AIGRAIN JACQUES 4

What Happened
Jacques Aigrain, a director of LyondellBasell Industries N.V. (LYB), was granted restricted stock units (RSUs) and experienced routine tax-withholding on vested RSUs. The Form 4 reports a grant/acquisition of 4,437 RSUs on 2026-05-21 (reported at $0.00 value) and a tax-withholding disposition on 2026-05-22 where 575 shares were withheld at $69.72 per share, totaling $40,089. The filing notes a larger 10,014-RSU award package that included 5,577 RSUs that vested on 2026-05-22; the 4,437 RSUs vest on 2027-05-21.

Key Details

• Transaction types: A = Award/Grant (4,437 RSUs on 2026-05-21); F = Tax withholding (575 shares withheld on 2026-05-22).
• Prices/values: RSUs granted reported at $0.00; 575 shares withheld at $69.72 each = $40,089 withheld to satisfy tax obligations.
• Grant/vesting schedule: Total grant referenced = 10,014 RSUs; 5,577 vested 2026-05-22 (triggering withholding); 4,437 RSUs vest 2027-05-21.
• Shares owned after transaction: not specified in the Form 4 filing.
• Filing timeliness: Form 4 filed 2026-05-26 reporting 2026-05-21/22 activity; no late-filing notation is indicated in the provided filing.

Context
This was a compensation-related grant and routine tax-withholding on vested RSUs—not an open-market buy or sale that signals the insider taking a directional market position. Tax-withholding (code F) is common when RSUs vest and reduces shares delivered to the insider. The 4,437 RSUs are future-vesting (2027) and do not represent an immediate sale or purchase.