PolyOne Corporation PolyOne Corporation PolyOne Corporation

Patterson, president and chief executive officer, PolyOne Corporation. Richardson, executive vice president and chief financial officer, PolyOne Corporation said, “We continued our strong track record of converting earnings to cash, generating approximately $95 million in free cash flow in the quarter. Company Officers

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. 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. James Original signed by / Original signé par 4 Declaration: I certify that I am a director or an officer of the corporation.

ColorMatrix Europe Limited is a wholly owned indirect subsidiary of Avient Corporation, a U.S. publicly-traded corporation listed on the New York Stock Exchange with global headquarters in Avon Lake, Ohio, United States. Avient currently does not engage in verification of its supply chains to evaluate and address risks of human trafficking and slavery, nor does it currently conduct audits of its suppliers’ compliance with company standards for trafficking and slavery in supply chains. Our procurement and compliance teams will continue to focus on identifying and addressing any potential risks in our supply chain and the business will continue to provide awareness and training to all of its employees.

Avient Corporation was originally established as PolyOne Corporation in 2000 through the consolidation of two companies in the materials industry. Avient Corporation (NYSE: AVNT), with 2023 revenues of $3.1 billion, is a leading provider of specialized and sustainable materials solutions.

Q3 Avient Corporation Earnings Conference Call Q2 Avient Corporation Earnings Conference Call Avient Company Officers

Polyone Corporation Shareholders Meeting Q1 2010 Polyone Corporation Earnings Conference Call Avient Company Officers

Q4 2018 PolyOne Corporation Earnings Conference Call Q3 2018 PolyOne Corporation Earnings Conference Call Avient Company Officers

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 Committee may appoint subcommittees from time to time as needed, and may delegate authority to such subcommittees or to officers of the Company when appropriate, consistent with applicable laws, regulations and listing standards The Corporate Secretary or his/her designee shall be responsible for keeping minutes of the Committee meetings

PolyOne Corporation president and chief executive officer, executive vice president and chief financial officer,