WESTLAKE CHEM CORP

Ticker: WLK CUSIP: 960413102 Class: Common Stock

COMERICA BANK's Holding History (CIK: 0000901541)

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

Q4 2025

Shares 28,483 Value ($000) $2,106 Avg Close $70.79 Range $55.84 - $82.75

Q3 2025

Shares 28,262 Value ($000) $2,178 Avg Close $82.33 Range $73.94 - $91.41

Q2 2025

Shares 34,333 Value ($000) $2,607 Avg Close $80.28 Range $67.52 - $99.92

Q1 2025

Shares 30,638 Value ($000) $3,065 Avg Close $108.01 Range $95.27 - $116.71

Q4 2024

Shares 29,600 Value ($000) $3,394 Avg Close $126.38 Range $109.67 - $146.31

Q3 2024

Shares 25,099 Value ($000) $3,772 Avg Close $139.25 Range $125.61 - $148.72

Q2 2024

Shares 23,569 Value ($000) $3,413 Avg Close $148.16 Range $138.77 - $156.68

Q1 2024

Shares 24,490 Value ($000) $3,742 Avg Close $135.33 Range $113.88 - $147.53

Q4 2023

Shares 20,780 Value ($000) $2,908 Avg Close $121.60 Range $107.83 - $137.84

Q3 2023

Shares 20,043 Value ($000) $2,499 Avg Close $122.44 Range $108.80 - $131.81

Q2 2023

Shares 14,160 Value ($000) $0 Avg Close $108.79 Range $98.37 - $116.78

Q4 2022

Shares 18,671 Value ($000) $2 Avg Close $95.20 Range $80.55 - $107.11

Q3 2022

Shares 3,460 Value ($000) $328 Avg Close $90.33 Range $76.70 - $104.08

Q2 2022

Shares 2,921 Value ($000) $276 Avg Close $115.03 Range $86.41 - $132.48

Q1 2022

Shares 3,372 Value ($000) $439 Avg Close $102.15 Range $87.54 - $119.36

Q4 2021

Shares 4,723 Value ($000) $467 Avg Close $91.08 Range $82.73 - $97.95

Q3 2021

Shares 10,513 Value ($000) $946 Avg Close $79.74 Range $72.56 - $88.16

Q2 2021

Shares 5,759 Value ($000) $466 Avg Close $90.14 Range $80.84 - $98.96

Q1 2021

Shares 5,925 Value ($000) $554 Avg Close $80.32 Range $68.77 - $90.16

Q4 2020

Shares 5,255 Value ($000) $431 Avg Close $68.91 Range $56.02 - $78.45

Q1 2020

Shares 7,007 Value ($000) $285 Avg Close $51.06 Range $26.40 - $65.18

Q1 2014

Shares 4,205 Value ($000) $278 Avg Close $53.68 Range $48.11 - $58.70

Q4 2013

Shares 2,269 Value ($000) $277 Avg Close $47.34 Range $43.59 - $51.55

Q3 2013

Shares 3,286 Value ($000) $344 Avg Close $42.90 Range $40.28 - $45.40

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	28,483	$2,106	$70.79	$55.84 - $82.75
Q3 2025	28,262	$2,178	$82.33	$73.94 - $91.41
Q2 2025	34,333	$2,607	$80.28	$67.52 - $99.92
Q1 2025	30,638	$3,065	$108.01	$95.27 - $116.71
Q4 2024	29,600	$3,394	$126.38	$109.67 - $146.31
Q3 2024	25,099	$3,772	$139.25	$125.61 - $148.72
Q2 2024	23,569	$3,413	$148.16	$138.77 - $156.68
Q1 2024	24,490	$3,742	$135.33	$113.88 - $147.53
Q4 2023	20,780	$2,908	$121.60	$107.83 - $137.84
Q3 2023	20,043	$2,499	$122.44	$108.80 - $131.81
Q2 2023	14,160	$0	$108.79	$98.37 - $116.78
Q4 2022	18,671	$2	$95.20	$80.55 - $107.11
Q3 2022	3,460	$328	$90.33	$76.70 - $104.08
Q2 2022	2,921	$276	$115.03	$86.41 - $132.48
Q1 2022	3,372	$439	$102.15	$87.54 - $119.36
Q4 2021	4,723	$467	$91.08	$82.73 - $97.95
Q3 2021	10,513	$946	$79.74	$72.56 - $88.16
Q2 2021	5,759	$466	$90.14	$80.84 - $98.96
Q1 2021	5,925	$554	$80.32	$68.77 - $90.16
Q4 2020	5,255	$431	$68.91	$56.02 - $78.45
Q1 2020	7,007	$285	$51.06	$26.40 - $65.18
Q1 2014	4,205	$278	$53.68	$48.11 - $58.70
Q4 2013	2,269	$277	$47.34	$43.59 - $51.55
Q3 2013	3,286	$344	$42.90	$40.28 - $45.40