MIC GATORADE ORANGE PE STAN-TONE HCC-34371 ORANGE EDDY HANDLE 1655 ORANGE

PU MOCK ORANGE 15-1245 TCX PC MOCK ORANGE 15-1245 TCX 050OR2070 ORANGE XLPE

WOWX-301 FLUO ORANGE P918 MAGNAPRINT ECO ORANGE HO HT ORANGE

ORANGE PP 2 PVC SAFETY ORANGE ORANGE F68B1F

ORANGE 7416C ORANGE LEVER 030OR2050 ORANGE

AVIENT CORPORATION S E C O N D Q U A R T E R 2 0 2 3 R E S U L T S (NYSE: AVNT) J U LY 2 7 , 2 0 2 3 DISCLAIMER Forward-Looking Statements Certain statements contained in or incorporated by reference into this presentation constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Additionally, Adjusted EPS excludes the impact of special items and amortization expense associated with intangible assets. 2 COMPOSITES PORTFOLIO D Y N E E M A ® E X P A N D S O U R E N G I N E E R E D F I B E R S A N D P A N E L S T E C H N O L O G Y LFT Tapes Laminates/Panels Shapes Pultrusion Engineered Fibers 4 DEFENSE TELECOMMUNICATIONS ENERGY TRANSPORTATION Military • Law Enforcement First Responders Body Armor • Helmets Vehicle Protection Sustainable Infrastructure Offshore Wind Electrical Grid Protection EV Battery Components Commercial Laminates Body & Trim • Air Cargo and Railroad Car Panels 5G Applications Fiber Optic Cables Satellite Communications Connectors and Components 5 COMPOSITES SERVE DIVERSIFIED END MARKETS INDUSTRIAL Lifting Slings • Aquaculture High Pressure Pipe Conveyer Springs Q 2 P ER FO RM A N CE Q2 2023 PERFORMANCE VS. GUIDANCE 8 15.4% 15.9% Adjusted EBITDA Margin % Better-than-expected margins driven by: • Favorable mix - strong demand for composite applications • Raw material deflation Q2 EBITDA BRIDGE 9 ($ millions) CAI: Price / Mix 7) Deflation 11) SEM: Price / Mix 2) Deflation 6) Net Price Benefit 26) Wage and Energy Inflation (10) Cost Reductions 13) FX (2) Q2 2023 Actual $131) Adjusted EBITDA Q2 2022 Pro Forma $ 172) Demand (68) • Demand conditions vs. expectations: LATAM • Net price benefit remains greater than wage and energy inflation • Clariant synergies and reduced administrative costs Q2 2023 SEQUENTIAL SALES BY REGION Q 2 2 0 2 3 v s .

Companies acquired by Avient go through a rigorous EH&S integration process. R&D Spend U .S . Avient’s Vice President of EH&S and SVP of Global Operations and Process Improvement are responsible for reporting to the EH&S Committee of the Board of Directors.

Companies acquired by Avient go through a rigorous EH&S integration process. R&D Spend U .S . Avient’s Vice President of EH&S and SVP of Global Operations and Process Improvement are responsible for reporting to the EH&S Committee of the Board of Directors.

For the year, our stock price increased 32%, outpacing the S&P 500 and S&P Mid Cap Index. PolyOne Stock Performance The following is a graph that compares the cumulative total shareholder returns for PolyOne’s common shares, the S&P 500 index and the S&P Mid Cap Chemicals index, with dividends assumed to be reinvested when received. The S&P Mid Cap Chemicals index includes a broad range of chemical manufacturers.

Industrial Valle del Cinca S/N Apartado, 18