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 · 5 exercises

CHAO JAMES

Filed: 9/1/2023ACC: 0001209191-23-047916

InsiderCHAO JAMESCIK 1299505

→

IssuerWESTLAKE CORPCIK 1262823

DirectorOfficer· Senior Chairman

Since Feb 2026

-302.86K

Net shares

Net seller

$32.10M

Total sold

Open market trades

0B · 0S

Total transactions

244.59K acquired · 547.45K disposed

Non-Derivative Transactions8

Common Stock

Direct

M · Option Exercise

+47.57K

Price / share

$44.42

Trade value

$2.11M

% of position

39.4%

8/31/2023

120.64K→168.21K

Common Stock

Direct

M · Option Exercise

+62.20K

Price / share

$61.87

Trade value

$3.85M

% of position

37.0%

8/31/2023

168.21K→230.41K

Common Stock

Direct

M · Option Exercise

+35.32K

Price / share

$107.75

Trade value

$3.81M

% of position

15.3%

8/31/2023

230.41K→265.73K

Common Stock

Direct

M · Option Exercise

+55.77K

Price / share

$79.83

Trade value

$4.45M

% of position

21.0%

8/31/2023

265.73K→321.49K

Common Stock

Direct

M · Option Exercise

+43.74K

Price / share

$65.81

Trade value

$2.88M

% of position

13.6%

8/31/2023

321.49K→365.23K

Common Stock

Direct

D · Disposition

−226.59K

Price / share

$131.15

Trade value

$29.72M

% of position

62.0%

8/31/2023

365.23K→138.64K

Common Stock

Direct

D · Disposition

−18K

Price / share

$132.48

Trade value

$2.38M

% of position

13.0%

8/31/2023

138.64K→120.64K

Common Stock

Direct

G · Gift

−58.27K

Price / share

—

Trade value

—

% of position

48.3%

8/31/2023

120.64K→62.37K

Total

Net shares

−58.27K

Net value

-$15.01M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	8/31/2023	M · Option Exercise	+47.57K	$44.42	$2.11M	39.4%	120.64K	168.21K
Common Stock Direct	8/31/2023	M · Option Exercise	+62.20K	$61.87	$3.85M	37.0%	168.21K	230.41K
Common Stock Direct	8/31/2023	M · Option Exercise	+35.32K	$107.75	$3.81M	15.3%	230.41K	265.73K
Common Stock Direct	8/31/2023	M · Option Exercise	+55.77K	$79.83	$4.45M	21.0%	265.73K	321.49K
Common Stock Direct	8/31/2023	M · Option Exercise	+43.74K	$65.81	$2.88M	13.6%	321.49K	365.23K
Common Stock Direct	8/31/2023	D · Disposition	−226.59K	$131.15	$29.72M	62.0%	365.23K	138.64K
Common Stock Direct	8/31/2023	D · Disposition	−18K	$132.48	$2.38M	13.0%	138.64K	120.64K
Common Stock Direct	8/31/2023	G · Gift	−58.27K	—	—	48.3%	120.64K	62.37K
Total			−58.27K		-$15.01M

Derivative Transactions5

Emplopyee Option (right to buy)

Direct

M · Option Exercise

Converts to

Common Stock

47.57K shares

−47.57K

Strike price

44.42

Held after

0.00

Exercisable

—

8/31/2023

Emplopyee Option (right to buy)

Direct

M · Option Exercise

Converts to

Common Stock

62.20K shares

−62.20K

Strike price

61.865

Held after

0.00

Exercisable

—

8/31/2023

Emplopyee Option (right to buy)

Direct

M · Option Exercise

Converts to

Common Stock

35.32K shares

−35.32K

Strike price

107.75

Held after

0.00

Exercisable

—

8/31/2023

Emplopyee Option (right to buy)

Direct

M · Option Exercise

Converts to

Common Stock

55.77K shares

−55.77K

Strike price

79.83

Held after

0.00

Exercisable

—

8/31/2023

Emplopyee Option (right to buy)

Direct

M · Option Exercise

Converts to

Common Stock

43.74K shares

−43.74K

Strike price

65.8125

Held after

34.60K

Exercisable

—

8/31/2023

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Emplopyee Option (right to buy) Direct	Common Stock47.57K shares	8/31/2023	M · Option Exercise	−47.57K	44.42	—	0.00
Emplopyee Option (right to buy) Direct	Common Stock62.20K shares	8/31/2023	M · Option Exercise	−62.20K	61.865	—	0.00
Emplopyee Option (right to buy) Direct	Common Stock35.32K shares	8/31/2023	M · Option Exercise	−35.32K	107.75	—	0.00
Emplopyee Option (right to buy) Direct	Common Stock55.77K shares	8/31/2023	M · Option Exercise	−55.77K	79.83	—	0.00
Emplopyee Option (right to buy) Direct	Common Stock43.74K shares	8/31/2023	M · Option Exercise	−43.74K	65.8125	—	34.60K

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