Blavatnik Len Form 4 Filed 2021-05-06

SECURITIES AND EXCHANGE COMMISSION

FORM 4 Statement of changes in beneficial ownership of securities

Filing Date: 2021-05-06 | Period of Report: 2021-05-04 SEC Accession No. 0001209191-21-030700

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REPORTING OWNER Blavatnik Len Mailing Address C/O ACCESS INDUSTRIES CIK:1326628 730 FIFTH AVENUE Type: 4 | Act: 34 | File No.: 001-34726 | Film No.: 21899373 NEW YORK NY 10019 Access Industries Holdings LLC Mailing Address Business Address C/O ACCESS INDUSTRIES C/O ACCESS INDUSTRIES CIK:1391297| State of Incorp.:DE | Fiscal Year End: 1231 MANAGEMENT, LLC. MANAGEMENT, LLC. Type: 4 | Act: 34 | File No.: 001-34726 | Film No.: 21899376 730 FIFTH AVENUE, 20TH 730 FIFTH AVENUE, 20TH FLOOR FLOOR NEW YORK NY 10019 NEW YORK NY 10019 212 247 6400 AI INVESTMENTS HOLDINGS LLC Mailing Address Business Address 730 FIFTH AVENUE 730 FIFTH AVENUE CIK:1508237| State of Incorp.:DE | Fiscal Year End: 1231 NEW YORK NY 10019 NEW YORK NY 10019 Type: 4 | Act: 34 | File No.: 001-34726 | Film No.: 21899377 2122476400 ACCESS INDUSTRIES MANAGEMENT, LLC Mailing Address Business Address 730 FIFTH AVENUE 730 FIFTH AVENUE CIK:1508226| State of Incorp.:DE | Fiscal Year End: 1231 NEW YORK NY 10019 NEW YORK NY 10019 Type: 4 | Act: 34 | File No.: 001-34726 | Film No.: 21899374 2122476400 ACCESS INDUSTRIES, LLC Mailing Address Business Address 730 FIFTH AVENUE 730 FIFTH AVENUE CIK:1508227| State of Incorp.:DE | Fiscal Year End: 1231 NEW YORK NY 10019 NEW YORK NY 10019 Type: 4 | Act: 34 | File No.: 001-34726 | Film No.: 21899375 2122476400 ISSUER LyondellBasell Industries N.V. Mailing Address Business Address 1221 MCKINNEY ST 1221 MCKINNEY ST CIK:1489393| IRS No.: 980646235 | State of Incorp.:P7 | Fiscal Year End: 1231 SUITE 700 SUITE 700 SIC: 2860 Industrial organic chemicals HOUSTON TX 77010 HOUSTON TX 77010 713-309-7603

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document FORM 4 UNITED STATES SECURITIES AND OMB APPROVAL EXCHANGE COMMISSION OMB Number: 3235-0287 ☐ Check this box if no longer Expires: 02/28/2011 subject to Section 16. Form 4 Washington, D.C. 20549 Estimated average burden or Form 5 obligations may hours per response 0.5 continue. See Instruction 1(b). STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person * 2. Issuer Name and Ticker or Trading Symbol 5. Relationship of Reporting Person(s) to Issuer AI INVESTMENTS HOLDINGS LLC LyondellBasell Industries N.V. [LYB] (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title _____ Other (specify (Last) (First) (Middle) 3. Date of Earliest Transaction (Month/Day/Year) below) below) 05/04/2021 C/O ACCESS INDUSTRIES, INC., 40 WEST 57TH STREET, 28TH FLOOR

(Street) 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing (Check applicable line) ______Form Filed by One Reporting Person NEW YORK, NY 10019 __X__ Form Filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. 2A. 3. 4. Securities Acquired (A) or 5. Amount of 6. Ownership 7. Nature of Transaction Deemed Transaction Disposed of (D) (Instr. 3, 4 and 5) Securities Form: Direct (D) Indirect Date (Month/ Execution Code (Instr. Beneficially or Indirect (I) Beneficial Day/Year) Date, if 8) Owned (Instr. 4) Ownership (Instr. any Following 4) (Month/ Reported Day/Year) (A) Transaction(s) or (Instr. 3 and Code V Amount (D) Price 4)

Ordinary shares 05/04/2021 S 131 D $108.4803 (1) 763,165 D (2) (3)

Ordinary shares 05/04/2021 S 56 D $107.4237 (4) 763,109 D (2) (3)

Ordinary shares 05/04/2021 S 7 D $106.5291 (5) 763,102 D (2) (3) By Ordinary shares (1) (3) (6) (7) (8) 05/04/2021 S 313 D $108.4803 73,390 I partnerships By Ordinary shares (4) (3) (6) (7) (8) 05/04/2021 S 133 D $107.4237 73,257 I partnerships By Ordinary shares (5) (3) (6) (7) (8) 05/04/2021 S 17 D $106.5291 73,240 I partnerships

Ordinary shares 05/04/2021 S 480 D $108.4803 (1) 41,199,137 I (3) (9) By LLC

Ordinary shares 05/04/2021 S 204 D $107.4237 (4) 41,198,933 I (3) (9) By LLC

Ordinary shares 05/04/2021 S 25 D $106.5291 (5) 41,198,908 I (3) (9) By LLC

Ordinary shares 05/04/2021 S 626,076 D $108.4803 (1) 9,271,790 I (3) (7) (10) (11) By LLCs

