Certificate of Amendment Loi canadienne sur les sociétés par actionsCanada Business Corporations Act Certificat de modification Avient Colorants Canada Inc. 942266-8 Corporate name / Dénomination sociale Corporation number / Numéro de société Raymond Edwards Date of amendment (YYYY-MM-DD) Date de modification (AAAA-MM-JJ) Director / Directeur 2021-01-15 I HEREBY CERTIFY that the articles of the above-named corporation are amended under section 178 of the Canada Business Corporations Act as set out in the attached articles of amendment. Form 4 Canada Business Corporations Act (CBCA) (s. 27 or 177) Formulaire 4 Loi canadienne sur les sociétés par actions (LCSA) (art. 27 ou 177) Articles of Amendment Clauses modificatrices Corporate name Dénomination sociale 1 Clariant Plastics & Coatings Canada Inc. Corporation number Numéro de la société 2 942266-8 The articles are amended as follows Les statuts sont modifiés de la façon suivante 3 The corporation changes its name to: La dénomination sociale est modifiée pour : Avient Colorants Canada Inc.

GEORGE INGLIS Vice President, Corporate Controller George Inglis is Vice President, Corporate Controller at Avient Corporation, an innovator of materials solutions that help customers succeed while enabling a sustainable world. These include positions in Assistant Corporate Corporate Controller; an ex-pat assignment in the UK supporting Avient’s Color business; Director of Finance for the Color, Additives & Inks segment; and, most recently, as Vice President of Internal Audit. Avient Corporation • 33587 Walker Road • Avon Lake, Ohio 44012 • 440.930.1000 • www.avient.com

Patterson, Chairman, President and Chief Executive Officer, Avient Corporation. Investor Relations Contact: Giuseppe (Joe) Di Salvo Vice President, Treasurer and Investor Relations Avient Corporation +1 440-930-1921 giuseppe.disalvo@avient.com Media Contact: Kyle G. Rose Vice President, Corporate Communications Avient Corporation +1 440-930-3162 kyle.rose@avient.com https://www.avient.com/ https://www.avient.com/news mailto:giuseppe.disalvo@avient.com mailto:kyle.rose@avient.com NEWS RELEASE

WALTER RIPPLE Vice President, Sustainability, Avient Corporation Walter Ripple is the Vice President of Sustainability at Avient Corporation, a premier provider of specialized and sustainable material solutions and services. Ripple began his current role in January 2019, leading corporate initiatives that help the company achieve critical sustainability and performance goals. Avient Corporation • 33587 Walker Road • Avon Lake, Ohio 44012 • 440.930.1000 • www.avient.com

Beggs is senior vice president and chief financial officer of Avient Corporation, a premier provider of specialized and sustainable material solutions and services. Prior to Hunt, she worked for Celanese Corporation, where she served in a variety of finance and business positions, including vice president and corporate treasurer, and earlier as chief financial officer of the materials solutions business. Avient Corporation • 33587 Walker Road • Avon Lake, Ohio 44012 • 440.930.1000 • www.avient.com https://www.avient.com/

The Board of Directors has ultimate responsibility for matters related to governance and corporate responsibility, and the Governance and Corporate Responsibility Committee provides oversight and guidance with regard to how the Board and management evaluate and integrate corporate responsibility and sustainability into Avient’s business strategy, decision-making and stakeholder communication, including this Position on Human Rights. Our health and safety policies, Avient Corporation 33587 Walker Road Avon Lake, OH 44012 2 which apply to all Avient associates, are to safeguard the health and well-being of each person while at work. Avient takes pride in our role as a responsible corporate citizen, and the importance of collaborative relationships with our many stakeholder groups.

Microsoft Word - EHS Committee Charter (Amended July 2022).doc AVIENT CORPORATION ENVIRONMENTAL, HEALTH AND SAFETY COMMITTEE CHARTER Membership • Members of the Environmental, Health and Safety Committee (the “Committee”) of the Board of Directors (the “Board”) of Avient Corporation (the “Company”) will be appointed by the Board each year The Corporate Secretary or his/her designee shall be responsible for keeping minutes of the Committee meetings The Committee will meet at least two times a year and at such other times as may be requested by its Chair. 3 • The Committee will annually review its charter and recommend any changes to the Governance and Corporate Responsibility Committee.

AVIENT CORPORATION COMPENSATION COMMITTEE CHARTER Membership • The Compensation Committee (“Committee) of the Board of Directors (“Board”) of Avient Corporation (“Company”) shall consist of a minimum of three directors. • The Committee will consist entirely of directors who the Board has determined have no material relationships with the Company, either directly or as a partner, shareholder, or officer of an organization that has a relationship with the Company, and: o who meet the definition of “independent” as set forth in the Corporate Governance Standards of the New York Stock Exchange; and o qualify as “non-employee directors” for the purposes of Rule 16b-3 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). • Each Committee member will serve at the pleasure of the Board for such term as the Board may decide or until such Committee member is no longer a Board member. The Corporate Secretary or designee will be responsible for keeping minutes of the Committee meetings The Committee will annually review its charter and recommend any changes to the Governance and Corporate Responsibility Committee.

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Microsoft Word - Sales Terms and Conditions of Sale for Japan (English and Japanese Translation) 1 TERMS AND CONDITIONS These Terms and Conditions govern the sale of Products to another (“Buyer”) by Avient Corporation and its affiliates (“Seller”). 取引条件書 この規約は Avient Corporation 及びその関係会社（以下「売主」という。） If a present or future law, governmental decree, order, regulation, or ruling under any existing or future legislation prevents Seller from increasing or revising the price as provided herein, or nullifies or reduces any price or price increase hereunder, upon written notice from one to the other Seller and Buyer will attempt to identify mutually agreeable changes to conform these Terms with such law, decree, order, regulation, or ruling.