X0306 4 2018-02-12 false 0001489393 LyondellBasell Industries N.V. LYB 0001641335 Roudeix Richard 4TH FLOOR ONE VINE STREET LONDON X0 W1J 0AH UNITED KINGDOM false true false false SVP, O&P - EAI Class A Ordinary Shares 2018-02-12 4 F false 105.00 109.70 D 5313.751 D Represents shares withheld by the issuer to satisfy tax withholding obligations in connection with the vesting 287 shares of restricted stock units granted to the reporting person on February 12, 2013. Includes 1,860 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 177 granted on February 17, 2015 vest on February 17, 2018; 45 granted on April 2, 2015 vest on April 2, 2018; 97 granted on July 1, 2015 which vest on July 1, 2018; 615 granted on February 16, 2016 that vest on February 16, 2019 and 926 granted on February 16, 2017 that vest on February 16, 2020. /s/ Lara A. Mason, Attorney-in-Fact 2018-02-14