X0508 4 2025-05-22 false 0001489393 LyondellBasell Industries N.V. LYB 0001760238 Hanley Michael Sean 4TH FLOOR ONE VINE STREET LONDON X0 W1J 0AH UNITED KINGDOM true false false false false Class A Ordinary Shares 2025-05-22 4 A false 2917.00 0.00 A 22445.00 D Includes 4,609 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan, including 1,692 granted on May 23, 2024 that vested May 23, 2025. The 2,917 RSUs reported on this Form 4 vest on May 22, 2026. /s/ Lara A. Mason, Attorney-in-Fact 2025-05-27