TREX CO INC — Director's Dealing 2024

Feb 20, 2024

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TREX CO INC (TREX)
CIK: 0001069878
Period of Report: 2024-02-17

Reporting Person: Zambanini Adam Dante (EVP, Chief Operating Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2024-02-17	Common Stock	F	371	$90.86	Disposed	180286	Direct
2024-02-19	Common Stock	A	5404	$90.86	Acquired	185690	Direct
2024-02-19	Common Stock	A	7721	$90.86	Acquired	193411	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2024-02-19	Stock Appreciation Right	$90.86	A	4694	Acquired	2034-02-19	Common Stock (4694)	Direct

Footnotes

F1: 371 shares are being surrendered as allowed by the Company's 2023 Stock Incentive Plan to cover payment of taxes currently due on previously granted restricted stock units.

F2: This restricted stock unit vests over a three-year period in three equal annual installments occurring March 1, 2025, March 1, 2026 and March 1, 2027.

F3: This restricted stock unit award is performance-based, and vests over a three-year period in three equal installments occurring March 1, 2025, March 1, 2026 and March 1, 2027. 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.

F4: The stock appreciation right becomes exercisable in three equal installments occurring March 1, 2025, March 1, 2026 and March 1, 2027.