Employee Count History - Westlake Corporation
Historical employee count data from SEC filings.
Workforce Trend Analysis
Employee Count History
SEC Filing History
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| Filing Date | Period | Employee Count | Form Type | YoY Change |
|---|---|---|---|---|
| Feb 26, 2026 | Dec 31, 2025 | 14,600 | 10-K | -6.05% |
| Feb 25, 2025 | Dec 31, 2024 | 15,540 | 10-K | +0.13% |
| Feb 22, 2024 | Dec 31, 2023 | 15,520 | 10-K | -2.51% |
| Feb 22, 2023 | Dec 31, 2022 | 15,920 | 10-K | +9.42% |
| Feb 23, 2022 | Dec 31, 2021 | 14,550 | 10-K | +57.81% |
| Feb 24, 2021 | Dec 31, 2020 | 9,220 | 10-K | -2.23% |
Feb 19, 2020 | Dec 31, 2019 | — | — | — |
Feb 20, 2019 | Dec 31, 2018 | — | — | — |
Feb 21, 2018 | Dec 31, 2017 | — | — | — |
Feb 22, 2017 | Dec 31, 2016 | — | — | — |
Feb 24, 2016 | Dec 31, 2015 | — | — | — |
Feb 25, 2015 | Dec 31, 2014 | — | — | — |
Feb 21, 2014 | Dec 31, 2013 | — | — | — |
Feb 22, 2013 | Dec 31, 2012 | — | — | — |
Feb 23, 2012 | Dec 31, 2011 | — | — | — |
Feb 24, 2011 | Dec 31, 2010 | — | — | — |
Feb 24, 2010 | Dec 31, 2009 | — | — | — |
Feb 19, 2009 | Dec 31, 2008 | — | — | — |
Feb 20, 2008 | Dec 31, 2007 | — | — | — |
Feb 26, 2007 | Dec 31, 2006 | — | — | — |
Feb 23, 2006 | Dec 31, 2005 | — | — | — |
Mar 16, 2005 | Dec 31, 2004 | — | — | — |
Mar 26, 2004 | Dec 31, 2003 | — | — | — |