Z. Vanacker Peter - May 23, 2025 Form 4 Insider Report for LyondellBasell Industries N.V. (LYB)

Role: Chief Executive Officer, Director
Signature: /s/ Lara A. Mason, Attorney-in-Fact
Stock symbol: LYB
Transactions as of: May 23, 2025
Transactions value $: -$510,951
Form type: 4
Date filed: 5/28/2025, 05:04 PM
Previous filing: Mar 3, 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Vanacker Peter Z. E.	Chief Executive Officer, Director	4TH FLOOR, ONE VINE STREET, LONDON, UNITED KINGDOM	/s/ Lara A. Mason, Attorney-in-Fact	2025-05-28	0001911538

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	LYB	Class A Ordinary Shares	Tax liability	-$511K	-9.1K	-4.8%	$56.13	180K	May 23, 2025	Direct	F1, F2

Showing 1 to 1 of 1 entries

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

Explanation of Responses:

Id	Content
F1	On May 23, 2025 the reporting person's restricted stock units automatically vested 23,132 shares. 9,103 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations.
F2	Includes 116,241 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 28,211 granted on February 23, 2023 that vest on February 23, 2026; 46,219 granted on February 22, 2024 of which 15,407 vested on February 22, 2025, 15,406 vest on February 22, 2026 and 15,406 vest on February 22, 2027 and 57,218 granted on February 27, 2025 of which 19,074 vest on February 27, 2026, 19,072 vest on February 27, 2027 and 19,072 vest on February 27, 2028.

Content

On May 23, 2025 the reporting person's restricted stock units automatically vested 23,132 shares. 9,103 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations.

Includes 116,241 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 28,211 granted on February 23, 2023 that vest on February 23, 2026; 46,219 granted on February 22, 2024 of which 15,407 vested on February 22, 2025, 15,406 vest on February 22, 2026 and 15,406 vest on February 22, 2027 and 57,218 granted on February 27, 2025 of which 19,074 vest on February 27, 2026, 19,072 vest on February 27, 2027 and 19,072 vest on February 27, 2028.