X0306 4 2019-02-21 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 2019-02-21 4 A false 3443.00 0.00 A 17085.00 D Class A Ordinary Shares 2019-02-21 4 A false 3390.00 0.00 A 20475.00 D Stock Options (Right to Buy) 88.50 2019-02-21 4 A false 18867.00 0.00 A 2029-02-21 Class A Ordinary Shares 18867.00 18867.00 D Includes 7,877 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 2,126 granted on February 16, 2017 that vest on February 16, 2020 and 2,308 granted on February 21, 2018 that vest on February 21, 2021. The 3,443 RSUs reported on this Form 4 vest on February 21, 2022. Includes 11,267 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 2,126 granted on February 16, 2017 that vest on February 16, 2020; 2,308 granted on February 21, 2018 that vest on February 21, 2021 and 3,443 granted on February 21, 2019 that vest on February 21, 2022. The 3,390 RSUs reported on this Form 4 vest on February 21, 2022. 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 21, 2019. /s/ Lara A. Mason, Attorney-in-Fact 2019-02-25