Sec Form 4 Filing - ACCESS INDUSTRIES, LLC @ LyondellBasell Industries N.V. - 2025-06-13

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

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, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person ACCESS INDUSTRIES, LLC 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) (Last) (First) (Middle) C/O ACCESS INDUSTRIES, INC., 40 WEST 57TH STREET, 28TH FLOOR 3. Date of Earliest Transaction (MM/DD/YY) 06/13/2025 (Street) NEW YORK, NY10019 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ 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. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 7. Title and Amount of Underlying Securities (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 of Derivative Security: 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 Capped Call ( 1 ) ( 2 ) $ 79.9887 ( 1 ) ( 2 ) 06/13/2025 P 30 ( 1 )( 2 ) ( 1 )( 2 ) Ordinary shares 270,737 $ 1,196,560.78 30 I ( 1 ) ( 2 ) See footnote ( 1 ) ( 2 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other ACCESS INDUSTRIES, LLC C/O ACCESS INDUSTRIES, INC. 40 WEST 57TH STREET, 28TH FLOOR NEW YORK, NY10019 X AI INVESTMENTS HOLDINGS LLC C/O ACCESS INDUSTRIES, INC. 40 WEST 57TH STREET, 28TH FLOOR NEW YORK, NY10019 X Access Industries Holdings LLC C/O ACCESS INDUSTRIES, INC. 40 WEST 57TH STREET, 28TH FLOOR NEW YORK, NY10019 X ACCESS INDUSTRIES MANAGEMENT, LLC C/O ACCESS INDUSTRIES, INC. 40 WEST 57TH STREET, 28TH FLOOR NEW YORK, NY10019 X Blavatnik Len C/O ACCESS INDUSTRIES, INC. 40 WEST 57TH STREET, 28TH FLOOR NEW YORK, NY10019 X Signatures /s/ Alejandro Moreno for Access Industries, LLC 06/13/2025 Signature of Reporting Person Date /s/ Alejandro Moreno for AI Investments Holdings LLC 06/13/2025 Signature of Reporting Person Date /s/ Alejandro Moreno for Access Industries Holdings LLC 06/13/2025 Signature of Reporting Person Date /s/ Alejandro Moreno for Access Industries Management, LLC 06/13/2025 Signature of Reporting Person Date /s/ Alejandro Moreno, as Attorney-in-Fact for Mr. Blavatnik 06/13/2025 Signature of Reporting Person Date

Explanation of Responses:

( 1 )AI Securities Holdings 1 LLC ("AISH"), an affiliate of Access Industries, LLC that is indirectly controlled by Len Blavatnik, is party to a cash-settled European-style capped-call agreement (the "Capped-Call Agreement") with an unaffiliated third party financial institution, the final terms of which were set on June 13, 2025. The Capped-Call Agreement provides AISH with economic results that are comparable to ownership of a call option in respect of 8,122,120 ordinary shares, at a per share premium of $4.4196, with a strike price $79.9887 per share and cap price of $122.6493 per share (such amounts, subject to adjustments in certain circumstances, including dividends paid by the Issuer). ( 2 )The Capped-Call Agreement is exercisable in 30 separate tranches of 270,737 shares each (other than the first tranche, of 270,747 shares), 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.

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).

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