ASIA/PACIFIC: SDS for the Asia Pacific region can be obtained by contacting the appropriate regional office. UV BLUE GN 300C STAN-TONE DB-15597 HI LITE BLUE

ASIA/PACIFIC: SDS for the Asia Pacific region can be obtained by contacting the appropriate regional office. STAN-TONE HCC-108758 BLUE 4000 STAN-TONE DB-15597 HI LITE BLUE

ASIA/PACIFIC: SDS for the Asia Pacific region can be obtained by contacting the appropriate regional office. DB4441C BLUE ALLOY STAN-TONE DB-15597 HI LITE BLUE

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 IT and Cybersecurity Experience and understanding of information security, data privacy and cybersecurity l l l l Experience in environmental matters, community affairs, and/or corporate responsibility initiatives including sustainability Other Public Company Boards 1 3 1 — — 1 2 2 — 1 2 1 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. Nicolas’ experience in managing manufacturing in the Asia Pacific region can assist Avient with our manufacturing plans in that region. His background in managing operations in Europe and Asia/Pacific provides him with international expertise that is of value to Avient.

XRU-2594 FEP NP-3180 CC HIGH BLUE GLS 345-085 BLUE GREEN METALLIC STAN-TONE DB-15597 HI LITE BLUE

X HC 188477#SR-13675 Blue DB5216 Channel Lock Blue NP STAN-TONE DB-15597 HI LITE BLUE

100.56 FEP100 CC STD MCSL BLUE 103.56 FEP100 CC HIGH MCSL BLUE STAN-TONE DB-15597 HI LITE BLUE

Geon(TM) MB2864 Blue Dog Toy Non-Phth Geon(TM) DM758G KOBALT BLUE MATTE 65A STAN-TONE DB-15597 HI LITE BLUE

Geon(TM) V1285-41 Royal Blue Scrim Coat Pla BLUE 2 STAN-TONE DB-15597 HI LITE BLUE

Geon(TM) DB4961 BLUE PMS 286 Geon(TM) Sensation DB4961 BLUE PMS 286 STAN-TONE DB-15597 HI LITE BLUE