Patterson Chairman, President and Chief Executive Officer 2 HOME | TOC Our Vision and Strategy Vision At Avient, we create specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Insider Information and Trading At Avient, you may become aware of material information relating to Avient or any company with which we do business that has not been disclosed to the public. Avient associates hiring agents and consultants must perform due diligence to assure themselves and the Company that the agent or consultant is not giving or receiving bribes or kickbacks.

AVIENT DESIGN FRESH THINKING SMARTER DESIGNS ADVANCED MATERIALS OEMS TURN TO AVIENT DESIGN WHEN THEY ARE LAUNCHING A NEW PRODUCT, OR WHEN THEY WANT TO IMPROVE AN EXISTING PRODUCT. Avient Design We are INHERENT PROBLEM SOLVERS, experienced designers and engineers. HOW4D DESIGN PROCESS USE OUR 4D PROCESS TO ACCELERATE NEW PRODUCT DEVELOPMENT SPECIALTY PORTFOLIO We combine design services with Avient’s materials portfolio to bring an unbiased, expert point of view to your design1 Color & Additives Engineered Materials Composites Soft Touch Distribution Rely on our technical expertise to validate that designs are manufacturable and materials will perform as intended once formed MANUFACTURING4 FEA/Moldflow/Mechanical Simulation Design Optimization Design for Manufacturing Processing Expertise Supply Chain Development Visualize color, material and finish options using our exclusive tools and expertise3 COLOR, MATERIAL & FINISH (CMF) DESIGN Color & Effects Texture/Finish Application Development Material Specification 2 INDUSTRIAL DESIGN From ergonomics and concept sketches to 3D models and photo rendering, you can count on our world-class studio to help you innovate Ethnography Brand Language Development Ergonomics & Usability Concept Sketching 3D Modeling 3D Prototypes Photo Renderings WANT TO LEARN MORE?

Specialty running products manufacturer adapts shoes to the runner and the run Working together, teams from both companies created a customized TPE material that matched the performance of the Brooks TPE blend. The components and materials were carefully designed and engineered to work together properly and optimized for geometry, thickness, flexibility and performance.”

Avient Investor Relations Contact: Giuseppe (Joe) Di Salvo, Vice President, Treasurer and Investor Relations, Avient Corporation, +1 440-930-1921, giuseppe.disalvo@avient.com, or Media Contact: Kyle G. Rose, Vice President, Corporate Communications, Avient Corporation, +1 440-930-3162, kyle.rose@avient.com

Homepage // News Center // Avient to Present on Lightweighting Design Innovation and Sustainable Additive Solutions at the Plastics in Automotive Engineering Conference Avient Corporation will highlight Hydrocerol™ Chemical Foaming Agents, which can be used to reduce weight in automotive applications such as door panels, at the Plastics in Automotive Engineering (PIAE) Conference 2024 MANNHEIM, Germany – June 12, 2024 – Avient Corporation, a premier provider of specialized and sustainable materials solutions and services, will present its latest technologies and innovations for transportation, including two presentations, next week at the Plastics in Automotive Engineering (PIAE) Conference from June 19 to 20, 2024.

Sustainability at Avient Avient can and will do much more in sustainability, leveraging our expertise in materials science and passion for excellence. Khandpur - Chairman, President and Chief Executive Officer

Newlin Page 105 Old PolyOne Transformation 60% 80% 100% % o f O p e ra ti n g I n co m e * Mix Shift Highlights Specialty Transformation Ahead of Schedule 2015 Target *Operating Income excludes Corporate Charges ** Pro Forma for the acquisition of ColorMatrix and divestiture of SunBelt 2% 34% 42% 50% 65-75% 0% 20% 40% 2005 2008 2011 2011** 2015 % o f O p e ra ti n g I n co m e * JV's PP&S Distribution Specialty Specialty OI $5M $46M $89M $117M Target Page 106 Why Invest In PolyOne? Past performance demonstrates that our strategy and execution are working • Megatrends align with our strengths • Innovation and services provide differentiation • Innovation and services provide differentiation and competitive advantage • Strong and proven management team driving growth and performance The New PolyOne: A Specialty Growth Company 2015 Target: $2.50 Adjusted EPS Page 107 Thank You Questions & Answers Page 108

Vice President of Sustainability, Avient.  Investor Relations Contact: Giuseppe (Joe) Di Salvo, Vice President, Treasurer and Investor Relations, Avient Corporation, +1 440-930-1921, giuseppe.disalvo@avient.com; Media Contact: Kyle G. Rose, Vice President, Corporate Communications, Avient Corporation, +1 440-930-3162, kyle.rose@avient.com

Khandpur is President and Chief Executive Officer of Avient Corporation, a premier provider of specialized and sustainable material solutions and services. Khandpur joined Avient in December 2023. Khandpur holds a Bachelor’s of Technology degree in Chemical Engineering from the Indian Institute of Technology, Delhi and a Ph.D in Chemical Engineering from the University of Minnesota.

Khandpur is President and Chief Executive Officer of Avient Corporation, a premier provider of specialized and sustainable material solutions and services. Khandpur joined Avient in December 2023. Khandpur holds a Bachelor’s of Technology degree in Chemical Engineering from the Indian Institute of Technology, Delhi and a Ph.D in Chemical Engineering from the University of Minnesota.