X0306 4 2019-09-02 true 0001489393 LyondellBasell Industries N.V. LYB 0001697502 Augustowski Paul A 4TH FLOOR ONE VINE STREET LONDON X0 W1J 0AH UNITED KINGDOM false true false false SVP, O&P - Americas Class A Ordinary Shares 2019-09-02 4 D false 568.00 0.00 D 15151.00 D Class A Ordinary Shares 2019-09-02 4 D false 1333.00 0.00 D 13818.00 D Class A Ordinary Shares 2019-09-02 4 D false 141.00 0.00 D 13677.00 D Class A Ordinary Shares 2019-09-02 4 F false 174.00 77.38 D 13503.00 D Class A Ordinary Shares 2019-09-02 4 F false 276.00 77.38 D 13227.00 D Class A Ordinary Shares 2019-09-02 4 F false 94.00 77.38 D 13133.00 D The reporting person's employment with the company ended on September 2, 2019 and, pursuant to the terms of his restricted stock unit award, forfeited the 568 shares reported on this Form 4. Price is not applicable. The reporting person's employment with the company ended on September 2, 2019 and, pursuant to the terms of his restricted stock unit award, forfeited the 1,333 shares reported on this Form 4. The reporting person's employment with the company ended on September 2, 2019 and, pursuant to the terms of his restricted stock unit award, forfeited the 141 shares reported on this Form 4. Represents shares withheld by the issuer to satisfy tax withholding obligations in connection with the pro-rata vesting of 711 shares of restricted stock units granted to the reporting person on February 21, 2018. Represents shares withheld by the issuer to satisfy tax withholding obligations in connection with the pro-rata vesting of 1,130 shares of restricted stock units granted to the reporting person on February 16, 2017. Represents shares withheld by the issuer to satisfy tax withholding obligations in connection with the pro-rata vesting of 382 shares of restricted stock units granted to the reporting person on February 21, 2019. /s/ Lara A. Mason, Attorney-in-Fact 2019-09-04