CARIDIAN Blood bag 1 (Pricing only) Potential A8503-01 for NSF61 (Pricing) Services

GEON BOLD L5500 PACANE (PRICING) GEON BOLD L5000 LHB PACANE (PRICING) Services

R5165A YELLOW (PRICING) R5165A RED (PRICING) Services

GEON L7005 Tan (pricing only) GEON P503 WHITE 1654 (pricing only) Services

GEON HTX ULTRA LA426G Ivory 3759 (price) GEON E7456 WHITE (Pricing only) Services

15950-01 EXPE4792 Brown (pricing only) GEON HTX ULTRA LA426CD Brown (pricing) Services

SF#0059868 (PRICING) GEON M3700 DK GRY (Pricing) Services

These new materials and services focus on meeting specific customer needs while helping to advance a circular economy. Post-Consumer Recycled (PCR) Color Prediction Service is a digital service using sophisticated technology to help illustrate the color possibilities or limitations of certain types of PCR for customers, including polyolefins and polyethylene terephthalate (PET) resins. To access Avient’s news library online, please visit https://www.avient.com/news-events.

We define child labor as services by anyone under the age of 16 and, if local law is more restrictive than our policy, we will comply with the more restrictive local law. Our disclosures are located at: https://www.avient.com/company/policies-and-governance/ca-transparency-act-disclosure https://www.avient.com/company/policies-and-governance/europe-modern-slavery-and-human-trafficking- statement We reinforce Our Commitment to human rights, as set forth above, throughout our organization by incorporating and reflecting these principles in organizational policies, training programs, and our governance management framework. https://www.avient.com/company/policies-and-governance/ca-transparency-act-disclosure https://www.avient.com/company/policies-and-governance/europe-modern-slavery-and-human-trafficking-statement https://www.avient.com/company/policies-and-governance/europe-modern-slavery-and-human-trafficking-statement https://www.avient.com/sites/default/files/2020-10/supplier-code-of-conduct.pdf

Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: • Disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; • The effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; • Changes in laws and regulations regarding plastics in jurisdictions where we conduct business; • Fluctuations in raw material prices, quality and supply, and in energy prices and supply; • Production outages or material costs associated with scheduled or unscheduled maintenance programs; • Unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; • Our ability to achieve strategic objectives and successfully integrate acquisitions, including Avient Protective Materials (APM); • An inability to raise or sustain prices for products or services; • Our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; • Information systems failures and cyberattacks; • Amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; and • Other factors affecting our business beyond our control, including without limitation, changes in the general economy, changes in interest rates, changes in the rate of inflation and any recessionary conditions Use of Non-GAAP Measures This presentation includes the use of both GAAP (generally accepted accounting principles) and non-GAAP financial measures. GUIDANCE 11 14.8% 15.8% Adjusted EBITDA Margin % Better-than-expected margins driven by: • Resilient demand for composites and sustainable solutions which improved mix of higher margin applications • Deceleration of raw material inflation • Cost reduction activities Q1 EBITDA BRIDGE 12 $ millions CAI: Price / Mix 19) Inflation (4) SEM: Price / Mix 6) Inflation (4) Net Price Benefit 17) Wage and Energy Inflation (13) Cost Reductions 8) FX (6) Q1 2023 Actual $134) Adjusted EBITDA Q1 2022 Pro Forma $ 176) Demand (48) • Weak demand conditions in-line with previous expectations • Pricing continues to cover inflation of raw materials, wages and energy U.S. & Canada 40% 38% 17% Q1 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS 18% 23% Building and 6%Telecommunications END MARKET REVENUE (1) Total company sales and adjusted EBITDA of $846M and $134M, respectively, include intercompany sales eliminations and corporate costs $537M $91M $310M $64M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $134M$846M (1) 13 Q1 2023 SALES BY REGION Yo Y C H A N G E ( E X C L . Avient Specialty Other Specialty / 2023E(%) 36 79 87 83 81 76 73 90 79 77 76 73 69 60 22 MULTIPLE EXPANSION Avient Specialty Other Specialty / Note: Avient reflects 2023 adjusted EBITDA guidance of $530M and closing share price of $38.51.