WLK - Company ID 0001262823
WESTLAKE CORP has filed 1,689 public company documents between 2003 and 2026. The most frequent type is insider trade (998 filings), alongside the regular cadence of annual reports, quarterly reports, and event disclosures every public company must make. Use the filters to focus on one filing type, or flip the sort to trace the company's history from its earliest paperwork.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.
| Type | Filing | Filed | Period covered | Open |
|---|---|---|---|---|
| CORRESP | Company correspondence | 20y ago2005-12-16 | - | View filing |
| S-3/A | S-3/A | 20y ago2005-12-02 | - | View filing |
| UPLOAD | SEC correspondence | 20y ago2005-11-30 | - | View filing |
| 8-K | Major company event | 20y ago2005-11-29 | 2005-11-28 | View filing |
| S-3/A | S-3/A | 20y ago2005-11-23 | - | View filing |
| 4 | Insider trade | 20y ago2005-11-08 | 2005-11-07 | View filing |
| 10-Q | Quarterly report | 20y ago2005-11-04 | 2005-09-30 | View filing |
| 8-K | Major company event | 20y ago2005-11-03 | 2005-11-03 | View filing |
| 4 | Insider trade | 20y ago2005-10-07 | 2005-10-06 | View filing |
| 8-K | Major company event | 20y ago2005-09-15 | 2005-09-09 | View filing |
| 4 | Insider trade | 20y ago2005-09-13 | 2005-09-09 | View filing |
| 4 | Insider trade | 20y ago2005-09-13 | 2005-09-09 | View filing |
| 4 | Insider trade | 20y ago2005-09-13 | 2005-09-09 | View filing |
| 4 | Insider trade | 20y ago2005-09-13 | 2005-09-09 | View filing |
| 4 | Insider trade | 20y ago2005-09-13 | 2005-09-09 | View filing |
| 4 | Insider trade | 20y ago2005-09-13 | 2005-09-09 | View filing |
| 4 | Insider trade | 20y ago2005-09-13 | 2005-09-09 | View filing |
| 4 | Insider trade | 20y ago2005-09-13 | 2005-09-09 | View filing |
| 4 | Insider trade | 20y ago2005-09-13 | 2005-09-09 | View filing |
| 4 | Insider trade | 20y ago2005-09-13 | 2005-09-09 | View filing |
| 4 | Insider trade | 20y ago2005-09-13 | 2005-09-09 | View filing |
| 4 | Insider trade | 20y ago2005-09-13 | 2005-09-09 | View filing |
| 4 | Insider trade | 20y ago2005-09-13 | 2005-09-09 | View filing |
| 4 | Insider trade | 20y ago2005-09-13 | 2005-09-09 | View filing |
| 4 | Insider trade | 20y ago2005-08-22 | 2005-08-19 | View filing |
| 4 | Insider trade | 20y ago2005-08-18 | 2005-08-17 | View filing |
| 4 | Insider trade | 20y ago2005-08-18 | 2005-08-18 | View filing |
| 4 | Insider trade | 20y ago2005-08-17 | 2005-08-16 | View filing |
| 4 | Insider trade | 20y ago2005-08-17 | 2005-08-16 | View filing |
| 4 | Insider trade | 20y ago2005-08-17 | 2005-08-16 | View filing |
| 10-Q | Quarterly report | 20y ago2005-08-05 | 2005-06-30 | View filing |
| 8-K | Major company event | 20y ago2005-08-03 | 2005-08-03 | View filing |
| 3 | New insider ownership | 21y ago2005-06-17 | 2005-06-15 | View filing |
| CORRESP | Company correspondence | 21y ago2005-06-09 | - | View filing |
| UPLOAD | SEC correspondence | 21y ago2005-06-01 | - | View filing |
| 10-Q | Quarterly report | 21y ago2005-05-10 | 2005-03-31 | View filing |
| 8-K | Major company event | 21y ago2005-05-04 | 2005-05-04 | View filing |
| S-3 | Securities registration | 21y ago2005-05-03 | - | View filing |
| ARS | Annual report to shareholders | 21y ago2005-04-05 | 2004-12-31 | View filing |
| DEF 14A | Proxy statement | 21y ago2005-04-01 | 2005-05-19 | View filing |
| 10-K | Annual report | 21y ago2005-03-16 | 2004-12-31 | View filing |
| 4 | Insider trade | 21y ago2005-03-11 | 2005-03-08 | View filing |
| 8-K | Major company event | 21y ago2005-02-18 | 2005-02-18 | View filing |
| 4 | Insider trade | 21y ago2005-02-17 | 2005-02-16 | View filing |
| 4 | Insider trade | 21y ago2005-02-17 | 2005-02-16 | View filing |
| 4 | Insider trade | 21y ago2005-02-17 | 2005-02-16 | View filing |
| 4 | Insider trade | 21y ago2005-02-17 | 2005-02-16 | View filing |
| SC 13G | Passive ownership stake | 21y ago2005-02-15 | - | View filing |
| SC 13G | Passive ownership stake | 21y ago2005-02-15 | - | View filing |
| SC 13G | Passive ownership stake | 21y ago2005-02-15 | - | View filing |