stock Awards Granted		Weighted-Average Grant Price Per Share
Time-based restricted stock units		48,628	$	90.86
Performance-based restricted stock units (a)		80,371	$	81.01
Stock appreciation rights		33,277	$	84.72

(a) Includes 55,834 of target performance-based restricted stock unit awards granted during the three months ended March 31, 2024, and adjustments of 25,315, and (778) to grants due to the actual performance level achieved for restricted stock and restricted stock units awarded in 2023 and 2021, respectively.

The fair value of each SAR is estimated on the date of grant using a Black-Scholes option-pricing formula. For SARs issued in the three months ended March 31, 2024 and March 31, 2023, the data and assumptions shown in the following table were used:

	Three Months Ended March 31, 2024			Three Months Ended March 31, 2023
Weighted-average fair value of grants	$	44.83		$	27.19
Dividend yield		0	%		0	%
Average risk-free interest rate		4.3	%		4.0	%
Expected term (years)		5			5
Expected volatility		51.2	%		49.5	%

The Company recognizes stock-based compensation expense ratably over the period from the grant date to the earlier of: (1) the vesting date of the award, or (2) the date the grantee is eligible to retire without forfeiting the award. For performance-based restricted stock and performance-based restricted stock units, expense is recognized ratably over the performance and vesting period of each tranche based on management’s judgment of the ultimate award that is likely to be paid out based on the achievement of the predetermined performance measures. For the employee stock purchase plan, compensation expense is recognized related to the discount on purchases. Stock-based compensation expense is included in “Selling, general and administrative expenses” in the Condensed Consolidated Statements of Comprehensive Income. The following table summarizes the Company’s stock-based compensation expense (in thousands):

	Three Months Ended March 31,
	2024		2023
Stock appreciation rights	$	271	$	215
Time-based restricted stock and restricted stock units		1,074		935
Performance-based restricted stock and restricted stock units		1,642		724
Employee stock purchase plan		166		98
Total stock-based compensation	$	3,153	$	1,972

Total unrecognized compensation cost related to unvested awards as of March 31, 2024 was $23.7 million. The cost of these unvested awards is being recognized over the requisite vesting period of each award.

XML

Income Taxes

3 Months Ended

Mar. 31, 2024

Income Tax Disclosure [Abstract]

Income Taxes

15. INCOME TAXES

The Company’s effective tax rate for the three months ended March 31, 2024 and March 31, 2023, was 25.2%, which resulted in income tax expense of $29.9 million and $13.8 million, respectively.

During the three months ended March 31, 2024 and March 31, 2023, the Company realized $0.6 million and $0.2 million, respectively, of excess tax benefits from stock-based awards and recorded a corresponding benefit to income tax expense.

The Company analyzes its deferred tax assets each reporting period, considering all available positive and negative evidence in determining the expected realization of those deferred tax assets. As of March 31, 2024, the Company maintains a valuation allowance of $3.3 million against deferred tax assets primarily related to state tax credits it estimates will expire before they are realized.

The Company operates in multiple tax jurisdictions, and, in the normal course of business, its tax returns are subject to examination by various taxing authorities. Such examinations may result in future assessments by these taxing authorities, and the Company accrues a liability when it believes that it is more likely than not that benefits of tax positions will not be realized. The Company believes that adequate provisions have been made for all tax returns subject to examination. As of March 31, 2024, for certain tax jurisdictions tax years 2020 through 2023 remain subject to examination. The Company believes that adequate provisions have been made for all tax returns subject to examination. Sales made to foreign distributors are not taxable in any foreign jurisdiction as the Company does not have a taxable presence in any foreign jurisdiction.

XML

Seasonality

3 Months Ended

Mar. 31, 2024

Text Block [Abstract]

Seasonality

16. SEASONALITY

The operating results for Trex 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 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.

XML

Commitments and Contingencies

3 Months Ended

Mar. 31, 2024

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

17. COMMITMENTS AND CONTINGENCIES

Product Warranty

The Company warrants that for the applicable warranty period its products, when properly installed, used and maintained, will be free from material defects in workmanship and materials and its 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. The Company further warrants 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, the Company has 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. The Company further warrants 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, the Company has an obligation either to replace the defective product or refund the purchase price.

