X0306 4 2018-01-12 false 0001489393 LyondellBasell Industries N.V. LYB 0001500293 Patel Bhavesh V. 4TH FLOOR ONE VINE STREET LONDON X0 W1J 0AH UNITED KINGDOM false true false false Chief Executive Officer Class A ordinary shares 2018-01-12 4 F false 8054.00 117.68 D 165208.00 D Class A ordinary shares 61810.00 I By Family Trust Represents shares withheld by the issuer to satisfy tax withholding obligations in connection with the vesting 23,638 shares of restricted stock units granted to the reporting person on January 12, 2015. Includes 122,795 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 23,638 granted on January 12, 2015 that vest on January 12, 2019; 23,637 granted on January 12, 2015 that vest on January 12, 2020; 19,110 granted on February 17, 2015 that vest on February 17, 2018; 26,066 granted on February 16, 2016 that vest on February 16, 2019 and 30,344 granted on February 16, 2017 that vest on February 16, 2020. /s/ Lara A. Mason, Attorney-in-Fact 2018-01-17