LyondellBasell director Kamsky acquires 720 shares

Her quarterly director retainer was elected in shares instead of cash, with the award quantity based on the applicable quarter’s average closing price.

Rhea-AI Filing Summary

LyondellBasell Industries N.V. director Virginia A. Kamsky acquired 720 Class A ordinary shares on September 30, 2026, as a quarterly installment of her annual retainer, which she elected to receive in stock instead of cash. The share count was calculated using $61.22, the average of daily closing prices over the applicable quarter. She also reported 139 shares delivered or withheld for payment of exercise price or tax liability at $57.47 per share. A footnote states that 2,321 restricted stock units granted under the long-term incentive plan vest on May 21, 2027.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider KAMSKY VIRGINIA A

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Class A Ordinary Shares F1, F2	720	$0.00	$0.00
Exercise Price or Tax Liability	Class A Ordinary Shares F2	139	$57.47	$8K

Holdings After Transaction: Class A Ordinary Shares — 10,864 shares (Direct)

Footnotes (2)

1. F1. Prior to the beginning of the year, the reporting person elected to receive common stock in lieu of cash for her annual retainer, which is paid in quarterly installments. The number of shares issued was calculated based on $61.22, which is the average of the daily closing prices of the issuer's shares over the applicable quarter.
2. F2. Includes 2,321 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan that vest on May 21, 2027.

Key Figures

Class A ordinary shares acquired: 720 shares Average daily closing-price basis: $61.22 per share Shares delivered or withheld: 139 shares +2 more

5 metrics

Class A ordinary shares acquired 720 shares Annual retainer installment on September 30, 2026

Average daily closing-price basis $61.22 per share Used to calculate the retainer shares over the applicable quarter

Shares delivered or withheld 139 shares Reported for payment of exercise price or tax liability on September 30, 2026

Reported per-share price $57.47 per share 139-share transaction on September 30, 2026

Restricted stock units 2,321 RSUs Granted under the long-term incentive plan; vest on May 21, 2027

Key Terms

annual retainer, restricted stock units, long-term incentive plan

3 terms

annual retainer financial

"common stock in lieu of cash for her annual retainer"

restricted stock units financial

"2,321 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

long-term incentive plan financial

"RSUs granted pursuant to the issuer's long-term incentive plan"

A long-term incentive plan is a company program that pays executives or employees with stock, options, or cash tied to multi-year performance goals, where the rewards become theirs only after meeting conditions over time. Think of it as a delayed bonus or retirement-style reward that aligns employees’ interests with shareholders by encouraging them to boost long-term value; investors watch these plans because they affect pay costs, share dilution and management incentives.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many LYB shares did director Virginia A. Kamsky acquire?

Virginia A. Kamsky acquired 720 Class A ordinary shares on September 30, 2026, as a quarterly installment of her annual retainer. She had elected to receive common stock in lieu of cash, and the share count was calculated using $61.22, the average of daily closing prices over the applicable quarter.

What did Virginia A. Kamsky report for 139 LYB shares?

She reported 139 shares delivered or withheld for payment of exercise price or tax liability on September 30, 2026. The reported price was $57.47 per share.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/02/2026 - 04:03 PM Accepted by SEC EDGAR 10/02/2026 - 04:02 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^*

KAMSKY VIRGINIA A

(Last) (First) (Middle)

4TH FLOOR

ONE VINE STREET

(Street)

LONDON UNITED KINGDOM W1J 0AH

(City) (State) (Zip)

UNITED KINGDOM

(Country)

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
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/30/2026

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

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

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

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	09/30/2026		A		720(1)	A	$0.00	11,003(2)	D
Class A Ordinary Shares	09/30/2026		F		139	D	$57.47	10,864(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. Prior to the beginning of the year, the reporting person elected to receive common stock in lieu of cash for her annual retainer, which is paid in quarterly installments. The number of shares issued was calculated based on $61.22, which is the average of the daily closing prices of the issuer's shares over the applicable quarter.

2. Includes 2,321 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan that vest on May 21, 2027.

Remarks:

	/s/ Lara A. Mason, Attorney-in-Fact	10/02/2026
	** 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).
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.
* Form 4: SEC 1474 (03-26)