The Company maintains a warranty reserve for the settlement of its product warranty claims. The Company accrues for the estimated cost of product warranty claims at the time revenue is recognized based on such factors as historical claims experience and future claims experience. Management reviews and adjusts these estimates, if necessary, based on the differences between actual experience and historical estimates. Additionally, the Company accrues for warranty costs associated with occasional or unanticipated product quality issues if a loss is probable and can be reasonably estimated, as necessary.

The Company continues to receive and settle claims for decking products manufactured at its Nevada facility prior to 2007 that exhibit surface flaking and maintains 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 claims to be settled with payment, the Company utilizes actuarial techniques to determine a reasonable possible range 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 to determine its best estimate of future claims for which to record a related liability. 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.

The Company monitors surface flaking claims activity each quarter for indications that its 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 the Company’s 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 three months ended March 31, 2024, was lower than the number of claims received in the three months ended March 31, 2023, and lower than the Company’s expectations for 2024. Average cost per claim experienced in the three months ended March 31, 2024, was lower than that experienced in the three months ended March 31, 2023 and lower than the Company’s expectations for 2024. The Company believes the reserve at March 31, 2024 is sufficient to cover future surface flaking obligations.

The Company’s 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 the Company’s financial condition, results of operations or cash flows. The Company estimates 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. The Company estimates 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 $1.0 million change in the surface flaking warranty reserve.

The following is a reconciliation of the Company’s product warranty reserve (in thousands):

	Three Months Ended March 31, 2024
	Product Warranty			Surface Flaking			Total
Beginning balance, January 1	$	12,066		$	10,112		$	22,178
Provisions and changes in estimates		2,068			—			2,068
Settlements made during the period		(924	)		(188	)		(1,112	)
Ending balance, March 31	$	13,210		$	9,924		$	23,134

	Three Months Ended March 31, 2023
	Product Warranty			Surface Flaking			Total
Beginning balance, January 1	$	9,694		$	15,905		$	25,599
Provisions and changes in estimates		1,945			—			1,945
Settlements made during the period		(551	)		(316	)		(867	)
Ending balance, March 31	$	11,088		$	15,589		$	26,677

Legal Matters

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.

Arkansas Facility

In October 2021, the Company announced plans to add a third U.S.-based manufacturing facility located in Little Rock, Arkansas, on approximately 300 acres of land. The development approach and related expenditures for the new campus will be modular and calibrated to demand trends for the Company’s outdoor living products. Construction began on the new facility in the second quarter of 2022, and in July 2022, the Company entered into a design-build agreement. Construction for the new facility will be funded primarily through the Company’s ongoing cash generation or its line of credit.

XML

Inventories (Tables)

3 Months Ended

Mar. 31, 2024

Inventory Disclosure [Abstract]

Summary of Inventories

Inventories valued at LIFO (last-in, first-out), consist of the following (in thousands):

	March 31, 2024			December 31, 2023
Finished goods	$	89,619		$	88,840
Raw materials		67,705			51,688
Total FIFO (first-in, first-out) inventories		157,324			140,528
Reserve to adjust inventories to LIFO value		(33,439	)		(33,439	)
Total LIFO inventories	$	123,885		$	107,089

XML

Prepaid Expenses and Other Assets (Tables)

3 Months Ended

Mar. 31, 2024

Text Block [Abstract]

Summary of Prepaid Expenses and Other Assets

Prepaid expenses and other assets consist of the following (in thousands):

	March 31, 2024		December 31, 2023
Prepaid expenses	$	12,329	$	11,830
Income tax receivable		—		9,611
Other		629		629
Total prepaid expenses and other assets	$	12,958	$	22,070

XML

Accrued Expenses and Other Liabilities (Tables)

3 Months Ended

Mar. 31, 2024

Payables and Accruals [Abstract]

Summary of Accrued Expenses and Other Liabilities

Accrued expenses and other liabilities consist of the following (in thousands):

	March 31, 2024		December 31, 2023
Sales and marketing	$	33,754	$	15,496
Income Taxes		24,104		—
Compensation and benefits		16,719		25,859
Operating lease liabilities		7,629		7,663
Manufacturing costs		3,193		3,382
Other		6,541		4,334
Total accrued expenses and other liabilities	$	91,940	$	56,734

