X0508 4 2024-02-23 true 0001489393 LyondellBasell Industries N.V. LYB 0001782276 Lane Kenneth Todd 4TH FLOOR ONE VINE STREET LONDON X0 W1J 0AH UNITED KINGDOM false true false false EVP, Olefins and Polyolefins false Class A Ordinary Shares 2024-02-23 4 M false 8757.00 94.65 A 100514.5199 D Class A Ordinary Shares 2024-02-23 4 M false 20472.00 99.21 A 120986.5199 D Class A Ordinary Shares 2024-02-23 4 S false 20472.00 99.21 D 100514.5199 D Class A Ordinary Shares 2024-02-23 4 S false 8757.00 99.1395 D 91757.5199 D Class A Ordinary Shares 2024-02-25 4 F false 2313.00 99.27 D 89444.5199 D Class A Ordinary Shares 2024-02-26 4 M false 9489.00 89.26 A 98933.5199 D Class A Ordinary Shares 2024-02-26 4 S false 9489.00 98.9231 D 89444.5199 D Stock Options (Right to Buy) 99.21 2024-02-23 4 M false 20472.00 0.00 D 2031-02-25 Class A Ordinary Shares 20472.00 10235.00 D Stock Options (Right to Buy) 94.65 2024-02-23 4 M false 8757.00 0.00 D 2033-02-23 Class A Ordinary Shares 8757.00 17510.00 D Stock Options (Right to Buy) 89.26 2024-02-26 4 M false 9489.00 0.00 D 2032-02-24 Class A Ordinary Shares 9489.00 9489.00 D Includes 27,949 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 7,200 granted February 24, 2022 that vest on February 24, 2025; 13,832 granted on May 26, 2022 that vest on May 26, 2024 and 6,917 granted on February 23, 2023 that vest on February 23, 2026. This transaction was executed in multiple trades at prices ranging from $ 99.055 USD to $ 99.27 USD. The price reported above reflects the weighted-average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. Represents shares withheld by the issuer to satisfy tax withholding obligations in connection with the vesting 5,878 shares of restricted stock units granted to the reporting person on February 25, 2021. This transaction was executed in multiple trades at prices ranging from $ 98.84 USD to $ 99.04 USD. The price reported above reflects the weighted-average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. Granted pursuant to the issuer's long-term incentive plan. Award has fully vested. Granted pursuant to the issuer's long-term incentive plan. Award vests as follows: 8,757 vested on February 23, 2024, 8,755 vest on February 23, 2025 and 8,755 vest on February 23, 2026. Granted pursuant to the issuer's long-term incentive plan. Award vests as follows: 9,491 vested on February 24, 2023, 9,489 vested on February 24, 2024 and 9,489 vest on February 24, 2025. /s/ Lara A. Mason, Attorney-in-Fact 2024-02-27