TREX CO INC — Director's Dealing 2012

Jul 5, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TREX CO INC (TREX)
CIK: 0001069878
Period of Report: 2012-07-02

Reporting Person: Reese F Timothy (Vice President, Operations)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-07-02	Common Stock	M	3037	$8.20	Acquired	31416	Direct
2012-07-02	Common Stock	D	802	$31.07	Disposed	30614	Direct
2012-07-02	Common Stock	F	943	$31.07	Disposed	29671	Direct
2012-07-05	Common Stock	S	1292	$30.67	Disposed	28379	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-07-02	Stock Appreciation Right	$8.20	M	3037	Disposed	2018-02-05	Common Stock (3037)	Direct

Footnotes

F1: 3,037 Stock Appreciation Rights (SARs) are being exercised pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 28, 2012.

F2: 943 shares are being surrendered as allowed by the Company's 2005 Stock Incentive Plan to cover the payment of taxes currently due on the exercise of SARs.

F3: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 28, 2012.

F4: The stock appreciation right becomes exerciseable in three equal installments beginning on the first anniversary date of the transaction date.