B. Andrew Rose - 02 Mar 2026 Form 4 Insider Report for TREX CO INC (TREX)

Role
Director
Signature
/s/ Amy M. Fernandez by power of attorney
Issuer symbol
TREX
Transactions as of
02 Mar 2026
Net transactions value
+$503,560
Form type
4
Filing time
03 Mar 2026, 16:37:59 UTC
Previous filing
25 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
ROSE B ANDREW Director C/O TREX COMPANY, INC., 2500 TREX WAY, WINCHESTER /s/ Amy M. Fernandez by power of attorney 03 Mar 2026 0001451048

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction TREX Common Stock Purchase $14,977 +372 +21% $40.26 2,175 02 Mar 2026 Direct F1
transaction TREX Common Stock Purchase $39,579 +986 +45% $40.14 3,161 03 Mar 2026 Direct F2
transaction TREX Common Stock Purchase $449,003 +11,022 +349% $40.74 14,183 03 Mar 2026 Direct F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $40.13 to $40.33, inclusive. The reporting person undertakes to provide to Issuer, any security holder of Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in footnote (1) to this Form 4.
F2 The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $39.84 to $40.34, inclusive. The reporting person undertakes to provide to Issuer, any security holder of Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in footnote (2) to this Form 4.
F3 The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $40.54 to $40.86, inclusive. The reporting person undertakes to provide to Issuer, any security holder of Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in footnote (3) to this Form 4.