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

Rhea-AI Filing Summary

LyondellBasell Industries (LYB) filed a Form 4 reporting an automatic RSU vesting and related tax withholding. On October 15, 2025, 273 Class A ordinary shares vested from previously granted RSUs, and 131 shares were withheld by the issuer to cover taxes at a reported price of $46.76 under code F.

After the transaction, the reporting person beneficially owns 14,225 Class A ordinary shares directly. The filing notes 10,831 RSUs outstanding, including grants from February 2023, February 2024, and February 2025, with scheduled vesting dates on February 23, 2026; February 22, 2026 and 2027; and February 27, 2026, 2027, and 2028.

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
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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)
10/15/2025

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	10/15/2025		F		131(1)	D	$46.76	14,225(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 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.

2. 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.

Remarks:

	/s/ Lara A. Mason, Attorney-in-Fact	10/17/2025
	** 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.

FAQ

What did LyondellBasell (LYB) report on this Form 4?

An RSU vesting event on October 15, 2025 with 131 shares withheld to cover taxes at $46.76 (code F).

How many shares vested and how many were withheld?

273 shares vested from RSUs; 131 shares were withheld for tax obligations.

What is the insider’s share ownership after the transaction?

The reporting person holds 14,225 Class A ordinary shares directly after the transaction.

What RSUs remain outstanding for the LYB officer?

The filing lists 10,831 RSUs outstanding across grants from 2023, 2024, and 2025.

When are the remaining RSUs scheduled to vest?

Scheduled vesting on Feb 23, 2026; Feb 22, 2026 and 2027; and Feb 27, 2026, 2027, 2028.

What does transaction code F mean in this context?

Code F indicates shares were withheld to satisfy the issuer’s tax withholding obligations tied to an equity award vesting.