# EDGAR Filing Document

**Accession Number:** 0001489393
**File Stem:** 0000950170-25-085065
**Filing Date:** 2025-6
**Character Count:** 31804
**Document Hash:** a0dc2537e9a1846c27d82409feec015b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000950170-25-085065.hdr.sgml**: 20250611

**ACCESSION NUMBER**: 0000950170-25-085065

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D/A

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20250611

**DATE AS OF CHANGE**: 20250611

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** LyondellBasell Industries N.V.
- **CENTRAL INDEX KEY:** 0001489393
- **STANDARD INDUSTRIAL CLASSIFICATION:** INDUSTRIAL ORGANIC CHEMICALS [2860]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 980646235
- **STATE OF INCORPORATION:** P7
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-85725
- **FILM NUMBER:** 251041514

**BUSINESS ADDRESS:**
- **STREET 1:** 1221 MCKINNEY ST
- **STREET 2:** SUITE 300
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77010
- **BUSINESS PHONE:** 713-309-7603

**MAIL ADDRESS:**
- **STREET 1:** 1221 MCKINNEY ST
- **STREET 2:** SUITE 300
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77010
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** LYB Holdco LLC
- **CENTRAL INDEX KEY:** 0001508220

**ORGANIZATION NAME:**
- **EIN:** 980657156
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A

**BUSINESS ADDRESS:**
- **STREET 1:** 40 WEST 57TH STREET
- **STREET 2:** 28TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10019
- **BUSINESS PHONE:** 212.247.6400

**MAIL ADDRESS:**
- **STREET 1:** 40 WEST 57TH STREET
- **STREET 2:** 28TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10019

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** AI International Chemicals LLC
- **DATE OF NAME CHANGE:** 20191106

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** AI International Chemicals S.a r.l.
- **DATE OF NAME CHANGE:** 20170110

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** AI Internaitonal Chemicals S.a r.l.
- **DATE OF NAME CHANGE:** 20170109

### Attached PDF Documents

**Attachment 1:** `ck0000000000-ex99_1.pdf`

EXHIBIT 99.1.19

# JOINT FILING AGREEMENT

The undersigned hereby agree that they are filing this statement jointly pursuant to Rule 13d-1(k)(1). Each of them is responsible for the timely filing of such Schedule 13D and any amendments thereto, and for the completeness and accuracy of the information concerning such person contained therein; but none of them is responsible for the completeness or accuracy of the information concerning the other persons making the filing, unless such person knows or has reason to believe that such information is inaccurate.

In accordance with Rule 13d-1(k)(1) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing with each other on behalf of each of them of such a statement on Schedule 13D (and any amendments thereto) with respect to the ordinary shares beneficially owned by each of them, of LyondellBasell Industries N.V., a public limited liability company incorporated under the laws of the Netherlands. This Joint Filing Agreement shall be included as an exhibit to such Schedule 13D.

IN WITNESS WHEREOF, the undersigned hereby execute this Joint Filing Agreement as of the 11th day of June, 2025.

ACCESS INDUSTRIES HOLDINGS LLC
By: Access Industries Management, LLC, its Manager
/s/ Alejandro Moreno
Name: Alejandro Moreno
Title: Executive Vice President

ACCESS INDUSTRIES MANAGEMENT, LLC
/s/ Alejandro Moreno
Name: Alejandro Moreno
Title: Executive Vice President

LYB HOLDCO LLC
By: Access Industries Management, LLC, its Manager
/s/ Alejandro Moreno
Name: Alejandro Moreno
Title: Executive Vice President

AI INVESTMENTS HOLDINGS LLC
By: Access Industries Management, LLC, its Manager
/s/ Alejandro Moreno
Name: Alejandro Moreno
Title: Executive Vice President

ACCESS INDUSTRIES, LLC

By: Access Industries Management, LLC, its Manager

/s/ Alejandro Moreno
Name: Alejandro Moreno
Title: Executive Vice President

*

Name: Len Blavatnik

* The undersigned, by signing his name hereto, executes this Schedule 13D pursuant to the Power of Attorney executed on behalf of Mr. Blavatnik and filed herewith.

