TREX CO INC — Director's Dealing 2014

Oct 9, 2014

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TREX CO INC (TREX)
CIK: 0001069878
Period of Report: 2014-10-07

Reporting Person: MERLOTTI FRANK H JR (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2014-10-07	Common Stock	M	1332	$12.085	Acquired	8088	Direct
2014-10-07	Common Stock	M	690	$12.35	Acquired	8778	Direct
2014-10-07	Common Stock	M	2446	$9.025	Acquired	11224	Direct
2014-10-07	Common Stock	D	1352	$34.60	Disposed	9872	Direct
2014-10-08	Common Stock	S	1716	$34.42	Disposed	8156	Direct
2014-10-08	Common Stock	S	100	$34.51	Disposed	8056	Direct
2014-10-08	Common Stock	S	100	$34.53	Disposed	7956	Direct
2014-10-08	Common Stock	S	100	$34.56	Disposed	7856	Direct
2014-10-08	Common Stock	S	100	$34.58	Disposed	7756	Direct
2014-10-08	Common Stock	S	100	$34.70	Disposed	7656	Direct
2014-10-08	Common Stock	S	100	$34.80	Disposed	7556	Direct
2014-10-08	Common Stock	S	100	$34.8025	Disposed	7456	Direct
2014-10-08	Common Stock	S	100	$34.83	Disposed	7356	Direct
2014-10-08	Common Stock	S	100	$34.8625	Disposed	7256	Direct
2014-10-08	Common Stock	S	300	$34.89	Disposed	6956	Direct
2014-10-08	Common Stock	S	100	$34.92	Disposed	6856	Direct
2014-10-08	Common Stock	S	100	$34.93	Disposed	6756	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2014-10-07	Stock Appreciation Right	$12.085	M	1332	Disposed	2016-02-08	Common Stock (1332)	Direct
2014-10-07	Stock Appreciation Right	$12.35	M	690	Disposed	2016-07-20	Common Stock (690)	Direct
2014-10-07	Stock Appreciation Right	$9.025	M	2446	Disposed	2017-07-18	Common Stock (2446)	Direct

Footnotes

F1: Stock Appreciation Rights (SARs) are being exercised pursuant to a Rule 10b5-1 Exercise plan adopted by the reporting person on February 25, 2014.

F2: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 Sales plan adopted by the reporting person on February 25, 2014.

F3: The stock appreciation right becomes exerciseable on the one-year anniversary of this grant.