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.

Corporate Literature Avient Code of Ethics Applicable to Senior Financial Officers Code of Ethics applicable to senior financial officers

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

Antonello Decortes, Global Product Manager at Avient Corporation. Media Contact Nicole DeChant Avient Corporation nicole.dechant@avient.com Company Officers

Avient Corporation Chairman, President and Chief Executive Officer, Avient Corporation

The Board of Directors at Avient is a cornerstone of our corporate governance, emphasizing independence and professional excellence. Each committee contributes to our sustainability efforts, with the Governance and Corporate Responsibility Committee focusing on integrating corporate responsibility and sustainability into strategic decision-making and business operations. The Chief Information Security Officer (CISO), who reports to the Chief Information Officer (CIO), leads a team of certified professionals and collaborates with third-party experts for additional assessments and trend insights.

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. • Each Committee member will serve at the pleasure of the Board for such term as the Board may decide. Committee Meetings and Action • A majority of the Committee members will be a quorum for the transaction of business. • The action of a majority of those present at a meeting at which a quorum is present will be the act of the Committee. • Any action that may be taken at a meeting of the Committee may be taken by written consent so long as the written consent is unanimously approved and filed with the Corporate Secretary. • The Company’s Senior Vice President, Global Operations and Process Improvement or his/her designee, will be the management liaison to the Committee. • 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. • 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.

PolyOne Corporation Announces Quarterly Dividend... PolyOne Corporation Announces Quarterly Dividend... Avient Company Officers

CLEVELAND – PolyOne Corporation (NYSE: POL), a premier provider of specialized polymer materials, services and solutions, today announced that Rober CLEVELAND – PolyOne Corporation (NYSE: POL) a premier provider of specialized polymer materials, services and solutions, intends to release its firs Company Officers

CLEVELAND – PolyOne Corporation (NYSE: POL), a premier provider of specialized polymer materials, services and solutions, today announced that Bradl CLEVELAND – PolyOne Corporation (NSYE: POL) a premier global provider of specialized polymer materials, services and solutions, today announced a re Company Officers