WESTLAKE CHEM CORP

Ticker: WLK CUSIP: 960413102 Class: Common Stock

OMERS ADMINISTRATION Corp's Holding History (CIK: 0001053321)

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

Q2 2025

Shares 11,380 Value ($000) $864 Avg Close $80.28 Range $67.52 - $99.92

Q3 2024

Shares 1,337 Value ($000) $201 Avg Close $139.25 Range $125.61 - $148.72

Q3 2016

Shares 28,800 Value ($000) $1,541 Avg Close $41.92 Range $34.93 - $47.03

Q2 2016

Shares 49,000 Value ($000) $2,103 Avg Close $39.55 Range $34.26 - $45.64

Q1 2016

Shares 66,100 Value ($000) $3,060 Avg Close $39.11 Range $34.33 - $46.52

Q4 2015

Shares 22,300 Value ($000) $1,211 Avg Close $49.75 Range $44.01 - $54.52

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2025	11,380	$864	$80.28	$67.52 - $99.92
Q3 2024	1,337	$201	$139.25	$125.61 - $148.72
Q3 2016	28,800	$1,541	$41.92	$34.93 - $47.03
Q2 2016	49,000	$2,103	$39.55	$34.26 - $45.64
Q1 2016	66,100	$3,060	$39.11	$34.33 - $46.52
Q4 2015	22,300	$1,211	$49.75	$44.01 - $54.52