TREX CO INC

Ticker: TREX CUSIP: 89531P105 Class: Common Stock

Harfst & Associates, Inc.'s Holding History (CIK: 0001649147)

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

Q1 2017

Shares 500 Value ($000) $34 Avg Close $17.24 Range $16.05 - $19.54

Q4 2015

Shares 2,018 Value ($000) $76 Avg Close $10.02 Range $8.43 - $11.04

Q3 2015

Shares 2,018 Value ($000) $67 Avg Close $10.27 Range $7.93 - $12.54

Q2 2015

Shares 810 Value ($000) $40 Avg Close $12.82 Range $11.68 - $14.43

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2017	500	$34	$17.24	$16.05 - $19.54
Q4 2015	2,018	$76	$10.02	$8.43 - $11.04
Q3 2015	2,018	$67	$10.27	$7.93 - $12.54
Q2 2015	810	$40	$12.82	$11.68 - $14.43