Trex Co Inc (NYSE: TREX) grants director 2,831 restricted stock units

Q: What insider transaction did TREX report for director David Christian Keffer?

Director David Christian Keffer reported an equity award of 2,831 shares of Trex Common Stock on 2026-07-29. It was recorded as a restricted stock unit grant, not an open-market purchase or sale, and reflects compensation rather than discretionary trading activity.

Q: How many TREX shares were granted to David Christian Keffer and at what price?

David Christian Keffer received a grant of 2,831 Trex Common Stock shares at $42.39 per share . The transaction is coded as a grant or award, indicating compensation, and not a market purchase, even though a reference price per share is disclosed in the filing.

Q: When do the restricted stock units granted to the TREX director vest?

The filing states that the restricted stock unit award will vest on the first anniversary of the grant. This means the 2,831-share award becomes fully vested one year after the 2026-07-29 grant date, subject to any applicable service or employment conditions.

Q: Was the TREX director’s equity grant made under a Rule 10b5-1 trading plan?

The Form 4 indicates the Rule 10b5-1 box is not checked , so this transaction was not reported as occurring under a pre-arranged Rule 10b5-1 trading plan. It is presented as a standard compensation-related equity award to the director.

Filing Impact

(Moderate)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

Keffer David Christian reported acquisition or exercise transactions in this Form 4 filing.

Trex Co Inc director David Christian Keffer reported an equity award of 2,831 shares of Common Stock on 2026-07-29, recorded as a restricted stock unit grant at $42.39 per share. The award vests on the first anniversary of the grant and increases his direct holdings to 6,386 shares.

Insider Trade Summary

Net Buyer: 2,831 shares

Net Buy 1 txn

Insider Keffer David Christian

Role Director

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

Holdings After Transaction: Common Stock — 6,386 shares (Direct)

Footnotes (1)

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

Key Figures

Shares granted: 2,831 shares of Common Stock Grant reference price: $42.39 per share Post-transaction holdings: 6,386 shares

3 metrics

Shares granted 2,831 shares of Common Stock Equity award to director David Christian Keffer on 2026-07-29

Grant reference price $42.39 per share Price per share associated with the 2,831-share award

Post-transaction holdings 6,386 shares Direct Trex Common Stock beneficially owned after the award

Key Terms

restricted stock unit award, non-derivative, Grant, award, or other acquisition

3 terms

restricted stock unit award financial

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

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.

non-derivative financial

"Transaction type is classified as non-derivative Common Stock"

Grant, award, or other acquisition financial

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

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 - 07:45 PM Accepted by SEC EDGAR 07/30/2026 - 07:45 PM

FAQ

What insider transaction did TREX report for director David Christian Keffer?

Director David Christian Keffer reported an equity award of 2,831 shares of Trex Common Stock on 2026-07-29. It was recorded as a restricted stock unit grant, not an open-market purchase or sale, and reflects compensation rather than discretionary trading activity.

How many TREX shares were granted to David Christian Keffer and at what price?

David Christian Keffer received a grant of 2,831 Trex Common Stock shares at $42.39 per share. The transaction is coded as a grant or award, indicating compensation, and not a market purchase, even though a reference price per share is disclosed in the filing.

What are David Christian Keffer’s TREX holdings after this Form 4 transaction?

Following the reported award, David Christian Keffer directly holds 6,386 shares of Trex Common Stock. This total incorporates the 2,831-share restricted stock unit grant reported on 2026-07-29 and represents his post-transaction direct beneficial ownership position in the company.

When do the restricted stock units granted to the TREX director vest?

The filing states that the restricted stock unit award will vest on the first anniversary of the grant. This means the 2,831-share award becomes fully vested one year after the 2026-07-29 grant date, subject to any applicable service or employment conditions.

Was the TREX director’s equity grant made under a Rule 10b5-1 trading plan?

The Form 4 indicates the Rule 10b5-1 box is not checked, so this transaction was not reported as occurring under a pre-arranged Rule 10b5-1 trading plan. It is presented as a standard compensation-related equity award to the director.

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^*

Keffer David Christian

(Last)

(First)

(Middle)

2500 TREX WAY

C/O TREX COMPANY, INC.

(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	6,386	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