Westlake Corporation (WLK)
Westlake Corporation at a glance — key fundamentals, SEC filings, insider buying and selling, and earnings dates.
Westlake Corporation (WLK) is a Chemicals - Specialty company based in US with a market capitalization of $11.1B. Revenue declined 8.0% year-over-year and free cash flow was negative at -$530M. This page tracks WLK's SEC filings, insider buying and selling, earnings dates, and key fundamentals in one place.
US · 15.54K employees · IPO Aug 12, 2004
Valuation
Valuation & price
$88.59as of May 17, 2026· -28.2% vs 52w high
—
P/E ratio
Latest-FY diluted EPS
1.26
P/B ratio
Market cap ÷ book equity
—
Dividend yield
Price — last 12 months
Fundamentals
Key fundamentals
$11.1B
Market cap
-8.0%
Revenue growth (YoY)
2.6%
Gross margin
-$530M
Free cash flow (USD)
$3.5B
Net debt
0.3%
Share dilution
2/5
Graham criteria passed
Defensive-investor screen
Basic Materials
Sector
Trajectory
Long-term trends
Revenue by year
2016 → 2025
Free cash flow by year
2016 → 2025
Gross margin by year
2021 → 2025
Value screen
Graham defensive-investor tests
0
Insider buys · 90 days
0
Insider sells · 90 days
Earnings
Last report: 10-Q filed May 6, 2026
Next expected: not yet scheduled
On the tape
Recent SEC & insider activity
- 8-K eventJun 15, 2026Filing
Acquisition Completed
- 8-K eventMay 18, 2026Filing
Annual Meeting Results
- Quarterly reportMay 6, 2026Filing
10-Q Filed
- 8-K eventMay 5, 2026Filing
Earnings Release
- 8-K eventMay 1, 2026Filing
Acquisition Announced
- 8-K eventApr 20, 2026Filing
CFO Appointment
- 8-K eventApr 14, 2026Filing
Settlement Agreement
- 8-K eventApr 6, 2026Filing
Credit Agreement Executed
- 8-K eventApr 2, 2026Filing
Executive Transition
Questions
Frequently asked questions
What is Westlake Corporation's market cap?
Westlake Corporation (WLK) has a market capitalization of $11.1B.
What is WLK's P/E ratio?
A meaningful P/E ratio is not available for WLK — the company's latest fiscal-year earnings per share is zero, negative, or not yet cached.
What is WLK's price-to-book (P/B) ratio?
WLK trades at 1.26 times book value per share.
Are insiders buying WLK stock?
SEC Form 4 filings show no open-market insider buys at Westlake Corporation in the last 90 days (0 sells).
Same arena
Related companies in Chemicals - Specialty
Timeline
Every filing, insider trade & earnings on a price-anchored timeline
Filing Analyzer
Search the actual 10-K / 10-Q text with AI research angles
News
Latest press coverage in one feed
Data: SEC EDGAR filings and cached fundamental data; prices and ratios use the most recent cached quote and statements (may lag by up to a day). Educational and research purposes only. Not investment advice.