Here are the 424B prospectus supplements from LyondellBasell Industries N.V. (LYB) in our archive over the last 12 months, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A 424B covers the supplement that carries the terms of a priced offering, so if you follow LYB and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full LYB filings page.
LyondellBasell Industries N.V., via wholly owned subsidiary LYB International Finance III, LLC, launched a primary debt offering of $1.5 billion in senior unsecured notes fully and unconditionally guaranteed by LyondellBasell.
The deal comprises $500 million 5.125% Guaranteed Notes due 2031 and $1.0 billion 5.875% Guaranteed Notes due 2036. Interest accrues from November 13, 2025 and is payable semi‑annually on January 15 and July 15, starting July 15, 2026. The notes rank as senior unsecured obligations and are structurally subordinated to liabilities of subsidiaries (other than the issuer).
Pricing terms include public offering prices of 99.806% (2031) and 99.279% (2036), with underwriting discounts of 0.600% and 0.650%, respectively. Estimated net proceeds are ~$1.478 billion, intended for general corporate purposes, which may include repayment of LYB International Finance II’s 0.875% 2026 notes and certain 2027 notes. The notes feature optional redemption, tax redemption at 100%, and a change‑of‑control repurchase at 101%. Par call dates are December 15, 2030 (2031s) and October 15, 2035 (2036s).