X0306 5 2016-12-31 0 0 0 0001489393 LyondellBasell Industries N.V. LYB 0001508220 AI International Chemicals S.a r.l. 33, RUE DU PUITS ROMAIN BERTRANGE N4 L-8070 LUXEMBOURG 0 0 1 0 0001508237 AI INVESTMENTS HOLDINGS LLC C/O ACCESS INDUSTRIES, INC. 730 FIFTH AVENUE, 20TH FL NEW YORK NY 10019 0 0 1 0 0001508227 ACCESS INDUSTRIES, LLC C/O ACCESS INDUSTRIES, INC. 730 FIFTH AVENUE, 20TH FL NEW YORK NY 10019 0 0 1 0 0001391297 Access Industries Holdings LLC C/O ACCESS INDUSTRIES, INC. 730 FIFTH AVENUE, 20TH FL NEW YORK NY 10019 0 0 1 0 0001508226 ACCESS INDUSTRIES MANAGEMENT, LLC C/O ACCESS INDUSTRIES, INC. 730 FIFTH AVENUE, 20TH FL NEW YORK NY 10019 0 0 1 0 0001326628 Blavatnik Len C/O ACCESS INDUSTRIES, INC. 730 FIFTH AVENUE, 20TH FL NEW YORK NY 10019 0 0 1 0 Ordinary shares 2016-05-02 5 P 0 1 84.03 A 41144973 D Ordinary shares 16000000 I By entity Ordinary shares 20000000 I By LLC Exempt purchase pursuant to Rule 16a-6. Reflects a correction to the end of period holdings of one share. The securities reported are held directly by AI International Chemicals S.a r.l. ("AIIC") and may be deemed to be indirectly beneficially owned by AI Investments Holdings LLC ("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 holds a majority of the outstanding voting interests in AIIH, Access Industries, LLC holds 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. Each of the reporting persons (other than AIIC) disclaims beneficial ownership of the securities held directly by AIIC except to the extent of any 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. Each of the reporting persons 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. The securities reported are held directly by AI European Holdings S.a r.l. ("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 own a majority of the voting equity of entities that directly or indirectly control AIEH, Access Industries, LLC holds 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 voting interests in Access Industries, LLC. The securities reported were, at December 31, 2016, 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 holds a majority of the outstanding voting interests in AIPH Holdings LLC, Access Industries, LLC holds 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. /s/ Alejandro Moreno for AI International Chemicals S.a r.l. 2017-02-14 /s/ Alejandro Moreno for AI Investments Holdings LLC 2017-02-14 /s/ Alejandro Moreno for Access Industries, LLC 2017-02-14 /s/ Alejandro Moreno for Access Industries Holdings LLC 2017-02-14 /s/ Alejandro Moreno for Access Industries Management, LLC 2017-02-14 /s/ Alejandro Moreno, as Attorney-in-Fact for Mr. Blavatnik 2017-02-14