X0306 4 2019-02-20 false 0001489393 LyondellBasell Industries N.V. LYB 0001500293 Patel Bhavesh V. 4TH FLOOR ONE VINE STREET LONDON X0 W1J 0AH UNITED KINGDOM false true false false Chief Executive Officer Class A Ordinary Shares 2019-02-20 4 F false 16603.00 89.16 D 109382.00 D Class A Ordinary Shares 2019-02-20 4 A false 42192.00 89.16 A 151574.00 D Class A ordinary shares 130618.00 I By Family Trust Represents shares required to satisfy tax withholding obligations in connection with the vesting of 42,192 shares of performance-based stock granted to the Reporting Person on February 16, 2016. Includes 81,052 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 23,637 granted on January 12, 2015 that vest on January 12, 2020; 30,344 granted on February 16, 2017 that vest on February 16, 2020 and 27,071 granted on February 21, 2018 that vest on February 21, 2021. Represents shares earned in connection with the performance-based stock previously granted and unreportable on February 16, 2016 pursuant to the issuer's long-term incentive plan. Shares were earned based upon the level of attainment of certain performance objectives and continued employment. These shares fully vested on February 20, 2019 following certification by the Issuer's compensation committee. /s/ Lara A. Mason, Attorney-in-Fact 2019-02-22