Richardson Executive Vice President, Chief Financial Officer PolyOne Corporation Page 15 Track Record of Accelerated Growth Total Revenue Adjusted EPS Adjusted EBITDA $2,061 $2,506 $2,709 $2,861 $3,771 2009 2010 2011 2012 2013 ($ in millions, except EPS ) $105 $179 $202 $255 $344 2009 2010 2011 2012 2013 $0.13 $0.68 $0.82 $1.00 $1.31 2009 2010 2011 2012 2013 PolyOne Corporation Page 16 $0.31 $0.44 $0.20 $0.30 $0.40 Q1 2013 Q1 2014 Adjusted EPS $42 $60 $20 $40 $60 Q1 2013 Q1 2014 Specialty Operating Income ($ millions) Q1 2014 Financial Highlights  Growth momentum accelerates driven by specialty platform  Specialty segments and Distribution achieve record results  All segments increase operating income compared to prior year  Revenue grew 25% versus Q1 2013 +43% +42% $57 $79 $30 $60 $90 Q1 2013 Q1 2014 Adjusted Operating Income ($ millions) +39% PolyOne Corporation Page 17 Commitment to Operational Excellence 81% 96% 2006 2013 16.2% 10.9% 2006 2013 On-Time Delivery Working Capital % of Sales 5.0% 31.0% 2006 2013 Percent of Associates Trained in LSS  Three consecutive years – CFO Magazine Best Working Capital Management Program in the chemical industry World’s Best Business Process Excellence Program in 2012*  95 certified Black Belts  211 certified Green Belts  422 Project Leaders World’s Best “Start-up Program” for Lean Six Sigma Deployment in 2009* *Both awards received from International Quality and Productivity Center PolyOne Corporation Page 18 Debt Maturities & Pension Funding – 3/31/14 Net Debt / EBITDA* = 1.9x $48 $317 $600 $0 $100 $200 $300 $400 $500 $600 $700 $800 2015 2020 2023 Debt Maturities As of March 31, 2014 ($ millions) Coupon Rates: 7.500% 7.375% 5.250% *TTM 12/31/2013 ** includes US-qualified pension plans only 60% 100% 20% 30% 40% 50% 60% 70% 80% 90% 100% 2008 2014 Pension Funding** As of March 31, 2014 PolyOne Corporation Page 19 Free Cash Flow and Strong Balance Sheet Fund Investment / Shareholder Return $0.16 $0.20 $0.24 $0.32 $0.10 $0.20 $0.30 $0.40 2011 2012 2013 2014 Annual Dividend Expanding our sales, marketing, and technical capabilities Targets that expand our: • Specialty offerings • End market presence • Geographic footprint • Operating Margin Synergy opportunities Adjacent material solutions Repurchased 1.4 million shares in Q1 2014 Repurchased 6.4 million shares since April 2013  13.6 million shares are available for repurchase under the current authorization Organic Growth Acquisitions Share Repurchases Dividends  Investing in operational and LSS initiatives (including synergy capture) Manufacturing alignment PolyOne Corporation Page 20 3.07 3.05 1.81 1.45 1.82 1.54 0.85 3.15 1.17 1.69 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 0.91 PolyOne Valuation Aspirations PEG Ratio Comparison Represents $38 of share price upside Avg = 1.96 PolyOne Corporation Page 21 Innovating for the Future Dr. Christopher Murphy Vice President, Research and Development Chief Innovation Officer PolyOne Corporation Page 22 2 lbs Plastic = 3 lbs aluminum or 8 lbs steel or 27 lbs glass 33% less material by weight than aluminum 75% less material by weight than steel 93% less material by weight than glass Requires 91% less energy to recycle a pound of plastic versus a pound of paper Source: SPI: Sustainability and the Plastics Industry Plastics: Key to Future Sustainable Development PolyOne Corporation Page 23 Decreasing Dependence on Fossil Fuels Globalizing and Localizing • Aging population • Longer life expectancy • Healthy living • Aging in place • Environmental consciousness • Alternative energy • Resource efficiency • Biotechnology • Global leader/local expert with customized solutions • Global OEMs seeking one standard of service everywhere • Efficiency focus • Reduced size/weight • Mass transit • Alternative materials • Electric vehicles Protecting the Environment Improving Health and Wellness Alignment with Megatrends PolyOne Corporation Page 24 Innovation Drives Earnings Growth $20 $53 2006 2013 Research & Development Spending ($ millions) Specialty Platform Vitality Index Progression* *Percentage of Specialty Platform revenue from products introduced in last five years 14.3% 30.7% 2006 2013 Specialty Platform Gross Margin % 19.5% 43.0% 2006 2013 PolyOne Corporation Page 25 Prototype Frame Opportunity Scale-up & Test Market Build Business Case Commercial Launch Phase 1 Phase 2 Phase 3 Phase 4 Phase 5 4 11 5 10 6 9 3 4 2 15 9 1 10 4 Breakthrough Platform Derivative A Rich Pipeline of Opportunity Number of Projects 25 14 19 17 18 93 Addressable Market ($ millions) TBD TBD $800 $450 $450 $1,700 PolyOne Corporation Page 26 Recent Innovations Aligned with Megatrends in Key End Markets and 2015 Goals Robert M. Patterson President and Chief Executive Officer PolyOne Corporation Page 36 PolyOne Core Values Innovation Collaboration Excellence PolyOne Corporation Page 37 Innovation Drives Earnings Growth $20 $53 2006 2013 Research & Development Spending ($ millions) Specialty Platform Vitality Index Progression* *Percentage of Specialty Platform revenue from products introduced in last five years 14.3% 30.7% 2006 2013 Specialty Platform Gross Margin % 19.5% 43.0% 2006 2013 PolyOne Corporation Page 38 Formula for Success Innovation Market Beating Performance Excellence in Execution PolyOne Corporation Page 39 Track Record of Successful Integrations and Rapid Operating Income Growth $12 $44 2007 2013 $22 $30 2012 2013 $24 $49 2012 2013 GLS ColorMatrix Spartech OI in $ millions PolyOne Corporation Page 40 2015 and Beyond Innovation will drive the next stage in our remarkable transformation Deliver on 2015 goals Expand Specialty offerings and possibilities Identified as a truly global, specialty chemical company Market Potential Exceeds $40 Billion PolyOne Corporation Page 41 Driving Toward Premier Profitability EBIT Margins for top tier companies Victrex 42% Sigma Aldrich 18% FMC 25% IFF 18% Eastman 17% Hexcel 16% 16% Rockwood Holdings Celanese 14% 7% EBIT Margin – 2013 Albemarle 24% Ecolab 13% PolyOne Corporation Page 42 Bright Future & High Aspirations – The Next Seven Years • % OP Income from Specialty - 5% • Market Cap - $500 Million • Revenue - $2.6 Billion • Commodity Peers • Specialty ROS - 1.5% • % OP Income from Specialty - 62% • Market Cap - $3.5 Billion • Revenue - $3.7 Billion • Specialty ROS - 9.4% • % OP Income from Specialty - 80 to 90% • Market Cap - $12 to $18 Billion • Revenue - $8 to $10 Billion • Specialty Peers • Specialty ROS - ≥ 20% 2000 – 2006 2007 – 2013 2014 – 2020 PolyOne Corporation Page 43 The New PolyOne: A Specialty Growth Company Why Invest In PolyOne?

