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Westlake Corp SEC Filings
What Westlake Corp has told the SEC happened, by the 8-K items and forms it filed under: when it reported results, who joined or left, what it bought or sold, and whether its auditor or its accounts ever changed.
WLK overview →Filings on file
131
since Nov 8, 2016
Warning signs
0
none filed
Last results
Aug 4, 2026
8-K item 2.02
Industry
Industrial Organic Chemicals
SIC 2860
Newest first
Each label is a form type or an 8-K item as filed; each row links to the filing.
| Filed | What it reports | Document |
|---|---|---|
| Aug 31, 2026 | Executive or director change 8-K | Read ↗ |
| Apr 20, 2026 | Executive or director change 8-K | Read ↗ |
| Apr 2, 2026 | Executive or director change 8-K | Read ↗ |
| Feb 23, 2026 | Executive or director change 8-K | Read ↗ |
| Apr 16, 2025 | Executive or director change 8-K | Read ↗ |
| Mar 4, 2025 | Executive or director change 8-K | Read ↗ |
| Dec 11, 2024 | Executive or director change 8-K | Read ↗ |
| Aug 12, 2024 | Executive or director change 8-K | Read ↗ |
| Jul 15, 2024 | Executive or director change 8-K | Read ↗ |
| May 29, 2024 | Executive or director change 8-K | Read ↗ |
| Apr 25, 2024 | Executive or director change 8-K | Read ↗ |
| May 16, 2023 | Executive or director changeShareholder vote 8-K | Read ↗ |
| Apr 5, 2023 | Executive or director change 8-K | Read ↗ |
| Feb 21, 2023 | Executive or director change 8-K | Read ↗ |
| Nov 18, 2020 | Executive or director change 8-K | Read ↗ |
| Feb 18, 2020 | Executive or director change 8-K | Read ↗ |
| Jan 31, 2020 | Executive or director change 8-K | Read ↗ |
| Aug 17, 2018 | Executive or director change 8-K | Read ↗ |
| Jan 8, 2018 | Executive or director change 8-K | Read ↗ |
| May 19, 2017 | Executive or director changeShareholder vote 8-K | Read ↗ |
Source: Westlake Corp's EDGAR filing history, the last ten years. The labels are the form types and 8-K item numbers the company filed under, not a reading of what it wrote — an item 5.02 can be a chief executive fired or a director retiring on schedule — so each row links to the filing.
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