Avient IR Presentation -- Goldman Sachs and Morgan Stanley Investor Meetings -- 2/17/2021 to 2/18/2021 PolyOne IR Presentation - Goldman Sachs Basic Materials Conference - 5/17/2016 PolyOne IR Presentation - Credit Suisse - 9/17/2013 - w Non GAAP

Avient IR Presentation -- Goldman Sachs and Morgan Stanley Investor Meetings -- 2/17/2021 to 2/18/2021 PolyOne IR Presentation - Goldman Sachs Basic Materials Conference - 5/17/2016 PolyOne IR Presentation - Credit Suisse - 9/17/2013 - w Non GAAP

Avient IR Presentation -- Goldman Sachs and Morgan Stanley Investor Meetings -- 2/17/2021 to 2/18/2021 PolyOne IR Presentation - Goldman Sachs Basic Materials Conference - 5/17/2016 PolyOne IR Presentation - Credit Suisse - 9/17/2013 - w Non GAAP

Industrial Valle del Cinca S/N Apartado E-22300 Barbastro Spain Avient Corporation - Berea, OH Liquid Colorants and Additives for Plastics , 680 N. Page 2 of 4 https://abs.ez2xs.com https://abs.ez2xs.com A B S Q u al it y E va lu at io n s C er ti fic at io n E Avient Corporation - Cergy, France Design and Manufacture of Color and Additive Concentrates and Specialty Compounds , 14 Avenue de l'Eguillette Saint Ouen l'Aumône - 95310 France Avient Corporation - Esenyurt, Turkey Design and Manufacture of Specialty Engineered Thermoplastics Orhangazi Mah. 1683 Sok. Page 3 of 4 https://abs.ez2xs.com https://abs.ez2xs.com A B S Q u al it y E va lu at io n s C er ti fic at io n E Avient Corporation - Mountain Top, PA Manufacturing, Shipping and Receiving , 855 Oak Hill Road Mountain Top - PA 18707 United States Avient Corporation - Oricain (Pamplona), Spain Design and Manufacture of Color and Additive Concentrates and Specialty Compounds Pol.

Le pigment noir de carbone, très utilisé aujourd’hui pour les emballages de couleurs sombres, absorbe la lumière infrarouge envoyée par l’équipement de tri optique et ne renvoie pas de signal. De ce fait, l’emballage n’est pas détecté et ne pourra pas être trié, ni recyclé. À Paris, le 17 juillet 2020 1 Disponible sur le site du COTREP : https://www.cotrep.fr/content/uploads/sites/3/2019/02/tri-p1-emballages-sombres-v01-2019.pdf https://www.cotrep.fr/content/uploads/sites/3/2019/02/tri-p1-emballages-sombres-v01-2019.pdf

Le pigment noir de carbone, très utilisé aujourd’hui pour les emballages de couleurs sombres, absorbe la lumière infrarouge envoyée par l’équipement de tri optique et ne renvoie pas de signal. De ce fait, l’emballage n’est pas détecté et ne pourra pas être trié, ni recyclé. À Paris, le 17 juillet 2020 1 Disponible sur le site du COTREP : https://www.cotrep.fr/content/uploads/sites/3/2019/02/tri-p1-emballages-sombres-v01-2019.pdf https://www.cotrep.fr/content/uploads/sites/3/2019/02/tri-p1-emballages-sombres-v01-2019.pdf

Microsoft PowerPoint - AVNT June IR Conferences_6.1.2023 1130AM AVIENT CORPORATION I N V E S T O R P R E S E N T A T I O N (NYSE: AVNT) J U N E 2 0 2 3 D I S C L A I M E R 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. GUIDANCE ( T O TA L C O M PA N Y ) 11 $845 $846 Guidance Actual $125 $134 Guidance Actual Sales Adjusted EBITDA (in millions) $0.55 $0.63 Guidance Actual Adjusted EPS (in millions) Q1 2023 PERFORMANCE VS. Avient Specialty Formulators Other Specialty / Chemical Companies 2023E(%) 37 79 89 83 81 76 73 90 82 77 76 74 70 58 22 A vi e n t K W R P P G F U L A V Y R P M F M C C E H X L A S H E C L H U N E M N S C L M U LT I P L E E X PA N S I O N Avient Specialty Formulators Other Specialty / Chemical Companies Source: Peer data per Bloomberg as of May 31, 2023 Note: Avient reflects 2023 adjusted EBITDA guidance of $530M and closing share price of $36.50.

