Access entities trim LyondellBasell (NYSE: LYB) stake and gift shares

Rhea-AI Filing Summary

Entities affiliated with Access Industries reported multiple transactions in LyondellBasell Industries N.V. ordinary shares. On March 9, 2026, Access Industries Core Holdings LLC donated 464,610 shares for no consideration as a charitable contribution.

On the same date, affiliated entities sold an aggregate of 385,390 ordinary shares in open-market transactions at weighted average prices ranging from about $66.72 to $69.19 per share. After these sales, one indirect account held 5,270,918 shares and a related direct account held 765,154 shares, while other affiliated entities reported substantial additional indirect holdings. The reporting persons generally disclaim beneficial ownership beyond their pecuniary interest in these securities.

Insights

Insider transactions analyst

Access-affiliated holders sold shares but retain a very large stake.

Investment entities associated with Access Industries and Len Blavatnik reported open-market sales of 385,390 LyondellBasell ordinary shares on March 9, 2026, at weighted average prices between roughly $66.72 and $69.19 per share. These are straightforward secondary-market disposals.

The same group reported a charitable gift of 464,610 shares by Access Industries Core Holdings LLC for no consideration. Despite these transactions, affiliated entities still report sizeable positions, including 5,270,918 shares in one indirect account, 765,154 shares directly, and other large indirect blocks such as 41,195,179 shares held by a related LLC.

Given the remaining exposure and the absence of derivative exercises or leverage shifts, these actions look like portfolio management and philanthropy rather than a structural change in commitment. The reporting persons also explicitly disclaim beneficial ownership beyond their pecuniary interest, underscoring the complex entity structure behind these holdings.

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^*

AI INVESTMENTS HOLDINGS LLC

(Last) (First) (Middle)

C/O ACCESS INDUSTRIES, INC.

40 WEST 57TH STREET, 28TH FLOOR

(Street)

NEW YORK NY 10019

(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	X	10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
03/09/2026

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

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

	Form filed by One Reporting Person
X	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
Ordinary shares	03/09/2026		G		464,610	D	$0(1)	1,000,000	I(2)(3)	By LLC
Ordinary shares	03/09/2026		S		80,679	D	$67.0333(4)	5,574,787	I(2)(7)(8)	By LLC
Ordinary shares	03/09/2026		S		177	D	$67.0333(4)	765,819	D(2)(9)
Ordinary shares	03/09/2026		S		189,277	D	$68.1317(5)	5,385,510	I(2)(7)(8)	By LLC
Ordinary shares	03/09/2026		S		414	D	$68.1317(5)	765,405	D(2)(9)
Ordinary shares	03/09/2026		S		114,592	D	$68.8997(6)	5,270,918	I(2)(7)(8)	By LLC
Ordinary shares	03/09/2026		S		251	D	$68.8997(6)	765,154	D(2)(9)
Ordinary shares								41,195,179	I(2)(10)	By LLC
Ordinary shares								204,253	I(2)(7)(11)	By LLC
Ordinary shares								16,000,000	I(2)(12)	By partnership

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

1. Name and Address of Reporting Person^*

AI INVESTMENTS HOLDINGS LLC

(Last) (First) (Middle)

C/O ACCESS INDUSTRIES, INC.

40 WEST 57TH STREET, 28TH FLOOR

(Street)

NEW YORK NY 10019

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Access Industries Holdings LLC

(Last) (First) (Middle)

C/O ACCESS INDUSTRIES, INC.

40 WEST 57TH STREET, 28TH FLOOR

(Street)

NEW YORK NY 10019

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

ACCESS INDUSTRIES, LLC

(Last) (First) (Middle)

C/O ACCESS INDUSTRIES, INC.

40 WEST 57TH STREET, 28TH FLOOR

(Street)

NEW YORK NY 10019

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

ACCESS INDUSTRIES MANAGEMENT, LLC

(Last) (First) (Middle)

C/O ACCESS INDUSTRIES, INC.

