Westlake director exercises 2,168 stock units
Westlake Corp director Catherine T. Chao reported the vesting and exercise of 2,168 Restricted Stock Units into 2,168 shares of common stock on August 8, 2026.
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Form Type
4
Rhea-AI Filing Summary
Westlake Corp director Catherine T. Chao reported the vesting and exercise of 2,168 Restricted Stock Units into 2,168 shares of common stock on August 8, 2026. Following this, she holds 7,748 common shares directly and 19,423 common shares indirectly through a trust for her benefit.
Insider Trade Summary
2,168 shares exercised/converted
Exercise
3 txns
Insider
Chao Catherine T.
Role
Director
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Restricted Stock Units F1, F3 | 2,168 | $0.00 | $0.00 |
| Exercise | Common Stock F1 | 2,168 | -- | -- |
| holding | Common Stock F2 | -- | -- | -- |
Holdings After Transaction:
Restricted Stock Units — 2,168 contracts (Direct);
Common Stock — 7,748 shares (Direct);
Common Stock — 19,423 shares (Indirect, by Trust)
Footnotes (3)
- F1. Restricted stock units convert into the Issuer's common stock on a one-for-one basis.
- F2. These shares are held in a trust for the benefit of the reporting person, who also serves as sole trustee.
- F3. On August 8, 2025 the reporting person was granted 2,168 restricted stock units vesting on the first anniversary of the grant date.
Key Figures
Restricted Stock Units Exercised: 2,168 units
Common Shares Acquired from RSUs: 2,168 shares
Direct Common Shares After Transaction: 7,748 shares
+3 more
6 metrics
Restricted Stock Units Exercised
2,168 units
RSUs converted into common stock on August 8, 2026
Common Shares Acquired from RSUs
2,168 shares
Common stock received upon RSU conversion
Direct Common Shares After Transaction
7,748 shares
Direct ownership following RSU conversion
Indirect Common Shares in Trust
19,423 shares
Indirect ownership held by trust for reporting person’s benefit
Derivative Exercises Reported
1 transaction
Exercise or conversion of derivative security (RSUs)
RSU Conversion Ratio
1-for-1
Restricted stock units convert into common stock on a one-for-one basis
Key Terms
Restricted Stock Units, derivative security, indirect ownership, trust
4 terms
Restricted Stock Units financial
"Restricted stock units convert into the Issuer's common stock on a one-for-one basis"
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
derivative security financial
"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.
indirect ownership financial
"These shares are held in a trust for the benefit of the reporting person"
trust financial
"These shares are held in a trust for the benefit of the reporting person"
A trust is a legal setup in which one party (the trustee) holds and manages assets—like cash, stocks or property—on behalf of other people (beneficiaries) according to instructions from the person who created it (the grantor). Think of it as a locked box with a keyholder who must follow written rules; for investors it matters because trusts influence who controls and benefits from assets, affect taxes and succession, and can change how quickly or transparently shares are bought, sold or voted.
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What transaction did Westlake Corp (WLK) director Catherine T. Chao report?
Catherine T. Chao reported the vesting and exercise of 2,168 Restricted Stock Units into 2,168 shares of Westlake Corp common stock on August 8, 2026, as shown in the Form 4 filing.
What are Catherine T. Chao’s direct and indirect WLK holdings after the reported transactions?
After the transactions, she holds 7,748 shares of Westlake Corp common stock directly and 19,423 shares indirectly in a trust for her benefit, where she serves as sole trustee.
Were the reported Westlake Corp (WLK) transactions under a Rule 10b5-1 plan?
The Form 4 indicates the Rule 10b5-1 trading plan checkbox is not affirmed (set to false), so the filing does not state that these transactions occurred pursuant to a Rule 10b5-1 plan.
What do the Restricted Stock Units in the WLK Form 4 convert into?
The Restricted Stock Units convert into Westlake Corp common stock on a one-for-one basis. In this filing, 2,168 RSUs converted into 2,168 common shares upon vesting and exercise.
AI-generated analysis. How Rhea-AI works. Not financial advice.
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