LyondellBasell (LYB) CEO receives 98,549-share equity award, withholds shares for tax

Rhea-AI Filing Summary

LyondellBasell Industries N.V. Chief Executive Officer Peter Z. E. Vanacker reported two equity transactions in Class A ordinary shares. On February 28, 2026, he acquired 98,549 shares at $0.00 per share as a grant or award under the company’s long-term incentive plan, bringing his direct holdings to 248,554 shares. On February 27, 2026, 7,506 shares were disposed of at $57.52 per share to cover tax withholding when 19,074 restricted stock units vested. Following that tax-withholding disposition, he directly owned 150,005 shares. Footnotes state that his holdings include restricted stock units scheduled to vest between 2027 and 2029 under the 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^*

Vanacker Peter Z. E.

(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)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

3. Date of Earliest Transaction (Month/Day/Year)
02/27/2026

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	02/27/2026		F		7,506(1)	D	$57.52	150,005(2)	D
Class A Ordinary Shares	02/28/2026		A		98,549	A	$0.00	248,554(3)	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 27, 2026 the reporting person's restricted stock units automatically vested 19,074 shares. 7,506 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations.

2. Includes 53,550 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 15,406 granted on February 22, 2024 that vest on February 22, 2027; 19,072 granted on February 27, 2025 that vest on February 27, 2027 and 19,072 granted on February 27, 2025 vest on February 27, 2028.

3. Includes 152,099 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 15,406 granted on February 22, 2024 that vest on February 22, 2027; 19,072 granted on February 27, 2025 that vest on February 27, 2027 and 19,072 granted on February 27, 2025 vest on February 27, 2028. The 98,549 RSUs reported on this Form 4 vest as follows: 32,851 vest on February 28, 2027, 32,849 vest on February 28, 2028 and 32,849 vest on February 28, 2029.

Remarks:

	/s/ Lara A. Mason, Attorney-in-Fact	03/03/2026
	** 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).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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FAQ

What did LyondellBasell (LYB) CEO Peter Vanacker report in this Form 4?

Peter Vanacker reported one equity award and one tax-related share disposition. He received 98,549 Class A ordinary shares as a grant and had 7,506 shares withheld to satisfy tax obligations linked to vested restricted stock units.

How many LyondellBasell (LYB) shares did the CEO acquire in the latest award?

The CEO acquired 98,549 Class A ordinary shares at $0.00 per share as a grant. This award was made under LyondellBasell’s long-term incentive plan and increased his directly held shares to a reported total of 248,554.

Why were 7,506 LyondellBasell (LYB) shares disposed of in this filing?

The 7,506 shares were withheld to cover tax obligations when 19,074 restricted stock units vested. This tax-withholding disposition is coded as an “F” transaction and does not represent an open-market sale for investment purposes.

What is the CEO’s reported LyondellBasell (LYB) share ownership after these transactions?

After the February 28, 2026 grant, the CEO directly owned 248,554 Class A ordinary shares. Following the February 27, 2026 tax-withholding disposition, his direct holdings were reported as 150,005 shares before the subsequent award increased the total.

How do restricted stock units factor into the LyondellBasell (LYB) CEO’s holdings?

Footnotes explain that the CEO’s reported holdings include restricted stock units granted under the long-term incentive plan. These RSUs are scheduled to vest in tranches between 2027 and 2029, potentially converting into additional shares over time.

Are the LyondellBasell (LYB) CEO’s share disposals open-market sales?

No, the filing describes the disposal as a tax-withholding transaction coded “F.” Shares were withheld by the issuer to satisfy tax liabilities on vested restricted stock units, rather than being sold by the CEO on the open market.