LyondellBasell (NYSE: LYB) EVP reports RSU tax-withholding share disposals

Rhea-AI Filing Summary

LyondellBasell Industries N.V. executive vice president Yvonne van der Laan reported two tax-related share dispositions tied to restricted stock unit (RSU) vesting. On February 22, 2026, 686 Class A shares were withheld at $56.67 per share, and on February 23, 2026, 782 shares were withheld at $56.66 per share to satisfy tax withholding obligations. After these transactions, she directly owned 13,310 Class A shares and continued to hold thousands of unvested RSUs under the company’s long-term incentive plan.

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

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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^*

van der Laan Yvonne

(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, Circular & Low Carbon Sol

3. Date of Earliest Transaction (Month/Day/Year)
02/22/2026

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	02/22/2026		F		686(1)	D	$56.67	14,092(2)	D
Class A Ordinary Shares	02/23/2026		F		782(3)	D	$56.66	13,310(4)	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 February 22, 2026 the reporting person's restricted stock units automatically vested 1,400 shares. 686 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations.

2. Includes 9,431 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; 1,400 granted on February 22, 2024 that vest on February 22, 2027; 2,146 granted on February 27, 2025 that vest on February 27, 2026; 2,145 granted on February 27, 2025 that vest on February 27, 2027 and 2,145 granted on February 27, 2025 that vest on February 27, 2028.

3. On February 23, 2026 the reporting person's restricted stock units automatically vested 1,595 shares. 782 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations.

4. Includes 7,836 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 1,400 granted on February 22, 2024 that vest on February 22, 2027; 2,146 granted on February 27, 2025 that vest on February 27, 2026; 2,145 granted on February 27, 2025 that vest on February 27, 2027 and 2,145 granted on February 27, 2025 that vest on February 27, 2028.

Remarks:

	/s/ Lara A. Mason, Attorney-in-Fact	02/24/2026
	** 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).
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FAQ

What insider transactions did LYB executive Yvonne van der Laan report?

Yvonne van der Laan reported two tax-withholding dispositions of LyondellBasell Class A shares. On February 22, 2026, 686 shares were withheld, and on February 23, 2026, 782 shares were withheld, both to cover tax obligations arising from restricted stock unit vesting.

Were the LYB insider transactions open-market sales or tax withholding?

The LYB insider transactions were tax-withholding dispositions, not open-market sales. Shares were automatically withheld by the issuer to satisfy tax liabilities triggered when restricted stock units vested, as indicated by transaction code F and the detailed footnotes describing the vesting events.

How many LYB shares does Yvonne van der Laan own after these Form 4 transactions?

After the reported transactions, Yvonne van der Laan directly owned 13,310 LYB Class A Ordinary Shares. This figure reflects her ownership following the February 23, 2026 tax-withholding disposition and is separate from her remaining unvested restricted stock units under LyondellBasell’s long-term incentive plan.

What RSU awards related to LYB shares are disclosed for Yvonne van der Laan?

The filing discloses thousands of LYB restricted stock units granted under the long-term incentive plan, with tranches granted in 2023, 2024, and 2025. These RSUs vest on specific future dates between February 2026 and February 2028, providing ongoing equity-based compensation exposure.

What does transaction code F mean in the LYB Form 4 filing?

Transaction code F in the LYB Form 4 indicates payment of exercise price or tax liability by delivering securities. Here, it reflects that shares were withheld by LyondellBasell to cover tax withholding obligations arising when restricted stock units held by the executive automatically vested.