LyondellBasell shareholders approve 10% share repurchase authorization, re-elect all directors

Proposal 6 An advisory resolution approving the compensation of the Company’s Named Executive Officers (“say-on-pay”) was approved based on the following votes: FOR AGAINST ABSTAIN BROKER NON-VOTES 272,594,744 6,627,652 245,014 13,013,799

Proposal 4 The appointment of PricewaterhouseCoopers N.V. as the auditor of the Company’s Dutch statutory annual accounts for the year ending December 31, 2023 was approved based on the following votes: FOR AGAINST ABSTAIN 290,313,150 2,052,373 115,686

Proposal 8 The authorization of the Board to repurchase up to 10% of the Company’s issued share capital, at prices ranging from the nominal value of the shares up to 110% of the market price for the shares, until November 19, 2024 was approved based on the following votes: FOR AGAINST ABSTAIN 290,685,372 1,229,600 566,237

Proposal 7 The shareholders approved, on an advisory basis, the frequency of “1 year” for the holding of the say-on-pay vote. The voting results are as follows: 1 YEAR 2 YEARS 3 YEARS ABSTAIN BROKER NON-VOTES 271,792,399 175,644 7,300,795 198,572 13,013,799

Proposal 2 The discharge of directors from liability was approved based on the following votes: FOR AGAINST ABSTAIN BROKER NON-VOTES 277,312,367 1,241,450 913,593 13,013,799

Proposal 5 The ratification of PricewaterhouseCoopers LLP as the Company’s independent registered public accounting firm for the year ending December 31, 2023 was approved based on the following votes: FOR AGAINST ABSTAIN 290,329,229 2,039,754 112,226

Proposal 3 The adoption of the Company’s Dutch statutory annual accounts for the year ended December 31, 2022 was approved based on the following votes: FOR AGAINST ABSTAIN 291,365,522 274,988 840,699

Proposal 9 The cancellation of all or a portion of shares held in or repurchased into the Company’s treasury account was approved based on the following votes: FOR AGAINST ABSTAIN 291,877,535 351,095 252,579

Proposal 1 The election of 11 director nominees to serve as members of the board of directors of the Company until the annual general meeting of shareholders in 2024 was approved based on the following votes: FOR AGAINST WITHHOLD BROKER NON-VOTES Jacques Aigrain 271,658,615 7,530,234 278,561 13,013,799 Lincoln Benet 271,920,717 7,409,386 137,307 13,013,799 Robin Buchanan 265,607,246 13,632,404 227,760 13,013,799 Anthony (Tony) Chase 273,786,757 5,524,255 156,398 13,013,799 Robert (Bob) Dudley 271,956,923 7,346,037 164,450 13,013,799 Claire Farley 270,063,392 9,188,504 215,514 13,013,799 Rita Griffin 278,632,351 714,454 120,605 13,013,799 Michael Hanley 278,548,231 797,163 122,016 13,013,799 Virginia Kamsky 271,356,267 7,949,069 162,074 13,013,799 Albert Manifold 270,119,343 9,182,728 165,339 13,013,799 Peter Vanacker 278,652,279 680,158 134,973 13,013,799