WESTLAKE CHEM CORP

Ticker: WLK CUSIP: 960413102 Class: Common Stock

THOMPSON SIEGEL & WALMSLEY LLC's Holding History (CIK: 0001008322)

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

Q4 2025
Shares 536,290 Value ($000) $40 Avg Close $70.79 Range $55.84 - $82.75
Q3 2025
Shares 441,340 Value ($000) $34 Avg Close $82.33 Range $73.94 - $91.41
Q4 2023
Shares 627 Value ($000) $0 Avg Close $121.60 Range $107.83 - $137.84
Q3 2023
Shares 627 Value ($000) $0 Avg Close $122.44 Range $108.80 - $131.81
Q2 2023
Shares 653 Value ($000) $0 Avg Close $108.79 Range $98.37 - $116.78
Q1 2023
Shares 653 Value ($000) $0 Avg Close $109.37 Range $92.83 - $119.59
Q4 2022
Shares 5,909 Value ($000) $1 Avg Close $95.20 Range $80.55 - $107.11
Q3 2022
Shares 27,857 Value ($000) $2,420 Avg Close $90.33 Range $76.70 - $104.08
Q2 2022
Shares 26,738 Value ($000) $2,621 Avg Close $115.03 Range $86.41 - $132.48
Q1 2020
Shares 12,798 Value ($000) $488 Avg Close $51.06 Range $26.40 - $65.18
Q4 2019
Shares 362,955 Value ($000) $25,462 Avg Close $60.78 Range $52.18 - $68.35
Q3 2019
Shares 623,469 Value ($000) $40,850 Avg Close $57.99 Range $50.43 - $64.27
Q4 2018
Shares 60 Value ($000) $4 Avg Close $64.35 Range $53.36 - $76.44
Q3 2018
Shares 60 Value ($000) $5 Avg Close $86.83 Range $72.82 - $100.10
Q2 2018
Shares 76 Value ($000) $8 Avg Close $99.34 Range $90.39 - $110.06
Q1 2018
Shares 76 Value ($000) $8 Avg Close $98.39 Range $86.89 - $107.41
Q4 2017
Shares 76 Value ($000) $8 Avg Close $81.78 Range $72.56 - $95.02
Q3 2017
Shares 81 Value ($000) $7 Avg Close $64.66 Range $57.52 - $74.59
Q2 2017
Shares 81 Value ($000) $5 Avg Close $55.73 Range $52.23 - $59.49
Q1 2017
Shares 81 Value ($000) $5 Avg Close $55.38 Range $49.25 - $59.68
Q4 2016
Shares 7,199 Value ($000) $403 Avg Close $47.64 Range $42.61 - $53.78
Q3 2016
Shares 380,796 Value ($000) $20,372 Avg Close $41.92 Range $34.93 - $47.03