CORPORATE GOVERNANCE PROXY STATEMENT 2025 | Annual Meeting of Shareholders 30 Code of Ethics, Code of Conduct and Corporate Governance Guidelines In accordance with applicable NYSE listing standards and SEC regulations, the Board has adopted a Code of Ethics, Code of Conduct and Corporate Governance Guidelines. Deferrals under Internal Revenue Code tax-qualified plans, such as a 401(k) plan, do not affect our current tax deduction. The Avient Supplemental Retirement Benefit Plan is also subject to the rules of Code Section 409A, which restricts the timing of distributions.

Suppliers are expected to comply with our Supplier Code of Conduct. Suppliers are expected to comply with our Supplier Code of Conduct. Suppliers are expected to comply with our Supplier Code of Conduct.

CORPORATE GOVERNANCE PROXY STATEMENT 2023 | Annual Meeting of Shareholders 47 CODE OF ETHICS, CODE OF CONDUCT AND CORPORATE GOVERNANCE GUIDELINES In accordance with applicable NYSE listing standards and SEC regulations, the Board has adopted a Code of Ethics, Code of Conduct and Corporate Governance Guidelines. f) “Code” means the Internal Revenue Code of 1986, as amended from time to time, and the regulations thereunder, as such law and regulations may be amended from time to time. Compliance with Section 409A of the Code.

Ethics - Code of Conduct Avient has its own ethics policy – The Avient Code of Conduct which establishes a clear set of ethical and behavioral standards for business conduct by all Avient associates. The Avient code of conduct is available here. Information that Avient considers as confidential and will not communicate through questionnaires:  Building and facilities figures  Workforce effective  Organization charts  Shift organization  Unions affiliations  Customers  Suppliers  Procedures  Work instructions  Quality Manuals  FMEA/CCP  Control plans http://www.avient.com/company/sustainability/environmental/global-iso-certificate-library https://www.avient.com/company/policies-and-governance-0/code-conduct https://www.avient.com/company/sustainability/sustainability-report/people/human-rights https://www.avient.com/company/policies-and-governance-0/code-conduct https://www.avient.com/company/policies-and-governance-0/global-iso-certificate-library https://www.avient.com/resources/safety-data-sheets https://www.avient.com/resources/technical-data-sheets https://www.avient.com/company/sustainability/people/safety https://www.avient.com/company/sustainability/sustainability-report/planet/energy-ghg-emissions https://www.avient.com/investors/investor-news?

Le Comité de liquidation dispose, à cette fin, des pouvoirs les plus étendus conférés par les articles 2:87 et suivants du Code des sociétés et des associations, sans devoir recourir à l'autorisation de l'assemblée générale prévue par les articles 2:88 et 2:97, paragraphe 3, alinéa 2, du Code des sociétés et des associations. Chaque année, le Comité de Liquidation se conformera au prescrit de l'article 2:99 du Code des sociétés et des associations. Cet extrait est délivré avant enregistrement conformément à l'article 173, 1° bis du Code des Droits d'Enregistrement.

Validity may be confirmed by accessing the website (www.abs-qe.com) or scanning the code to the right with a smartphone. Validity may be confirmed by accessing the website (www.abs-qe.com) or scanning the code to the right with a smartphone. Validity may be confirmed by accessing the website (www.abs-qe.com) or scanning the code to the right with a smartphone.

As a member of the American Chemistry Council, we have adopted Responsible Care® Guiding Principles and Security Code of Management Practices to guide our efforts in continual security improvement. As a member of the American Chemistry Council, we have adopted Responsible Care® Guiding Principles and the Product Safety Code of Management Practices to guide our efforts in material sourcing, development and management of our product portfolio throughout the value chain and life cycle.

Validity may be confirmed by accessing the website (www.abs-qe.com) or scanning the code to the right with a smartphone. Validity may be confirmed by accessing the website (www.abs-qe.com) or scanning the code to the right with a smartphone. Validity may be confirmed by accessing the website (www.abs-qe.com) or scanning the code to the right with a smartphone.

Is het in overeenstemming met de Code en de waarden van Avient? Overtredingen van de code We nemen overtredingen van onze Code zeer ernstig. Deze Code werd ontwikkeld binnen het kader van de waarden van Avient.

Validity may be confirmed by accessing the website (www.abs-qe.com) or scanning the code to the right with a smartphone. Validity may be confirmed by accessing the website (www.abs-qe.com) or scanning the code to the right with a smartphone. Validity may be confirmed by accessing the website (www.abs-qe.com) or scanning the code to the right with a smartphone.