WESTLAKE CHEM CORP

Ticker: WLK CUSIP: 960413102 Class: Common Stock

TRUST CO OF VERMONT's Holding History (CIK: 0001134008)

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

Q4 2025
Shares 50 Value ($000) $4 Avg Close $70.79 Range $55.84 - $82.75
Q3 2025
Shares 50 Value ($000) $4 Avg Close $82.33 Range $73.94 - $91.41
Q2 2025
Shares 50 Value ($000) $4 Avg Close $80.28 Range $67.52 - $99.92
Q1 2025
Shares 50 Value ($000) $5 Avg Close $108.01 Range $95.27 - $116.71
Q4 2024
Shares 50 Value ($000) $6 Avg Close $126.38 Range $109.67 - $146.31
Q3 2024
Shares 50 Value ($000) $8 Avg Close $139.25 Range $125.61 - $148.72
Q1 2018
Shares 200 Value ($000) $22 Avg Close $98.39 Range $86.89 - $107.41