[Form 4] Trex Company, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Trex Company (TREX) Form 4: Director Jay M. Gratz reported the acquisition of 1,812 shares of common stock on 07/30/2025, coded “A” (acquisition). The shares represent a restricted stock unit (RSU) grant that vests in full one year after the grant date. A reference price of $66.23 implies an award value of roughly $120 k. After the award, Gratz’s direct beneficial ownership increases to 30,874 shares.

No dispositions, derivative security trades, or Rule 10b5-1 transactions were disclosed. The filing was signed on 07/31/2025.

• Shares acquired: 1,812 (RSU)
• Post-transaction holdings: 30,874
• Implied award value: ≈ $120 k

The grant modestly enhances insider alignment but does not constitute an open-market purchase and is unlikely to be material to TREX’s valuation.

Insights

Equity Analyst

TL;DR: Small RSU grant raises director’s stake; signals alignment but negligible valuation impact.

The 1,812-share RSU award (~$120 k) represents about 6% of Gratz’s prior stake and less than 0.03% of TREX’s outstanding shares. Because the shares were granted rather than purchased, the transaction is more compensation-related than a market vote of confidence. Still, the absence of sales and a higher insider holding slightly improve shareholder alignment. From a valuation perspective, the award is immaterial and should not affect earnings or share count meaningfully.

Corporate Governance Specialist

TL;DR: Routine director equity grant; governance-friendly, financially minor.

The annual RSU grant follows typical board compensation practice and vests over one year, encouraging retention and alignment. There are no red flags such as accelerated vesting or derivative hedging. Filing timeliness (within two business days) meets Section 16 requirements. Overall, governance impact is positive but not material to investors.

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^*

GRATZ JAY 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)

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

3. Date of Earliest Transaction (Month/Day/Year)
07/30/2025

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	07/30/2025		A(1)		1,812	A	$66.23	30,874	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	07/31/2025
	** 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

How many TREX shares did Jay M. Gratz acquire on 07/30/2025?

He acquired 1,812 shares through a restricted stock unit grant.

What is Gratz’s total TREX shareholding after the transaction?

His direct beneficial ownership increased to 30,874 shares.

Was the acquisition an open-market purchase?

No. It was an RSU award that will vest after one year.

What is the implied dollar value of the RSU award?

Using the reference price of $66.23, the award is worth roughly $120,000.

Did the Form 4 report any derivative security transactions?

No derivative securities were acquired or disposed of in this filing.