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.

KEY CHARACTERISTICS • Customized density offering a wide range of specific gravities (1.2–11 gm/cm3) • Based on recycled resin from PIR and PCR sources • Broad modulus range, from very flexible to very rigid grades • Corrosion resistance that withstands oxidization for long-term use and benefit • Chemical resistance can be adapted depending on base resin as required • Provides visual surface effects, aesthetics, and cool touch • Design flexibility and processing ease MARKETS AND APPLICATIONS Applications in packaging and consumer goods in which a more sustainable solution is preferred: • Cosmetic caps and closures • Perfume caps • Spirit bottle caps • Luxury boxes • Handles and knobs SUSTAINABILITY BENEFITS • Formulated with recycled resin from post-industrial recycled (PIR) and/or post-consumer recycled (PCR) sources including ocean bound plastic waste • Reduces waste and supports the circular economy • Reduces carbon footprint compared to fossil feedstock alternatives • Simplifies manufacturing and lowers costs versus metal PRODUCT BULLETIN CHARACTERISTICS UNITS Gravi-Tech REC-CI GT5200-5089 PT Natural Gravi-Tech REC GT5200-5075 Black X2 Gravi-Tech REC GT5200-5078 Gravi-Tech REC GT5200-5079 Gravi-Tech REC GT5200-5060 Gravi-Tech REC GT5200-5057 Base Resin Ocean Bound rPP rPP rPP rPP rPP rPP Recycled Content/Filler g/cm >98% PIR+PCR 60% PIR/Mineral >95% PIR/Mineral >95% PIR+PCR/Mineral 30% PIR/Mineral 30% PIR/Mineral Density (ISO 1183) g/ccm 1.2 1.2 1.2 1.2 1.9 2.0 CHARACTERISTICS UNITS Gravi-Tech REC GT7300-5034 X2 FD Natural Gravi-Tech REC GT7300-5036 Gravi-Tech REC GT7300-5025 Gravi-Tech REC GT6000-5032 GT6000-5031 Base Resin ABS rABS/ABS rABS rPA6 rPA6 Recycled Content/Filler g/cm 50% PIR/Mineral 65% PIR/Mineral 10% PIR/Mineral 20% PIR/Mineral 20% PIR/Mineral Density (ISO 1183) g/ccm 1.5 1.5 2.2 2.7 2.8 AVAILABLE GRADES Copyright © 2024, Avient Corporation.

