X0306 4/A 2015-02-17 2015-02-19 0001489393 LyondellBasell Industries N.V. LYB 0001532849 Ovelmen Karyn F. 4TH FLOOR ONE VINE STREET LONDON X0 W1J 0AH UNITED KINGDOM 1 EVP & CFO Class A ordinary shares 2015-02-17 4 F 0 319.0000 89.9400 D 53638.0000 D Class A ordinary shares 2015-02-17 4 F 0 6261.0000 89.9400 D 47377.0000 D Represents shares required to satisfy tax withholding obligations in connection with the vesting of 948 shares of qualified performance-based stock granted to the Reporting Person on December 11, 2012. Includes 32,073 restricted stock units granted pursuant to the issuer's long-term incentive plan; 8,676 granted on October 17, 2011 that vest on October 17, 2016; 9,811 granted on February 28, 2012 that vest on February 28, 2017; 910 granted on December 11, 2012 that vest on February 28, 2015; 7,348 granted on February 12, 2013 that vest on February 12, 2018 and 5,328 granted on February 20, 2014 that vest on February 20, 2017. Represents shares required to satisfy tax withholding obligations in connection with the vesting of 18,615 shares of qualified performance-based stock granted to the Reporting Person on February 28, 2012. The Form 4 filed on February 19, 2015 disclosed a number of shares withheld for taxes in connection with the vesting of qualified performance-based stock grants, which have been adjusted in this Amendment to appropriately disclose the number of shares actually withheld. An aggregate of 2 additional shares from that previously reported were actually withheld. The beneficial ownership amounts have been adjusted accordingly. /s/ Amanda K. Maki, Attorney in Fact 2015-03-19