40 WEST 57TH STREET, 28TH FLOOR

(Street)

NEW YORK NY 10019

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Blavatnik Len

(Last) (First) (Middle)

C/O ACCESS INDUSTRIES, INC.

40 WEST 57TH STREET, 28TH FLOOR

(Street)

NEW YORK NY 10019

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

Explanation of Responses:

1. These shares were donated by Access Industries Core Holdings LLC (formerly AIPH Holdings LLC) ("AICH") for no consideration as a charitable contribution.

2. Each of the reporting persons (other than the direct holder) disclaims beneficial ownership of these securities, except to the extent of its or his pecuniary interest therein, and this Form shall not be construed as an admission that any such reporting person is the beneficial owner of any such securities.

3. The securities reported are held directly by AICH and may be deemed to be indirectly beneficially owned by Access Industries, LLC, Access Industries Holdings LLC, Access Industries Management, LLC and Len Blavatnik because Access Industries Holdings LLC controls a majority of the outstanding voting interests in AICH, Access Industries, LLC controls a majority of the outstanding voting interests in Access Industries Holdings LLC, Access Industries Management, LLC controls Access Industries, LLC, Access Industries Holdings LLC and AICH and Mr. Blavatnik controls Access Industries Management, LLC and a majority of the outstanding voting interests in Access Industries, LLC.

4. The price reported in Column 4 is a weighted average sales price of the ordinary shares. The ordinary shares were sold in multiple transactions ranging from $66.72 to $67.7193 inclusive. The reporting persons undertake to provide to LyondellBasell Industries N.V., any security holder of LyondellBasell Industries N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of ordinary shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

5. The price reported in Column 4 is a weighted average sales price of the ordinary shares. The ordinary shares were sold in multiple transactions ranging from $67.72 to $68.715 inclusive. The reporting persons undertake to provide to LyondellBasell Industries N.V., any security holder of LyondellBasell Industries N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of ordinary shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

6. The price reported in Column 4 is a weighted average sales price of the ordinary shares. The ordinary shares were sold in multiple transactions ranging from $68.72 to $69.19 inclusive. The reporting persons undertake to provide to LyondellBasell Industries N.V., any security holder of LyondellBasell Industries N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of ordinary shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

7. Because of their relationships with the other reporting persons, each of Access Industries Holdings LLC, Access Industries, LLC and Access Industries Management, LLC may be deemed to beneficially own the ordinary shares held directly by AI Altep Investments LLC (formerly AI New Holdings LLC) and AI Chemical Holdings LLC (formerly, AI New Holdings 2 LLC) ("AICH"). Each of the reporting persons, and each of their affiliated entities and the officers, partners, members, and managers thereof, disclaims beneficial ownership of the ordinary shares held directly by each of AI Altep Investments LLC and AICH.

8. The securities reported are held directly by AICH and may be deemed to be indirectly beneficially owned by Access Industries Management, LLC, Access Industries Holdings LLC and Len Blavatnik because Mr. Blavatnik controls Access Industries Management, LLC, Access Industries Holdings LLC owns a majority of the outstanding voting interests in RSB 2 Limited which is the sole member of AICH, and Access Industries Management, LLC controls AICH and Access Industries Holdings LLC.

9. The securities reported are held directly by AI Investments Holdings LLC ("AIIH") and may be deemed to be indirectly beneficially owned by Access Industries, LLC, Access Industries Holdings LLC, Access Industries Management, LLC and Len Blavatnik because Access Industries Holdings LLC controls a majority of the outstanding voting interests in AIIH, Access Industries, LLC controls a majority of the outstanding voting interests in Access Industries Holdings LLC, Access Industries Management, LLC controls Access Industries, LLC, Access Industries Holdings LLC and AIIH, and Mr. Blavatnik controls Access Industries Management, LLC and a majority of the outstanding voting interests in Access Industries, LLC.