XML

Leases (Tables)

3 Months Ended

Mar. 31, 2024

Leases [Abstract]

Supplemental Cash Flow information and Supplemental balance sheet information related to operating leases to operating leases

The following table includes supplemental cash flow information for the three months ended March 31, 2024 and March 31, 2023, and supplemental balance sheet information at March 31, 2024 and December 31, 2023 related to operating leases (in thousands):

	Three Months Ended March 31,
Supplemental cash flow information	2024		2023
Cash paid for amounts included in the measurement of operating lease liabilities	$	2,007	$	2,120
Operating ROU assets obtained in exchange for lease liabilities	$	578	$	1,541

Supplemental balance sheet information	March 31, 2024		December 31, 2023
Operating lease ROU assets	$	25,010	$	26,233
Operating lease liabilities:
Accrued expenses and other current liabilities	$	7,629	$	7,663
Operating lease liabilities		17,602		18,840
Total operating lease liabilities	$	25,231	$	26,503

Maturities of operating lease liabilities

The following table summarizes maturities of operating lease liabilities at March 31, 2024 (in thousands):

Maturities of operating lease liabilities
2024	$	5,942
2025		5,950
2026		5,051
2027		4,549
2028		3,982
Thereafter		934
Total lease payments		26,408
Less imputed interest		(1,177	)
Total operating lease liabilities	$	25,231

XML

Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2024

Equity [Abstract]

Computation of Basic and Diluted Earnings Per Share

The following table sets forth the computation of basic and diluted earnings per share (in thousands, except share and per share data):

	Three Months Ended March 31,
	2024		2023
Numerator:
Net income available to common shareholders	$	89,070	$	41,131
Denominator:
Basic weighted average shares outstanding		108,640,168		108,771,958
Effect of dilutive securities:
Stock appreciation rights and options		71,202		70,004
Restricted stock		79,255		74,299
Diluted weighted average shares outstanding		108,790,625		108,916,261
Basic earnings per share	$	0.82	$	0.38
Diluted earnings per share	$	0.82	$	0.38

Antidilutive Securities Excluded from Computation of Earnings Per Share

The computation of diluted earnings per share excludes the following potentially dilutive securities because the effect would be anti-dilutive:

	Three Months Ended March 31,
	2024			2023
Stock appreciation rights		55,132			108,749
Restricted stock		48,597			107,571

XML

Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2024

Summary of Stock-Based Compensation Expense

The following table summarizes the Company’s stock-based compensation expense (in thousands):

	Three Months Ended March 31,
	2024		2023
Stock appreciation rights	$	271	$	215
Time-based restricted stock and restricted stock units		1,074		935
Performance-based restricted stock and restricted stock units		1,642		724
Employee stock purchase plan		166		98
Total stock-based compensation	$	3,153	$	1,972

Summary of Assumptions Used to Estimate Fair Value of Each SAR

The fair value of each SAR is estimated on the date of grant using a Black-Scholes option-pricing formula. For SARs issued in the three months ended March 31, 2024 and March 31, 2023, the data and assumptions shown in the following table were used:

	Three Months Ended March 31, 2024			Three Months Ended March 31, 2023
Weighted-average fair value of grants	$	44.83		$	27.19
Dividend yield		0	%		0	%
Average risk-free interest rate		4.3	%		4.0	%
Expected term (years)		5			5
Expected volatility		51.2	%		49.5	%

Summary of Stock-Based Compensation Grants

The following table summarizes the Company’s stock-based compensation grants for the three months ended March 31, 2024:

	Stock Awards Granted		Weighted-Average Grant Price Per Share
Time-based restricted stock units		48,628	$	90.86
Performance-based restricted stock units (a)		80,371	$	81.01
Stock appreciation rights		33,277	$	84.72

(a) Includes 55,834 of target performance-based restricted stock unit awards granted during the three months ended March 31, 2024, and adjustments of 25,315, and (778) to grants due to the actual performance level achieved for restricted stock and restricted stock units awarded in 2023 and 2021, respectively.

