TREX CO INC - Director's Dealing 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TREX CO INC (TREX)
CIK: 0001069878
Period of Report: 2011-02-18

Reporting Person: KAPLAN RONALD W (Director, President and CEO)

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-02-18	Common Stock	S	200	$26.64	Disposed	147809	Direct
2011-02-18	Common Stock	S	178	$26.635	Disposed	147631	Direct
2011-02-18	Common Stock	S	2300	$26.62	Disposed	145331	Direct
2011-02-18	Common Stock	S	1122	$26.61	Disposed	144209	Direct
2011-02-18	Common Stock	S	3489	$26.60	Disposed	140720	Direct
2011-02-18	Common Stock	S	200	$26.595	Disposed	140520	Direct
2011-02-18	Common Stock	S	806	$26.59	Disposed	139714	Direct
2011-02-18	Common Stock	S	2200	$26.58	Disposed	137514	Direct
2011-02-18	Common Stock	S	1705	$26.57	Disposed	135809	Direct
2011-02-18	Common Stock	S	689	$26.56	Disposed	135120	Direct
2011-02-22	Common Stock	S	500	$26.15	Disposed	134620	Direct
2011-02-22	Common Stock	S	6	$26.145	Disposed	134614	Direct
2011-02-22	Common Stock	S	500	$26.12	Disposed	134114	Direct
2011-02-22	Common Stock	S	600	$26.11	Disposed	133514	Direct
2011-02-22	Common Stock	S	200	$26.10	Disposed	133314	Direct
2011-02-22	Common Stock	S	700	$26.09	Disposed	132614	Direct
2011-02-22	Common Stock	S	190	$26.085	Disposed	132424	Direct
2011-02-22	Common Stock	S	2835	$26.08	Disposed	129589	Direct
2011-02-22	Common Stock	S	1359	$25.61	Disposed	128230	Direct
2011-02-22	Common Stock	S	100	$25.605	Disposed	128130	Direct
2011-02-22	Common Stock	S	7000	$25.50	Disposed	121130	Direct

F1: The sales reported in this Form 4 were effected pursuant to Rule 10b5-1 trading plan adopted by the reporting person on May 10, 2010.