X0306 4 2018-01-01 false 0001489393 LyondellBasell Industries N.V. LYB 0001662213 Aebischer Thomas 4TH FLOOR ONE VINE STREET LONDON X0 W1J 0AH UNITED KINGDOM false true false false EVP & CFO Class A Ordinary Shares 2018-01-01 4 F false 987.00 110.32 D 22015.00 D Includes 16,674 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 3,452 granted on January 1, 2016 that vest on January 1, 2019, 6,978 granted on February 16, 2016 that vest on February 16, 2019 and 6,244 granted on February 16, 2017 that vest on February 16, 2020. /s/ Lara A. Mason, Attorney-in-Fact 2018-01-03