The following table identifies the principal facilities of our segments: Performance Products and Solutions Global Specialty Engineered Materials Global Color, Additives and Inks PolyOne Distribution Designed Structures and 1.Long Beach, 1.McHenry, Illinois 1.Glendale, Arizona 1.Rancho Cucamonga, 1.Arlington, Texas (4) California 2.Avon Lake, Ohio 2.Kennesaw, Georgia California 2.Evanston, Illinois (4) 2.Terre Haute, Indiana Dyersburg, Suwanee, 2.Chicago, Illinois 3.Cape Girardeau, 3.Louisville, Kentucky Tennessee (1) Georgia (3) 3.Eagan, Minnesota Missouri (4) 4.Avon Lake, Ohio 3.North Haven, 3.Elk Grove Village, 4.Edison, New Jersey 4.Goodyear, Arizona (4) 5.Clinton, Tennessee Connecticut Illinois 5.Statesville, North 5.Greenville, Ohio (4) 6.Dyersburg, Seabrook, Texas (1) 4.St. Portage, 14.Donora, Plants) 18.Pune, India Wisconsin (4) (6) Pennsylvania (4) 19.Pamplona, Spain 16.Ripon, Wisconsin (4) Cape Girardeau, 20.Bangkok, Thailand 17.Salisbury, Missouri (1) (4) 21.Pudong (Shanghai), Maryland (4) 15.Ramos Arizpe, China 18.Sheboygan Falls, Mexico (4) 22.Jeddah, Wisconsin (4) (15 Manufacturing Saudi Arabia (5) 19.Stamford, Plants) Shenzhen, China (1) Connecticut (4) 23.Tianjin, China 20.Warsaw, Indiana (4) 24.Novo Hamburgo, 21.Wichita, Kansas (4) Brazil 22.Grandby, Canada (4) 25.Berea, Ohio Ramos Arizpe, 26.Richland Hills, Texas Mexico (4) 27.Bethel, Connecticut (22 Manufacturing 28.Barberton, Ohio Plants) 29.Knowsley, United Kingdom 30.Eindhoven, Netherlands 31.Suzhou, China 32.Shanghai, China 33.Itupeva, Brazil 34.Odkarby, Finland Manitowoc, Wisconsin (1) (4) (34 Manufacturing Plants) (1) Facility is not included in manufacturing plants total as it is also included as part of another segment. (2) There are two manufacturing plants located at Suzhou, China. (3) Facility is not included in manufacturing plants total as it is a design center/lab. (4) Facility added in connection with the acquisition of Spartech on March 13, 2013. (5) Facility added in connection with the JE.A. Committees: 1, 4 Retired Senior Vice President and Chief Financial Officer, Eastman Chemical Company Committees: 1, 4 Retired Chairman and Chief Executive Officer, National Starch and Chemical Company Committees: 2, 3* Executive Vice President, Global Strategy, Monsanto Company Committees: 2, 3 President and Chief Executive Officer, QualHealth, LLC Committees: 2, 4 President and Chief Executive Officer, Carpenter Technology Corporation Committee: 2 COMMITTEES 1.

Microsoft PowerPoint - AVNT M11 Investor Presentation AVIENT CORPORATION I N V E S T O R P R E S E N T A T I O N (NYSE: AVNT) N OV E M B E R 2 0 2 4 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. For the same reasons, Avient is unable to address the probable significance of the unavailable information. 3 AVIENT OVERVIEW 2023 Financial ResultsCompany Overview Revenue By: 9,300 Employees 102 Manufacturing Sites 20,000+ Customers  Innovating materials and processing solutions to solve our customers’ challenges while enabling a sustainable world  Broad portfolio of technologies with market leading positions and flexibility to anticipate and meet customer needs  Focus is on organic revenue growth and margin expansion, following our successful portfolio transformation $3.14B Revenue $2.36 Adjusted EPS $502M Adjusted EBITDA 16.0% Adjusted EBITDA Margins $186M Adjusted Free Cash Flow U.S. & Canada 64% Specialty Engineered Materials Color Additives and Inks 41% 23% 19% 10% 5% 4% Building & Energy Telecom Geography Segment Industry 2024 Financial Guidance $525 to $530 million Adjusted EBITDA $2.63 to $2.67 Adjusted EPS 4 Industry Sustainability Standards ESG Ratings Performance 1 4 87th 94th percentile Avient CDP Score: A- SUSTAINABILITY PERFORMANCE AND RECOGNITION O CTO BE R 3 1 , 2024 W EB CAS T P RE SE N TATI O N 6 Q3 2024 HIGHLIGHTS • 8.5% organic sales growth driven by broad-based growth across all regions and most end markets in both CAI and SEM segments • Growth stemmed from gaining share, winning new product specifications and restocking in certain end markets • Both segments expanded YoY EBITDA margins by 40 bps each • Adjusted EPS of $0.65, an increase of 14% vs the prior year • Successfully refinanced $650M outstanding senior notes due 2025; extending maturity to 2031 • Increased dividend 5% to $1.08 on an annualized basis; 14th consecutive increase Adj. EBITDA $130 million +6% (+7% ex FX)Net Sales $815 million +8% (+8.5% ex FX) Net Sales $815 million +8% (+8.5% ex FX) Q 3 2024 R ES U LT S TOTAL COMPANY $754 $815 $123 $130 (in millions) $0.57 (in millions) Adjusted EBITDA Adjusted EPS 8 + 8% (+8.5% excluding FX) + 6% (+7% excluding FX) + 14% (+16% excluding FX) Sales 9 Q3 2024 RESULTS – ORGANIC REVENUE GROWTH BY REGION VS PY 9 +9% +5% +11% +27% Avient ex.

