X0306 4 2018-02-12 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 SVP, Global I&D, Supply Chain Class A Ordinary Shares 2018-02-12 4 F false 133.00 109.70 D 9275.00 D Represents shares withheld by the issuer to satisfy tax withholding obligations in connection with the vesting 446 shares of restricted stock units granted to the reporting person on February 12, 2013. Includes 4,007 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 328 granted on February 17, 2015 vest on February 17, 2018; 92 granted on June 1, 2015 vest on June 1, 2018; 1,461 granted on February 16, 2016 that vest on February 16, 2019 and 2,126 granted on February 16, 2017 that vest on February 16, 2020. /s/ Lara A. Mason, Attorney-in-Fact 2018-02-14