WESTLAKE CHEM CORP

Ticker: WLK CUSIP: 960413102 Class: Common Stock

HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND's Holding History (CIK: 0001535845)

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

Q2 2025

Shares 8,800 Value ($000) $668 Avg Close $80.28 Range $67.52 - $99.92

Q1 2025

Shares 30,900 Value ($000) $3,091 Avg Close $108.01 Range $95.27 - $116.71

Q4 2024

Shares 20,300 Value ($000) $2,327 Avg Close $126.38 Range $109.67 - $146.31

Q3 2022

Shares 31,797 Value ($000) $2,763 Avg Close $90.33 Range $76.70 - $104.08

Q2 2022

Shares 75,922 Value ($000) $7,442 Avg Close $115.03 Range $86.41 - $132.48

Q1 2022

Shares 9,313 Value ($000) $1,149 Avg Close $102.15 Range $87.54 - $119.36

Q4 2021

Shares 2,764 Value ($000) $268 Avg Close $91.08 Range $82.73 - $97.95

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2025	8,800	$668	$80.28	$67.52 - $99.92
Q1 2025	30,900	$3,091	$108.01	$95.27 - $116.71
Q4 2024	20,300	$2,327	$126.38	$109.67 - $146.31
Q3 2022	31,797	$2,763	$90.33	$76.70 - $104.08
Q2 2022	75,922	$7,442	$115.03	$86.41 - $132.48
Q1 2022	9,313	$1,149	$102.15	$87.54 - $119.36
Q4 2021	2,764	$268	$91.08	$82.73 - $97.95