TREX CO INC — Director's Dealing 2012

Jun 12, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TREX CO INC (TREX)
CIK: 0001069878
Period of Report: 2012-06-08

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-06-08	Common Stock	M	7364	$7.52	Acquired	43446	Direct
2012-06-08	Common Stock	M	4636	$9.14	Acquired	48082	Direct
2012-06-08	Common Stock	D	1888	$29.33	Disposed	46194	Direct
2012-06-08	Common Stock	D	1445	$29.33	Disposed	44749	Direct
2012-06-08	Common Stock	F	2311	$29.33	Disposed	42438	Direct
2012-06-08	Common Stock	F	1347	$29.33	Disposed	41091	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-06-08	Stock Appreciation Right	$7.52	M	7364	Disposed	2018-03-03	Common Stock (7364)	Direct
2012-06-08	Stock Appreciation Right	$9.14	M	4636	Disposed	2018-05-07	Common Stock (4636)	Direct

Footnotes

F1: 7.364 Stock Appreciation Rights are being exercised pursuant to Rule 10b5-1 trading plan adopted by the reporting person on February 28, 2012.

F2: 4,636 Stock Appreciation Rights are being exercised pursuant to Rule 10b5-1 trading plan adopted by the reporting person on February 28, 2012.

F3: 2,311 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.

F4: 1,347 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.

F5: The stock appreciation right becomes exercisable in three equal installments beginning on the first anniversary of the grant date.