LYB executive reports share grant and tax withholding

LyondellBasell Industries EVP & Chief Innovation Officer James Malcolm Seward reported equity compensation transactions in the company’s Class A ordinary shares.

Rhea-AI Filing Summary

LyondellBasell Industries EVP & Chief Innovation Officer James Malcolm Seward reported equity compensation transactions in the company’s Class A ordinary shares. On February 28, 2026, he acquired 12,209 shares at $0.00 per share through a grant or award, bringing his direct holdings to 45,731 shares.

On February 27, 2026, 2,100 restricted stock units vested and 1,040 shares were withheld at $57.52 per share to cover tax obligations, leaving 33,522 shares directly held after that disposition. Footnotes indicate he holds 18,103 restricted stock units under the long‑term incentive plan, with 12,209 RSUs vesting in tranches from 2027 through 2029.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Seward James Malcolm

Role EVP & Chief Innovation Officer

Type	Security	Shares	Price	Value
Grant/Award	Class A Ordinary Shares	12,209	$0.00	$0.00
Exercise Price or Tax Liability	Class A Ordinary Shares	1,040	$57.52	$60K

Holdings After Transaction: Class A Ordinary Shares — 45,731 shares (Direct)

Footnotes (3)

1. F1. On February 27, 2026 the reporting person's restricted stock units automatically vested 2,100 shares. 1,040 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations.
2. F2. Includes 5,894 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 1,696 granted on February 22, 2024 that vest on February 22, 2027; 2,099 granted on February 27, 2025 that vest on February 27, 2027 and 2,099 granted on February 27, 2025 that vest on February 27, 2028.
3. F3. Includes 18,103 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 1,696 granted on February 22, 2024 that vest on February 22, 2027; 2,099 granted on February 27, 2025 that vest on February 27, 2027 and 2,099 granted on February 27, 2025 that vest on February 27, 2028. The 12,209 RSUs reported on this Form 4 vest as follows: 4,071 vest on February 28, 2027, 4,069 vest on February 28, 2028 and 4,069 vest on February 28, 2029.

FAQ

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What did LYB executive James Malcolm Seward report in this Form 4 filing?

He reported a share grant and a tax-related share withholding. On February 28, 2026, he received 12,209 Class A ordinary shares as an equity award, and on February 27, 2026, 1,040 shares were withheld to satisfy tax obligations on vested restricted stock units.

How many LyondellBasell (LYB) shares did the EVP & Chief Innovation Officer acquire?

He acquired 12,209 Class A ordinary shares through a grant on February 28, 2026. The award was recorded at a price of $0.00 per share and increased his directly held stake to 45,731 shares immediately following this equity compensation transaction.

Why were 1,040 LYB shares disposed of in this insider transaction?

The 1,040 shares were withheld to cover tax withholding obligations. When 2,100 restricted stock units vested on February 27, 2026, LyondellBasell retained 1,040 shares at $57.52 per share to satisfy required taxes, rather than an open-market sale by the executive.

How many LyondellBasell (LYB) shares does James Malcolm Seward own after these transactions?

He directly held 33,522 shares after the February 27, 2026 tax-withholding disposition and 45,731 shares after the February 28, 2026 grant. These figures reflect non-derivative Class A ordinary shares reported as directly owned following each respective transaction.

What restricted stock unit (RSU) holdings for LYB are disclosed for the EVP?

He holds 18,103 restricted stock units under LyondellBasell’s long-term incentive plan. This includes 12,209 RSUs reported in this filing, which are scheduled to vest in three tranches during 2027, 2028, and 2029 according to the detailed vesting schedule provided.

How are the newly granted LYB RSUs scheduled to vest for the executive?

The 12,209 restricted stock units vest in annual tranches. According to the disclosure, 4,071 RSUs vest on February 28, 2027, 4,069 RSUs vest on February 28, 2028, and the remaining 4,069 RSUs vest on February 28, 2029 under the incentive plan.

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Accepted by SEC EDGAR 03/03/2026 - 04:40 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^*

Seward James Malcolm

(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 Innovation 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		1,040(1)	D	$57.52	33,522(2)	D
Class A Ordinary Shares	02/28/2026		A		12,209	A	$0.00	45,731(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 2,100 shares. 1,040 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations.

2. Includes 5,894 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 1,696 granted on February 22, 2024 that vest on February 22, 2027; 2,099 granted on February 27, 2025 that vest on February 27, 2027 and 2,099 granted on February 27, 2025 that vest on February 27, 2028.

3. Includes 18,103 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 1,696 granted on February 22, 2024 that vest on February 22, 2027; 2,099 granted on February 27, 2025 that vest on February 27, 2027 and 2,099 granted on February 27, 2025 that vest on February 27, 2028. The 12,209 RSUs reported on this Form 4 vest as follows: 4,071 vest on February 28, 2027, 4,069 vest on February 28, 2028 and 4,069 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.
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