WESTLAKE CORP - WLK
All tracked SEC files for this issuer. Showing up to 200 latest records.
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Open ownership details
Form 4 = insider transactions report. Form 144 = notice of proposed sale (not a completed trade confirmation).
Files summary
Total files loaded: 41
Latest filed: May 18, 2026
| Form | Count |
|---|---|
| 4 | 25 |
| 8-K | 11 |
| 144 | 4 |
| 4/A | 1 |
Latest files
| Filed | Form | Report period | Accession | SEC |
|---|---|---|---|---|
| May 18, 2026 | 8-K | May 14, 2026 | 0001193125-26-229093 | View |
| May 14, 2026 | 4 | May 12, 2026 | 0001193125-26-223323 | View |
| May 05, 2026 | 8-K | May 05, 2026 | 0001262823-26-000019 | View |
| May 01, 2026 | 8-K | Apr 27, 2026 | 0001193125-26-199067 | View |
| Apr 20, 2026 | 8-K | Apr 15, 2026 | 0001193125-26-164225 | View |
| Apr 14, 2026 | 8-K | Apr 13, 2026 | 0001193125-26-153703 | View |
| Apr 06, 2026 | 4 | Apr 02, 2026 | 0002126961-26-000004 | View |
| Apr 06, 2026 | 8-K | Apr 02, 2026 | 0001193125-26-142822 | View |
| Apr 02, 2026 | 8-K | Mar 30, 2026 | 0001193125-26-139007 | View |
| Mar 31, 2026 | 4 | Mar 30, 2026 | 0001193125-26-133508 | View |
| Mar 30, 2026 | 4 | Mar 27, 2026 | 0001193125-26-131706 | View |
| Mar 30, 2026 | 144 | — | 0001950047-26-003083 | View |
| Mar 27, 2026 | 144 | — | 0001950047-26-003039 | View |
| Mar 06, 2026 | 4/A | Feb 16, 2022 | 0001193125-26-096289 | View |
| Mar 02, 2026 | 4 | Feb 27, 2026 | 0001193125-26-084672 | View |
| Feb 27, 2026 | 144 | — | 0001950047-26-001885 | View |
| Feb 24, 2026 | 4 | Feb 20, 2026 | 0001193125-26-065177 | View |
| Feb 24, 2026 | 8-K | Feb 24, 2026 | 0001262823-26-000008 | View |
| Feb 23, 2026 | 4 | Feb 19, 2026 | 0001193125-26-063659 | View |
| Feb 23, 2026 | 4 | Feb 19, 2026 | 0001193125-26-063663 | View |
| Feb 23, 2026 | 4 | Feb 19, 2026 | 0001193125-26-063669 | View |
| Feb 23, 2026 | 4 | Feb 19, 2026 | 0001193125-26-063686 | View |
| Feb 23, 2026 | 4 | Feb 19, 2026 | 0001193125-26-063688 | View |
| Feb 23, 2026 | 4 | Feb 19, 2026 | 0001193125-26-063700 | View |
| Feb 23, 2026 | 4 | Feb 20, 2026 | 0001193125-26-063701 | View |
| Feb 23, 2026 | 4 | Feb 19, 2026 | 0001193125-26-063705 | View |
| Feb 23, 2026 | 4 | Feb 19, 2026 | 0001193125-26-063707 | View |
| Feb 23, 2026 | 8-K | Feb 19, 2026 | 0001193125-26-064221 | View |
| Feb 19, 2026 | 4 | Feb 17, 2026 | 0001193125-26-059207 | View |
| Feb 19, 2026 | 4 | Feb 17, 2026 | 0001193125-26-059210 | View |
| Feb 19, 2026 | 4 | Feb 17, 2026 | 0001193125-26-059211 | View |
| Feb 19, 2026 | 4 | Feb 17, 2026 | 0001193125-26-059212 | View |
| Feb 19, 2026 | 4 | Feb 17, 2026 | 0001193125-26-059213 | View |
| Feb 19, 2026 | 4 | Feb 17, 2026 | 0001193125-26-059215 | View |
| Feb 19, 2026 | 4 | Feb 17, 2026 | 0001193125-26-059217 | View |
| Feb 19, 2026 | 4 | Feb 17, 2026 | 0001193125-26-059219 | View |
| Jan 06, 2026 | 8-K | Jan 06, 2026 | 0001262823-26-000005 | View |
| Dec 23, 2025 | 4 | Dec 22, 2025 | 0001193125-25-329926 | View |
| Dec 22, 2025 | 144 | — | 0001950047-25-010631 | View |
| Dec 15, 2025 | 8-K | Dec 12, 2025 | 0001193125-25-318445 | View |
| Dec 10, 2025 | 4 | Dec 10, 2025 | 0001193125-25-314045 | View |