Director Andrew Rose receives 526-share Trex (TREX) equity grant at $48.69

Rhea-AI Filing Summary

Trex Company director Andrew B. Rose received an equity award of 526 shares of Common Stock as a grant. The award was valued at $48.69 per share on the grant date and is structured as a restricted stock unit award that will vest on the first anniversary of the grant. Following this compensation-related acquisition, Rose directly holds 15,409 shares of Trex common stock.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider ROSE B ANDREW

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	526	$48.69	$26K

Holdings After Transaction: Common Stock — 15,409 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Equity award size: 526 shares Grant-date value per share: $48.69 per share Shares held after award: 15,409 shares

3 metrics

Equity award size 526 shares Grant of Common Stock reported on Form 4

Grant-date value per share $48.69 per share Value used for the 526-share award

Shares held after award 15,409 shares Total direct Trex holdings after the transaction

Key Terms

restricted stock unit award, Common Stock, grant, award, or other acquisition

3 terms

restricted stock unit award financial

"This restricted stock unit award will vest on the first anniversary"

A restricted stock unit award is a promise by a company to give an employee a specified number of company shares at a future date if certain conditions are met, such as staying with the company or hitting performance goals. For investors, these awards matter because they can increase the total number of shares outstanding when converted, diluting existing holders, and they align employees’ incentives with shareholders’ interests much like giving a rising bonus that becomes real only after conditions are satisfied.

Common Stock financial

"security_title": "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

grant, award, or other acquisition financial

"transaction_code_description": "Grant, award, or other acquisition""

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 07/06/2026 - 04:27 PM Accepted by SEC EDGAR 07/06/2026 - 04:26 PM Learn about SEC filing dates

FAQ

What insider transaction did Trex (TREX) director Andrew B. Rose report?

Andrew B. Rose reported receiving a grant of 526 shares of Trex Common Stock. This was a compensation-related equity award rather than an open-market purchase or sale, and it increased his direct holdings in the company.

At what price was the Trex (TREX) equity award to Andrew B. Rose valued?

The 526-share award to Andrew B. Rose was valued at $48.69 per share. This price reflects the grant-date value used for the restricted stock unit award reported in the Form 4 filing.

When will Andrew B. Rose’s Trex (TREX) restricted stock unit award vest?

The restricted stock unit award to Andrew B. Rose will vest on the first anniversary of the grant. Vesting means the shares become fully earned and no longer subject to forfeiture conditions after that date.

How many Trex (TREX) shares does Andrew B. Rose hold after this transaction?

After receiving the 526-share equity grant, Andrew B. Rose directly holds 15,409 shares of Trex Common Stock. This total reflects his ownership immediately following the reported compensation-related award.

Was the Trex (TREX) transaction by Andrew B. Rose a market purchase or sale?

The transaction was not a market purchase or sale. It was reported as a grant or award acquisition of 526 shares, consistent with a restricted stock unit equity compensation award to the director.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

ROSE B ANDREW

(Last) (First) (Middle)

C/O TREX COMPANY, INC.

2500 TREX WAY

(Street)

WINCHESTER VIRGINIA 22601

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
TREX CO INC [ TREX ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/01/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	07/01/2026		A(1)		526	A	$48.69	15,409	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. This restricted stock unit award will vest on the first anniversary of the grant.

	/s/ Amy M. Fernandez by power of attorney	07/06/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)