WLK
Ticker
Westlake Corporation
WLK · Basic Materials · Westlake Corporation manufactures and markets performance and essential materials, and housing and infrastructure products in the United St…Westlake Corporation (WLK), in the Basic Materials sector, has 5 disclosed filings on Paydirt over the trailing twelve months from 3 corporate insiders: 0 purchases and 5 sales. Filers took a median of 3 days from execution to disclosure, and the most recent trade was executed Aug 11 and filed Aug 11. The most active filer was Mark Steven Bender with 2 filings.
Add to watchlistFilings, ttm
5
0 buys · 5 sells
Traders, ttm
3
3 insiders
Volume, ttmiDollar value disclosed in the window
$10.1M
estimated for Congress, as filed for insiders
Median delay
3d
execution to disclosure
Last traded
Aug 11
Filed Aug 11
ADViAverage daily dollar volume
$87.7M
market data
Share price · 12M
$75.92 (-4.7%)
Adjusted for splits and dividends.
Volume by month
Buys $0
Sells $10.6M
Estimated for Congress, as filed for insiders · by filing month · past 24 months
Who filed
MBRecent filings
Albert ChaoSALE
Executive Chairman
$3.1M38,873 sh across 2 lots
Exec Aug 11
Filed Aug 11 · 5:45 PM ET Robert F. BuesingerSALE EVP, PEM Segment Head $461K
4,000 sh × $115.25
Exec Mar 27
Filed Mar 31 · 5:30 PM ET Mark Steven BenderSALE EVP & CFO $1.8M
16,413 sh × $112.54
Exec Mar 27
Filed Mar 30 · 5:30 PM ET Mark Steven BenderSALE EVP & CFO $1.7M
16,988 sh × $100.91
Exec Feb 27
Filed Mar 2 · 5:30 PM ET Albert ChaoSALE Executive Chairman $3.0M
40,315 sh across 2 lots
Exec Dec 22 2025
Filed Dec 23 2025 · 5:30 PM ET David Tsung-Hung ChaoSALE Director $226K
1,750 sh × $129.08
Exec Nov 29 2024
Filed Dec 2 2024 · 5:30 PM ET David Tsung-Hung ChaoSALE Director $228K
1,750 sh × $130.00
Exec Nov 22 2024
Filed Nov 25 2024 · 5:30 PM ET