X0306 4 2019-02-16 false 0001489393 LyondellBasell Industries N.V. LYB 0001634184 Kaplan Jeffrey A 4TH FLOOR ONE VINE STREET LONDON X0 W1J 0AH UNITED KINGDOM false true false false EVP & Chief Legal Officer Class A Ordinary Shares 2019-02-16 4 F false 813.00 87.64 D 23965.00 D Represents shares withheld by the issuer to satisfy tax withholding obligations in connection with the vesting 3,268 shares of restricted stock units granted to the reporting person on February 16, 2016. Includes 9,323 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan including 3,324 granted on February 16, 2017 that vest on February 16, 2020; 3,248 granted on February 21, 2018 that vest on February 21, 2021 and 2,751 granted on February 21, 2018 that vest on February 21, 2021. /s/ Lara A. Mason, Attorney-in-Fact 2019-02-20