By: /s/ Alejandro Moreno
Name: Alejandro Moreno
Attorney-in-Fact

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**(Amendment No. 19)**

**LyondellBasell Industries N.V.**

*(Name of Issuer)*

**Ordinary shares, par value Euro 0.04 per share**

*(Title of Class of Securities)*

**N53745100**

*(CUSIP Number)*

**Alejandro Moreno; Langhorne P.**<br>c/o Access Industries, Inc.<br>40 West 57th Street, 28th Floor<br>New York NY 10019<br>(212) 247-6400

*(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)*

**06/11/2025**

*(Date of Event Which Requires Filing of this Statement)*

| **CUSIP No.** | **N53745100** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**LYB Holdco LLC** | Name of reporting person<br>**LYB Holdco LLC** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**AF** | Source of funds (See Instructions)<br>**AF** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**N4** | Citizenship or place of organization<br>**N4** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**41195179.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**24090325.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**41195179.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**24090325.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**65285504.00** | Aggregate amount beneficially owned by each reporting person<br>**65285504.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**20.3%** | Percent of class represented by amount in Row (11)<br>**20.3%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

**Comment for Reporting Person:** All percentages are based on an aggregate of 321,400,014 ordinary shares issued and outstanding as of April 23, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2025, filed by the Issuer on April 25, 2025.

| **CUSIP No.** | **N53745100** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Len Blavatnik** | Name of reporting person<br>**Len Blavatnik** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**AF** | Source of funds (See Instructions)<br>**AF** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**X1** | Citizenship or place of organization<br>**X1** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**65285504.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**65285504.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**65285504.00** | Aggregate amount beneficially owned by each reporting person<br>**65285504.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**20.3%** | Percent of class represented by amount in Row (11)<br>**20.3%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Comment for Reporting Person:** All percentages are based on an aggregate of 321,400,014 ordinary shares issued and outstanding as of April 23, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2025, filed by the Issuer on April 25, 2025.

| **CUSIP No.** | **N53745100** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Access Industries, LLC** | Name of reporting person<br>**Access Industries, LLC** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**AF** | Source of funds (See Instructions)<br>**AF** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**65285504.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**65285504.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**65285504.00** | Aggregate amount beneficially owned by each reporting person<br>**65285504.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**20.3%** | Percent of class represented by amount in Row (11)<br>**20.3%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

**Comment for Reporting Person:** All percentages are based on an aggregate of 321,400,014 ordinary shares issued and outstanding as of April 23, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2025, filed by the Issuer on April 25, 2025.

| **CUSIP No.** | **N53745100** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Access Industries Holdings LLC** | Name of reporting person<br>**Access Industries Holdings LLC** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**AF** | Source of funds (See Instructions)<br>**AF** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**65285504.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**65285504.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**65285504.00** | Aggregate amount beneficially owned by each reporting person<br>**65285504.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**20.3%** | Percent of class represented by amount in Row (11)<br>**20.3%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

**Comment for Reporting Person:** All percentages are based on an aggregate of 321,400,014 ordinary shares issued and outstanding as of April 23, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2025, filed by the Issuer on April 25, 2025.

| **CUSIP No.** | **N53745100** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Access Industries Management, LLC** | Name of reporting person<br>**Access Industries Management, LLC** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**AF** | Source of funds (See Instructions)<br>**AF** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**65285504.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**65285504.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**65285504.00** | Aggregate amount beneficially owned by each reporting person<br>**65285504.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**20.3%** | Percent of class represented by amount in Row (11)<br>**20.3%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

**Comment for Reporting Person:** All percentages are based on an aggregate of 321,400,014 ordinary shares issued and outstanding as of April 23, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2025, filed by the Issuer on April 25, 2025.

| **CUSIP No.** | **N53745100** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**AI Investments Holdings LLC** | Name of reporting person<br>**AI Investments Holdings LLC** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**AF** | Source of funds (See Instructions)<br>**AF** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**765996.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**64519508.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**765996.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**64519508.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**65285504.00** | Aggregate amount beneficially owned by each reporting person<br>**65285504.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**20.3%** | Percent of class represented by amount in Row (11)<br>**20.3%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

**Comment for Reporting Person:** All percentages are based on an aggregate of 321,400,014 ordinary shares issued and outstanding as of April 23, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2025, filed by the Issuer on April 25, 2025.

