X0306 4 2021-02-25 false 0001489393 LyondellBasell Industries N.V. LYB 0001735999 Smiley Jacinth C 4TH FLOOR ONE VINE STREET LONDON X0 W1J 0AH UNITED KINGDOM false true false false Chief Accounting Officer Class A Ordinary Shares 2021-02-25 4 A false 1477.00 0.00 A 7311.00 D Stock Options (Right to Buy) 104.41 2021-02-25 4 A false 5389.00 0.00 A 2031-02-25 Class A Ordinary Shares 5389.00 5389.00 D Includes 6,428 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 627 granted on April 2, 2018 that vest on April 2, 2021; 306 granted on April 2, 2018 that vest on April 2, 2021; 678 granted on February 21, 2019 that vest on February 21, 2022; 1,166 granted on July 18, 2019 that vest on July 18, 2021; 1,166 granted on July 18, 2019 that vest on July 18, 2022 and 1,008 granted on February 20, 2020 that vest on February 20, 2023. The 1,477 RSUs reported on this Form 4 vest on February 25, 2024. Granted pursuant to the issuer's long-term incentive plan. Award vests as follows: 1,797 vest February 25, 2022, 1,796 vest February 25, 2023 and 1,796 vest February 25, 2024. /s/ Lara A. Mason, Attorney-in-Fact 2021-03-01