TREX CO INC

Ticker: TREX CUSIP: 89531P105 Class: Common Stock

ARDSLEY ADVISORY PARTNERS LP's Holding History (CIK: 0000900529)

Note: Option positions (PUT/CALL) are excluded.

Q1 2015

Shares 20,000 Value ($000) $1,091 Avg Close $11.54 Range $9.51 - $13.78

Q4 2014

Shares 24,600 Value ($000) $1,047 Avg Close $9.96 Range $7.77 - $11.21

Q2 2014

Shares 25,000 Value ($000) $720 Avg Close $8.47 Range $7.07 - $10.13

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2015	20,000	$1,091	$11.54	$9.51 - $13.78
Q4 2014	24,600	$1,047	$9.96	$7.77 - $11.21
Q2 2014	25,000	$720	$8.47	$7.07 - $10.13