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
Ordinary shares, par value Euro 0.04 per share

**(b) Name of Issuer:**
LyondellBasell Industries N.V.

**(c) Address of Issuer's Principal Executive Offices:**
1221 MCKINNEY ST, SUITE 300, Houston, TX, 77010

This amendment to Schedule 13D is being filed by LYB Holdco LLC ("LYB Holdco"), Len Blavatnik, Access Industries, LLC, Access Industries Holdings LLC, Access Industries Management, LLC and AI Investments Holdings LLC ("AIIH") (collectively, the "Reporting Persons", and each, a "Reporting Person") to report changes in beneficial ownership of the Reporting Persons in the ordinary shares of LyondellBasell Industries N.V. (the "Issuer").

The Schedule 13D (the "Schedule") filed with the Securities and Exchange Commission on January 10, 2011, as amended and supplemented by Amendment No. 1, filed on February 23, 2011, Amendment No. 2, filed on February 16, 2012, Amendment No. 3, filed on December 17, 2012, Amendment No. 4, filed on August 5, 2013, Amendment No. 5, filed on December 31, 2014, Amendment No. 6, filed on June 10, 2015, Amendment No. 7, filed on March 17, 2016, Amendment No. 8, filed on February 6, 2017, Amendment No. 9, filed on February 14, 2017, Amendment No. 10, filed on January 8, 2018, Amendment No. 11, filed on November 14, 2018, Amendment No. 12, filed on July 15, 2019, Amendment No. 13, filed on November 8, 2019, Amendment No. 14 filed on February 18, 2021, Amendment No. 15 filed on May 6, 2021, Amendment No. 16 filed on November 17, 2022, Amendment No. 17 filed on November 21, 2022, and Amendment No. 18 filed on August 10, 2023 is hereby amended and supplemented by the Reporting Persons as set forth below in this Amendment No. 19. This amendment is filed by the Reporting Persons in accordance with Rule 13d-2 of the Securities Exchange Act of 1934, as amended, and refers only to information that has materially changed since the filing of the Schedule 13D. The items identified below, or the particular paragraphs of such items which are identified below, are amended as set forth below. Unless otherwise indicated, all capitalized terms used and not defined herein have the respective meanings assigned to them in the Schedule.

**Item 5. Interest in Securities of the Issuer**

**(a)**
The disclosure in Item 5(a) is hereby amended and restated in its entirety to read as follows:

The responses of each of the Reporting Persons with respect to Rows 11, 12, and 13 of the cover pages of this Schedule 13D that relate to the aggregate number and percentage of ordinary shares (including, but not limited to, footnotes to such information) are incorporated herein by reference.

The responses of each of the Reporting Persons with respect to Rows 7, 8, 9, and 10 of the cover pages of this Schedule 13D that relate to the number of ordinary shares as to which each of the persons or entities referenced in Item 2 above has sole or shared power to vote or to direct the vote of and sole or shared power to dispose of or to direct the disposition of (including, but not limited to, footnotes to such information) are incorporated herein by reference.

The 65,285,504 ordinary shares reported in this Schedule 13D include (i) 41,195,179 ordinary shares owned directly by LYB Holdco, (ii) 1,464,610 ordinary shares owned directly by Access Industries Core Holdings LLC (formerly AIPH Holdings LLC), (iii) 16,000,000 ordinary shares owned directly by AI European Holdings L.P. ("AIEH"), (iv) 5,655,466 ordinary shares owned directly by AI Chemical Holdings LLC, (v) 765,996 ordinary shares owned directly by AIIH, and (vi) 204,253 ordinary shares owned directly by AILEB LLC (formerly AI Altep Investments LLC).

