X0306 4 2019-02-16 false 0001489393 LyondellBasell Industries N.V. LYB 0001649570 Guilfoyle James D 4TH FLOOR ONE VINE STREET LONDON X0 W1J 0AH UNITED KINGDOM false true false false SVP, Global I&D, Supply Chain Class A Ordinary Shares 2019-02-16 4 F false 383.00 87.64 D 11850.00 D Represents shares withheld by the issuer to satisfy tax withholding obligations in connection with the vesting 1,461 shares of restricted stock units granted to the reporting person on February 16, 2016. Includes 4,434 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 2,126 granted on February 16, 2017 that vest on February 16, 2020 and 2,308 granted on February 21, 2018 that vest on February 21, 2021. /s/ Lara A. Mason, Attorney-in-Fact 2019-02-20