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 L Y 2 7 , 2 0 2 3 D I S C L A I M E R 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. GUIDANCE ( T O TA L C O M PA N Y ) 7 $845 $824 Guidance Actual $130 $131 Guidance Actual Sales Adjusted EBITDA (in millions) $0.60 $0.63 Guidance Actual Adjusted EPS (in millions) Q2 2023 PERFORMANCE VS. GUIDANCE ( T O TA L C O M PA N Y ) 8 15.4% 15.9% Guidance Actual Adjusted EBITDA Margin % Better-than-expected margins driven by: • Favorable mix - strong demand for composite applications • Raw material deflation Q2 EBITDA BRIDGE ( T O TA L C O M PA N Y ) 9 ($ 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.

ÍNDICE DE EPÍGRAFES SOLICITADOS: Datos Generales Situaciones Especiales DATOS GENERALES Indice AVIENT ESPAÑA SOCIEDAD LIMITADA 07/11/1983 Poligono Industrial, s/nºBARBASTRO22300-HUESCA Indefinida B22019723 EUID: ES22010.000000526 Hoja HU-2192 Tomo 494 Folio 6 La fabricacion y comercializacion de productos quimicos y auxiliares, tanto naturales como sinteticos, en relacion con las industrias del caucho, de resinas, de plasticos y de pinturas, y todas aquellas operaciones mercantiles que se relacionen con dicho objeto. En caso de discordancia prevalece el contenido de asientos registrales sobre el índice llevado por procedimientos informáticos.La Certificación expedida por el Registrador Mercantil será el único medio para acreditar fehacientemente el contenido de los asientos y demás documentos archivados o depositados en el Registro (Artículo 77 del Reglamento del Registro Mercantil).Queda totalmente prohibida la incorporación de los datos que se contienen en este documento a bases o ficheros informatizados que puedan ser susceptibles de consulta individualizada por personas físicas o jurídicas, y ello aunque se exprese la procedencia de la información (Instrucción DGRN de 17 de febrero de 1998).

Microsoft PowerPoint - AVNT Q3 2022 Earnings Presentation AVIENT CORPORATION T H I R D Q U A R T E R 2 0 2 2 R E S U L T S (NYSE: AVNT) N O V E M B E R 2 , 2 0 2 2 D I S C L A I M E R 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. EBITDA Margins (1) • Focus on organic growth combined with transformative and bolt-on acquisitions • Divested commodity businesses tied to more cyclical end markets • Expanded presence in high growth areas of sustainable solutions, specialty healthcare applications, composites and more resilient end markets 5.4% 11.5% 16.1% 2006 2018 2022PF $142 $408 $585 2006 2018 2022PF 2006 figures exclude joint venture results 14 RETURNING CASH TO SHAREHOLDERS Growing Dividend 0.1 0.1 0.2 0.5 0.6 0.7 0.8 0.9 0.9 1.0 1.0 1.0 11 12 13 14 15 16 17 18 19 20 21 22 0.16 0.20 0.26 0.34 0.42 0.50 0.58 0.72 0.79 0.81 0.85 0.95 0.99 11 12 13 14 15 16 17 18 19 20 21 22 23 ~$1Bn REPURCHASED OVER LAST 11 YEARS ~$550MM PAID OVER LAST 11 YEARS Dividends Share Repurchases Cumulative Buybacks $ B n $ p e r sh a re $2.95 2022 PRO FORMA ADJUSTED EPS Earnings Growth Expanding Profitability $0.15 $1.09 $2.08 $2.67 $2.95 2009 2012 2015 2018 2022PF T H I R D Q U A R T E R 2 0 2 2 R E S U L T S $110 $119 2021 2022 $0.61 $0.59 2021 2022 Q3 2022 PERFORMANCE ( T O TA L C O M PA N Y C O N T. O P S ) 16 Sales Adjusted EBITDA $818 $823 2021 2022 + 1% Adjusted EPS + 8% - 3% (in millions) (in millions) (+ 9% excluding FX) (+ 18% excluding FX) (+ 5% excluding FX) Q3 EBITDA BRIDGE ( P R O F O R M A T O TA L C O M PA N Y ) 17 Price increases more than offset raw material and supply chain impacts $ millions CAI: Price / Mix 68 Inflation (44) SEM: Price / Mix 41 Inflation (26) Net Price Benefit 39 Wage and Energy Inflation (14) Clariant Color Integration Synergies 6 Incentives, Other Employee Costs 14 FX (11) Q3 2022 $137   Adjusted EBITDA Q3 2021 $ 142 Demand (39) Q3 2022 SEGMENT PERFORMANCE 18 CAI $587 $566 Sales ($ in millions) $93 $93 EBITDA SEM Pro Forma $326 $319 Sales $70 $62 EBITDA (+ 4% excluding FX) - 4% - 2% (+ 5% excluding FX) Flat (+ 7% excluding FX) - 11% (- 7% excluding FX) $500 $585 Cont.