AC
Insider
Albert Chao
Executive ChairmanAlbert 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.
Add to watchlistReturn, ttmiAverage return per filing, trailing twelve months
–
no purchases on file
Delay-adjustediThe same average, entered at disclosure dates
–
returns measure stock purchases only
Filings, ttm
2
0 buys · 2 sells
Median delay
–
execution → disclosure
Volume, ttmiDollar value disclosed in the trailing twelve months
$6.1M
shares × price, as filed
Last traded
Aug 11
Filed Aug 11
Median ADV $87.7M across their filed names
Open performance→Volume by month
Buys $0
Sells $6.1M
Shares × price, as filed · by filing month · past 24 months
Sectors filed on
Basic Materials
2 filings
Sector per market data · by filing · past 12 months
Most traded names
WLKRecent filings
WLKSALE
Westlake Corporation
View filing →
$3.1M38,873 sh across 2 lots
Exec Aug 11
Filed Aug 11 · 5:45 PM ET WLKSALE Westlake Corporation View filing → $3.0M
40,315 sh across 2 lots
Exec Dec 22 2025
Filed Dec 23 2025 · 5:30 PM ET