Michael F. Golden - 01 Dec 2021 Form 4 Insider Report for TREX CO INC (TREX)

Role: Director
Signature: /s/ William R. Gupp by power of attorney
Issuer symbol: TREX
Transactions as of: 01 Dec 2021
Net transactions value: -$640,280
Form type: 4
Filing time: 03 Dec 2021, 08:17:43 UTC
Previous filing: 29 Sep 2021
Next filing: 28 Jul 2022
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	TREX	Common Stock	Options Exercise	$27,450	+5,000	+29%	$5.49^*	21,951	01 Dec 2021	Direct	F1
transaction	TREX	Common Stock	Disposed to Issuer	$27,454	-205	-0.93%	$133.92	21,746	01 Dec 2021	Direct
transaction	TREX	Common Stock	Sale	$640,276	-4,795	-22%	$133.53	16,951	02 Dec 2021	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	TREX	Stock Appreciation Right	Options Exercise	$0	-5,000	-27%	$0.000000	13,840	01 Dec 2021	Common Stock	5,000	$5.49	Direct

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Stock Appreciation Rights (SARs) are being exercised pursuant to a Rule 10b5-1 plan adopted by the reporting person on August 6, 2021.