Westlake Corp
WLKNYSECIK 1262823MaterialsFiscal year ends Dec 31
Reports and events: 291 filings
Newest first, by EDGAR acceptance time (Eastern). Each filing’s page lists its documents on sec.gov and, for 10-K and 10-Q reports, the extracted sections.
What the forms are: 10-K, 10-Q, 8-K, Form 4, DEF 14A, Schedule 13D, Schedule 13G, amendments, accession numbers.
| Filed | Form | What it is | Accession number |
|---|---|---|---|
| 2026-09-2902:06 ET | 8-K | 2.05 Exit or disposal costs; 7.01 Regulation FD disclosure | 0001262823-26-000067 |
| 2026-08-3117:00 ET | 8-K | 5.02 Departure or appointment of officers or directors | 0001193125-26-376996 |
| 2026-08-0514:27 ET | 10-Q | Quarterly reportPeriod 2026-06-30 | 0001262823-26-000032 |
| 2026-08-0407:27 ET | 8-K | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001262823-26-000026 |
| 2026-07-2916:45 ET | 8-K | 8.01 Other events | 0001193125-26-324110 |
| 2026-06-1516:45 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-26-271206 |
| 2026-05-1817:00 ET | 8-K | 5.07 Shareholder vote results | 0001193125-26-229093 |
| 2026-05-0613:49 ET | 10-Q | Quarterly reportPeriod 2026-03-31 | 0001262823-26-000022 |
| 2026-05-0507:30 ET | 8-K | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001262823-26-000019 |
| 2026-05-0107:08 ET | 8-K | 7.01 Regulation FD disclosure | 0001193125-26-199067 |
| 2026-04-2017:05 ET | 8-K | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-26-164225 |
| 2026-04-1406:01 ET | 8-K | 8.01 Other events | 0001193125-26-153703 |
| 2026-04-0606:02 ET | 8-K | 1.01 Entry into a material agreement; 1.02 Termination of a material agreement; 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0001193125-26-142822 |
| 2026-04-0208:01 ET | 8-K | 5.02 Departure or appointment of officers or directors | 0001193125-26-139007 |
| 2026-04-0207:30 ET | DEF 14A | Proxy statementPeriod 2026-05-14 | 0001193125-26-138974 |
| 2026-02-2613:39 ET | 10-K | Annual reportPeriod 2025-12-31 | 0001262823-26-000016 |
| 2026-02-2407:22 ET | 8-K | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001262823-26-000008 |
| 2026-02-2316:55 ET | 8-K | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-26-064221 |
| 2026-01-0616:54 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001262823-26-000005 |
| 2025-12-1507:30 ET | 8-K | 2.05 Exit or disposal costs; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-25-318445 |
| 2025-11-1206:30 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-25-275790 |
| 2025-11-0517:03 ET | 8-K | 1.01 Entry into a material agreement; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-25-267207 |
| 2025-11-0409:51 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-25-263753 |
| 2025-10-3115:02 ET | 10-Q | Quarterly reportPeriod 2025-09-30 | 0001262823-25-000064 |
| 2025-10-3007:33 ET | 8-K | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001262823-25-000061 |
| 2025-08-2616:46 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001262823-25-000056 |
| 2025-08-0617:01 ET | 10-Q | Quarterly reportPeriod 2025-06-30 | 0001262823-25-000052 |
| 2025-08-0507:25 ET | 8-K | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001262823-25-000047 |
| 2025-06-1706:01 ET | 8-K | 2.05 Exit or disposal costs | 0001262823-25-000043 |
| 2025-05-1216:45 ET | 8-K | 5.07 Shareholder vote results | 0001262823-25-000033 |
| 2025-05-0215:18 ET | 10-Q | Quarterly reportPeriod 2025-03-31 | 0001262823-25-000029 |
| 2025-05-0207:25 ET | 8-K | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001262823-25-000026 |
| 2025-04-1618:00 ET | 8-K | 5.02 Departure or appointment of officers or directors | 0001262823-25-000020 |
| 2025-03-2808:23 ET | DEF 14A | Proxy statementPeriod 2025-05-08 | 0001193125-25-066316 |
| 2025-03-0417:00 ET | 8-K | 5.02 Departure or appointment of officers or directors | 0001262823-25-000015 |
| 2025-02-2516:16 ET | 10-K | Annual reportPeriod 2024-12-31 | 0001262823-25-000011 |
| 2025-02-2407:28 ET | 8-K | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001262823-25-000005 |
| 2024-12-1119:17 ET | 8-K | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001193125-24-274528 |
| 2024-11-0610:49 ET | 10-Q | Quarterly reportPeriod 2024-09-30 | 0001262823-24-000053 |
| 2024-11-0507:26 ET | 8-K | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001262823-24-000050 |
| 2024-08-1206:07 ET | 8-K | 5.02 Departure or appointment of officers or directors | 0001193125-24-198308 |
| 2024-08-0912:30 ET | 10-Q | Quarterly reportPeriod 2024-06-30 | 0001262823-24-000045 |
| 2024-08-0607:25 ET | 8-K | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001262823-24-000041 |
| 2024-07-2906:04 ET | 8-K | 2.05 Exit or disposal costs | 0001193125-24-186619 |
| 2024-07-1508:32 ET | 8-K | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-24-178846 |
| 2024-07-0106:05 ET | 8-K | 7.01 Regulation FD disclosure | 0001193125-24-172673 |
| 2024-06-1308:55 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001262823-24-000033 |
| 2024-05-2916:33 ET | 8-K | 5.02 Departure or appointment of officers or directors | 0001193125-24-149225 |
| 2024-05-1316:31 ET | 8-K | 5.07 Shareholder vote results | 0001193125-24-137266 |
| 2024-05-0213:28 ET | 10-Q | Quarterly reportPeriod 2024-03-31 | 0001262823-24-000025 |
Source: SEC EDGAR, the company’s filing index. Last ingested by Listed: Oct 24, 2026, 15:10 ET. Listed shows no prices and gives no investment advice.