LyondellBasell Industries 8-K 2026-05-01

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): May 1, 2026

LYONDELLBASELL INDUSTRIES N.V.

(Exact name of registrant as specified in its charter)

(Address of principal executive offices) (Zip code)

(Registrant’s telephone numbers, including area codes)

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02. Results of Operations and Financial Conditions.

On May 1, 2026, LyondellBasell Industries N.V. ("LYB") announced earnings results for the quarter ended March 31, 2026 and provided a supplemental discussion of segment results. Copies of our earnings release and segment results are attached as Exhibit 99.1 and 99.2, respectively, and are incorporated into this Item 2.02 by reference.

The information in this Item 2.02 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.

Item 8.01. Other Events.

On May 1, 2026, LYB announced the completion of the sale of select European olefins and polyolefins assets, and the associated business including corporate functions, to AEQUITA pursuant to the terms and conditions of a sale and purchase agreement (“SPA”) which contains customary post-closing covenants related to employee and other matters.

The foregoing descriptions of the sale and SPA do not purport to be complete and are qualified in their entirety by reference to the full text of the SPA, which is incorporated by reference into this Current Report on Form 8-K; see Exhibit 10.1 below.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has caused this report to be signed on its behalf by the undersigned, hereunto duly authorized.