Prithvi Gandhi - 24 Feb 2026 Form 4 Insider Report for TREX CO INC (TREX)

Reporting relationship: SVP, Chief Financial Officer
Issuer ticker: TREX
Reported as of: 24 Feb 2026
Net transaction value: +$1,897,996
SEC form: 4
Accepted by SEC: 25 Feb 2026, 20:52:53 UTC
Prior SEC filing: 17 Nov 2025
Source filing: View source filing
Reporting owner signature: /s/ Amy M. Fernandez by power of attorney

Key filing fact

Prithvi Gandhi filed Form 4 for TREX CO INC (TREX) on 25 Feb 2026.

Key facts

This page summarizes Prithvi Gandhi's Form 4 filing for TREX CO INC (TREX).
3 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 25 Feb 2026, 20:52.

Change

Previous filing in this sequence was filed on 17 Nov 2025.
Current net transaction value: +$1,897,996.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001791227 Primary reporting owner

Gandhi Prithvi

Relationship: SVP, Chief Financial Officer
Address: C/O TREX COMPANY, INC., 2500 TREX WAY, WINCHESTER
Signature: /s/ Amy M. Fernandez by power of attorney
Signature date: 25 Feb 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

TREX transaction

Common Stock

Award

Transaction value: $574,000
Shares: +13,848
Change %: +45%
Price: $41.45
Shares after: 44,512
Date: 24 Feb 2026
Ownership: Direct
Footnotes: F1

TREX transaction

Common Stock

Award

Transaction value: $574,000
Shares: +13,848
Change %: +31%
Price: $41.45
Shares after: 58,360
Date: 24 Feb 2026
Ownership: Direct
Footnotes: F2

TREX transaction

Common Stock

Award

Transaction value: $749,996
Shares: +18,094
Change %: +31%
Price: $41.45
Shares after: 76,454
Date: 24 Feb 2026
Ownership: Direct
Footnotes: F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

This restricted stock unit award vests over a three-year period in three equal annual installments occurring March 1, 2027, March 1, 2028, and March 1, 2029.

Footnote F2

This restricted stock unit award is performance-based, and vests over a three-year period in three equal installments occurring March 1, 2027, March 1, 2028, and March 1, 2029. The number of shares set forth above is the target number of shares. The number of shares that will actually vest each year will be based upon performance against certain financial goals for the Company and will range from 0% to 200% of the target number of shares.

Footnote F3

This restricted stock unit award will vest in accordance with the terms of a Retention Agreement, dated February 24, 2026, between Trex Company, Inc. and Prithvi S. Gandhi; as further described in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2025.