WESTLAKE CHEM CORP

Ticker: WLK CUSIP: 960413102 Class: Common Stock

WHITTIER TRUST CO's Holding History (CIK: 0001137881)

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

Q3 2023

Shares 3 Value ($000) $0 Avg Close $122.44 Range $108.80 - $131.81

Q3 2020

Shares 74 Value ($000) $5 Avg Close $54.23 Range $46.16 - $63.35

Q2 2020

Shares 126 Value ($000) $7 Avg Close $42.05 Range $30.99 - $55.36

Q1 2020

Shares 126 Value ($000) $5 Avg Close $51.06 Range $26.40 - $65.18

Q4 2019

Shares 152 Value ($000) $11 Avg Close $60.78 Range $52.18 - $68.35

Q1 2019

Shares 12 Value ($000) $1 Avg Close $64.77 Range $57.75 - $72.34

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2023	3	$0	$122.44	$108.80 - $131.81
Q3 2020	74	$5	$54.23	$46.16 - $63.35
Q2 2020	126	$7	$42.05	$30.99 - $55.36
Q1 2020	126	$5	$51.06	$26.40 - $65.18
Q4 2019	152	$11	$60.78	$52.18 - $68.35
Q1 2019	12	$1	$64.77	$57.75 - $72.34