XML

Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2024

Commitments and Contingencies Disclosure [Abstract]

Summary of Reconciliation of Company's Residential Product Warranty Reserve

The following is a reconciliation of the Company’s product warranty reserve (in thousands):

	Three Months Ended March 31, 2024
	Product Warranty			Surface Flaking			Total
Beginning balance, January 1	$	12,066		$	10,112		$	22,178
Provisions and changes in estimates		2,068			—			2,068
Settlements made during the period		(924	)		(188	)		(1,112	)
Ending balance, March 31	$	13,210		$	9,924		$	23,134

	Three Months Ended March 31, 2023
	Product Warranty			Surface Flaking			Total
Beginning balance, January 1	$	9,694		$	15,905		$	25,599
Provisions and changes in estimates		1,945			—			1,945
Settlements made during the period		(551	)		(316	)		(867	)
Ending balance, March 31	$	11,088		$	15,589		$	26,677

XML

Business and Organization - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2024 Segment
Accounting Policies [Abstract]
Number of reportable segments	1

XML

Inventories - Summary of Inventories (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Inventory Disclosure [Abstract]
Finished goods	$ 89,619	$ 88,840
Raw materials	67,705	51,688
Total FIFO (first-in, first-out) inventories	157,324	140,528
Reserve to adjust inventories to LIFO value	(33,439)	(33,439)
Total LIFO inventories	$ 123,885	$ 107,089

XML

Prepaid Expenses and Other Assets - Summary of Prepaid Expenses and Other Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Prepaid Expense and Other Assets [Abstract]
Prepaid expenses	$ 12,329	$ 11,830
Income tax receivable	0	9,611
Other	629	629
Total prepaid expenses and other assets	$ 12,958	$ 22,070

XML

Goodwill and Other Intangible Assets, Net - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Goodwill [Line Items]
Amortization of intangible asset	$ 0.1	$ 0.1
Intangible Assets	6.3		$ 6.3
Accumulated Amortization	2.5		2.4
Residential [Member]
Goodwill [Line Items]
Goodwill	$ 14.2		$ 14.2
Domain Names [Member]
Goodwill [Line Items]
Amortization period	15 years

XML

Accrued Expenses and Other Liabilities - Summary of Accrued Expenses and Other Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Payables and Accruals [Abstract]
Sales and marketing	$ 33,754	$ 15,496
Income Taxes	24,104	0
Compensation and benefits	16,719	25,859
Operating lease liabilities	7,629	7,663
Manufacturing costs	3,193	3,382
Other	6,541	4,334
Total accrued expenses and other liabilities	$ 91,940	$ 56,734
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Total accrued expenses and other liabilities	Total accrued expenses and other liabilities

XML

Debt - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	May 18, 2022
Line of Credit Facility [Line Items]
Remaining available borrowing capacity	$ 327,000,000
Outstanding borrowing capacity	$ 223,000,000	$ 5,500,000
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Debt, Weighted Average Interest Rate	6.22%
Revolving Credit Facility [Member] | Fifth Amendment And Restated Agreement [Member]
Line of Credit Facility [Line Items]
Revolving loans in a collective maximum principal amount			$ 400,000,000
Termination date of the Credit Agreement	May 18, 2027
Revolving Credit Facility [Member] | Fifth Amendment And Restated Agreement [Member] | Letter of Credit [Member]
Line of Credit Facility [Line Items]
Revolving loans in a collective maximum principal amount			60,000,000
Revolving Credit Facility [Member] | Fifth Amendment And Restated Agreement [Member] | Swingline Letter Of Credit [Member]
Line of Credit Facility [Line Items]
Revolving loans in a collective maximum principal amount			$ 20,000,000
Revolving Credit Facility [Member] | Base Rate [Member] | Fifth Amendment And Restated Agreement [Member]
Line of Credit Facility [Line Items]
Interest rate	0.50%
Debt instrument, description of variable rate basis	the Federal Funds Rate plus 0.50%
Revolving Credit Facility [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Fifth Amendment And Restated Agreement [Member]
Line of Credit Facility [Line Items]
Interest rate	1.00%
Debt instrument, description of variable rate basis	the Term SOFR plus 1.0%
Revolving B Loan [Member]
Line of Credit Facility [Line Items]
Long-Term Line of Credit	$ 150,000,000
Revolving B Loan [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Debt instrument, Interest rate, Stated percentage	2.15%
Revolving B Loan [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Debt instrument, Interest rate, Stated percentage	1.20%
Revolving B Loan [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Interest rate	1.15%
Revolving B Loan [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Interest rate	0.20%

