LyondellBasell (LYB) director receives stock grant with tax shares withheld

Rhea-AI Filing Summary

LyondellBasell Industries N.V. director Virginia A. Kamsky received a grant of 646 Class A Ordinary Shares as part of her annual board retainer, which she had elected to take in stock rather than cash. A portion of these shares was withheld to cover taxes.

On this date, 142 shares were disposed of at $80.56 per share to satisfy tax liabilities, leaving her with 8,094 Class A Ordinary Shares held directly after the transactions. The number of shares issued for the retainer was based on an average share price of $59.31 over the applicable quarter.

Her holdings also include 2,917 restricted stock units (RSUs) granted under the company’s long-term incentive plan, which are scheduled to vest on May 22, 2026.

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	646	$0.00	--
Tax Withholding	Class A Ordinary Shares	142	$80.56	$11K

Holdings After Transaction: Class A Ordinary Shares — 8,236 shares (Direct)

Footnotes (1)

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 $59.31, which is the average of the daily closing prices of the issuer's shares over the applicable quarter. Includes 2,917 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan that vest on May 22, 2026.

Key Figures

Stock grant: 646 shares Tax withholding shares: 142 shares Tax withholding price: $80.56 per share +3 more

6 metrics

Stock grant 646 shares Class A Ordinary Shares granted as annual retainer compensation

Tax withholding shares 142 shares Shares disposed of to cover tax liabilities at $80.56 per share

Tax withholding price $80.56 per share Value used for 142-share tax-withholding disposition

Shares after transaction 8,094 shares Direct Class A Ordinary Shares held following the reported transactions

RSUs outstanding 2,917 RSUs Restricted stock units vesting on May 22, 2026

Retainer conversion price $59.31 Average closing price used to calculate shares for annual retainer

Key Terms

restricted stock units ("RSUs"), long-term incentive plan, annual retainer, tax liability

4 terms

restricted stock units ("RSUs") financial

"Includes 2,917 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan"

Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.

long-term incentive plan financial

"RSUs granted pursuant to the issuer's long-term incentive plan that vest on May 22, 2026"

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.

annual retainer financial

"elected to receive common stock in lieu of cash for her annual retainer, which is paid in quarterly installments"

tax liability financial

"Payment of exercise price or tax liability by delivering securities"

Form 4 Insider Transactions: What Each Field Means →

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 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)
03/31/2026

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	03/31/2026		A		646(1)	A	$0.00	8,236(2)	D
Class A Ordinary Shares	03/31/2026		F		142	D	$80.56	8,094(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 $59.31, which is the average of the daily closing prices of the issuer's shares over the applicable quarter.

2. Includes 2,917 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan that vest on May 22, 2026.

Remarks:

	/s/ Lara A. Mason, Attorney-in-Fact	04/02/2026
	** 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)

FAQ

What insider transactions did LYB director Virginia Kamsky report on this Form 4?

Virginia Kamsky reported receiving 646 Class A Ordinary Shares as a grant tied to her annual retainer, taken in stock instead of cash. She also had 142 shares withheld the same day at $80.56 per share to cover tax obligations related to this compensation.

Was Virginia Kamsky’s LYB Form 4 transaction an open-market buy or sell?

The filing shows a stock grant and tax withholding, not open-market trading. She acquired 646 shares as compensation and 142 shares were disposed of to satisfy tax liabilities, which is a routine, non-market mechanism rather than a discretionary purchase or sale in the open market.

How many LyondellBasell shares does Virginia Kamsky hold after these transactions?

After the reported transactions, Virginia Kamsky directly holds 8,094 Class A Ordinary Shares of LyondellBasell. This figure reflects the net position following the 646-share grant related to her retainer and the 142 shares withheld to cover associated tax obligations.

How was the number of LYB shares for Kamsky’s annual retainer calculated?

The number of shares issued for her annual retainer was determined using a reference price of $59.31 per share. This amount equals the average of LyondellBasell’s daily closing prices over the applicable quarter, converting the cash retainer into an equivalent stock grant.

What RSUs does Virginia Kamsky hold in LyondellBasell, and when do they vest?

Virginia Kamsky holds 2,917 restricted stock units (RSUs) granted under LyondellBasell’s long-term incentive plan. These RSUs are scheduled to vest on May 22, 2026, potentially increasing her shareholdings when they convert into Class A Ordinary Shares at vesting.

Why were 142 LYB shares disposed of in Virginia Kamsky’s Form 4 filing?

The 142 shares were disposed of to pay tax liabilities associated with the share-based compensation. They were valued at $80.56 per share for this purpose, reflecting a tax-withholding disposition rather than a voluntary open-market sale of LyondellBasell stock by the director.