Westlake’s Albert Chao exercises options, sells shares
Westlake Corp Executive Chairman Albert Chao reported an option exercise and related stock sales.
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Form Type
4
Rhea-AI Filing Summary
Westlake Corp Executive Chairman Albert Chao reported an option exercise and related stock sales. He exercised employee stock options for 38,873 shares of common stock at an exercise price of $61.865 per share, then sold 7,489 shares at $79.70 and 31,384 shares at $80.42 per share in open-market transactions on August 11, 2026. The sold shares were executed at weighted average prices within disclosed price ranges.
Insider Trade Summary
Exercise and Sale: 38,873 shares ($716K approx. pre-tax spread)
Exercise and Sale
4 txns
Insider
Chao Albert
Role
Executive Chairman
Sold
38,873 shs ($3.12M)
Approx. gross sale proceeds
$3.12M
Approx. exercise cost
$2.40M
Approx. pre-tax spread
$716K
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Employee Option (right to buy) F3 | 38,873 | $0.00 | $0.00 |
| Exercise | Common Stock | 38,873 | $61.865 | $2.40M |
| Sale | Common Stock F1 | 7,489 | $79.70 | $597K |
| Sale | Common Stock F2 | 31,384 | $80.42 | $2.52M |
Holdings After Transaction:
Employee Option (right to buy) — 38,873 contracts (Direct);
Common Stock — 642,880 shares (Direct)
Footnotes (3)
- F1. Weighted average price. These shares were sold in multiple transactions ranging from $79.02 to $80.01 inclusive. The reporting person undertakes to provide the issuer, any security holder of the issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.
- F2. Weighted average price. These shares were sold in multiple transactions ranging from $80.10 to $80.86 inclusive. The reporting person undertakes to provide the issuer, any security holder of the issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.
- F3. The stock options are exercisable in three installments of 33%, 33% and 34% on February 17, 2018, 2019 and 2020, respectively.
Key Figures
Options exercised: 38,873 shares
Option exercise price: $61.865 per share
Shares sold at $79.70: 7,489 shares
+3 more
6 metrics
Options exercised
38,873 shares
Employee options for Westlake Corp common stock exercised on August 11, 2026
Option exercise price
$61.865 per share
Exercise price of Employee Option (right to buy) for 38,873 shares
Shares sold at $79.70
7,489 shares
Open-market sale at weighted average price of $79.70 per share
Shares sold at $80.42
31,384 shares
Open-market sale at weighted average price of $80.42 per share
Total shares sold
38,873 shares
Combined total of common stock sold in two transactions on August 11, 2026
Option expiration date
February 17, 2027
Expiration date of Employee Option if not exercised
Key Terms
Employee Option (right to buy), weighted average price, derivative security
3 terms
Employee Option (right to buy) financial
"security_title: "Employee Option (right to buy)""
weighted average price financial
"Weighted average price. These shares were sold in multiple transactions"
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
derivative security financial
"transaction_code_description: "Exercise or conversion of derivative security""
A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What did Westlake Corp (WLK) Executive Chairman Albert Chao report in this Form 4?
Albert Chao reported exercising 38,873 employee stock options at $61.865 per share and selling the resulting 38,873 common shares in open-market transactions on August 11, 2026 at prices around $80 per share.
How many Westlake Corp (WLK) options did Albert Chao exercise and at what price?
He exercised 38,873 employee stock options for Westlake Corp common stock at an exercise price of $61.865 per share. These options, originally vesting in three installments, were scheduled to expire on February 17, 2027 if unexercised.
Were Albert Chao’s Westlake Corp (WLK) stock sales made at weighted average prices?
Yes. The filing states both sale blocks used a weighted average price. The 7,489 shares were sold between $79.02–$80.01, and the 31,384 shares between $80.10–$80.86, with full trade details available upon request.
What type of derivative security did Albert Chao exercise at Westlake Corp (WLK)?
He exercised an Employee Option (right to buy) covering 38,873 shares of Westlake Corp common stock. The options were exercisable in three installments of 33%, 33% and 34% and carried a per-share exercise price of $61.865.
AI-generated analysis. How Rhea-AI works. Not financial advice.
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