XML

Leases - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Weighted average discount rate	2.38%		2.32%
Operating lease cost	$ 2.0	$ 2.1
Weighted average remaining lease term	4 years 2 months 12 days		4 years 4 months 24 days
Minimum [Member]
Operating Lease terms	1 year
Maximum [Member]
Operating Lease terms	5 years

XML

Leases - Supplemental Cash flow Information to operating leases (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Supplemental cash flow information
Cash paid for amounts included in the measurement of operating lease liabilities	$ 2,007	$ 2,120
Operating ROU assets obtained in exchange for lease liabilities	578	$ 1,541
Supplemental balance sheet information
Operating lease ROU assets	25,010		$ 26,233
Operating lease liabilities:
Accrued expenses and other current liabilities	7,629		7,663
Operating lease liabilities	17,602		18,840
Total operating lease liabilities	$ 25,231		$ 26,503

XML

Leases - Maturities of Operating Lease Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Operating Lease Liabilities, Payments Due [Abstract]
2024	$ 5,942
2025	5,950
2026	5,051
2027	4,549
2028	3,982
Thereafter	934
Total lease payments	26,408
Less imputed interest	(1,177)
Total operating lease liabilities	$ 25,231	$ 26,503

XML

Stockholders' Equity - Additional Information (Detail) - shares		3 Months Ended
	May 04, 2023	Mar. 31, 2024	Feb. 16, 2018
2018 Stock Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Common stock repurchase program, authorized shares			11,600,000
2023 Stock Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Number of shares repurchased by the Company	10,800,000
Stock repurchased during period, shares		0

XML

Stockholders' Equity - Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Numerator:
Net income available to common shareholders	$ 89,070	$ 41,131
Denominator:
Basic weighted average shares outstanding	108,640,168	108,771,958
Effect of dilutive securities:
Diluted weighted average shares outstanding	108,790,625	108,916,261
Basic earnings per share	$ 0.82	$ 0.38
Diluted earnings per share	$ 0.82	$ 0.38
Stock appreciation rights [Member]
Effect of dilutive securities:
Dilutive securities	71,202	70,004
Restricted stock [Member]
Effect of dilutive securities:
Dilutive securities	79,255	74,299

XML

Stockholders' Equity - Antidilutive Securities Excluded from Computation of Earnings Per Share (Detail) - shares	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Restricted stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from the computation of diluted earnings per share	48,597	107,571
Stock appreciation rights [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from the computation of diluted earnings per share	55,132	108,749

XML

Revenue From Contracts With Customers - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenue from Contract with Customer [Abstract]
Net sales	$ 373,635	$ 238,718

XML

Stock-Based Compensation - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to unvested awards	$ 23.7
2014 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total aggregate number of shares of common stock that may be issued	4,000,000
Performance-Based Restricted Stock and Performance-Based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares or rights issued	55,834
Stock Appreciation Rights [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value assumptions method used	Black-Scholes option-pricing formula
Number of shares or rights issued	33,277
Performance Based Restricted Stock Adjustment [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares or rights issued		25,315	(778)

XML

Stock-Based Compensation - Summary of Stock-Based Compensation Expenses (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 3,153	$ 1,972
Stock Appreciation Rights [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	271	215
Time-Based Restricted Stock and Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	1,074	935
Performance-Based Restricted Stock and Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	1,642	724
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 166	$ 98

XML

Stock-Based Compensation - Summary of Assumptions Used to Estimate Fair Value of Each SAR (Detail) - Stock Appreciation Rights [Member] - $ / shares	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Share Based Compensation Arrangement by Share Based Payment Award Fair Value Assumptions and Methodology [Line Items]
Weighted-average fair value of grants	$ 44.83	$ 27.19
Dividend yield	0.00%	0.00%
Average risk-free interest rate	4.30%	4.00%
Expected term (years)	5 years	5 years
Expected volatility	51.20%	49.50%