Mariana Langiewicza 50, 95- 050 Konstantynow, Poland Avient Corporation - Korachi, Sindh Pakistan Design and Manufacture of Colour and Additive Concentrates, 1-A/1, Sector-20 , 74900 Korachi, Pakistan Avient Corporation Design and Manufacture of colour and additive concentrates, thermoplastic resins and specialty compounds Hohenrhein 1 Lahnstein Rheinland- Pfalz 5612 Germany Avient Corporation Design & Manufacturing of Colour and Additive Concentrates. Toluca 2000 Toluca Estado de México 50200 Mexico Page 4 of 5 Avient Corporation Design & Manufacture of Color, Additive Concentrate & Specialty Renaissance Industrial & Warehousing Complex, Unit No. Unit 3 Dodworth Business Park, Dodworth Barnsley South Yorkshire S75 3SP United Kingdom Page 5 of 5

Kunkle — 4,022(1) 321,750(1) 643,500(1) — — — — — — 28,875(2) 231,000(2) 462,000(2) — — — — — 2/17/2023 — — — 7,083(3) 21,250(3) — 42.93 269,117 11/1/2023 — — — (4) (4) — 42.93 95,223 11/1/2023 — — — (4) (4) — 52.64 27,135 11/1/2023 — — — (4) (4) — 42.27 5,130 2/17/2023 — — — — — 6,300(6) — 270,459 11/1/2023 — — — — — (7) — 151,675 11/1/2023 — — — — — (7) — 69,605 11/1/2023 — — — — — (7) — 15,354 R.M. 3) On November 1, 2023, Ms. Balance at 12/31/2022(1) Contributions in Last FY(2) Registrant Contributions in Last FY(3) Earnings in Last FY(4) Withdrawals/ Distributions Balance at Last FYE(1)(5) A.K.

A CUXK0XMKM92D910207D0 estratto dal Registro Imprese in data 01/12/2021 Indice 1 Sede 2 Informazioni da statuto/atto costitutivo 3 Trasferimenti d'azienda, fusioni, scissioni, subentri 4 Attività, albi ruoli e licenze 5 Sedi secondarie ed unita' locali 6 Aggiornamento impresa 1 Sede Indirizzo Sede legale 9638 POMMERLOCH 19 ROUTE DE BASTOGNE . VA/1 VIA PADRE LEGA 56 GALLARATE (VA) CAP 21013 Unita' Locale n. MI/1 informazioni estratte dal Registro Imprese di MILANO MONZA BRIANZA LODI Ufficio Data apertura: 21/12/2018 Indirizzo MAGENTA (MI) VIA ALESSANDRINI 56 CAP 20013 estremi di iscrizione Numero Repertorio Economico Amministrativo: MI - 2550085 dell'attività Importanza: prevalente svolta dall'impresa 6 Aggiornamento impresa Data ultimo protocollo 30/11/2021 Visura ordinaria societa' di capitale • di 10 10 1 ▪ Sede 2 ▪ Informazioni da statuto/atto costitutivo 3 ▪ Trasferimenti d'azienda, fusioni, scissioni, subentri 4 ▪ Attività, albi ruoli e licenze 5 ▪ Sedi secondarie ed unita' locali 6 ▪ Aggiornamento impresa

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Medical Hoses - Case Study Versalloy formulation boosts productivity for medical hose manufacturer

Medical Hoses - Case Study Versalloy formulation boosts productivity for medical hose manufacturer

ECCOH™ LSFOH LOW SMOKE AND FUME, NON-HALOGEN PROCESSING GUIDE To learn more about ECCOH wire and cable solutions, contact us at +1.844.4AVIENT (1-844.428.4368) www.avient.com General Extrusion Guidelines ECCOH™ compounds are thermoplastic polyolefin-based low smoke and fume, non-halogenated systems. EXTRUDER Screw 3/4" to 6" Polyethylene type—Single flight, no mixing section, 1.5–2:1 compression ratio Tooling Semi-Pressure type: 30°–40° angle Die On size with 1/8" or less land L/D 24:1 recommended Screen Pack No screen pack (Optional depending on pressure) Cooling Trough 120–150°F (50–65°C) recommended Feeder Gravimetric type preferred—3 compartment for cross-linked Dryer Desiccant type, 4 hours at 160°F (70°C) For ECCOH™ compound only; never put Dry Silane in Dryers PROCESSING Temperature ECCOH 5000 Series ECCOH 6000 Series Wire Preheat 180–250°F (80–120°C) 180–250°F (80–120°C) Feed Zones 200°F (93°C) 275°F (135°C) Transition 275°F (135°C) 325°F (163°C) Metering 300°F (150°C) 375°F (190°C) Head/Die 330°F (165°C) 420°F (215°C) Target Melt 330–340°F (165–170°C) 420–440°F (215–225°C) Flame at Die Tip Yes—as needed Line Speed Shear sensitive: Observe Melt Temperature, Motor Amperage, and Pressure Purge Compound HDPE Copyright © 2020, Avient Corporation.

Yes. 4. 1 to 21 days based on the specific product and/or process. 3. The policy can be found at www.polyone.com 4.