James Malcolm Seward - 22 Feb 2026 Form 4 Insider Report for LyondellBasell Industries N.V. (LYB)

Signature
/s/ Lara A. Mason, Attorney-in-Fact
Issuer symbol
LYB
Transactions as of
22 Feb 2026
Net transactions value
-$121,657
Form type
4
Filing time
24 Feb 2026, 16:32:08 UTC
Previous filing
20 Feb 2026
Next filing
03 Mar 2026

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Seward James Malcolm EVP & Chief Innovation Officer 4TH FLOOR, ONE VINE STREET, LONDON, UNITED KINGDOM /s/ Lara A. Mason, Attorney-in-Fact 24 Feb 2026 0001783902

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction LYB Class A Ordinary Shares Tax liability $47,603 -840 -2.3% $56.67 35,869 22 Feb 2026 Direct F1, F2
transaction LYB Class A Ordinary Shares Tax liability $74,055 -1,307 -3.6% $56.66 34,562 23 Feb 2026 Direct F3, F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 On February 22, 2026 the reporting person's restricted stock units automatically vested 1,696 shares. 840 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations.
F2 Includes 10,633 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 2,639 granted on February 23, 2023 that vest on February 23, 2026; 1,696 granted on February 22, 2024 that vest on February 22, 2027; 2,100 granted on February 27, 2025 that vest on February 27, 2026, 2,099 granted on February 27, 2025 that vest on February 27, 2027 and 2,099 granted on February 27, 2025 that vest on February 27, 2028.
F3 On February 23, 2026 the reporting person's restricted stock units automatically vested 2,639 shares. 1,307 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations.
F4 Includes 7,994 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 1,696 granted on February 22, 2024 that vest on February 22, 2027; 2,100 granted on February 27, 2025 that vest on February 27, 2026, 2,099 granted on February 27, 2025 that vest on February 27, 2027 and 2,099 granted on February 27, 2025 that vest on February 27, 2028.