X0306 4 2021-08-05 false 0001489393 LyondellBasell Industries N.V. LYB 0001335032 Cooper Stephen Forbes 4TH FLOOR ONE VINE STREET LONDON X0 W1J 0AH UNITED KINGDOM true false false false Class A Ordinary Shares 2021-08-05 4 J false 770.00 0.00 D 20004.00 D Class A Ordinary Shares 2021-08-05 4 J false 770.00 0.00 A 16389.00 I By Spouse This transaction involved a transfer of securities by reporting person to his spouse. The reporting person disclaims beneficial ownership of the shares held by his spouse, and this report should not be deemed an admission that the reporting person is the beneficial owner of his spouse's shares for purposes of Section 16 or any other purpose. Includes restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan, including 1,531 granted on May 27, 2021 that vest May 27, 2022. /s/ Lara A. Mason, Attorney-in-Fact 2021-08-06