of this Current Report on Form 8-K, including Exhibits 99.1 and 99.2 furnished herewith, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and will not be incorporated by reference into any filing under the Exchange Act or the Securities Act of 1933, as amended, unless specifically identified therein as being incorporated therein by reference.

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The information set forth in

Entry into a Material Definitive Agreement. On May 29, 2026, certain subsidiaries of LyondellBasell Industries N.V. (the “Company”) entered into an amendment to the Company’s structured accounts receivables facility originated in September 2012 (the “Receivables Facility”) pursuant to an Eighth Amendment to Receivables Purchase Agreement, effective as of June 26, 2026, among Lyondell Chemical Company, as servicer, LYB Receivables LLC, a bankruptcy-remote special purpose entity that is a wholl…

The excerpt is incomplete and does not provide sufficient information to determine the nature of the event.

of this Current Report on Form 8-K, including Exhibits 99.1 and 99.2 furnished herewith, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and will not be incorporated by reference into any filing under the Exchange Act or the Securities Act of 1933, as amended, unless specifically identified therein as being incorporated therein by reference.

by reference. The information in this Current Report on Form 8-K, including Exhibits 99.1 and 99.2 furnished herewith, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and will not be incorporated by reference into any filing under the Exchange Act or the Securities Act of 1933, as amended, unless specifically identified therein as being incorporated therein by reference.

Entry into a Material Definitive Agreement. On November 13, 2025, LyondellBasell Industries N.V. (the “Company”) and its wholly owned subsidiary, LYB International Finance III, LLC (the “Issuer”), completed the underwritten public offering and sale by the Issuer of $500 million aggregate principal amount of 5.125% Guaranteed Notes due 2031 (the “2031 Notes”) and $1 billion aggregate principal amount of 5.875% Guaranteed Notes due 2036 (the “2036 Notes” and, together with the 2031 Notes, the “…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement. The information set forth under “

Entry into a Material Definitive Agreement. On June 5, 2025, LyondellBasell Industries N.V. (“LYB”) announced LyondellBasell Industries Holdings B.V. (the “Seller”) and AEQ Amethyst B.V. (the “Purchaser”) entered into a Put Option Letter Agreement (the “Agreement”) for the acquisition by the Purchaser of all of the issued and outstanding equity interests in the subsidiaries of LYB that hold (or will hold) the assets and liabilities of its olefins and polyolefins businesses at Carrington (UK),…

of this Current Report on Form 8-K, including Exhibits 99.1 and 99.2 furnished herewith, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and will not be incorporated by reference into any filing under the Exchange Act or the Securities Act of 1933, as amended, unless specifically identified therein as being incorporated therein by reference.

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement. The information set forth under “

Entry into a Material Definitive Agreement. On September 10, 2025, LyondellBasell Industries N.V. (the “Company”), LYB Americas Finance Company LLC, a wholly-owned subsidiary of the Company (“LYB Americas Finance”), Citibank, N.A., as administrative agent, and various financial institutions, as lenders, entered into Amendment No. 1 (the “Amendment”) to the Third Amended and Restated Credit Agreement dated as of July 17, 2024 (as amended, the “Credit Agreement”). The Amendment primarily increa…

by reference. The information in this Current Report on Form 8-K, including Exhibits 99.1 and 99.2 furnished herewith, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and will not be incorporated by reference into any filing under the Exchange Act or the Securities Act of 1933, as amended, unless specifically identified therein as being incorporated therein by reference.

Costs Associated with Exit or Disposal Activities. In connection with the Transaction described under

Entry into a Material Definitive Agreement. On June 5, 2025, in connection with its previously announced strategic review of certain European assets within its Olefins & Polyolefins-Europe, Asia, International (“O&P-EAI”) segment, LyondellBasell Industries N.V (“LYB”) provided an update on the sales process and announced plans to sell its olefins & polyolefins businesses at Carrington (UK), Tarragona (Spain), Münchsmünster (Germany), and Berre (France) (collectively, the “Target Group”). In c…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The information set forth in

Entry into a Material Definitive Agreement. On May 29, 2025, certain subsidiaries of LyondellBasell Industries N.V. (the “Company”) entered into an amendment to the Company’s $900 million structured accounts receivable receivables facility originated in September 2012 (the “Receivables Facility”) pursuant to a Seventh Amendment to Receivables Purchase Agreement, dated as of May 29, 2025, among Lyondell Chemical Company, as servicer, LYB Receivables LLC, a bankruptcy-remote special purpose ent…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement. The information set forth under “

Entry into a Material Definitive Agreement. On May 15, 2025, LyondellBasell Industries N.V. (the “Company”) and its wholly owned subsidiary, LYB International Finance III, LLC (the “Issuer”), completed the underwritten public offering and sale by the Issuer of $500 million aggregate principal amount of 6.150% Guaranteed Notes due 2035 (the “Notes”). The Notes are fully and unconditionally guaranteed by the Company. The offering of the Notes was registered under the Securities Act of 1933, as…

Other Events. On May 6, 2025, LyondellBasell Industries N.V. (the “Company”) and its wholly owned subsidiary, LYB International Finance III, LLC (the “Issuer”), entered into an Underwriting Agreement (the “Underwriting Agreement”) with BofA Securities, Inc. and Wells Fargo Securities, LLC, as representatives of the several underwriters named therein, relating to the underwritten public offering and sale by the Issuer of $500 million aggregate principal amount of 6.150% Guaranteed Notes due 20…

by reference. The information in this Current Report on Form 8-K, including Exhibits 99.1 and 99.2 furnished herewith, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and will not be incorporated by reference into any filing under the Exchange Act or the Securities Act of 1933, as amended, unless specifically identified therein as being incorporated therein by reference.

Senior Vice President, Chief Accounting Officer — Chukwuemeka (Emeka) A. Oyolu: Oyolu resigned to pursue another opportunity.

by reference. The information in this Current Report on Form 8-K, including Exhibits 99.1 and 99.2 furnished herewith, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and will not be incorporated by reference into any filing under the Exchange Act or the Securities Act of 1933, as amended, unless specifically identified therein as being incorporated therein by reference.

Chief Financial Officer — Michael McMurray: Michael McMurray is retiring as CFO, and Agustin Izquierdo will succeed him.

Results of Operations and Financial Conditions. Explanatory Note On November 1, 2024, LyondellBasell Industries N.V. (the “Company”) issued a press release and filed a Form 8-K announcing earnings results for the quarter ended September 30, 2024, and provided a supplemental discussion of segment results. The revised segment results discussion is furnished herewith as Exhibit 99.2 and includes a correction to a clerical error in our disclosure regarding the number of shares repurchased, and re…