X0306 4 2020-02-16 false 0001489393 LyondellBasell Industries N.V. LYB 0001783902 Seward James Malcolm 4TH FLOOR ONE VINE STREET LONDON X0 W1J 0AH UNITED KINGDOM false true false false SVP, R&D, Tech & Sustain. Class A Ordinary Shares 2020-02-16 4 F false 161.00 82.60 D 11813.00 D Represents shares withheld by the issuer to satisfy tax withholding obligations in connection with the vesting 464 shares of restricted stock units granted to the reporting person on February 16, 2017. Includes 3,073 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 472 granted on February 21, 2018 that vest on February 21, 2021; 1,740 granted on August 29, 2018 that vest on August 29, 2021; 651 granted on February 21, 2019 that vest on February 21, 2022 and 210 granted on August 15, 2019 that vest on August 15, 2022. /s/ Lara A. Mason, Attorney-in-Fact 2020-02-17