LyondellBasell (LYB) director RSU vesting leads to share tax withholding

Rhea-AI Filing Summary

LyondellBasell Industries N.V. director Lincoln E. Benet reported routine equity compensation activity involving restricted stock units. On May 21, 2026, he acquired 2,321 Class A Ordinary Shares at $0.00 per share as a grant under the company’s long-term incentive plan, with these RSUs vesting on May 21, 2027.

On May 22, 2026, 2,917 restricted stock units automatically vested into shares, and 1,410 shares were withheld by the issuer at a price of $69.72 per share to satisfy tax withholding obligations, not as an open-market sale. After these transactions, Benet directly owned 13,381 Class A Ordinary Shares, and the footnotes indicate additional RSUs remain outstanding that are scheduled to vest on future dates.

Insider Trade Summary

Net Buyer: 911 shares

Net Buy 2 txns

Insider Benet Lincoln E

Role Director

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Class A Ordinary Shares	1,410	$69.72	$98K
Grant/Award	Class A Ordinary Shares	2,321	$0.00	$0.00

Holdings After Transaction: Class A Ordinary Shares — 13,381 shares (Direct)

Footnotes (3)

1. F1. Includes 5,238 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan, including 2,917 that vest on May 22, 2026. The 2,321 RSUs reported on this Form 4 vest on May 21, 2027.
2. F2. On May 22, 2026 the reporting person's restricted stock units automatically vested 2,917 shares. 1,410 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations.
3. F3. 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

RSU grant: 2,321 shares Tax-withholding shares: 1,410 shares Tax-withholding price: $69.72 per share +3 more

6 metrics

RSU grant 2,321 shares Class A Ordinary Shares granted on May 21, 2026; vest May 21, 2027

Tax-withholding shares 1,410 shares Shares withheld on May 22, 2026 to cover tax on vested RSUs

Tax-withholding price $69.72 per share Value used for 1,410-share tax-withholding disposition on May 22, 2026

Shares held after transactions 13,381 shares Direct Class A Ordinary Share ownership following Form 4 transactions

RSUs vested 2,917 RSUs Restricted stock units that automatically vested on May 22, 2026

Total RSUs referenced 5,238 RSUs RSUs granted under long-term incentive plan mentioned in footnotes

Key Terms

restricted stock units ("RSUs"), long-term incentive plan, tax withholding obligations, grant, award, or other acquisition, +1 more

5 terms

restricted stock units ("RSUs") financial

"Includes 5,238 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

"restricted stock units ("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.

tax withholding obligations financial

"1,410 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations"

grant, award, or other acquisition financial

"transaction_code_description": "Grant, award, or other acquisition""

Payment of exercise price or tax liability by delivering securities financial

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

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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 05/26/2026 - 04:03 PM Learn about SEC filing dates

FAQ

What insider transactions did LyondellBasell (LYB) director Lincoln E. Benet report?

Lincoln E. Benet reported an RSU grant of 2,321 Class A Ordinary Shares and a tax-withholding disposition of 1,410 shares. The disposition covered tax on vested RSUs and was not an open-market sale of shares.

How many LyondellBasell (LYB) shares does Lincoln E. Benet hold after this Form 4?

After the reported transactions, Lincoln E. Benet directly owns 13,381 Class A Ordinary Shares. This reflects the net position following the RSU vesting and related tax withholding, as disclosed in the Form 4 data.

What RSU award did Lincoln E. Benet receive from LyondellBasell (LYB)?

Benet received an award of 2,321 restricted stock units under LyondellBasell’s long-term incentive plan. These RSUs are scheduled to vest on May 21, 2027, providing additional shares if he remains eligible through that date.

Why were 1,410 LyondellBasell (LYB) shares disposed of in this filing?

The 1,410 shares were withheld by LyondellBasell to satisfy tax withholding obligations on RSUs that vested on May 22, 2026. This tax-withholding disposition is different from an open-market sale initiated by the director.

How many LyondellBasell (LYB) RSUs related to Lincoln E. Benet are mentioned?

The footnotes reference 5,238 restricted stock units in total, including 2,917 that vested on May 22, 2026 and 2,321 that vest on May 21, 2027. These RSUs are granted under the company’s 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

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^*

Benet Lincoln E

(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)
05/21/2026

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	05/21/2026		A		2,321	A	$0.00	14,791(1)	D
Class A Ordinary Shares	05/22/2026		F		1,410(2)	D	$69.72	13,381(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. Includes 5,238 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan, including 2,917 that vest on May 22, 2026. The 2,321 RSUs reported on this Form 4 vest on May 21, 2027.

2. On May 22, 2026 the reporting person's restricted stock units automatically vested 2,917 shares. 1,410 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations.

3. 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	05/26/2026
	** 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)