Newlin Page 105 Old PolyOne Transformation 60% 80% 100% % o f O p e ra ti n g I n co m e * Mix Shift Highlights Specialty Transformation Ahead of Schedule 2015 Target *Operating Income excludes Corporate Charges ** Pro Forma for the acquisition of ColorMatrix and divestiture of SunBelt 2% 34% 42% 50% 65-75% 0% 20% 40% 2005 2008 2011 2011** 2015 % o f O p e ra ti n g I n co m e * JV's PP&S Distribution Specialty Specialty OI $5M $46M $89M $117M Target Page 106 Why Invest In PolyOne?

G L O B A L E L A S T I C & R U B B E R P R O D U C T M A N U FA C T U R E R T O U R N I Q U E T B A N D • Hardness 45, shore A • Thickness 0.5mm and Tensile set

With more than 20 years of experience in the specialty polymer sector, Mr.

Beggs joined Avient in August 2020 and has more than 20 years of experience in finance and business leadership roles in both public and private organizations with an emphasis on specialty materials and diverse end markets.

PRIOR YEAR $790 $710 2022 2023 $107 $112 2022 2023 Sales Adjusted EBITDA (in millions) $0.42 $0.47 2022 PF 2023 Adjusted EPS (in millions) - 10% + 5% + 12% Sales Adjusted EBITDA Adjusted EPS 12 $112 $500 Q4 FY $0.47 $2.30 Q4 FY Q4 AND FULL YEAR 2023 GUIDANCE $710 $3,130 Q4 FY Sales Adjusted EBITDA Adjusted EPS 13 (in millions) (in millions) Guidance: Free Cash Flow $180 $180 Prior Guidance Guidance FREE CASH FLOW & INCREASED DIVIDEND 13th Consecutive Dividend Increase 0.16 0.26 0.42 0.58 0.79 0.85 0.99 1.03 2011 2013 2015 2017 2019 2021 2023 2024 14 S U S T A I N A B I L I T Y D AY R E C A P SUSTAINABILITY AS A GROWTH DRIVERLONG-TERM REVENUE GROWTH DRIVERS 60%+ Key Growth Drivers Sustainable Solutions Composites, Healthcare, Asia / LATAM Overlap Other (GDP Growth) Total Company Revenue Growth Drivers Long-Term Growth Rate Sustainable Solutions 8–12% Composites 8–10% Healthcare 8–10% Asia / LATAM 5% Other (GDP growth) 0–2% Avient 6% 17 SUSTAINABILITY TRENDS DRIVE LONG-TERM GROWTH 8-12% Long Term Growth 50 90 2022 2030 Medical Plastics Market Size (in $Billions) 2020 2030 Recycled Plastics Virgin Plastics Growing Demand for Recycled Content Avient Sustainable Solutions 18 46 2023 2032 Global Offshore Annual Wind Installations (in Gigawatts) Sources: McKinsey, Bloomberg, Grand View Research SUSTAINABILITY TRENDS DRIVE LONG-TERM GROWTH 18 • Transformative acquisitions combined with divestitures of more cyclical businesses have improved margins over 400 bps since 2018 • 20% long-term margin goal to be driven by key growth drivers, with sustainable solutions playing a meaningful role 5.4% 11.5% 16.0% 2006 2018 2023E Recovery Growth Drivers Strategic Objective 20%+ +1%+ +3%+ ADJUSTED EBITDA MARGIN EXPANSION 19 • 6% annualized long-term sales growth leveraging sustainable solutions, composites, healthcare, and emerging regions • Expand EBITDA margins to 20% • Deliver annual EBITDA and EPS growth of 10% and 15% • Maintain asset-light, 80% free cash flow conversion profile and be valued as a specialty formulator • Continue fostering our Great Place to Work® culture CRE AT ING A WORL D-CL AS S S US TAINABL E ORGANIZ AT ION 20 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. Three Months Ended September 30, 2023 Three Months Ended September 30, 2022 Reconciliation