TREX CO INC - Director's Dealing 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TREX CO INC (TREX)
CIK: 0001069878
Period of Report: 2015-06-15

Reporting Person: MERLOTTI FRANK H JR (Director)

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-06-15	Common Stock	M	2000	$5.305	Acquired	8756	Direct
2015-06-15	Common Stock	D	208	$51.21	Disposed	8548	Direct
2015-06-16	Common Stock	S	100	$50.80	Disposed	8448	Direct
2015-06-16	Common Stock	S	100	$50.88	Disposed	8348	Direct
2015-06-16	Common Stock	S	100	$50.8801	Disposed	8248	Direct
2015-06-16	Common Stock	S	100	$50.9901	Disposed	8148	Direct
2015-06-16	Common Stock	S	192	$51.00	Disposed	7956	Direct
2015-06-16	Common Stock	S	100	$51.09	Disposed	7856	Direct
2015-06-16	Common Stock	S	100	$51.12	Disposed	7756	Direct
2015-06-16	Common Stock	S	200	$51.15	Disposed	7556	Direct
2015-06-16	Common Stock	S	100	$51.1501	Disposed	7456	Direct
2015-06-16	Common Stock	S	200	$51.1701	Disposed	7256	Direct
2015-06-16	Common Stock	S	100	$51.30	Disposed	7156	Direct
2015-06-16	Common Stock	S	100	$51.31	Disposed	7056	Direct
2015-06-16	Common Stock	S	100	$51.3101	Disposed	6956	Direct
2015-06-16	Common Stock	S	100	$51.32	Disposed	6856	Direct
2015-06-16	Common Stock	S	100	$51.33	Disposed	6756	Direct

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2015-06-15	Stock Appreciation Right	$5.305	M	2000	Disposed	2018-07-22	Common Stock (2000)	Direct

F1: Stock Appreciation Rights (SARs) are being exercised pursuant to a Rule 10b5-1 Exercise plan adopted by the reporting person on May 11, 2015.

F2: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 Sales plan adopted by the reporting person on May 11, 2015.