Weight reductions of 10 to 20% can be achieved in injection-molded plastic components such as interior trim parts, dashboard carriers, door parts, glove boxes, and blow-molded parts such as air duct systems. This cellular structure results in weight reductions of 15 to 30% in films and sheets and 20 to 40% in pipes, profiles, and boards.

PERFORMANCE Increased Bottle Strength (Based on 14.5g 0.5L bottles) Up to 25% Energy Saving Potential (Based on commercial blowing line 51,000bph 8.5g 0.5L bottles) TECHNICAL BULLETIN 0 20 40 60 80 100 0% 5% 10% 15% 20% 25% 6.4 6.5 6.6 6.7 6.8 6.9 7.0 7.1 7.2 15.2 15.4 15.6 15.8 16.0 16.2 16.4 16.6 16.8 Top Load vs.

Purchase price multiple rapidly declining on strength of business and synergy capture 7 $133 $201 2019PF 2022E 7 Clariant Color EBITDA Growth Purchase Price Multiple 10.8x 7.0x 6.4x 2019PF 2021 2022E w/ Full Synergies 11.9% 16.3% 2019PF 2022E EBITDA Margins CLARIANT COLOR: TRANSFORMATIONAL ACQUISITION (1) Financial information is pro forma to include a full year of Clariant Color business SUNBELT PVC Resins DSS 20 Acquisitions $4.8B Investment $2.7B of Annual Revenue 5 Divestments $2.3B Proceeds TPE PP&S HISTORIC SPECIALIZATION THROUGH M&A 8 Distribution DSM Protective Materials BOLT-ON ACQUISITION HISTORY 9 Commercial Resources Operating Income Operating Margins 259 363 $40 $139 Established Acquisitions (> 7 years) + 40% + 248% + 1300 bps I N V E S T T O G R O W SPECIALTY TRANSFORMATION T O D A Y 46% 67% 86% 100% 0% 60% 80% 100% 2005 2010 2019 2021 2022 PF % o f A d ju st ed E B IT D A • Commodity JVs • Distribution • Performance Products & Solutions • Specialty Businesses (1) Adjusted EBITDA is EBITDA excluding corporate costs and special items (2) Pro forma for the acquisition of Dyneema® and divestiture of Distribution (1 ) (2) 10 Building & 43% 14% Telecom. 2% 2006 2022 Pro Forma 21% Building & Telecom. EBITDA Margins • 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 ar e 2022 PRO FORMA ADJUSTED EPS Earnings Growth Expanding Profitability $0.15 $1.09 $2.08 $2.67 2009 2012 2015 2018 2022PF T H IR D Q UART ER 2022 RE S U LTS $110 $119 $0.61 $0.59 Q3 2022 PERFORMANCE (TOTAL COMPANY CONT. Sales EBITDA Specialty Engineered Materials Color Additives and Inks $585M$3,635M 23 C O L O R , A D D I T I V E S & I N K S 2022 REVENUE | $2 .3 B ILL ION US & Canada Latin America END MARKET REGION 24 33% Building & 1% Energy Figures represent 2022 full year estimates 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 2022 PRO FORMA REVENUE | $1 .3 B ILL ION END MARKET US & Canada 50% REGION 25 Figures represent 2022 full year estimates 19% 8%Industrial 16% Building & 31% 28% 13% Building & 3% 2% Defense (20% of sales) 2022 PROFORMA AVIENT REGIONAL SALES BY END MARKET 29% 13% 17% Building & (35% of sales) 14% Building & 12% US & Canada (40% of sales) 49% Building & LATAM (5% of sales) 3%Telecommunications Figures represent 2022 full year estimates 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.

PRIOR YEAR $790 $710 2022 2023 $107 $112 2022 2023 Sales Adjusted EBITDA $0.42 $0.47 2022 PF 2023 Adjusted EPS - 10% + 5% + 12% Sales Adjusted EBITDA Adjusted EPS 12 $112 $500 $0.47 $2.30 Q4 AND FULL YEAR 2023 GUIDANCE $710 $3,130 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 TAI NABI L I T Y DAY RE CAP 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 CREATING A WORLD-CLASS SUSTAINABLE ORGANIZATION 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 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: 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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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.