Avient Design for Circularity This is where Avient’s sustainable material science solutions come into the picture. Sources: 1)    https://verpackungsgesetz-info.de/wp-content/uploads/2021/06/twopager-packaging-amendment-1.pdf 2)    https://ec.europa.eu/commission/presscorner/detail/en/IP_18_3846 3)    https://verpackungsgesetz-info.de/en/#verpackungsgesetz

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Pro Forma Financial Information The Company acquired Avient Protective Materials (“Dyneema”) on September 1, 2022 (the “Acquisition Date”) and sold the Distribution segment on November 1, 2022. Avient reflects 2023 adjusted EBITDA guidance of $500M and estimated run-rate CAPEX of $110M. 2023E (%) 27 78 89 83 80 78 74 86 79 76 67 66 55 50 (39) Av ie nt AV PM FM C C Avient Specialty Other Specialty / MULTIPLE EXPANSION Note: Avient reflects 2023 adjusted EBITDA guidance of $500M and closing share price of $41.57. Avient 2011, 2018 and 2021 multiples reflect trailing 12 months EBITDA at December 31. 28 EV / 2023E EBITDA 6.5 8.5 11.0 10.8 16.1 15.5 14.1 14.0 10.3 21.0 19.0 14.3 12.1 11.8 11.7 11.5 9.7 11 21 23 PM AV FM Avient Historic Multiple Avient Specialty Other Specialty / AP P E N DI X 30 Performance Additives 16% Pigments 12% TiO2 Dyestuffs 2% Polyethylene Nylon Polypropylene Styrenic Block Copolymer Other Raw Materials 33% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials 2022 pro forma results for the acquisition of Avient Protective Materials RAW MATERIAL BASKET SEGMENT DATA U.S. & Canada 40% 37% 18% 2022 PRO FORMA SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS Building and END MARKET REVENUE $2,355M $402M $1,300M $272M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $592M$3,653M (1) 9% 32 (1) Total company sales and adjusted EBITDA of $3,653M and $592M, respectively, include intercompany sales eliminations and corporate costs 2022 REVENUE | $2 .4 BILLION US & Canada 34% 38% END MARKET REGION 33 34% 21% Building & 1% Energy 2% COLOR, ADDITIVES & INKS 2022 PRO FORMA REVENUE | $1 .3 BILLION US & Canada 52% 35% 34 19% 8%Industrial 16% 9% Defense Building & END MARKET REGION SPECIALTY ENGINEERED MATERIALS 32% 27% 14% Building & 3% 1% Defense 1% (18% of sales) 9% 2022 PROFORMA AVIENT REGIONAL SALES 27% 14% 17% Building & (37% of sales)Transportation 12% Building & US & Canada (40% of sales) 7% 56% 23% 7% Building & 1% LATAM (5% of sales) 3% 35 BY END MARKET Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) Senior management uses comparisons of adjusted net income from continuing operations attributable to Avient shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to Avient shareholders, excluding special items, to assess performance and facilitate comparability of results.

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Share gains and geographic penetration all Avient Amplify innovation Copyright © . 2025 8 Build new platforms of scale GROW BUSINESS AT 10% PLUS CAGR 1. Moving up the value chain, and expanding addressable market size by providing materials solutions in select and prioritized areas Copyright © . 2025 9 GROWING AT GROWING AT 1 Core grows above macro driven by share wins and faster business development in prioritized portfolios (growth vectors) CATALYZE THE CORE 2 Portfolios in high growth markets grow faster than core – building sizeable businesses of scale rapidly BUILD NEW PLATFORMS OF SCALE ► Prioritizing ► differently ► Creating “space” ► focused front-end and back-end structures Copyright © . 2025 10 Organic revenue growth with margin expansion LONG TERM FINANCIAL TARGETS +100 to +200bps above GDP Organic revenue growth Copyright © . 2025 11 Pathway to 20%+ adjusted EBITDA margins Operating leverage • Organic volume growth and SG&A efficiencies from prioritizing resources across the company 2 Mix improvement • Increased sales in higher margin growth platforms 3 Productivity • Manufacturing & sourcing efficiencies • Footprint optimization • Digital technologies Avient margin expansion Schematic illustration only Productivity +400bps margin expansion 20%+ Strategic objective 16.2% 2024 adjusted +2% +1% Operating leverage +1% Mix improvement Copyright © . 2025 12 Disciplined capital allocation PRIORITIZATION AND PHILOSHOPY Capex Expected annual spend between 3-5% of revenue to support investment in organic growth M&A De-emphasized in near term; complement organic growth strategy with M&A over time, as needed 2 Dividends Increasing each year with underlying earnings growth 3 Debt pay down Target net debt to adjusted EBITDA less than 2.5x 4 Share repurchases Opportunistic buy backs 5 Copyright © . 2025 13 Avient is a compelling investment thesis 2024 Results 15Copyright © . Color, Additives & Inks END MARKETS REGIONS 34% 21% 11% Packaging Telecom 1%Energy 1% 34% US & Canada Latin America Europe, Middle East Construction 25Copyright © .

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Avient can help. Collaborate with Avient and see what a positive difference the right polymer supplier can make. Office Supplies

Avient developed new recycled-content materials to enable its customers to achieve their goals and add options for the circular economy. FDA); oil; or polyvinyl butyral (PVB) from windshields and laminated building glass supplied by Shark Solutions. Additionally, for every one ton of plastic recycled, the customer saves planet Earth the equivalent of 1,000–2,000 gallons of gasoline.*

Avient developed new recycled-content materials to enable its customers to achieve their goals and add options for the circular economy. FDA); oil; or polyvinyl butyral (PVB) from windshields and laminated building glass supplied by Shark Solutions. Additionally, for every one ton of plastic recycled, the customer saves planet Earth the equivalent of 1,000–2,000 gallons of gasoline.*

Further, automotive OEMs, designers and Tier suppliers can work with InVisiO services throughout the design and development process to bring their vision to life.” Avient Announces Quarterly Dividend... Avient Board of Directors Appoints Ashish K.