TREX CO INC — Director's Dealing 2011

Feb 18, 2011

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: TREX CO INC (TREX)
CIK: 0001069878
Period of Report: 2011-02-16

Reporting Person: Zambanini Adam Dante (Vice President, Marketing)

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	157	Direct
Common Stock	904	Direct
Common Stock	2000	Direct
Common Stock	815	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Stock Appreciation Right	$13.44	2018-02-18	Common Stock (2729)		Direct
Stock Appreciation Right	$9.14	2019-05-07	Common Stock (1119)		Direct
Stock Appreciation Right	$25.37	2017-02-21	Common Stock (1219)		Direct

Footnotes

F1: This restricted stock award vests on May 7, 2011.

F2: This restricted stock award vests in approximately two equal installments on February 18, 2011 and February 18, 2012.

F3: This restricted stock award vests over a three-year period in approximately three equal installments beginning on the first anniversary of the February 17, 2010 grant date.

F4: This stock appreciation right becomes exercisable in approximately three equal annual installments beginning on the first anniversary of the February 18, 2009 grant date.

F5: This stock appreciation right becomes exercisable in approximately three equal annual installments beginning on the first anniversary of the May 7, 2008 grant date.

F6: This stock appreciation right is fully exercisable.