TREX CO INC — Director's Dealing 2013

Mar 1, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TREX CO INC (TREX)
CIK: 0001069878
Period of Report: 2013-02-27

Reporting Person: BRUNNER PAUL A (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-02-27	Common Stock	M	272	$39.25	Acquired	1510	Direct
2013-02-27	Common Stock	M	630	$37.29	Acquired	2140	Direct
2013-02-27	Common Stock	M	104	$31.05	Acquired	2244	Direct
2013-02-27	Common Stock	M	87	$37.35	Acquired	2331	Direct
2013-02-27	Common Stock	M	98	$33.45	Acquired	2429	Direct
2013-02-27	Common Stock	M	96	$37.36	Acquired	2525	Direct
2013-02-27	Common Stock	M	246	$25.70	Acquired	2771	Direct
2013-02-27	Common Stock	M	2000	$25.44	Acquired	4771	Direct
2013-02-27	Common Stock	M	284	$24.00	Acquired	5055	Direct
2013-02-27	Common Stock	M	230	$28.80	Acquired	5285	Direct
2013-02-27	Common Stock	S	272	$46.9001	Disposed	5013	Direct
2013-02-27	Common Stock	S	630	$46.8468	Disposed	4383	Direct
2013-02-27	Common Stock	S	2000	$46.9485	Disposed	2383	Direct
2013-02-27	Common Stock	S	864	$46.8201	Disposed	1519	Direct
2013-02-27	Common Stock	S	281	$46.82	Disposed	1238	Direct
2013-02-27	Common Stock	M	2684	$24.70	Acquired	3922	Direct
2013-02-27	Common Stock	M	3669	$18.05	Acquired	7591	Direct
2013-02-27	Common Stock	M	3561	$8.28	Acquired	11152	Direct
2013-02-27	Common Stock	M	2268	$11.11	Acquired	13420	Direct
2013-02-27	Common Stock	M	5938	$10.61	Acquired	19358	Direct
2013-02-27	Common Stock	M	1523	$16.53	Acquired	20881	Direct
2013-02-27	Common Stock	M	1415	$16.94	Acquired	22296	Direct
2013-02-27	Common Stock	M	1284	$21.15	Acquired	23580	Direct
2013-02-27	Common Stock	M	964	$28.35	Acquired	24544	Direct
2013-02-27	Common Stock	M	3482	$14.86	Acquired	28026	Direct
2013-02-27	Common Stock	M	2457	$21.19	Acquired	30483	Direct
2013-02-27	Common Stock	D	9680	$47.30	Disposed	20803	Direct
2013-02-28	Common Stock	S	19565	$46.8399	Disposed	1238	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-02-27	Stock Options (Right to Buy)	$39.25	M	272	Disposed	2013-06-30	Common Stock (272)	Direct
2013-02-27	Stock Options (Right to Buy)	$37.29	M	630	Disposed	2013-07-24	Common Stock (630)	Direct
2013-02-27	Stock Options (Right to Buy)	$31.05	M	104	Disposed	2013-10-01	Common Stock (104)	Direct
2013-02-27	Stock Options (Right to Buy)	$37.35	M	87	Disposed	2014-01-01	Common Stock (87)	Direct
2013-02-27	Stock Options (Right to Buy)	$33.45	M	98	Disposed	2014-04-01	Common Stock (98)	Direct
2013-02-27	Stock Options (Right to Buy)	$37.36	M	96	Disposed	2014-07-02	Common Stock (96)	Direct
2013-02-27	Stock Options (Right to Buy)	$25.70	M	246	Disposed	2015-07-01	Common Stock (246)	Direct
2013-02-27	Stock Options (Right to Buy)	$25.44	M	2000	Disposed	2015-07-21	Common Stock (2000)	Direct
2013-02-27	Stock Options (Right to Buy)	$24.00	M	284	Disposed	2015-10-03	Common Stock (284)	Direct
2013-02-27	Stock Options (Right to Buy)	$28.80	M	230	Disposed	2016-01-03	Common Stock (230)	Direct
2013-02-27	Stock Appreciation Right	$24.70	M	2684	Disposed	2016-07-20	Common Stock (2684)	Direct
2013-02-27	Stock Appreciation Right	$18.05	M	3669	Disposed	2017-07-18	Common Stock (3669)	Direct
2013-02-27	Stock Appreciation Right	$8.28	M	3561	Disposed	2018-04-01	Common Stock (3561)	Direct
2013-02-27	Stock Appreciation Right	$11.11	M	2268	Disposed	2018-07-01	Common Stock (2268)	Direct
2013-02-27	Stock Appreciation Right	$10.61	M	5938	Disposed	2018-07-22	Common Stock (5938)	Direct
2013-02-27	Stock Appreciation Right	$16.53	M	1523	Disposed	2019-01-02	Common Stock (1523)	Direct
2013-02-27	Stock Appreciation Right	$16.94	M	1415	Disposed	2018-10-01	Common Stock (1415)	Direct
2013-02-27	Stock Appreciation Right	$21.15	M	1284	Disposed	2021-07-26	Common Stock (1284)	Direct
2013-02-27	Stock Appreciation Right	$28.35	M	964	Disposed	2022-07-24	Common Stock (964)	Direct
2013-02-27	Stock Appreciation Right	$14.86	M	3482	Disposed	2019-07-21	Common Stock (3482)	Direct
2013-02-27	Stock Appreciation Right	$21.19	M	2457	Disposed	2020-07-20	Common Stock (2457)	Direct

Footnotes

F1: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $46.67 to $47.40, 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 (1) to this Form 4.

F2: The options become exercisable in four equal installments beginning on the date shown as Date Exercisable.