X0306 4 2020-02-20 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 2020-02-20 4 A false 1198.00 0.00 A 13321.00 D Stock Options (Right to Buy) 83.35 2020-02-20 4 A false 8184.00 0.00 A 2030-02-20 Class A Ordinary Shares 8184.00 8184.00 D Includes 4,271 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. The 1,198 RSUs reported on this Form 4 vest on February 20, 2023. 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 20, 2020. /s/ Lara A. Mason, Attorney-in-Fact 2020-02-24