Director Kristine Juster (NYSE: TREX) receives 2,831 stock unit award

Q: What insider transaction did TREX director Kristine L. Juster report?

Kristine L. Juster reported receiving an equity award of 2,831 shares of Trex Common Stock on 2026-07-29 at $42.39 per share . The award is structured as a restricted stock unit grant that will vest on the first anniversary of the grant.

Q: How many TREX shares does Kristine L. Juster own after this Form 4 transaction?

After the reported award, Kristine L. Juster directly owns 15,729 shares of Trex Common Stock. This total reflects adding the 2,831-share restricted stock unit grant reported in the transaction to her prior direct holdings.

Q: What type of security did Kristine L. Juster receive in the TREX Form 4 filing?

Kristine L. Juster received an award tied to Common Stock , described in a footnote as a restricted stock unit award . These restricted stock units will vest on the first anniversary of the grant, then settle in Trex Common Stock.

Q: Was Kristine L. Juster’s TREX insider transaction under a Rule 10b5-1 plan?

No. The Form 4’s Rule 10b5-1 checkbox was not marked, indicating the transaction was not reported as made under a pre-arranged Rule 10b5-1 trading plan, based on the filing’s structured data field for that status.

Filing Impact

(Moderate)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

JUSTER KRISTINE L reported acquisition or exercise transactions in this Form 4 filing.

Trex Company director Kristine L. Juster reported an equity award of 2,831 shares of Common Stock on 2026-07-29, recorded at $42.39 per share. The award is a restricted stock unit grant that vests on the first anniversary of the grant, increasing her direct holdings to 15,729 shares.

Insider Trade Summary

Net Buyer: 2,831 shares

Net Buy 1 txn

Insider JUSTER KRISTINE L

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock ^F1	2,831	$42.39	$120K

Holdings After Transaction: Common Stock — 15,729 shares (Direct)

Footnotes (1)

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

Key Figures

Equity award shares: 2,831 shares Award price per share: $42.39 Shares owned after award: 15,729 shares

3 metrics

Equity award shares 2,831 shares Grant, award, or other acquisition on 2026-07-29

Award price per share $42.39 Recorded transaction price per share for the equity award

Shares owned after award 15,729 shares Total direct Common Stock holdings following the transaction

Key Terms

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

3 terms

restricted stock unit award financial

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

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.

Grant, award, or other acquisition financial

"Transaction code A is described as Grant, award, or other acquisition."

Common Stock financial

"The reported security title for the transaction is 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.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 07/30/2026 - 07:39 PM Accepted by SEC EDGAR 07/30/2026 - 07:38 PM

FAQ

What insider transaction did TREX director Kristine L. Juster report?

Kristine L. Juster reported receiving an equity award of 2,831 shares of Trex Common Stock on 2026-07-29 at $42.39 per share. The award is structured as a restricted stock unit grant that will vest on the first anniversary of the grant.

How many TREX shares does Kristine L. Juster own after this Form 4 transaction?

After the reported award, Kristine L. Juster directly owns 15,729 shares of Trex Common Stock. This total reflects adding the 2,831-share restricted stock unit grant reported in the transaction to her prior direct holdings.

What was the reported price for Kristine L. Juster’s TREX equity award?

The reported transaction price for Kristine L. Juster’s equity award was $42.39 per share. This price represents the grant-date value used for the 2,831-share award of Trex Common Stock underlying the restricted stock units.

What type of security did Kristine L. Juster receive in the TREX Form 4 filing?

Kristine L. Juster received an award tied to Common Stock, described in a footnote as a restricted stock unit award. These restricted stock units will vest on the first anniversary of the grant, then settle in Trex Common Stock.

When will Kristine L. Juster’s TREX restricted stock unit award vest?

The restricted stock unit award reported by Kristine L. Juster will vest on the first anniversary of the grant. Vesting means the 2,831 stock units convert into Trex Common Stock that she fully owns, subject to any company-specific plan terms.

Was Kristine L. Juster’s TREX insider transaction under a Rule 10b5-1 plan?

No. The Form 4’s Rule 10b5-1 checkbox was not marked, indicating the transaction was not reported as made under a pre-arranged Rule 10b5-1 trading plan, based on the filing’s structured data field for that status.

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^*

JUSTER KRISTINE L

(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)
07/29/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	07/29/2026		A⁽¹⁾		2,831	A	$42.39	15,729	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

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	07/30/2026
	** 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)

Source: View Original Filing on SEC EDGAR