Insider filing · WLK
Albert Chao
Executive Chairman
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Westlake Corporation
WLK · Basic Materials · 7 filings in 24 months
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Albert Chao sold $3.0M of Westlake (WLK)
Executed Dec 22 2025, disclosed Dec 23 2025, 1 day later.
Value, as filed
$3.0M
40,315 sh across 2 lots
Executed
Dec 22 2025
the trade date, as filed
Disclosed
Dec 23 2025
1 day after the trade
Return, 21 sessionsiFrom the disclosed entry session; derived
–
purchases only
Returns are measured on stock purchases only.
The filer
ACAlbert Chao (Executive Chairman) filed 2 Form 4 reports in the trailing twelve months (0 purchases, 2 sales), most often in Westlake Corporation (WLK). The largest single filing was $3.1M of WLK (38,873 sh across 2 lots, as filed), executed Aug 11.
The name
WLKBasic Materials · Westlake Corporation manufactures and markets performance and essential materials, and housing and infrastructure products in the United St…
More Basic Materials filings→ Insider filings, newest first→ View the original filing at www.sec.gov→Other filings by Albert Chao in WLK
WLKSALE
Westlake Corporation
$3.1M38,873 sh across 2 lots
Exec Aug 11
Filed Aug 11 · 5:45 PM ET