TREX CO INC — Director's Dealing 2013

Oct 3, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TREX CO INC (TREX)
CIK: 0001069878
Period of Report: 2013-10-01

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-10-01	Common Stock	M	4210	$13.44	Acquired	47018	Direct
2013-10-01	Common Stock	D	1154	$49.02	Disposed	45864	Direct
2013-10-01	Common Stock	F	1458	$49.02	Disposed	44406	Direct
2013-10-03	Common Stock	S	1598	$48.48	Disposed	42808	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-10-01	Stock Appreciation Right	$13.44	M	4210	Disposed	2019-02-18	Common Stock (4210)	Direct

Footnotes

F1: 4,210 Stock Appreciation Rights (SARs) are being exercised pursuant to a Rule 10b5-1 SAR Exercise plan adopted by the reporting person on February 20, 2013.

F2: 1,458 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 stock appreciation rights.

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 20, 2013.

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