to Condensed Consolidated Statements of Income: $ EPS $ EPS Net income (loss) from continuing operations attributable to Avient shareholders $ 5.1 $ 0.06 $ (27.4) $ (0.30) Special items, after tax 32.0 0.35 68.3 0.75 Amortization expense, after-tax 15.2 0.16 $ 13.4 $ 0.14 Adjusted net income / EPS $ 52.3 $ 0.57 $ 54.3 $ 0.59 Three Months Ended September 30, Reconciliation to EBITDA and Adjusted EBITDA: 2023 2022 Sales - GAAP $ 753.7 $ 823.3 Pro Forma APM adjustments — 60.7 Pro forma adjusted sales $ 753.7 $ 884.0 Net income from continuing operations – GAAP $ 5.1 $ (27.8) Income tax (benefit) expense (0.1) (1.2) Interest expense, net 30.3 37.3 Depreciation and amortization 46.4 39.8 EBITDA from continuing operations $ 81.7 $ 48.1 Special items, before tax 43.2 82.0 Interest expense included in special items (2.2) (10.0) Depreciation and amortization included in special items — (0.8) Adjusted EBITDA $ 122.7 $ 119.3 Pro forma APM adjustments — 17.2 Pro forma adjusted EBITDA $ 122.7 $ 136.5 Pro forma adjusted EBITDA as a % of sales 16.3 % 15.4 % 1 Year Ended December 31, Reconciliation to EBITDA and Adjusted EBITDA: 2006 2018 Sales $ 2,622.4 $ 3,533.4 Net income from continuing operations – GAAP $ 133.5 $ 160.8 Income tax expense 29.7 36.4 Interest expense, net 63.1 62.8 Depreciation and amortization 57.1 91.5 EBITDA from continuing operations $ 283.4 $ 351.5 Special items, before tax (34.0) 59.5 Depreciation and amortization included in special items — (3.0) JV - equity income (107.0) — Adjusted EBITDA $ 142.4 $ 408.0 Adjusted EBITDA as a % of sales 5.4 % 11.5 % Reconciliation to EBITDA and Adjusted EBITDA: Three Months Ended December 31, 2022 Net loss from continuing operations – GAAP $ (16.6) Income tax benefit (60.8) Interest expense, net 49.4 Depreciation and amortization 48.6 EBITDA from continuing operations $ 20.6 Special items, before tax 104.3 Interest expense included in special items (16.0) Depreciation and amortization included in special items (1.5) Adjusted EBITDA $ 107.4 Reconciliation of Pro Forma Adjusted Earnings per Share: Three Months Ended December 31, 2022 Net loss from continuing operations attributable to Avient shareholders $ (17.0) Special items, after tax 38.3 Amortization expense, after-tax 14.6 Adjusted net income from continuing operations excluding special items 35.9 Pro forma adjustments* 2.5 Pro forma adjusted net income from continuing operations attributable to Avient shareholders $ 38.4 Weighted average diluted shares 91.7 Pro forma adjusted EPS - excluding special items pro forma for APM acquisition $ 0.42 * Pro forma adjustment to reflect APM results for the period before Avient ownership including the impacts of debt financing and paydown of debt with net proceeds from the Distribution sale. 2 AVNT Q3 2023 Earnings Presentation Avient corporation�Third quarter 2023 results DISCLAIMER Slide Number 3 Avient protective materials �First Year Slide Number 5 Slide Number 6 Slide Number 7 Slide Number 8 Slide Number 9 Slide Number 10 Slide Number 11 Slide Number 12 Slide Number 13 Slide Number 14 Slide Number 15 Slide Number 16 Slide Number 17 Slide Number 18 Slide Number 19 Slide Number 20 Slide Number 21 IR Deck - AVNT-2023.09.30 Non GAAP Recs Attachment

