Ederington L. Benjamin 4

What Happened
Ederington L. Benjamin, Executive Vice President, Legal & External Affairs of Westlake Corporation (WLK), had performance stock units (PSUs) vest and received additional derivative awards. On Feb 19, 2026, 1,425 shares vested from PSUs (no cash cost). To satisfy tax obligations arising from that vesting, 357 shares were withheld/sold on Feb 20, 2026, generating approximately $33,594 (weighted-average price reported at $94.10; sales occurred in a range of $94.10–94.38). Also on Feb 20, 2026 the filing shows derivative awards totaling 32,658 units (25,656 and 7,002) granted at $0.00 (these are stock option and RSU-type awards per footnotes).

Key Details

• Transaction dates: vested PSUs on 2026-02-19; withholding/sale and new awards reported 2026-02-20; Form 4 filed 2026-02-23 (appears timely).
• Sale/withholding: 357 shares disposed, weighted-average price $94.10, proceeds ≈ $33,594; sale prices ranged $94.10–94.38 (filing can provide per-price breakdown on request).
• Acquisitions: 1,425 vested shares (PSUs); 25,656 derivative units (stock option-type award); 7,002 derivative units (RSU-type award) — all reported at $0.00 acquisition price.
• Shares owned after transaction: not specified in the provided filing summary.
• Notable footnotes:
  • F1: 1,425 shares vested Feb 19, 2026 upon satisfaction of performance criteria (PSUs granted Feb 17, 2023).
  • F2/F3: Shares otherwise issuable were withheld/sold to satisfy taxes; multiple sale prices in the $94.10–94.38 range.
  • F4: The stock options (if applicable) vest/exercise in three installments (Feb 20 of 2027, 2028, 2029).
  • F5/F6: RSUs represent rights to receive shares; RSUs vest on Feb 20, 2029.
• Filing timeliness: Form 4 was filed Feb 23, 2026 for transactions on Feb 19–20, 2026 — within the typical two-business-day reporting window.

Context
This was largely an award/vesting event (PSUs vesting and new option/RSU grants) with a routine sell/withhold to cover tax obligations (often called sell-to-cover). Such withholding/sales are administrative and do not by themselves signal insider buying or selling for investment reasons. The larger derivative grants (options and RSUs) have future vesting/exercise schedules noted above.