X0306 4 2021-02-21 false 0001489393 LyondellBasell Industries N.V. LYB 0001500293 Patel Bhavesh V. 4TH FLOOR ONE VINE STREET LONDON X0 W1J 0AH UNITED KINGDOM true true false false Chief Executive Officer Class A Ordinary Shares 2021-02-21 4 F false 9156.00 100.22 D 156233.00 D Class A Ordinary Shares 207375.00 I By Family Trust Represents shares withheld by the issuer to satisfy tax withholding obligations in connection with the vesting 27,071 shares of restricted stock units granted to the reporting person on February 21, 2018. Includes 70,213 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 34,782 granted on February 21, 2019 that vest on February 21, 2022 and 35,431 granted on February 20, 2020 that vest on February 20, 2023. Represents shares held by the reporting person's family trust. /s/ Lara A. Mason, Attorney-in-Fact 2021-02-22