WESTLAKE CHEM CORP

Ticker: WLK CUSIP: 960413102 Class: Common Stock

Chevy Chase Trust Holdings, LLC's Holding History (CIK: 0001462020)

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

Q4 2019

Shares 17 Value ($000) $1 Avg Close $60.78 Range $52.18 - $68.35

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2019	17	$1	$60.78	$52.18 - $68.35