Francisco Nakasato, 1700 13295-000 Itupeva San Pablo, Brasil Teléfono: +55 11 4593 9200 Europa Sede central regional de Pommerloch, Luxemburgo 19 Route de Bastogne Pommerloch, Luxemburgo, L-9638 Teléfono: +352 269 050 35 Fax: +352 269 050 45 www.avient.com https://www.avient.com

Francisco Nakasato, 1700 13295-000 Itupeva Sao Paulo, Brésil Téléphone : +55 11 4593 9200 Europe Siège régional Pommerloch, Luxembourg 19 Route de Bastogne Pommerloch, Luxembourg, L-9638 Téléphone : +352 269 050 35 Télécopie : +352 269 050 45 www.avient.com https://www.avient.com

$86 $123 $0.53 $0.89 Q1 2021 – ORGANIC PERFORMANCE 3 Sales Adjusted Operating Income $991 $1,162 + 17% + 43% + 68% (1) (1) (1) Q1 2021 SEGMENT PERFORMANCE 4 CAI $536 $609 ($ in millions) SEM Distribution $64 $89 +14% +39% $290 $363 $19 $24 +25% +26% $185 $217 $22 $34 +17% +55% SPECIALTY EBITDA MARGIN EXPANSION 5 CAI (1) 2018-2020 financial information is pro forma to include a full year of Clariant Masterbatch business acquisition 15.3% 15.2% 16.2% 19.1% 2018 2019 2020 Q1 2021 14.8% 15.2% 17.6% 19.4% 2018 2019 2020 Q1 2021 SEM • Continued portfolio transformation to high-growth end markets and sustainable solutions • Clariant Masterbatch synergy realization • Investments in composites and outdoor high performance applications drive growth and mix improvements CAI EBITDA MARGIN EXPANSION 6 Legacy CAI 18.9% 18.9% 21.0% 2019 2020 Q1 2021 Legacy 11.9% 13.8% 17.4% 2019 2020 Q1 2021 • Early synergy capture translating to the bottom line • Positive mix with growth in healthcare, consumer and packaging end-markets • World-class vitality index of 36% represents sales from products introduced in the last five years.

& Canada 50% Latin America 9% 2021 SEGMENT, END MARKET AND GEOGRAPHY 33 GEOGRAPHY REVENUESEGMENT FINANCIALS 23% 19% Building and END MARKET REVENUE (1) Total company sales and adjusted EBITDA of $4,819M and $581M, respectively, include intercompany sales eliminations and corporate costs $2,402M $409M $919M $164M $1,631M $94M Sales EBITDA Distribution Specialty Engineered Materials Color Additives and Inks $581M$4,819M 15% 34% 21% Building & 9% 1% Telecommunications C O L O R , A D D I T I V E S & I N K S 2021 REVENUE | $2 .4 BILL ION 32% 40% 21% Latin America END MARKET REGION 34 S P E C I A LT Y E N G I N E E R E D M AT E R I A L S 27% Building & 2021 REVENUE | $919 MILLION END MARKET 55% 20% REGION 35 DI S TR IBU T I ON 26% 23% 20% Building and 80% 3% Latin America END MARKET REGION K E Y S U P P L I ER S 2021 REVENUE | $1 .6 B ILL ION 36 TOTA L C O M PA N Y R E G I O N A L S A L E S BY END MARKET 30% 26%Healthcare 14% Building & 2% Energy (16% of sales) 32% Building & (25% of sales) 37 19% Building & US & Canada (50% of sales) 38% 33% Building & LATAM (9% of sales) 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.

Francisco Nakasato, 1700 13295-000 Itupeva Sao Paulo, Brazil Telephone: +55 11 4593 9200 Europe Pommerloch, Luxembourg 19 Route de Bastogne Pommerloch, Luxembourg, L-9638 Telephone: +352 269 050 35 Fax: +352 269 050 45 www.avient.com https://www.avient.com Quick Reference: Antitrust DO’s and DON’Ts Antitrust Checklist Protection from Retaliation Avient Ethics Hotline Conclusion Antitrust Potential Areas of Concern Antitrust Law Violations An Overview of U.S.

Francisco Nakasato, 1700 13295-000 Itupeva Sao Paulo, Brazil ‎+55 11 4593 9200:ٹیلیفون یورپ Europe Pommerloch, Luxembourg 19 Route de Bastogne Pommerloch, Luxembourg, L-9638 ‎+352 269 050 35:ٹیلیفون ‎+352 269 050 45:فیکس www.avient.com https://www.avient.com

Francisco Nakasato, 1700 13295-000 Itupeva Sao Paulo, Brasilien Telefon: +55 11 4593 9200 Europa Regionalt huvudkontor Pommerloch, Luxemburg 19 Route de Bastogne Pommerloch, Luxemburg, L-9638 Telefon: +352 269 050 35 Fax: +352 269 050 45 www.avient.com https://www.avient.com

Francisco Nakasato, 1700 13295-000 Itupeva São Paulo, Brasil Telefone: +55 (11) 4593 9200 Europa Sede regional Pommerloch, Luxemburgo 19 Route de Bastogne Pommerloch, Luxemburgo, L-9638 Telefone: +352 269 050 35 Fax: +352 269 050 45   www.avient.com https://www.avient.com

In closing, I would like to thank our exceptional and diverse Board of Directors for their continued governance and valued insights, as well as our global associates and customers for their collaboration and dedication. We depreciate certain assets associated with closing manufacturing locations over a shortened life (through the cease-use date). All U.S. qualified defined benefit pension plans are frozen, no longer accrue benefits and are closed to new participants.

Execution of this strategy is achieved by our business segments working closely with our individual facilities, the EH&S team, and the Planet Sub-Committee. The analysis using this scenario was mainly quantitative in nature covering 55 direct manufacturing operations with the highest insured value The analysis using this scenario was mainly quantitative in nature covering 55 direct manufacturing operations with the highest insured value