Each of AIIH, Access Industries, LLC, Access Industries Holdings LLC, Access Industries Management, LLC and Len Blavatnik may be deemed to beneficially own, and share investment and voting power over, the ordinary shares held directly by LYB Holdco because (i) Mr. Blavatnik controls Access Industries Management, LLC and a majority of the outstanding voting interests in Access Industries, LLC, (ii) Access Industries Management, LLC controls Access Industries, LLC, Access Industries Holdings LLC and AIIH, which controls a majority of the outstanding voting interests in LYB Holdco, and (iii) Access Industries Holdings LLC controls a majority of the outstanding voting interests in AIIH. Each of the Reporting Persons and each of their affiliated entities and the officers, partners, members, and managers thereof, other than LYB Holdco, disclaims beneficial ownership of the shares held directly by LYB Holdco.

Each of Access Industries, LLC, Access Industries Holdings LLC, Access Industries Management, LLC and Len Blavatnik may be deemed to beneficially own and share voting and investment power over the ordinary shares held directly by Access Industries Core Holdings LLC because (i) Access Industries Holdings LLC controls a majority of the outstanding voting interests in Access Industries Core Holdings LLC, (ii) Access Industries, LLC controls a majority of the outstanding voting interests in Access Industries Holdings LLC, (iii) Access Industries Management, LLC controls Access Industries, LLC, Access Industries Holdings LLC and Access Industries Core Holdings LLC, and (iv) Mr. Blavatnik controls Access Industries Management, LLC and a majority of the outstanding voting interests in Access Industries, LLC. Because of its relationships with the other Reporting Persons, LYB Holdco may be deemed to share investment and voting power over the ordinary shares held directly by Access Industries Core Holdings LLC. Each of the Reporting Persons and each of their affiliated entities and the officers, partners, members, and managers thereof, other than Access Industries Core Holdings LLC, disclaims beneficial ownership of the ordinary shares held directly by Access Industries Core Holdings LLC.

Each of Access Industries, LLC, Access Industries Holdings LLC, Access Industries Management, LLC and Len Blavatnik may be deemed to beneficially own and share voting and investment power over the ordinary shares held directly by AIEH because (i) Mr. Blavatnik controls Access Industries Management, LLC and a majority of the voting interests in Access Industries, LLC, (ii) Access Industries Management, LLC controls Access Industries, LLC, Access Industries Holdings LLC and Access Industries Investment Holdings LLC, (iii) Access Industries, LLC owns and controls AI SMS GP Limited, which owns and controls AI European GP Limited, which is the general partner of AIEH, and (iv) Access Industries Holdings LLC owns and controls a majority of the outstanding voting interests in Access Industries Investments Holdings LLC, which owns and controls a majority of the outstanding voting interests in AIEH. Each of the Reporting Persons, and each of their affiliated entities and the officers, partners, members, and managers thereof, other than AIEH, disclaims beneficial ownership of the ordinary shares held by AIEH.

Len Blavatnik may be deemed to beneficially own, and share investment and voting power over, the ordinary shares held directly by AILEB LLC because (i) he controls AI Altep Holdings, Inc. and (ii) AI Altep Holdings, Inc. owns all of the membership interests in AILEB LLC. Each of the Reporting Persons, and each of their affiliated entities and the officers, partners, members, and managers thereof, other than AILEB LLC, disclaims beneficial ownership of the ordinary shares held directly by AILEB LLC.

