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These shares fully vested on February 18, 2026 following certification by the Issuer's Compensation & Talent Development Committee."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 116,241 restricted stock units (\"RSUs\") granted pursuant to the issuer's long-term incentive plan: 28,211 granted on February 23, 2023 that vest on February 23, 2026; 15,406 granted on February 22, 2024 that vest on February 22, 2026; 15,406 granted on February 22, 2024 that vest on February 22, 2027;  19,074 granted on February 27, 2025 that vest on February 27, 2026; 19,072 granted on February 27, 2025 that vest on February 27, 2027 and 19,072 granted on February 27, 2025 vest on February 27, 2028."}],"balance_after":174676,"source":{"system":"sec-edgar","filing":"0001911538-26-000002","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1489393/000191153826000002/primarydocument.xml","form_type":"4"}},{"id":890627,"issuer":{"id":3246,"kind":"organization","name":"LyondellBasell Industries N.V."},"owners":[{"id":63289,"kind":"person","name":"Vanacker Peter Z. 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The reporting person herby 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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 116,241 restricted stock units (\"RSUs\") granted pursuant to the issuer's long-term incentive plan: 28,211 granted on February 23, 2023 that vest on February 23, 2026; 15,406 vest on February 22, 2026 and 15,406 vest on February 22, 2027 and 57,218 granted on February 27, 2025 of which 19,074 vest on February 27, 2026, 19,072 vest on February 27, 2027 and 19,072 vest on February 27, 2028."}],"balance_after":160351,"source":{"system":"sec-edgar","filing":"0001562180-25-005841","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1489393/000156218025005841/primarydocument.xml","form_type":"4"}},{"id":1131801,"issuer":{"id":3246,"kind":"organization","name":"LyondellBasell Industries N.V."},"owners":[{"id":63289,"kind":"person","name":"Vanacker Peter Z. 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The 46,219 RSUs reported on this Form 4 vest as follows: 15,407 vest on February 22, 2025, 15,406 vest on February 22, 2026 and 15,406 vest on February 22, 2027."}],"balance_after":114655,"source":{"system":"sec-edgar","filing":"0001562180-24-001761","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1489393/000156218024001761/primarydocument.xml","form_type":"4"}},{"id":1879679,"issuer":{"id":3246,"kind":"organization","name":"LyondellBasell Industries N.V."},"owners":[{"id":63289,"kind":"person","name":"Vanacker Peter Z. E.","position":1,"cik":"0001911538","reported_name":"Vanacker Peter Z. 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Award vests as follows: 35,711  vest February 23, 2024, 35,709 vest February 23, 2025 and 35,709 vest February 23, 2026."}],"balance_after":107129,"derivative":{"exercise_price":94.65,"expiration_date":"2033-02-23","underlying":"Class A Ordinary Shares","underlying_shares":107129},"source":{"system":"sec-edgar","filing":"0001562180-23-001912","document":"primarydocument.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1489393/000156218023001912/primarydocument.xml","form_type":"4"}},{"id":1990286,"issuer":{"id":3246,"kind":"organization","name":"LyondellBasell Industries N.V."},"owners":[{"id":63289,"kind":"person","name":"Vanacker Peter Z. E.","position":1,"cik":"0001911538","reported_name":"Vanacker Peter Z. 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The 28,211 RSUs reported on this Form 4 vest on February 23, 2026."}],"balance_after":72624,"source":{"system":"sec-edgar","filing":"0001562180-23-001912","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1489393/000156218023001912/primarydocument.xml","form_type":"4"}},{"id":2239092,"issuer":{"id":3246,"kind":"organization","name":"LyondellBasell Industries N.V."},"owners":[{"id":63289,"kind":"person","name":"Vanacker Peter Z. E.","position":1,"cik":"0001911538","reported_name":"Vanacker Peter Z. 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Pursuant to the adjustment, the exercise price of the Stock Options (Right to buy) has been amended to reduce such exercise price by the amount of the special dividend ($5.20). There have been no other changes to the terms of the Stock Options (Right to buy)."},{"field":"shares","element":"transactionShares","label":"F1","text":"The transactions reported herein reflect a one-time stock option exercise price adjustment effective June 6, 2022, related to a special dividend of $5.20 per share and pursuant to the adjustment provisions of the LyondellBasell Industries Long Term Incentive Plan, and are being reported in this manner solely to comply with the technical reporting requirements under Section 16(a) of the Securities Exchange Act of 1934. Pursuant to the adjustment, the exercise price of the Stock Options (Right to buy) has been amended to reduce such exercise price by the amount of the special dividend ($5.20). There have been no other changes to the terms of the Stock Options (Right to buy)."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"This stock option award was previously reported as an option relating to 96,191 shares of the Issuer's Stock Options (Right to Buy) at an exercise price of $106.71 per share and was adjusted as a result of the special dividend."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"The transactions reported herein reflect a one-time stock option exercise price adjustment effective June 6, 2022, related to a special dividend of $5.20 per share and pursuant to the adjustment provisions of the LyondellBasell Industries Long Term Incentive Plan, and are being reported in this manner solely to comply with the technical reporting requirements under Section 16(a) of the Securities Exchange Act of 1934. Pursuant to the adjustment, the exercise price of the Stock Options (Right to buy) has been amended to reduce such exercise price by the amount of the special dividend ($5.20). There have been no other changes to the terms of the Stock Options (Right to buy)."}],"balance_after":96191,"derivative":{"exercise_price":101.51,"exercise_date":"2022-05-23","expiration_date":"2032-05-23","underlying":"Class A Ordinary Shares","underlying_shares":96191},"source":{"system":"sec-edgar","filing":"0001562180-22-004937","document":"primarydocument.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1489393/000156218022004937/primarydocument.xml","form_type":"4"}},{"id":2256722,"issuer":{"id":3246,"kind":"organization","name":"LyondellBasell Industries N.V."},"owners":[{"id":63289,"kind":"person","name":"Vanacker Peter Z. E.","position":1,"cik":"0001911538","reported_name":"Vanacker Peter Z. 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