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

Role
SVP, Chief Financial Officer
Signature
/s/ Amy M. Fernandez by power of attorney
Issuer symbol
TREX
Transactions as of
24 Feb 2026
Net transactions value
+$1,897,996
Form type
4
Filing time
25 Feb 2026, 20:52:53 UTC
Previous filing
17 Nov 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Gandhi Prithvi SVP, Chief Financial Officer C/O TREX COMPANY, INC., 2500 TREX WAY, WINCHESTER /s/ Amy M. Fernandez by power of attorney 25 Feb 2026 0001791227

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction TREX Common Stock Award $574,000 +13,848 +45% $41.45 44,512 24 Feb 2026 Direct F1
transaction TREX Common Stock Award $574,000 +13,848 +31% $41.45 58,360 24 Feb 2026 Direct F2
transaction TREX Common Stock Award $749,996 +18,094 +31% $41.45 76,454 24 Feb 2026 Direct F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
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.
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.
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.