Yvonne van der Laan - Oct 15, 2025 Form 4 Insider Report for LyondellBasell Industries N.V. (LYB)

Role: EVP, Circular & Low Carbon Sol
Signature: /s/ Lara A. Mason, Attorney-in-Fact
Stock symbol: LYB
Transactions as of: Oct 15, 2025
Transactions value $: -$6,126
Form type: 4
Date filed: 10/17/2025, 04:44 PM
Previous filing: Mar 3, 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
van der Laan Yvonne	EVP, Circular & Low Carbon Sol	4TH FLOOR, ONE VINE STREET, LONDON, UNITED KINGDOM	/s/ Lara A. Mason, Attorney-in-Fact	2025-10-17	0001949202

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	LYB	Class A Ordinary Shares	Tax liability	-$6.13K	-131	-0.91%	$46.76	14.2K	Oct 15, 2025	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	On October 15, 2025 the reporting person's restricted stock units automatically vested 273 shares. 131 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations.
F2	Includes 10,831 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 1,595 granted on February 23, 2023 that vest on February 23, 2026; 4,200 granted on February 22, 2024 of which 1,400 vested on February 22, 2025, 1,400 vest on February 22, 2026; 1,400 vest on February 22, 2027 and 6,436 granted on February 27, 2025 of which 2,146 vest on February 27, 2026, 2,145 vest on February 27, 2027 and 2,145 vest on February 27, 2028.

Content

On October 15, 2025 the reporting person's restricted stock units automatically vested 273 shares. 131 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations.

Includes 10,831 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 1,595 granted on February 23, 2023 that vest on February 23, 2026; 4,200 granted on February 22, 2024 of which 1,400 vested on February 22, 2025, 1,400 vest on February 22, 2026; 1,400 vest on February 22, 2027 and 6,436 granted on February 27, 2025 of which 2,146 vest on February 27, 2026, 2,145 vest on February 27, 2027 and 2,145 vest on February 27, 2028.