TREX CO INC — Director's Dealing 2012

Aug 20, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TREX CO INC (TREX)
CIK: 0001069878
Period of Report: 2012-08-16

Reporting Person: Cline James E (Vice President and CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-08-16	Common Stock	M	12000	$9.14	Acquired	65418	Direct
2012-08-16	Common Stock	D	3729	$29.41	Disposed	61689	Direct
2012-08-16	Common Stock	F	3491	$29.41	Disposed	58198	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-08-16	Stock Appreciation Right	$9.14	M	12000	Disposed	2018-05-07	Common Stock (12000)	Direct

Footnotes

F1: 12,000 Stock Appreciation Rights are being exercised pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 28, 2012.

F2: 3,491 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 exercisable in three equal installments beginning on the first anniversary date of the transaction date.