X0508 4 2025-02-22 false 0001489393 LyondellBasell Industries N.V. LYB 0001626994 Oyolu Chukwuemeka A. 4TH FLOOR ONE VINE STREET LONDON X0 W1J 0AH UNITED KINGDOM false true false false SVP, CAO & Investor Relations false Class A Ordinary Shares 2025-02-22 4 F false 437.00 76.96 D 28071.00 D Class A Ordinary Shares 2025-02-24 4 F false 655.00 77.31 D 27416.00 D Represents shares withheld by the issuer to satisfy tax withholding obligations in connection with the vesting 1,585 shares of restricted stock units granted to the reporting person on February 22, 2024. Includes 12,015 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 2,687 granted on February 24, 2022 that vest on February 24, 2025; 2,802 granted on February 23, 2023 that vest on February 23, 2026; 4,751 granted on February 22, 2024 of which 1,585 vested on February 22, 2025, 1,583 vest on February 22, 2026, 1,583 vest on February 22, 2027 and 3,360 granted on December 15, 2024 of which 1,680 vest on December 15, 2025 and 1,680 vest on December 15, 2026. Represents shares withheld by the issuer to satisfy tax withholding obligations in connection with the vesting 2,687 shares of restricted stock units granted to the reporting person on February 24, 2022. Includes 9,328 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 2,802 granted on February 23, 2023 that vest on February 23, 2026; 4,751 granted on February 22, 2024 of which 1,585 vested on February 22, 2025, 1,583 vest on February 22, 2026, 1,583 vest on February 22, 2027 and 3,360 granted on December 15, 2024 of which 1,680 vest on December 15, 2025 and 1,680 vest on December 15, 2026. /s/ Lara A. Mason, Attorney-in-Fact 2025-02-25