X0306 4 2019-02-21 false 0001489393 LyondellBasell Industries N.V. LYB 0001634184 Kaplan Jeffrey A 4TH FLOOR ONE VINE STREET LONDON X0 W1J 0AH UNITED KINGDOM false true false false EVP & Chief Legal Officer Class A Ordinary Shares 2019-02-21 4 A false 4306.00 0.00 A 32275.00 D Stock Options (Right to Buy) 88.50 2019-02-21 4 A false 23592.00 0.00 A 2029-02-21 Class A Ordinary Shares 23592.00 23592.00 D Includes 13,629 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan including 3,324 granted on February 16, 2017 that vest on February 16, 2020; 3,248 granted on February 21, 2018 that vest on February 21, 2021 and 2,751 granted on February 21, 2018 that vest on February 21, 2021. The 4,306 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