Each of Access Industries Management, LLC, Access Industries Holdings LLC and Len Blavatnik may be deemed to beneficially own and share voting and investment power over the ordinary shares held directly by AI Chemical Holdings LLC because (i) Mr. Blavatnik controls Access Industries Management, LLC, (ii) Access Industries Holdings LLC owns a majority of the membership interests in RSB 2 Limited, which is the sole member of AI Chemical Holdings LLC, and (iii) Access Industries Management, LLC controls AI Chemical Holdings LLC. Because of their relationships with the other Reporting Persons, each of LYB Holdco and Access Industries, LLC may be deemed to share investment and voting power over the ordinary shares held directly by AI Chemical Holdings LLC. Each of the Reporting Persons, and each of their affiliated entities and the officers, partners, members, and managers thereof, other than AI Chemical Holdings LLC, disclaims beneficial ownership of the shares held by AI Chemical Holdings LLC.

Each of Access Industries, LLC, Access Industries Holdings LLC, Access Industries Management, LLC and Len Blavatnik may be deemed to beneficially own, and share investment and voting power over, the ordinary shares held directly by AIIH because (i) Access Industries Holdings LLC controls a majority of the outstanding voting interests in AIIH, (ii) Access Industries, LLC controls a majority of the outstanding voting interests in Access Industries Holdings LLC, (iii) Access Industries Management, LLC controls Access Industries, LLC, Access Industries Holdings LLC and AIIH, and (iv) Mr. Blavatnik controls Access Industries Management, LLC and a majority of the outstanding voting interests in Access Industries, LLC. Each of the Reporting Persons and each of their affiliated entities and the officers, partners, members, and managers thereof, other than AIIH, disclaims beneficial ownership of the ordinary shares held directly by AIIH.

**(b)**
In addition to the description set forth above in Item 5(a), see the cover pages of this Schedule 13D for a description of the respective voting powers and disposition powers of the Reporting Persons.

**(c)**
—

**Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer.**

The disclosure in Item 6 is hereby supplemented by adding the following:

On June 9, 2025, AI Securities Holdings 1 LLC ("AISH"), an affiliate of Access Industries, LLC that is indirectly controlled by Len Blavatnik, entered into a cash-settled European-style capped-call agreement (the "Capped-Call Agreement") with an unaffiliated third party financial institution. The Capped-Call Agreement provides AISH with economic results that are comparable to ownership of a call option in respect of up to 13,300,000 ordinary shares, with a premium, strike price and cap price based on pre-determined formulas, which take into account such financial institution's hedging activity through June 13, 2025 (such strike and cap amounts, as well as other variables of the Capped-Call Agreement, also subject to adjustments in certain circumstances, including dividends paid by the Issuer). The Capped-Call Agreement is exercisable in 30 separate tranches, with staggered expirations in successive days, beginning June 7, 2030. As settlement of the Capped-Call Agreement is in cash only, neither AISH, nor any of the Reporting Persons, nor any of their affiliated entities and the officers, partners, members, and managers thereof, shall be deemed to beneficially own the ordinary shares referenced thereunder.

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** LYB Holdco LLC

**Signature:** /s/ Alejandro Moreno

**Name/Title:** By: Access Industries Management, LLC, its Manager; its Executive Vice President/Alejandro Moreno

**Date:** 06/11/2025

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Len Blavatnik

**Signature:** *

**Name/Title:** Len Blavatnik

**Date:** 06/11/2025

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Access Industries, LLC

**Signature:** /s/ Alejandro Moreno

**Name/Title:** By: Access Industries Management, LLC, its Manager; its Executive Vice President/Alejandro Moreno

**Date:** 06/11/2025

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Access Industries Holdings LLC

**Signature:** /s/ Alejandro Moreno

**Name/Title:** By: Access Industries Management, LLC, its Manager; its Executive Vice President/Alejandro Moreno

**Date:** 06/11/2025

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Access Industries Management, LLC

**Signature:** /s/ Alejandro Moreno

**Name/Title:** By: Executive Vice President/Alejandro Moreno

**Date:** 06/11/2025

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** AI Investments Holdings LLC

**Signature:** /s/ Alejandro Moreno

**Name/Title:** By: Access Industries Management, LLC, its Manager; its Executive Vice President/Alejandro Moreno

**Date:** 06/11/2025