Trex (TREX) director discloses RSU award of 225 shares in Form 4

Rhea-AI Filing Summary

Trex Company, Inc. director reported receiving a new equity award in the form of restricted stock units. On 01/02/2026, the director acquired 225 shares of Trex common stock at a price of $35.83 per share, increasing the director’s holdings to 1,803 shares held directly after the transaction. The filing notes that this restricted stock unit award will vest on the first anniversary of the grant, meaning the shares become fully owned by the director after one year, subject to the award’s terms.

Insider Trade Summary

Net Buyer: 225 shares

Net Buy 1 txn

Insider ROSE B ANDREW

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	225	$35.83	$8K

Holdings After Transaction: Common Stock — 1,803 shares (Direct)

Footnotes (1)

1. F1. This restricted stock unit award will vest on the first anniversary of the grant.

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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 01/05/2026 - 06:21 PM Learn about SEC filing dates

FAQ

What insider transaction did TREX director report in this Form 4?

The director reported acquiring 225 shares of Trex Company, Inc. common stock on 01/02/2026 through a restricted stock unit award.

At what price were the Trex (TREX) shares acquired by the director?

The reported acquisition price for the 225 shares of Trex common stock was $35.83 per share.

How many Trex (TREX) shares does the director own after this transaction?

Following the reported transaction, the director beneficially owns 1,803 shares of Trex common stock in direct ownership.

What is the vesting schedule for the Trex (TREX) restricted stock unit award?

The filing states that this restricted stock unit award will vest on the first anniversary of the grant date.

What is the reporting person’s relationship to Trex Company, Inc. (TREX)?

The reporting person is identified as a director of Trex Company, Inc. in the ownership section.

Is this Trex (TREX) Form 4 filed by one or multiple reporting persons?

The document indicates it is a Form filed by one reporting person, not a joint filing.

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 VA 22601

(City) (State) (Zip)

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)

3. Date of Earliest Transaction (Month/Day/Year)
01/02/2026

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

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

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

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	01/02/2026		A(1)		225	A	$35.83	1,803	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	01/05/2026
	** 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.