X0508 4 2024-02-21 false 0001489393 LyondellBasell Industries N.V. LYB 0001783902 Seward James Malcolm 4TH FLOOR ONE VINE STREET LONDON X0 W1J 0AH UNITED KINGDOM false true false false EVP & Chief Innovation Officer false Class A Ordinary Shares 2024-02-21 4 F false 2838.00 97.38 D 34542.00 D Class A Ordinary Shares 2024-02-21 4 F false 577.00 97.38 D 33965.00 D Class A Ordinary Shares 2024-02-21 4 A false 5732.00 97.38 A 39697.00 D Class A Ordinary Shares 2024-02-21 4 A false 1164.00 97.38 A 40861.00 D Represents shares required to satisfy tax withholding obligations in connection with the vesting of 5,732 shares of performance-based stock units granted to the Reporting Person on February 25, 2021. Includes 6,008 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 1,433 granted on February 25, 2021 that vest on February 25, 2024; 1,768 granted on February 24, 2022 that vest on February 24, 2025; 168 granted on October 15, 2022 that vest on October 15, 2025 and 2,639 granted on February 23, 2023 that vest on February 23, 2026. Represents shares required to satisfy tax withholding obligations for dividend equivalents accrued of 1,164 shares in connection with performance-based stock units granted to the Reporting Person on February 25, 2021. Represents shares earned in connection with the performance-based stock units previously granted and unreportable on February 25, 2021 pursuant to the issuer's long-term incentive plan. Shares were earned based upon the level of attainment of certain performance objectives and continued employment. These shares fully vested on February 21, 2024 following certification by the Issuer's Compensation & Talent Development Committee. Represents shares from the settlement of dividend equivalents that accrued on the performance-based stock units prior to vesting. /s/ Lara A. Mason, Attorney-in-Fact 2024-02-23