X0306 4 2021-02-25 false 0001489393 LyondellBasell Industries N.V. LYB 0001649570 Guilfoyle James D 4TH FLOOR ONE VINE STREET LONDON X0 W1J 0AH UNITED KINGDOM false true false false EVP, Adv Polymer Sol & Sup Chn Class A Ordinary Shares 2021-02-25 4 A false 5188.00 0.00 A 31408.65 D Stock Options (Right to Buy) 104.41 2021-02-25 4 A false 27102.00 0.00 A 2031-02-25 Class A Ordinary Shares 27102.00 27102.00 D Includes 16,386 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 3,443 granted on February 21, 2019 that vest on February 21, 2022; 3,390 granted on February 21, 2019 that vest on February 21, 2022 and 4,365 granted on February 20, 2020 that vest on February 20, 2023. The 5,188 RSUs reported on this Form 4 vest on February 25, 2024. Granted pursuant to the issuer's long-term incentive plan. Award vests in three equal installments on the 1st, 2nd and 3rd anniversaries of the date of grant of February 25, 2021. /s/ Lara A. Mason, Attorney-in-Fact 2021-03-01