X0306 4 2019-11-30 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 Class A Ordinary Shares 2019-11-30 4 F false 126.00 92.54 D 3447.00 D Represents shares withheld by the issuer to satisfy tax withholding obligations in connection with the vesting 914 shares of restricted stock units granted to the reporting person on November 30, 2018. Includes restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan, including 2,197 granted on May 30, 2019 that vest on May 30, 2020. /s/ Lara A. Mason, Attorney-in-Fact 2019-12-03