TREX CO INC — Director's Dealing 2013

Feb 22, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TREX CO INC (TREX)
CIK: 0001069878
Period of Report: 2013-02-20

Reporting Person: Gerhard Christopher Paul (Vice President, Sales)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-02-20	Common Stock	M	844	$23.37	Acquired	5867	Direct
2013-02-20	Common Stock	M	1207	$9.14	Acquired	7074	Direct
2013-02-20	Common Stock	F	455	$47.73	Disposed	6619	Direct
2013-02-20	Common Stock	D	680	$47.73	Disposed	5939	Direct
2013-02-21	Common Stock	S	916	$45.3524	Disposed	5023	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-02-20	Stock Appreciation Right	$25.37	M	844	Disposed	2017-02-21	Common Stock (844)	Direct
2013-02-20	Stock Appreciation Right	$9.14	M	1207	Disposed	2018-05-07	Common Stock (1207)	Direct

Footnotes

F1: 455 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.

F2: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $44.88 to $45.78, inclusive. The reporting person undertakes to provide the Company, any security holder of the Company or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) to this Form 4.