Westlake Corp (WLK) director adds 2,168 shares as RSUs vest and convert
Rhea-AI Filing Summary
Westlake Corp director Mark A. McCollum reported the vesting and conversion of 2,168 restricted stock units into an equal number of shares of common stock on August 8, 2026. The restricted stock units converted to common stock on a one-for-one basis and were originally granted on August 8, 2025, vesting on the first anniversary of the grant date. Following this transaction, McCollum directly holds 11,824 shares of Westlake common stock.
Positive
- None.
Negative
- None.
Insider Trade Summary
Net Buyer: 2,168 shares
Net Buy
2 txns
Insider
MCCOLLUM MARK A
Role
Director
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Restricted Stock Units F1, F2 | 2,168 | $0.00 | $0.00 |
| Exercise | Common Stock F1 | 2,168 | -- | -- |
Holdings After Transaction:
Restricted Stock Units — 2,168 shares (Direct);
Common Stock — 11,824 shares (Direct)
Footnotes (2)
- F1. Restricted stock units convert into the Issuer's common stock on a one-for-one basis.
- F2. 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 converted: 2,168 units
Common shares acquired: 2,168 shares
Shares held after transaction: 11,824 shares
+1 more
4 metrics
Restricted stock units converted
2,168 units
RSUs converted into common stock on August 8, 2026, one-for-one basis
Common shares acquired
2,168 shares
Shares of common stock received upon RSU conversion
Shares held after transaction
11,824 shares
Direct common stock ownership by Mark A. McCollum following the transactions
RSU grant date
August 8, 2025
Grant of 2,168 restricted stock units vesting on first anniversary
Key Terms
Restricted Stock Units, derivative security, vest
3 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.
vest financial
"restricted stock units vesting on the first anniversary of the grant date"
A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.
AI-generated analysis. How Rhea-AI works. Not financial advice.
FAQ
What insider transaction did Westlake Corp (WLK) report for Mark A. McCollum?
Westlake Corp reported that director Mark A. McCollum had 2,168 restricted stock units vest and convert into 2,168 shares of common stock on August 8, 2026, under an equity award originally granted in 2025.
What happened to the 2,168 restricted stock units in Westlake Corp (WLK)'s Form 4?
The 2,168 restricted stock units were exercised/converted into 2,168 shares of common stock on August 8, 2026. The derivative position was disposed of as the units converted on a one-for-one basis into common shares.
When were the restricted stock units in Westlake Corp (WLK) originally granted to Mark A. McCollum?
The filing states that on August 8, 2025, Mark A. McCollum was granted 2,168 restricted stock units, which vested on the first anniversary of the grant date, leading to their conversion into common stock in August 2026.
Were the Westlake Corp (WLK) insider transactions under a Rule 10b5-1 plan?
The Form 4 indicates the Rule 10b5-1 checkbox is not affirmed (set to false). The disclosure does not state that these transactions were executed pursuant to a Rule 10b5-1 trading plan.