Ordinary shares 05/04/2021 S 266,769 D $107.4237 (4) 9,005,021 I (3) (7) (10) (11) By LLCs

Ordinary shares 05/04/2021 S 32,789 D $106.5291 (5) 8,972,232 I (3) (7) (10) (11) By LLCs

Ordinary shares 3,522,699 I (3) (13) By LLC

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities) 1. Title of 2. 3. 3A. 4. 5. 6. Date Exercisable 7. Title and 8. Price 9. Number of 10. 11. Nature Derivative Conversion Transaction Deemed Transaction Number and Expiration Date Amount of of Derivative Ownership of Indirect Security or Exercise Date Execution Code of (Month/Day/Year) Securities Derivative Securities Form of Beneficial (Instr. 3) Price of (Month/ Date, if (Instr. 8) Derivative Underlying Security Beneficially Derivative Ownership Derivative Day/Year) any Securities Derivative (Instr. 5) Owned Security: (Instr. 4) Security (Month/ Acquired Security (Instr. 3 Following Direct (D) Day/ (A) or and 4) Reported or Indirect Year) Disposed Transaction(s) (I) (Instr. of (D) (Instr. 4) 4) (Instr. 3, 4, and 5) Amount or Number Date Expiration of Code V (A) (D) Exercisable Date Title Shares

Reporting Owners Relationships Reporting Owner Name / Address Director 10% Owner Officer Other AI INVESTMENTS HOLDINGS LLC C/O ACCESS INDUSTRIES, INC. 40 WEST 57TH STREET, 28TH FLOOR X NEW YORK, NY 10019 Access Industries Holdings LLC C/O ACCESS INDUSTRIES, INC. 40 WEST 57TH STREET, 28TH FLOOR X NEW YORK, NY 10019 ACCESS INDUSTRIES, LLC C/O ACCESS INDUSTRIES, INC. 40 WEST 57TH STREET, 28TH FLOOR X NEW YORK, NY 10019 ACCESS INDUSTRIES MANAGEMENT, LLC C/O ACCESS INDUSTRIES, INC. 40 WEST 57TH STREET, 28TH FLOOR X NEW YORK, NY 10019 Blavatnik Len C/O ACCESS INDUSTRIES, INC. 40 WEST 57TH STREET, 28TH FLOOR X NEW YORK, NY 10019

Explanation of Responses: 1. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $108.920 to $107.930, inclusive. The reporting person undertakes 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 shares sold at each separate price within the ranges set forth in this footnote to this Form 4. 2. 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.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 3. 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. 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $107.880 to $106.890, inclusive. The reporting person undertakes 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 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 price. These shares were sold in multiple transactions at prices ranging from $106.880 to $106.040, inclusive. The reporting person undertakes 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 shares sold at each separate price within the ranges set forth in this footnote to this Form 4. 6. Len Blavatnik may be deemed to indirectly beneficially own the ordinary shares held directly by Altep 2010 L.P. ("Altep 2010") and Altep 2014 L.P. ("Altep 2014") because he controls AI Altep Holdings, Inc. and AI Altep Holdings, Inc. is the general partner of each of Altep 2010 and Altep 2014. 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 Altep 2010, Altep 2014, AI Altep Investments LLC (formerly AI New Holdings LLC) and AI Chemical Holdings LLC (formerly, AI New Holdings 2 LLC). 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 Altep 2010, Altep 2014, AI Altep Investments LLC and AI Chemical Holdings LLC. 8. The securities reported are held directly as follows: (i) 3,467 ordinary shares by Altep 2010 and (ii) 69,773 ordinary shares by Altep 2014. 9. The securities reported are held directly by AI International Chemicals LLC ("AIIC") 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 AIIC, 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 AIIC, and Mr. Blavatnik controls Access Industries Management, LLC and a majority of the outstanding voting interests in Access Industries, LLC. 10. Each of Access Industries Management, LLC, Access Industries Holdings LLC and Len Blavatnik may be deemed to indirectly beneficially own the ordinary shares held directly by AI Chemical Holdings LLC 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 AI Chemical Holdings LLC, and Access Industries Management, LLC controls AI Chemical Holdings LLC and Access Industries Holdings LLC. Len Blavatnik may be deemed to indirectly beneficially own the ordinary shares held directly by AI Altep Investments LLC because he controls AI Altep Holdings, Inc. and AI Altep Holdings, Inc. holds all of the outstanding voting interests in AI Altep Investments LLC. 11. The securities reported are held directly as follows: (i) 8,789,837 ordinary shares owned directly by AI Chemical Holdings LLC, and (ii) 182,395 ordinary shares owned directly by 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. 13. The securities reported are held directly by AIPH Holdings LLC ("AIPH") 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 AIPH, 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 AIPH and Mr. Blavatnik controls Access Industries Management, LLC and a majority of the outstanding voting interests in Access Industries, LLC.

Signatures /s/ Alejandro Moreno for AI Investments Holdings LLC 05/06/2021 /s/ Alejandro Moreno for Access Industries Holdings LLC 05/06/2021 /s/ Alejandro Moreno for Access Industries, LLC 05/06/2021 /s/ Alejandro Moreno for Access Industries Management, LLC 05/06/2021 /s/ Alejandro Moreno, as Attorney-in-Fact for Mr. Blavatnik 05/06/2021 ** 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).

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document ** 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.