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Wydruk informacji pobranej w trybie art. 4 ust. 4aa ustawy z dnia 20 sierpnia 1997 r. o Krajowym Rejestrze Sądowym, posiada moc dokumentu wydawanego przez Centralną Informację, nie wymaga podpisu i pieczęci. Dział 3 Rubryka 1 ­ Przedmiot działalności 1.Przedmiot przeważającej działalności przedsiębiorcy 1 20, 12, Z, PRODUKCJA BARWNIKÓW I PIGMENTÓW 2.Przedmiot pozostałej działalności przedsiębiorcy 1 46, 12, Z, DZIAŁALNOŚĆ AGENTÓW ZAJMUJĄCYCH SIĘ SPRZEDAŻĄ PALIW, RUD, METALI I CHEMIKALIÓW PRZEMYSŁOWYCH 2 20, 16, Z, PRODUKCJA TWORZYW SZTUCZNYCH W FORMACH PODSTAWOWYCH 3 46, 75, Z, SPRZEDAŻ HURTOWA WYROBÓW CHEMICZNYCH 4 69, 20, Z, DZIAŁALNOŚĆ RACHUNKOWO-KSIĘGOWA; DORADZTWO PODATKOWE 5 23, 69, Z, PRODUKCJA POZOSTAŁYCH WYROBÓW Z BETONU, GIPSU I CEMENTU 6 63, 11, Z, PRZETWARZANIE DANYCH; ZARZĄDZANIE STRONAMI INTERNETOWYMI (HOSTING) I PODOBNA DZIAŁALNOŚĆ 7 68, 20, Z, WYNAJEM I ZARZĄDZANIE NIERUCHOMOŚCIAMI WŁASNYMI LUB DZIERŻAWIONYMI Rubryka 2 ­ Wzmianki o złożonych dokumentach Rodzaj dokumentu Nr kolejny w polu Data złożenia Za okres od do 1.Wzmianka o złożeniu rocznego sprawozdania finansowego 1 07.06.2002 2001 2 02.07.2003 01.01.2002 - 31.12.2002 3 30.09.2004 OD 01.01.2003 DO 31.12.2003 4 28.06.2005 OD 01.01.2004 DO 31.12.2004 5 19.07.2006 01.01.2005-31.12.2005 6 18.06.2007 01.01.2006 R. - 31.12.2006 R. 7 27.06.2008 01.01.2007 R. - 31.12.2007 R. 8 02.07.2009 01.01.2008 R. - 31.12.2008 R. 9 30.07.2010 01.01.2009 - 31.12.2009 10 06.07.2011 2010 ROK 11 23.08.2012 01.01.2011-31.12.2011 12 25.07.2013 01.01.2012R.-31.12.2012R.

Revised: December 20, 2024 AVIENT CORPORATION Securities Trading Policy 1. The potential penalties are severe and may include a jail term of up to 20 years, a fine of up to $5,000,000 and a civil penalty of up to three times the profit gained or loss avoided. 16. Revised: December 20, 2024 ANNEX A COVERED EMPLOYEES All Directors All Elected Officers All Appointed Officers Assistant Controller Executive Assistants to Covered Employees Corporate Communications/Investor Relations (all levels) Internal Audit VP, Directors, Managers and Staff of Audit (all levels), Tax Managers and Tax Analysts, Staff of Tax (all levels) Directors, Managers and Staff, Mergers and Acquisitions and functional professionals supporting Mergers and Acquisitions (including Legal professionals) All Other Employees (including Finance and IT employees) with access to full quarterly results within the Avient Systems Secretaries and Direct-Reporting Assistants to any Covered Employee Financial and Business Consultants who have undertaken to comply with this policy Revised: December 20, 2024 ANNEX B Please access the PeopleLink home page and search for “pre-clearance” after clicking “My Help” General Counsel: Amy M.

EXTRUDER Screw 1" to 6" deep flighted metering screw 3:1 compression ratio Tooling Tubing type – zero land (for smaller sizes) Pressure type – for 1" size or larger Die Tubing type – low DDR Pressure type – short land L/D 24:1 or higher Screen Pack 20/40/20 Mesh Cooling Trough 120–150 °F (50–65 °C) recommended Dryer Hot air or desiccant type, 4 hours at 175–185 °F PROCESSING Temperature Wire Preheat None Feed Zones 290–300 °F Transition 320–340 °F Metering 340–350 °F Head/Die 350–365 °F Target Melt 350–365 °F Maximum Melt 390 °F Purge Compound HDPE www.avient.com Copyright © 2020, Avient Corporation.

EXTRUSOR Tornillo Tornillo de regulación de rosca profunda de 1" a 6" Relación de compresión 3:1 Cabezal De tubo: sin hilera (para tamaños pequeños) De presión: para tamaños de 1" o superiores Dado De tubo: bajo coeficiente de estirado De presión: hilera corta L/D 24:1 o superior Paquete de mallas Malla de 20/40/20 Canal de enfriamiento 50–65°C recomendado Secador Aire caliente o desecante, 4 horas a 79–85°C PROCESAMIENTO Temperatura Precalentamiento del alambre Ninguno Zonas de alimentación 143–149°C Transición 160–171°C Dosificación 171–176°C Cabezal/dado 176–185°C Material fundido 176–185°C Fusión máxima 199°C Compuesto de purga HDPE www.avient.com Copyright © 2020, Avient Corporation.