10. The securities reported are held directly by LYB Holdco LLC (formerly AI International Chemicals LLC) ("LYB Holdco") and may be deemed to be indirectly beneficially owned by AIIH, Access Industries, LLC, Access Industries Holdings LLC, Access Industries Management, LLC and Len Blavatnik because AIIH holds a majority of the outstanding voting interests in LYB Holdco, Access Industries Holdings LLC controls a majority of the outstanding voting interests in AIIH, Access Industries, LLC controls a majority of the outstanding voting interests in Access Industries Holdings LLC, Access Industries Management, LLC controls Access Industries, LLC, Access Industries Holdings LLC, AIIH and LYB Holdco, and Mr. Blavatnik controls Access Industries Management, LLC and a majority of the outstanding voting interests in Access Industries, LLC.

11. The securities reported are held directly by AI Altep Investments LLC and may be deemed to be indirectly beneficially owned by Len Blavatnik because he controls AI Altep Holdings, Inc. and AI Altep Holdings, Inc. holds all of the outstanding voting interests in AI Altep Investments LLC.

12. The securities reported are held directly by AI European Holdings L.P. ("AIEH") and may be deemed to be indirectly beneficially owned by Access Industries Holdings LLC, Access Industries, LLC, Access Industries Management, LLC, and Len Blavatnik because Access Industries Holdings LLC, Access Industries, LLC and Access Industries Management, LLC control, or hold a majority of the outstanding voting interests in, entities that directly or indirectly control AIEH, Access Industries, LLC controls a majority of the outstanding voting interests in Access Industries Holdings LLC, Access Industries Management, LLC controls Access Industries, LLC and Access Industries Holdings LLC and Mr. Blavatnik controls Access Industries Management, LLC and a majority of the outstanding voting interests in Access Industries, LLC.

	/s/ Alejandro Moreno for AI Investments Holdings LLC	03/11/2026
	/s/ Alejandro Moreno for Access Industries Holdings LLC	03/11/2026
	/s/ Alejandro Moreno for Access Industries, LLC	03/11/2026
	/s/ Alejandro Moreno for Access Industries Management LLC	03/11/2026
	/s/ Alejandro Moreno as Attorney-in-Fact for Mr. Blavatnik	03/11/2026
	** 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.

FAQ

What insider activity did Access-affiliated holders report for LyondellBasell (LYB)?

Affiliated investment entities reported selling 385,390 LyondellBasell ordinary shares in open-market transactions and donating 464,610 shares as a charitable contribution. The sales occurred on March 9, 2026, at weighted average prices between about $66.72 and $69.19 per share, with large holdings remaining afterward.

How many LyondellBasell (LYB) shares were donated and by whom?

Access Industries Core Holdings LLC donated 464,610 LyondellBasell ordinary shares for no consideration as a charitable contribution. The filing notes this transfer as a bona fide gift, and the reporting persons generally disclaim beneficial ownership beyond their pecuniary interest in the donated securities.

At what prices did Access-affiliated entities sell LyondellBasell (LYB) shares?

The reported sales used weighted average prices per share around $67.03, $68.13, and $68.90. Footnotes explain that underlying trades occurred in ranges from $66.72 up to $69.19, and the filers offer to provide detailed trade-by-trade price breakdowns upon request to investors or regulators.

How many LyondellBasell (LYB) shares do Access-related entities still hold after these transactions?

Post-transaction, one indirect account shows 5,270,918 shares and a related direct account shows 765,154 shares. Separate holding entries list additional indirect positions such as 41,195,179 shares, 204,253 shares, and 16,000,000 shares in other affiliated entities, though ownership is disclaimed outside pecuniary interest.

Do the Access-affiliated filers claim full beneficial ownership of their LyondellBasell (LYB) shares?

No. The filing states that each reporting person, other than the direct holders, disclaims beneficial ownership of the securities except to the extent of its or his pecuniary interest. This reflects the layered structure of LLCs and partnerships that directly hold the LyondellBasell ordinary shares.