Trex (TREX) SVP reports share grant, performance adjustment and tax withholding

Rhea-AI Filing Summary

Trex Company senior vice president Amy M. Fernandez reported multiple equity-related transactions in company common stock. She received a grant or award of 1,910 shares at $41.42 per share, increasing her directly owned holdings to 74,423 shares immediately after that award.

On the same date, an additional 1,083-share adjustment was recorded as another acquisition or disposition categorized as an “other” transaction, reflecting performance-based share vesting outcomes. Separately, 4,496 shares were disposed of at $41.42 per share to satisfy tax obligations by delivering shares, leaving her with 68,844 directly owned shares.

Insider Trade Summary

3 transactions reported

Mixed 3 txns

Insider Fernandez Amy M.

Role SVP, CLO and Secretary

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	1,910	$41.42	$79K
Other	Common Stock	1,083	$41.42	$45K
Tax Withholding	Common Stock	4,496	$41.42	$186K

Holdings After Transaction: Common Stock — 74,423 shares (Direct)

Footnotes (1)

1. Represents net share difference between target performance-based shares and actual vested shares, based upon actual performance of the Company. Represents the target number of performance-based restricted units which did not vest due to the performance condition not being satisfied. 4.496 shares are being surrendered as allowed by the Company's 2023 Stock Incentive Plan to cover payment of taxes currently due on previously granted restricted stock units.

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
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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^*

Fernandez Amy M.

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP, CLO and Secretary

3. Date of Earliest Transaction (Month/Day/Year)
03/01/2026

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	03/01/2026		A(1)		1,910	A	$41.42	74,423	D
Common Stock	03/01/2026		J(2)		1,083	D	$41.42	73,340	D
Common Stock	03/01/2026		F(3)		4,496	D	$41.42	68,844	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. Represents net share difference between target performance-based shares and actual vested shares, based upon actual performance of the Company.

2. Represents the target number of performance-based restricted units which did not vest due to the performance condition not being satisfied.

3. 4.496 shares are being surrendered as allowed by the Company's 2023 Stock Incentive Plan to cover payment of taxes currently due on previously granted restricted stock units.

	/s/ Amy M. Fernandez	03/03/2026
	** 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 transactions did Trex (TREX) executive Amy M. Fernandez report?

Amy M. Fernandez reported three common stock transactions: a 1,910-share grant, a 1,083-share performance-related adjustment, and a 4,496-share disposition used to pay tax obligations, all at a reported price of $41.42 per share.

Did Trex (TREX) executive Amy M. Fernandez buy or sell shares on the open market?

The reported transactions involve an equity grant, a performance-related adjustment, and a tax-withholding disposition. The filing categorizes them as grant or award acquisition, other transaction, and tax payment by delivering shares, rather than as open-market purchases or sales.

How many Trex (TREX) shares does Amy M. Fernandez own after these Form 4 transactions?

After the reported grant, adjustment, and tax-withholding disposition, Amy M. Fernandez directly owns 68,844 shares of Trex common stock, according to the post-transaction ownership figure disclosed in the Form 4 data.

What was the price used for Amy M. Fernandez’s Trex (TREX) Form 4 transactions?

Each of the reported Trex common stock transactions for Amy M. Fernandez used a transaction price of $41.42 per share, covering the 1,910-share grant, the 1,083-share performance-related adjustment, and the 4,496-share tax-withholding share disposition.

What does the tax-withholding disposition in the Trex (TREX) Form 4 represent?

The 4,496-share disposition is labeled as payment of tax liability by delivering securities. It reflects shares surrendered, rather than a standard market sale, to cover taxes currently due on previously granted restricted stock units under Trex’s 2023 Stock Incentive Plan.

How does the performance-based adjustment affect Trex (TREX) shares reported by Amy M. Fernandez?

The filing notes performance-based activity, including a 1,083-share transaction categorized as an “other” acquisition or disposition and footnotes referencing differences between target and actual performance-based shares, tied to the company’s achievement of specified performance conditions.