Notice of Proposed Sale · 144
Westlake Corporation
WLKNYSEEQUITYCurrent
Notice of Proposed Sale
Structured filing — 144
primary_doc.xml
Notice of proposed sale. The proposed amounts below do not establish that a sale occurred.
Proposed-sale notice
- Issuer
- WESTLAKE CORPORATION
- Issuer CIK
- 0001262823
- SEC file number
- 001-32260
- Phone
- (713) 960-9111
- Person for whose account securities are to be sold
- ALBERT Y CHAO
- Relationships to issuer
- Officer · Director
- Street
- 2801 Post Oak Boulevard, Suite 600
- City
- Houston
- State / country code
- TX
- Postal code
- 77056
Securities proposed for sale
| Security | Proposed units | Aggregate market value | Units outstanding | Approximate sale date | Exchange | Broker / market maker |
|---|---|---|---|---|---|---|
| Common | 38,873 | 3,120,728.33 | 127,796,548 | 08/11/2026 | NYSE | Morgan Stanley Smith Barney LLC Executive Financial Services |
Broker / market maker — proposed row 1, entry 1
- Name
- Morgan Stanley Smith Barney LLC Executive Financial Services
- Street
- 1 New York Plaza
- Street (continued)
- 8th Floor
- City
- New York
- State / country code
- NY
- Postal code
- 10004
Acquisition of securities to be sold
| Security | Acquired | Nature of acquisition | Acquired from | Amount acquired | Gift transaction | Payment date | Nature of payment |
|---|---|---|---|---|---|---|---|
| Common | 08/11/2026 | Stock Option Exercise | Issuer | 38,873 | N | 08/11/2026 | Cash |
Prior-sale reporting
- Nothing to report for the preceding three months
- Y
Notice signature
- Notice date
- 08/11/2026
- Signed
- /s/ Albert Yuan Chao
Company context
Celebrating 40 years of operations in 2026, Westlake is a global manufacturer and supplier of materials and innovative products that enhance life every day. Headquartered in Houston, with operations in Asia, Europe and North America, we provide the building blocks for vital solutions - from housing and construction, to packaging and healthcare, to automotive and consumer goods.