XML

Stock-Based Compensation - Summary of Stock-Based Compensation Grants (Detail)	3 Months Ended
	Mar. 31, 2024 $ / shares shares
Time Based Restricted Stock Units [Member]
Stock Awards Granted | shares	48,628
Weighted-Average Grant Price Per Share | $ / shares	$ 90.86
Performance Based Restricted Stock Units [Member]
Stock Awards Granted | shares	80,371
Weighted-Average Grant Price Per Share | $ / shares	$ 81.01
Stock Appreciation Rights [Member]
Stock Awards Granted | shares	33,277
Weighted-Average Grant Price Per Share | $ / shares	$ 84.72

XML

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Tax Contingency [Line Items]
Valuation allowance	$ 3,300
Income tax expense (benefit)	$ 29,947	$ 13,832
Effective tax rate	25.20%	25.20%
Excess tax benefits from stock based awards	$ 600	$ 200
Earliest Tax Year [Member] | Federal Tax Jurisdiction [Member]
Income Tax Contingency [Line Items]
Tax years subject to examination	2020
Latest Tax Year [Member] | Federal Tax Jurisdiction [Member]
Income Tax Contingency [Line Items]
Tax years subject to examination	2023

XML

Commitments and Contingencies - Additional Information (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($)	Oct. 26, 2021 a
Schedule Of Commitments And Contingencies [Line Items]
Change in warranty reserve for disclosure purposes only | $	$ 1.0
Area of Land | a		300
Surface Flaking Warranty Reserve [Member]
Schedule Of Commitments And Contingencies [Line Items]
Percentage change in warranty claims used as a threshold for disclosure	10.00%
Residential Use [Member] | Products Sold Prior to January One, Two Thousand and Twenty Three [Member]
Schedule Of Commitments And Contingencies [Line Items]
Warranty period	25 years
Commercial Use [Member]
Schedule Of Commitments And Contingencies [Line Items]
Warranty period	10 years
Commercial Use [Member] | Products Sold Prior to January One, Two Thousand and Twenty Three [Member]
Schedule Of Commitments And Contingencies [Line Items]
Warranty period	10 years
Signature Railing And Transcend Cladding [Member] | Commercial Use [Member]
Schedule Of Commitments And Contingencies [Line Items]
Warranty period	25 years
Transcend Decking [Member] | Residential Use [Member] | Products Sold on or After January One, Two Thousand and Twenty Three [Member]
Schedule Of Commitments And Contingencies [Line Items]
Warranty period	50 years
Select Decking And Universal Fascia [Member] | Residential Use [Member] | Products Sold on or After January One, Two Thousand and Twenty Three [Member]
Schedule Of Commitments And Contingencies [Line Items]
Warranty period	35 years
Enhance Decking And Transcend, Select, Enhance And Signature Railing [Member] | Residential Use [Member] | Products Sold on or After January One, Two Thousand and Twenty Three [Member]
Schedule Of Commitments And Contingencies [Line Items]
Warranty period	25 years
Signature Railing [Member] | Residential and Commercial Use [Member] | Products Sold Prior to January One, Two Thousand and Twenty Three [Member]
Schedule Of Commitments And Contingencies [Line Items]
Warranty period	25 years

XML

Commitments and Contingencies - Summary of Reconciliation of Company's Residential Product Warranty Reserve (Detail) - Surface Flaking Warranty Reserve [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Product Warranty Liability [Line Items]
Beginning balance	$ 22,178	$ 25,599
Provisions and changes in estimates	2,068	1,945
Settlements made during the period	(1,112)	(867)
Ending balance	23,134	26,677
Product Warranty [Member]
Product Warranty Liability [Line Items]
Beginning balance	12,066	9,694
Provisions and changes in estimates	2,068	1,945
Settlements made during the period	(924)	(551)
Ending balance	13,210	11,088
Surface Flaking [Member]
Product Warranty Liability [Line Items]
Beginning balance	10,112	15,905
Provisions and changes in estimates	0	0
Settlements made during the period	(188)	(316)
Ending balance	$ 9,924	$ 15,589