CHAO JAMES (Senior Chairman) exercised options at WESTLAKE CORP

Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.

M · 3 exercises

CHAO JAMES

Filed: 12/1/2023ACC: 0001209191-23-057056

InsiderCHAO JAMESCIK 1299505

→

IssuerWESTLAKE CORPCIK 1262823

DirectorOfficer· Senior Chairman

Since Feb 2026

-68.17K

Net shares

Net seller

$8.76M

Total sold

Open market trades

0B · 0S

Total transactions

68.21K acquired · 136.39K disposed

Non-Derivative Transactions5

Common Stock

Direct

M · Option Exercise

+34.60K

Price / share

$65.81

Trade value

$2.28M

% of position

55.4%

11/30/2023

62.40K→97K

Common Stock

Direct

M · Option Exercise

+24.44K

Price / share

$86.54

Trade value

$2.11M

% of position

25.2%

11/30/2023

97K→121.44K

Common Stock

Direct

M · Option Exercise

+9.18K

Price / share

$108.12

Trade value

$992.19K

% of position

7.6%

11/30/2023

121.44K→130.61K

Common Stock

Direct

D · Disposition

−57.23K

Price / share

$128.37

Trade value

$7.35M

% of position

43.8%

11/30/2023

130.61K→73.38K

Common Stock

Direct

D · Disposition

−10.98K

Price / share

$129.14

Trade value

$1.42M

% of position

15.0%

11/30/2023

73.38K→62.40K

Total

Net shares

+0.00

Net value

-$3.38M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	11/30/2023	M · Option Exercise	+34.60K	$65.81	$2.28M	55.4%	62.40K	97K
Common Stock Direct	11/30/2023	M · Option Exercise	+24.44K	$86.54	$2.11M	25.2%	97K	121.44K
Common Stock Direct	11/30/2023	M · Option Exercise	+9.18K	$108.12	$992.19K	7.6%	121.44K	130.61K
Common Stock Direct	11/30/2023	D · Disposition	−57.23K	$128.37	$7.35M	43.8%	130.61K	73.38K
Common Stock Direct	11/30/2023	D · Disposition	−10.98K	$129.14	$1.42M	15.0%	73.38K	62.40K
Total			+0.00		-$3.38M

Derivative Transactions3

Employee Option (right to buy)

Direct

M · Option Exercise

Converts to

Common Stock

34.56K shares

−34.56K

Strike price

65.8125

Held after

0.00

Exercisable

—

11/30/2023

Employee Option (right to buy)

Direct

M · Option Exercise

Converts to

Common Stock

24.44K shares

−24.44K

Strike price

86.5379

Held after

12.59K

Exercisable

—

11/30/2023

Employee Option (right to buy)

Direct

M · Option Exercise

Converts to

Common Stock

9.18K shares

−9.18K

Strike price

108.1175

Held after

18.63K

Exercisable

—

11/30/2023

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Employee Option (right to buy) Direct	Common Stock34.56K shares	11/30/2023	M · Option Exercise	−34.56K	65.8125	—	0.00
Employee Option (right to buy) Direct	Common Stock24.44K shares	11/30/2023	M · Option Exercise	−24.44K	86.5379	—	12.59K
Employee Option (right to buy) Direct	Common Stock9.18K shares	11/30/2023	M · Option Exercise	−9.18K	108.1175	—	18.63K

Non-Derivative Holdings (Post-Transaction)1

Common Stock

Indirect

Shares owned93.41M

Total

93.41M indirect93.41M

Security Title	Shares Owned	Ownership Type
Common Stock	93.41M	Indirect
Total	93.41M	93.41M indirect

Derivative Holdings (Post-Transaction)0

No derivative holdings reported