Remafin™ EP White Colorants Colorant Chromatics™ PES/PSU/PPSU Colorants Remafin™ EP White Colorants

Remafin™ EP White Colorants Colorant Chromatics™ PES/PSU/PPSU Colorants Remafin™ EP White Colorants

Remafin™ EP White Colorants Colorant Chromatics™ PES/PSU/PPSU Colorants Remafin™ EP White Colorants

Remafin™ EP White Colorants Colorant Chromatics™ PES/PSU/PPSU Colorants Remafin™ EP White Colorants

Remafin™ EP White Colorants Colorant Chromatics™ PES/PSU/PPSU Colorants Remafin™ EP White Colorants

Our Board maintains Audit ("AC"), Compensation ("CC"), Governance and Corporate Responsibility ("G&CRC"), and Environmental, Health and Safety ("EH&SC") committees. PROXY SUMMARY 10 PROXY STATEMENT 2024 | Annual Meeting of Shareholders Name Age Director Since Independent Committee Membership (M=Member, C=Chair) AC CC G&CRC EH&SC Robert E. Skills/Experience Ab er na th y Fe ar on Go ff Gr ee n Je lli so n Kh an dp ur Li n M in k Ni co la s Pr ee te Ve rd ui n W ul fs oh n Financial Knowledge of finance or financial reporting; experience with debt/capital market transactions and/or mergers and acquisitions l l l l l l l l International Experience doing business internationally or focused on international issues and operations and exposure to markets, economies, and cultures outside the U.S. l l l l l l l l l l l l Industry Expertise Significant experience in the Company’s businesses and industries l l l l l l l l l Regulatory Experience in government and regulatory affairs, and regulated industries, including as part of a business and/or through positions with government organizations and regulatory bodies l l l l l l l l Technology Technical or scientific knowledge and experience implementing technology strategies l l l l l Human Capital Experience in management of labor relations, in human resources, and talent management l l l l l l l l l l Operations Experience overseeing complex operations and developing and implementing operational plans and business operations strategy l l l l l l l l l l l Corporate Governance Experience and understanding of governance matters and principles, including management accountability, transparency and protection of shareholder interests l l l l l l l l l l l l IT and Cybersecurity Experience and understanding of information security, data privacy and cybersecurity l l l l Sustainability Experience in environmental matters, community affairs, and/or corporate responsibility initiatives including sustainability l l l l l l l l l l l l Other Public Company Boards 1 3 1 — — 1 2 2 — 1 2 1 PROXY SUMMARY 12 PROXY STATEMENT 2024 | Annual Meeting of Shareholders Board Diversity Matrix (as of March 19, 2024) Total Number of Directors 12 Female Male Gender Identity Directors 3 9 Demographic Background African American or Black — 2 Alaskan Native or Native American — — Asian — 1 Hispanic or Latinx — — Native Hawaiian or Pacific Islander — — White 3 6 Two or More Races or Ethnicities — — Supplemental Characteristics Person with Disability/Disabilities 1 — Military Veteran — — Person of International / Non-U.S.

Cesa™ Non-PFAS Process Aid for Extrusion: for use in polyethylene (PE) and polypropylene (PP) applications, it reduces friction between the polymer and the metal during extrusion comparable to a traditional processing aid but is formulated without fluoropolymers which may be classifiable as per- and polyfluorinated substances (PFAS) and will be presented during Avient’s technical seminar at NPE, “PFAS Alternatives: 2024 and Beyond,” by Sean Bernhardt, Senior Research and Development Manager, Color, Additives, & Inks, Americas at Avient, on May 7 at 3 p.m. and May 8 at 1 p.m.

For many GLS overmolding grades, the use of a polyethylene (PE) carrier may adversely affect adhesion.

Name Age Director Since Principal Position Notable Skills and Experiences Inde- pendent Committee Membership* AC CC N&GC EH&SC Robert E. Financial, International, Industry Experience, Regulatory, Technology, HR, Operations, Environmental, Corporate Governance Yes M PROXY SUMMARY Name Age Director Since Principal Position Notable Skills and Experiences Inde- pendent Committee Membership* AC CC N&GC EH&SC Richard H.

Our Board maintains Audit ("AC"), Compensation ("CC"), Governance and Corporate Responsibility ("G&CRC"), and Environmental, Health and Safety ("EH&SC") committees. Name Age Director Since Independent Committee Membership (M=Member, C=Chair) AC CC G&CRC EH&SC Robert E.