Vanacker Peter Z. E. 4

What Happened

• Peter Z. E. Vanacker, CEO of LyondellBasell (LYB), had restricted stock units (RSUs) vest on Feb 22–23, 2026. The issuer withheld a total of 17,165 shares to satisfy tax withholding obligations (6,063 shares on Feb 22 and 11,102 shares on Feb 23). The withheld shares were valued at about $343,590 (6,063 × $56.67) and $629,039 (11,102 × $56.66), respectively — roughly $972,629 in aggregate.
• These transactions are tax-withholding dispositions (transaction code F), not open-market sales or purchases. After withholding, the net shares delivered to Vanacker were the vested amounts minus withheld shares (15,406 vested on Feb 22 → 9,343 delivered; 28,211 vested on Feb 23 → 17,109 delivered).

Key Details

• Dates & prices: Feb 22, 2026 — 6,063 shares withheld at $56.67 ($343,590); Feb 23, 2026 — 11,102 shares withheld at $56.66 ($629,039).
• Total shares withheld: 17,165; total value withheld ≈ $972,629.
• RSU vesting noted: 15,406 RSUs vested Feb 22, 2026; 28,211 RSUs vested Feb 23, 2026.
• Footnotes: Filing lists additional RSU grants scheduled to vest through 2028 (see filing for grant-by-grant breakdown).
• Filing timeliness: Report filed Feb 24, 2026 for transactions on Feb 22–23 — appears timely (no late flag indicated).

Context

• These were routine RSU vestings where the company withheld shares to cover tax obligations (coded F). That is different from an open-market sale by the insider; withheld shares are part of the issuer’s tax-withholding mechanism and commonly occur on vesting.
• No purchase activity or 10b5-1 plan is indicated in this filing. The transactions do not, by themselves, indicate a change in the CEO’s longer-term ownership intent.