TREX CO INC — Director's Dealing 2013

Jan 4, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TREX CO INC (TREX)
CIK: 0001069878
Period of Report: 2013-01-02

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-01-02	Common Stock	M	3594	$9.14	Acquired	49309	Direct
2013-01-02	Common Stock	D	853	$38.53	Disposed	48456	Direct
2013-01-02	Common Stock	F	1327	$38.53	Disposed	47129	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-01-02	Stock Appreciation Right	$9.14	M	3594	Disposed	2018-05-07	Common Stock (3594)	Direct

Footnotes

F1: 3,594 Stock Appreciation Rights (SARs) are being exercised pursuant to a Rule 10b5-1 SAR Exercise plan adopted by the reporting person on July 31, 2012.

F2: 1,327 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 stock appreciation right becomes exerciseable in three equal installments beginning on the first anniversary date of the transaction date.