Westlake (WLK) Director Mark McCollum Receives 2,184 RSUs

What Happened
Mark A. McCollum, a director of Westlake Corp (WLK), was granted 2,184 restricted stock units (RSUs) on August 14, 2026. The grant is reported as a derivative acquisition (code A) at a $0.00 per-share acquisition price; no cash purchase or sale occurred. These RSUs will convert into common shares on a one-for-one basis when they vest.

Key Details

• Transaction date: 2026-08-14 — Grant of 2,184 RSUs (derivative), acquisition price reported as $0.00.
• Filing date: Form 4 filed 2026-08-17 (appears timely relative to the usual 2-business-day Form 4 requirement).
• Shares owned after transaction: Not specified in the reported filing.
• Footnotes: F1 — RSUs convert 1:1 into common stock. F2 — All RSUs vest on August 14, 2027.
• Transaction type: Award/compensation (not a market purchase or sale).

Context
RSU grants are a form of compensation for directors and typically vest over time; they do not represent an immediate purchase or sale of stock. Once the RSUs vest (2027-08-14), each unit will convert into one share of Westlake common stock; any subsequent sale or tax-related withholding would be reported separately. This report documents the award rather than active trading.