TREX CO INC

Ticker: TREX CUSIP: 89531P105 Class: Common Stock

GREAT LAKES ADVISORS, LLC's Holding History (CIK: 0001078013)

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

Q1 2021

Shares 3,589 Value ($000) $329 Avg Close $94.04 Range $81.71 - $107.64

Q4 2020

Shares 3,725 Value ($000) $312 Avg Close $76.52 Range $64.26 - $87.88

Q3 2020

Shares 3,546 Value ($000) $254 Avg Close $69.18 Range $60.91 - $78.31

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2021	3,589	$329	$94.04	$81.71 - $107.64
Q4 2020	3,725	$312	$76.52	$64.26 - $87.88
Q3 2020	3,546	$254	$69.18	$60.91 - $78.31