LyondellBasell Industries N.V. (LYB) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-06-30 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: LyondellBasell Industries N.V. (LYB) CIK: 0001489393 --- Reporting Owner --- Name: Karlin Bridget E CIK: 0001797157 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Class A Ordinary Shares Date: 2026-06-30 | Code: A (Grant or award) Shares: +615 | Price: $0.00 Shares Owned After: 7,320 | Ownership: D (Direct) Footnotes: [F1] Prior to the beginning of the year, the reporting person elected to receive common stock in lieu of cash for her annual retainer, which is paid in quarterly installments. The number of shares issued was calculated based on $68.99, which is the average of the daily closing prices of the issuer's shares over the applicable quarter. [F2] Includes 2,321 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan that vest on May 21, 2027. [Transaction #2] Security: Class A Ordinary Shares Date: 2026-06-30 | Code: F (Payment of exercise/tax) Shares: -73 | Price: $52.65 Total Value: $3,843.45 Shares Owned After: 7,247 | Ownership: D (Direct) Footnotes: [F2] Includes 2,321 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan that vest on May 21, 2027. --- Footnotes (Complete Index) --- F1: Prior to the beginning of the year, the reporting person elected to receive common stock in lieu of cash for her annual retainer, which is paid in quarterly installments. The number of shares issued was calculated based on $68.99, which is the average of the daily closing prices of the issuer's shares over the applicable quarter. F2: Includes 2,321 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan that vest on May 21, 2027. --- Signature --- /s/ /s/ Lara A. Mason, Attorney-in-Fact (2026-07-02)