X0306 4 2019-02-16 false 0001489393 LyondellBasell Industries N.V. LYB 0001642974 Coombs Daniel M 4TH FLOOR ONE VINE STREET LONDON X0 W1J 0AH UNITED KINGDOM false true false false EVP - Global O&P, Proc, Tech Class A Ordinary Shares 2019-02-16 4 F false 1041.00 87.64 D 19186.362 D Represents shares withheld by the issuer to satisfy tax withholding obligations in connection with the vesting 4,235 shares of restricted stock units granted to the reporting person on February 16, 2016. Includes 11,749 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 5,341 granted on February 16, 2017 that vest on February 16, 2020, 4,877 granted on February 21, 2018 that vest on February 21, 2021 and 1,531 granted on February 21, 2018 that vest on February 21, 2021. ESPP purchase of 200.416867 shares for $74.844 per share were allocated on December 31, 2018. /s/ Lara A. Mason, Attorney-in-Fact 2019-02-20