X0306 4 2019-02-21 false 0001489393 LyondellBasell Industries N.V. LYB 0001697502 Augustowski Paul A 4TH FLOOR ONE VINE STREET LONDON X0 W1J 0AH UNITED KINGDOM false true false false SVP, O&P - Americas Class A Ordinary Shares 2019-02-21 4 A false 1715.00 0.00 A 15719.00 D Stock Options (Right to Buy) 88.50 2019-02-21 4 A false 9394.00 0.00 A 2029-02-21 Class A Ordinary Shares 9394.00 9394.00 D Includes 4,265 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 1,271 granted on February 16, 2017 that vest on February 16, 2020 and 1,279 granted on February 21, 2018 that vest on February 21, 2021. The 1,715 RSUs reported on this Form 4 vest on February 21, 2022. Granted pursuant to the issuer's long-term incentive plan. Award vests as follows: 3,132 vest on February 21, 2020, 3,131 vest on February 21, 2021 and 3,131 vest on February 21, 2022. /s/ Lara A. Mason, Attorney-in-Fact 2019-02-25