Equity grant gives TREX (TREX) director Irene Tasi 1,256 new shares

Rhea-AI Filing Summary

TREX CO INC director Irene Tasi reported an equity grant rather than an open-market trade. On the reported date, she acquired 1,256 shares of common stock through a restricted stock unit award at a reference price of $43.79 per share. Following this award, her directly owned stake is 1,256 shares. The award is scheduled to vest on the first anniversary of the grant, meaning she must remain eligible through that date before the shares fully vest.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Tasi Irene

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	1,256	$43.79	$55K

Holdings After Transaction: Common Stock — 1,256 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

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^*

Tasi Irene

(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)
02/09/2026

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	02/09/2026		A(1)		1,256	A	$43.79	1,256	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	02/25/2026
	** 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.

FAQ

What insider transaction did TREX (TREX) director Irene Tasi report?

Irene Tasi reported receiving an equity award, not buying shares on the market. She acquired 1,256 shares of TREX common stock through a restricted stock unit grant at a reference price of $43.79 per share, increasing her direct holdings to 1,256 shares.

How many TREX (TREX) shares were granted to Irene Tasi in this Form 4?

The filing shows an award of 1,256 TREX common shares to director Irene Tasi. These were received via a restricted stock unit grant, with a reference price of $43.79 per share, bringing her total directly owned shares to 1,256 after the reported transaction.

Was the TREX (TREX) Form 4 transaction a market purchase or an award?

The transaction was an award, not an open-market purchase. The Form 4 classifies it under code A as a grant, award, or other acquisition, reflecting a restricted stock unit grant rather than a voluntary buy of TREX shares in the market.

When do Irene Tasi’s new TREX (TREX) restricted stock units vest?

The restricted stock unit award vests on the first anniversary of the grant. Until that one-year mark is reached, the award remains unvested, and full ownership of the underlying 1,256 TREX shares depends on satisfying the time-based vesting condition.

How did this Form 4 change Irene Tasi’s ownership in TREX (TREX)?

After the reported award, Irene Tasi directly owns 1,256 TREX common shares. All of these shares relate to the newly granted restricted stock unit award, and the filing lists her ownership type as direct following completion of the grant transaction.

What does transaction code A mean in the TREX (TREX) Form 4?

Transaction code A signifies a grant, award, or other acquisition of securities. In this TREX filing, it identifies the 1,256-share restricted stock unit grant to director Irene Tasi, distinguishing it from typical open-market purchases or sales of common stock.