Chao John Tsung-chen 4
4 · WESTLAKE CORP · Filed Feb 23, 2026
Research Summary
AI-generated summary of this filing
Westlake (WLK) Director John Chao Receives Awards, Sells 91 Shares
What Happened
John Tsung‑chen Chao, a director of Westlake Corp (WLK), had performance stock units (PSUs) vest and received several derivative equity awards. On Feb 19, 2026, 213 PSUs vested. To cover tax obligations arising from that vesting, 91 shares were withheld/disposed on Feb 20, 2026 at $94.10 per share for proceeds of $8,563. Separately on Feb 20, 2026 the filing shows additional equity awards/derivative grants of 4,044, 1,104 and 2,434 units (awarded at $0).
Key Details
- Transaction dates: PSUs vested 2026-02-19; tax-withholding / share disposition and additional awards reported 2026-02-20. Form filed 2026-02-23 (timely).
- Sale/withholding: 91 shares withheld/disposed at $94.10 each = $8,563.
- Vested award: 213 PSUs vested (per footnote F1). Shares otherwise issuable from that vesting were withheld to satisfy taxes (F2).
- Additional awards (derivative): 4,044; 1,104; and 2,434 units granted on 2026-02-20 (awarded at $0). Footnotes indicate some awards are RSUs (each RSU = 1 share) that vest on 2029-02-20 (F4, F5), and some awards/options have staged exercisability (F3).
- Shares owned after the transactions: not specified in the provided filing summary.
- Filing timeliness: Form 4 filed 2026-02-23 — within the required reporting window (timely).
Context
- The 91-share disposition is a routine tax-withholding event tied to PSU vesting (not a typical open-market sale indicating a change in sentiment).
- The filing shows both vested PSUs and newly granted derivative awards (RSUs/options) with future vesting/exercise schedules; RSUs generally convert to shares only upon vesting (here, many RSUs vest in 2029).
- For retail investors, awards and withholding are common compensation mechanics; purchases are generally more indicative of bullish insider conviction than routine vesting/withholding.
Insider Transaction Report
Form 4
Chao John Tsung-chen
Director
Transactions
- Award
Common Stock
[F1]2026-02-19+213→ 7,979 total - Tax Payment
Common Stock
[F2]2026-02-20$94.10/sh−91$8,563→ 7,888 total - Award
Employee Option (right to buy)
[F3]2026-02-20+4,044→ 4,044 totalExercise: $94.48Exp: 2036-02-20→ Common Stock (4,044 underlying) - Award
Restricted Stock Units
[F4][F5]2026-02-20+1,104→ 1,104 total→ Common Stock (1,104 underlying) - Award
Restricted Stock Units
[F4][F5]2026-02-20+2,434→ 2,434 total→ Common Stock (2,434 underlying)
Footnotes (5)
- [F1]Represents shares of common stock that vested on February 19, 2026, upon the determination by the Compensation Committee of the Issuer's Board of Directors of the satisfaction of performance criteria underlying an award of performance stock units ("PSUs") granted to the Reporting Person on February 17, 2023, under the terms of the Issuer's 2013 Omnibus Incentive Plan.
- [F2]Shares otherwise issuable were witheld to satisfy tax obligations arising out of vesting of the Reporting Person's PSUs.
- [F3]The stock options are excercisable in three installments of 33%, 33% and 34% on February 20, 2027, 2028 and 2029, respectively.
- [F4]Each restricted stock unit ("RSU") represents a contingent right to recieve one share of the Issuer's common stock.
- [F5]All of the RSUs will vest on February 20, 2029.
Signature
John T. Chao by J. Feng, POA|2026-02-23