LyondellBasell director reports RSU grant, tax withholding

LyondellBasell Industries N.V. director Robert W. Dudley reported routine equity compensation activity in the form of restricted stock units and related tax withholding.

Rhea-AI Filing Summary

LyondellBasell Industries N.V. director Robert W. Dudley reported routine equity compensation activity in the form of restricted stock units and related tax withholding.

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. These 2,321 RSUs are scheduled to vest on May 21, 2027.

A day later, on May 22, 2026, 2,917 previously granted RSUs automatically vested, and 708 shares were withheld by the issuer at $69.72 per share to cover tax withholding obligations, a non-market disposition rather than an open-market sale. After these transactions, Dudley directly held 9,820 Class A Ordinary Shares, including 5,238 RSUs granted under the long-term incentive plan.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Dudley Robert W.

Role Director

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Class A Ordinary Shares	708	$69.72	$49K
Grant/Award	Class A Ordinary Shares	2,321	$0.00	$0.00

Holdings After Transaction: Class A Ordinary Shares — 9,820 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. 708 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 at $0.00 Tax withholding shares: 708 shares at $69.72 Shares after transactions: 9,820 shares +3 more

6 metrics

RSU grant 2,321 shares at $0.00 Class A Ordinary Shares granted on May 21, 2026

Tax withholding shares 708 shares at $69.72 Withheld on May 22, 2026 for tax obligations

Shares after transactions 9,820 shares Total Class A Ordinary Shares held directly after May 22, 2026

Total RSUs held 5,238 RSUs Restricted stock units under long-term incentive plan

RSUs vested 2026 2,917 RSUs RSUs that vested on May 22, 2026

RSUs vesting 2027 2,321 RSUs RSUs vesting on May 21, 2027

Key Terms

restricted stock units ("RSUs"), long-term incentive plan, tax withholding obligations, Form 4

4 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

"708 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations"

Form 4 regulatory

"The 2,321 RSUs reported on this Form 4 vest on May 21, 2027"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

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

What insider transactions did LYB director Robert W. Dudley report?

Robert W. Dudley reported a grant of 2,321 Class A Ordinary Shares and a related tax withholding. The grant came via restricted stock units, and 708 shares were withheld when earlier RSUs vested to satisfy tax obligations.

Was the LYB Form 4 a market sale or a tax withholding event?

The Form 4 shows a tax withholding event, not a market sale. When 2,917 restricted stock units vested, 708 shares were withheld by LyondellBasell to cover tax obligations, a standard non-market disposition for equity compensation.

How many LYB shares did Robert W. Dudley receive in the new grant?

He received 2,321 Class A Ordinary Shares at $0.00 per share as a grant. These shares are in the form of restricted stock units that are scheduled to vest on May 21, 2027 under LyondellBasell’s long-term incentive plan.

How many LYB shares were withheld for taxes in this Form 4 filing?

A total of 708 shares of LyondellBasell Class A Ordinary Shares were withheld. These shares were retained by the issuer at $69.72 per share when 2,917 restricted stock units vested to satisfy tax withholding obligations.

What are Robert W. Dudley’s LYB holdings after these transactions?

After the reported transactions, Robert W. Dudley directly held 9,820 Class A Ordinary Shares. This figure includes 5,238 restricted stock units granted under the issuer’s long-term incentive plan, with portions vesting in 2026 and 2027.

How many LYB restricted stock units vest for Robert W. Dudley and when?

He has 5,238 restricted stock units in total. Of these, 2,917 RSUs vested on May 22, 2026, and the newly granted 2,321 RSUs reported on this Form 4 are scheduled to vest on May 21, 2027 under the incentive plan.

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

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Accepted by SEC EDGAR 05/26/2026 - 04:05 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^*

Dudley Robert W.

(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	10,528(1)	D
Class A Ordinary Shares	05/22/2026		F		708(2)	D	$69.72	9,820(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. 708 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)