Westlake Corporation

WLKNYSEBasic Materials● Active

$85.28

+$0.64(+0.76%)

Market Cap$10.9B

P/E Ratio—

52W High$124.23

52W Low$56.33

Avg Volume1.2M

Open$84.38

Beta0.59

Employees Ownership Insider Trades

Westlake Corporation (WLK) Number of Employees – History & Annual Headcount

Annual SEC headcount, year-over-year change, and per-employee efficiency — chart and full history below.

SEC EDGAR · FMP · WLK · as of Feb 26, 2026

Latest filing snapshot

14,600

-940-6.05%vs prior year

Westlake Corporation (WLK) employee data is sourced from the annual SEC 10-K filing. As of 2025, full-time employees only. Global consolidated headcount. View SEC filing ↗

SEC 10-K·Period end: 2025-12-31·Full-time · Global

Total Employees

14,600

Change (1Y)

-940

Growth % (1Y)

-6.05%

Revenue / Employee

$765.1K

Net Income / Employee

$-103.3K

Market Cap

$10.9B

WLK Employee Count

2003 – 2025 · Annual · SEC filing

Source: SEC annual filings · Hover bar to view year data · Click to view original filing

Employees History

Filing Date	Period End	Employees	Change (1Y)	Growth (1Y)
2026-02-26	2025-12-31	14,600	-940	-6.05%
2025-02-25	2024-12-31	15,540	+20	+0.13%
2024-02-22	2023-12-31	15,520	-400	-2.51%
2023-02-22	2022-12-31	15,920	+1,370	+9.42%
2022-02-23	2021-12-31	14,550	+5,330	+57.81%
2021-02-24	2020-12-31	9,220	-210	-2.23%
2020-02-19	2019-12-31	9,430	+560	+6.31%
2019-02-20	2018-12-31	8,870	+70	+0.80%
2018-02-21	2017-12-31	8,800	-70	-0.79%
2017-02-22	2016-12-31	8,870	+4,645	+109.94%

▸ Source: SEC Annual Reports (Form 10-K / 20-F). Employee counts as of fiscal year end. Click the ↗ icon at the end of a row to open the original SEC filing in a new tab.

Related Companies — Employee Count

Chemicals - Specialty

#SymbolCompanyEmployeesMkt Cap

WLK

Westlake CorporationYOU

14,600$10.9B #2

EMN

Eastman Chemical Company

Axalta Coating Systems Ltd.

12,900$6.9B #5

ALB

Albemarle Corporation

8,300$17.6B #6

ESI

Element Solutions Inc

Source: /stock-peers + /profile.fullTimeEmployees · Click row → /employees · Sorted by headcount · WLK peer comparison

About WLK employees

WLK Employees · Headcount

Westlake Corporation (WLK) employee data is sourced from the annual SEC 10-K filing. As of 2025, Westlake Corporation had 14,600 full-time employees globally. Full-time employees only. Global consolidated headcount.

Westlake Corporation employs 14,600 full-time employees as of the latest filing within the Chemicals - Specialty industry. Revenue per employee stands at $765,068, reflecting the company's operational efficiency.

Westlake Corporation's workforce decreased by 940 (6.05%) in 2025 compared to the prior fiscal year. The historical trend reflects the company's expansion and contraction cycles.

Westlake Corporation's revenue per employee of $765,068 positions it among the notable performers in the Chemicals - Specialty sector for operational efficiency.

Revenue Financial statements Net income SEC filings Price history Forecast & ratings Ownership Earnings

Frequently Asked Questions

WLK Employees · 5 questions

As of the latest SEC 10-K filing (2025), Westlake Corporation had 14,600 full-time employees globally. This figure is sourced from the company's mandatory annual disclosure to the SEC.

Westlake Corporation employee counthow many employees does Westlake Corporation haveWLK total employees 2025

▸ Data source: FMP /historical-employee-count · SEC EDGAR annual filings · As reported · Global consolidated headcount · As of 2026-02-26