Albert Chao

CIK 1299403 · Executive Chairman · last filed 2026-02-23

Albert Chao is an Executive Chairman who has filed 91 SEC Form 4 insider transactions across 2 companies since 2007. The most recent filing, for WLK, was dated Feb 23, 2026. Across all open-market trades the lifetime net is −$49.4M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $8.33B across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$8.33B

Companies

2

Total Filings

91

Lifetime Open-Market Net

-$49.38M

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
WLK Executive Chairman 94,048,434 $88.50 $8.32B -$54.32M 72 2026-02-23
WLKP President & CEO 193,710 $23.33 $4.52M $4.94M 19 2020-03-25

Recent Filings

91 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2026-02-23 WLK Mixed +3,692 -$235.3K EDGAR
2026-02-19 WLK Mixed +11,466 -$503.6K EDGAR
2025-12-23 WLK Mixed +40,837 $623.5K EDGAR
2025-02-24 WLK Mixed +20,066 -$1.48M EDGAR
2025-02-20 WLK Mixed +11,903 -$676.8K EDGAR
2024-08-19 WLK Mixed -$3.56M EDGAR
2024-02-21 WLK Mixed +34,768 -$3.24M EDGAR
2024-02-20 WLK Grant (A) $0 EDGAR
2023-09-01 WLK Mixed -$1.35M EDGAR
2023-08-31 WLK Mixed -$1.40M EDGAR
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Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.