[Form 4] LyondellBasell Industries N.V. Insider Trading Activity

Rhea-AI Filing Summary

LyondellBasell Industries N.V. (LYB) reported an insider equity transaction by its EVP & Chief Financial Officer. On 11/15/2025, the executive’s restricted stock units vested into 4,741 Class A ordinary shares, of which 1,156 shares were withheld by the company to cover tax obligations at a price of $45.3 per share. Following this tax withholding, the executive beneficially owned 14,094 Class A ordinary shares. The filing also notes 9,725 restricted stock units outstanding under the long-term incentive plan, with tranches scheduled to vest between 02/23/2026 and 02/27/2028.

Insider Trade Summary

Net Seller: 1,156 shares

Net Sell 1 txn

Insider Izquierdo Sabido Agustin

Role EVP & Chief Financial Officer

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Class A Ordinary Shares	1,156	$45.30	$52K

Holdings After Transaction: Class A Ordinary Shares — 14,094 shares (Direct)

Footnotes (2)

1. F1. On November 15, 2025, the reporting person's restricted stock units automatically vested 4,741 shares. 1,156 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations.
2. F2. Represents 9,725 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 424 granted on February 23, 2023 that vest on February 23, 2026; 242 granted on February 22, 2024 that vest on February 22, 2026; 242 granted on February 22, 2024 that vest on February 22, 2027; 182 granted on April 15, 2024 that vest on April 15, 2026; 182 granted on April 15, 2024 that vest on April 15, 2027; 2,819 granted on February 27, 2025 that vest on February 27, 2026; 2,817 granted on February 27, 2025 that vest on February 27, 2027 and 2,817 granted on February 27, 2025 that vest on February 27, 2028.

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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 11/17/2025 - 05:02 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Izquierdo Sabido Agustin

(Last) (First) (Middle)

4TH FLOOR

ONE VINE STREET

(Street)

LONDON X0 W1J 0AH

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
LyondellBasell Industries N.V. [ LYB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP & Chief Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
11/15/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Ordinary Shares	11/15/2025		F		1,156(1)	D	$45.3	14,094(2)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. On November 15, 2025, the reporting person's restricted stock units automatically vested 4,741 shares. 1,156 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations.

2. Represents 9,725 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 424 granted on February 23, 2023 that vest on February 23, 2026; 242 granted on February 22, 2024 that vest on February 22, 2026; 242 granted on February 22, 2024 that vest on February 22, 2027; 182 granted on April 15, 2024 that vest on April 15, 2026; 182 granted on April 15, 2024 that vest on April 15, 2027; 2,819 granted on February 27, 2025 that vest on February 27, 2026; 2,817 granted on February 27, 2025 that vest on February 27, 2027 and 2,817 granted on February 27, 2025 that vest on February 27, 2028.

Remarks:

	/s/ Lara A. Mason, Attorney-in-Fact	11/17/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.