We are Avient. 6 BETTER TOGETHER: POLYONE AND CLARIANT MASTERBATCH Key Financial Data (1) 2021E Sales $4.3 billion 2021E EBITDA $560 million 2021E Free Cash Flow $275 million 88% of EBITDA from specialty applications (1) As of April 30, 2021 webcast Synergies ($ millions) Three-Year Estimate Administrative $ 20 Sourcing 30 Operational 25 Total Synergies $ 75 7 CLARIANT COST SYNERGIES • On-track to realize $45 million of expected synergies in 2021 – up from previous estimate of $35 million • Relentless focus on guiding principles for acquisition integration: safety first, employee collaboration and exceeding customer expectations • Future revenue synergies in excess of $50 million by 2025 are not part of these estimates and represent additional growth over the long term 8 • Barrier technology • Functional additives • Processing aids • Flame retardants • Light-weighting additives Complementary Technologies • Clariant’s approved formulations and certified facilities • Legacy PolyOne’s leading share in distribution channels Healthcare Solutions • Clariant’s position in SE Asia, Latin America, Germany & Italy • Legacy PolyOne’s position in U.S., Canada and China Regional Strengths • Solutions with Avient’s engineered materials customers • Avient’s distribution channels Segment Cross-selling COMPLEMENTARY TECHNOLOGIES AND CUSTOMERS DRIVE REVENUE SYNERGIES Revenue synergy opportunities in excess of $50MM by 2025 The complementary aspects of our combined businesses are unquestionable. This innovation drives performance and is reflective of consistent, strategic investments in our portfolio…and people. 2020 Pro forma $991 $86 Sustainable Solutions 15 11% 6 Healthcare 28 22% 6 Composites 6 10% 3 Growth in Emerging Regions 44 30% 10 Other 53 10% 7 Sub-total $1,137 15% $118 FX Impact 25 - 2 Synergies - - 11 Incentives, Travel, Other Employee Costs - - (8) 2021 Actual $1,162 17% $123 Q1 2021 ORGANIC SALES AND OPERATING INCOME 18 (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition Sales Growth Rate Operating Income$ millions 19 Wire & Cable Transportation Industrial Healthcare Packaging Consumer Q1 2020PF Q1 2021 (2) Financial information is presented on a constant currency basis (1,2) (42% of total revenue) (58% of total revenue) Q1 END MARKET SALES PERFORMANCE +17% +14% +8% +10% +8% +22% +5% +24% Q 2 AN D FU LL Y EA R 2021 O U TLO O K $69 $112 $0.42 $0.80 ORGANIC GROWTH PROJECTIONS – Q2 21 Sales Adjusted Operating Income $870 $1,100 + 26% + 62% + 90% (1) (1) (1) (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition FULL YEAR GUIDANCE INCREASED 22 Sales Adj. Whether an additional line at an existing manufacturing plant, or a new facility in a growing region, we ramp-up quickly and cost-efficiently. 26 Capex / Revenue 2021E (%) AVIENT IS ASSET LIGHT Avient Specialty Other 2 3 2 2 2 3 3 4 3 3 3 4 4 5 5 5 6 7 7 8 24 t (E xc l.

CORAL PEARL NYLON Q520 6-3 WHT NYLON G/F VERS2 PP FR 8-6 LMS-1000

OEM AUTOMOTRIZ DESTACADO B A S T I D O R P A R A T E C H O • Resistencia a impactos • Estabilidad UV a largo plazo • Igualado al color negro específico • Se desarrolló un acuerdo de cadena de suministro a fin de asegurar un suministro confiable y mitigar los riesgos • Se proporcionó la entrega justo a tiempo para ayudar al cliente a mantener bajos niveles de capital de trabajo y optimizar el espacio de almacenamiento • Se proporcionó un producto que favorece la sustentabilidad a fin de aumentar potencialmente, el atractivo comercial del producto final para el cliente Formulación de nylon reciclado postindustrial Nymax™ PIR REQUERIMIENTOS CLAVE ¿POR QUÉ AVIENT?

INDUSTRIAL EQUIPMENT MANUFACTURER H O U S I N G F O R C R A N E C O N T R O L • High impact performance, charpy notched > 60kJ/m2 • Part assembly: tight dimensional tolerances ±0.05mm • Critical weld lines are invisible on the final part • Red RAL 3020 as branding color • Color stability during injection • Offered a nylon (PA66) formulation with high impact resistance and dimensional stability • Supported injection trials with field technical services • Developed a ready-to-use solution in RAL 3020 with excellent color stability, helping to reduce scrap rate from >50% to 4% • Enabled timely production through fast new developments and samplings • Offered additional color options Bergamid Polyamide Formulations KEY REQUIREMENTS WHY AVIENT?

The new materials also offer sustainability benefits over the product lifecycle through carbon footprint reductions compared to competitive materials—PK base resin production emits up to 61 percent less carbon dioxide (CO2) than nylon and POM.

The new materials also offer sustainability benefits over the product lifecycle through carbon footprint reductions compared to competitive materials—PK base resin production emits up to 61 percent less carbon dioxide (CO2) than nylon and POM.

The new materials also offer sustainability benefits over the product lifecycle through carbon footprint reductions compared to competitive materials—PK base resin production emits up to 61 percent less carbon dioxide (CO2) than nylon and POM.

The new materials also offer sustainability benefits over the product lifecycle through carbon footprint reductions compared to competitive materials—PK base resin production emits up to 61 percent less carbon dioxide (CO2) than nylon and POM.

The new materials also offer sustainability benefits over the product lifecycle through carbon footprint reductions compared to competitive materials—PK base resin production emits up to 61 percent less carbon dioxide (CO2) than nylon and POM.

Avient will exhibit newly launched OnColor™ Durable Orange Nylon Colorants for high-voltage electric vehicle (EV) connectors. Versaflex™ TF Adhesive TPE for Textile Fabrics: a cost-effective alternative to TPU adhesive films and traditional glues, free of plasticizers, with low VOC content, OEKO-TEX 100-2 compliance, and excellent washability up to 60°C, combining strong and seamless adhesion to polyester and nylon fabrics with outstanding elastic recovery for high wearing comfort in target applications such as functional sports attire, fitness apparel, and underwear Bergamid™ FR Non-Halogen Flame Retardant Formulations: developed for high-voltage connectors, designed to combine the application flexibility of high-flow nylons for thin-wall designs with the sustainable performance of a non-halogenated fire retardant system, available in unfilled or reinforced PA6, PA66 and PA 6/66 grades with UL 94 V0 and CTI 800+ ratings