CLEVELAND – PolyOne Corporation, a leading global provider of specialized polymer materials, services and solutions, is investing in its GSDI specialty dispersions business to better serve customers, improve operational efficiency, and launch innovative new colorant and additive solutions for silicone and other thermoset applications. Van Hulle, president, Color, Additives and Inks, PolyOne Corporation. PolyOne Corporation, with 2015 revenues of  $3.4 billion, is a premier provider of specialized polymer materials, services and solutions.

AVIENT: WHO WE ARE 36 24 9 35 • U.S. and Canada • Latin America • Europe, Middle East & Africa • Asia 25,000+ CUSTOMERS Headquartered in Avon Lake, OH (Cleveland) 100+ manufacturing plants Key Financial Data 2023E Sales $3.4 billion 2023E EBITDA $530 million 2023E EPS $2.40 100% ARE CUSTOMIZED SOLUTIONS TO UNIQUE SPECIFICATIONS of sales Guidance as of May 3, 2023 Webcast WHO WE ARE – VISION, STRATEGY, CULTURE 4 Avient Corporation (NYSE: AVNT) provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. WHAT WE DO: MATERIAL SCIENCE 5 CUSTOM FORMULATION M AY 3 , 2023 W EB CAS T Keeping Safety First o Relentless focus on best-in-class safety performance as an ACC Responsible Care® organization Exceeding Customer Expectations o Complementary technologies and customer relationships offer opportunity for future revenue synergies o Proven innovation-led commercial strategy with strong brands and participation across the full value chain Collaboration in Innovation o Leveraging Dyneema®, the world’s strongest fiber™, to accelerate growth of sustainable, ultralight and high performance applications People – Culture is Everything o Talented, passionate and collaborative associates drive an effective integration strategy o Strong Great Places to Work® scores reflect positive integration efforts in first year AVIENT PROTECTIVE MATERIALS INTEGRATION 7 AVIENT PROTECTIVE MATERIALS K E Y I N D U S T R I E S PERSONAL PROTECTION Military • Law Enforcement • First Responders • Body Armor • Helmets • Vehicle Protection 50% MARINE & SUSTAINABLE INFRASTRUCTURE Towing / Mooring • Aquaculture • Floating Wind • Offshore Cranes 30% CONSUMER Consumer • Outdoor High Performance • Safety Equipment 8 Figures reflect approximate proportions of 2022 sales Q 1 P ER FO RM A N CE Q1 2023 PERFORMANCE VS. Three Months Ended March 31, 2023 Three Months Ended March 31, 2022 Reconciliation to Condensed Consolidated Statements of Income $ EPS $ EPS Net income from continuing operations attributable to Avient shareholders $ 20.8 $ 0.23 $ 64.4 $ 0.70 Special items, after tax 22.3 0.24 6.4 0.07 Amortization expense, after-tax 15.1 0.16 $ 10.8 $ 0.12 Adjusted net income / EPS $ 58.2 $ 0.63 $ 81.6 $ 0.89 March 31, Reconciliation of Pro Forma Sales 2023 2022 Sales $ 845.7 $ 892.2 APM pro forma adjustments — 94.9 Pro forma sales $ 845.7 $ 987.1 1 Three Months Ended Reconciliation to EBITDA and Adjusted EBITDA: 2023 2022 Net income from continuing operations – GAAP $ 21.3 $ 64.7 Income tax expense 7.7 20.0 Interest expense, net 28.8 16.9 Depreciation and amortization 50.5 37.6 EBITDA from continuing operations $ 108.3 $ 139.2 Special items, before tax 27.3 6.7 Depreciation and amortization included in special items (1.8) (2.1) Adjusted EBITDA $ 133.8 $ 143.8 Pro forma APM adjustments — 32.0 Pro forma adjusted EBITDA $ 133.8 $ 175.8 Pro forma adjusted EBITDA as a % of sales 15.8 % 17.8 % 2023 2022 Sales: Color, Additives and Inks $ 537.0 $ 649.5 Specialty Engineered Materials 309.7 243.1 Corporate (1.0) (0.4) Sales $ 845.7 $ 892.2 Operating income: Color, Additives and Inks $ 65.6 $ 94.5 Specialty Engineered Materials 43.1 38.3 Corporate (51.6) (30.6) Operating income $ 57.1 $ 102.2 Depreciation & amortization: Color, Additives and Inks $ 25.8 $ 26.0 Specialty Engineered Materials 21.2 7.8 Corporate 3.5 3.8 Depreciation & Amortization $ 50.5 $ 37.6 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 91.4 $ 120.5 Specialty Engineered Materials 64.3 46.1 Corporate (48.1) (26.8) Other income (expense), net 0.7 (0.6) EBITDA $ 108.3 $ 139.2 AVNT Fermium Conference - May 2023.pdf AVNT Q1 2023 Earnings Presentation.pdf AVNT Q1 2023 Earnings Presentation 5.2 221pm IR Deck - AVNT-2023.03.31 (002).pdf

The chemical bonds are zig-zag in configuration, resulting in a lower tensile and modulus fiber. °C TBD Meta-Aramid Properties CHEMICAL COMPATIBILITY Chemical Resistance to Acid: Strength loss in H2SO4 below acid dew point. They also add important characteristics, such as SWELLCOAT® water-blocking, water repellence, adhe- sion, color, and wear and UV-resistance to these and many other applications.

Polymer Colorants OnColor™ NIR Sortable Colorants Dispersed Pigments: Colorant Chromatics™

currently produces color and additive concentrates and engineered polymer solutions at the enables manufacturers to source all of their specialty polymer requirements from a single domestic source. premier provider of specialized polymer materials, services and solutions.

COLORANT CHROMATICS HIGH-TEMPERATURE POLYMER FORMULATIONS PRODUCT SELECTION GUIDE COLORANT CHROMATICS HIGH TEMPERATURE COMPOUNDS PROPERTY ISO Test Method Units PES PPSU PEI LCP PEEK PSU PHYSICAL Density 1183 — 1.37 1.29 1.27 1.40 1.30 1.24 Mold Shrinkage Flow/X-flow 294–4 % 0.8/0.85 0.7/XX 0.6/0.7 0/0.7 1.0/1.3 0.7 MECHANICAL Tensile Strength 527 Mpa 85 70 85 200 100 70 Tensile Elongation Yield 527 % 7 7.5 6 — — 6 Tensile Elongation Break 527 % >25 >60 60 3 30 >50 Izod Notched 180 kJ/m2 7 55 5 95 7 5.5 THERMAL HDT 1.8 MPa 75 °C 205 200 190 190 150 175 FLAMMABILITY Flame Rating UL-94 — V-0 V-0 V-0 V-0 V-0 HB ADDITIONAL Steam Sterilizable — Cycles 100 2000 2000 1500 1000 100 CUSTOM OPTIONS Color — — Yes Yes Yes Yes Yes Yes Reinforced — — Yes Yes Yes Yes Yes Yes Conductive — — Yes Yes Yes Yes Yes Yes Lubricated — — Yes Yes Yes No Yes Yes Radiopaque — — Yes Yes Yes No Yes Yes Trade Names — — Veradel Ultrason E Radel Ultrason P Ultem Vectra Zenite Xydar KetaSpire Victrex Vestakeep Udel Ultrason S Avient high temperature precolored and specialty compounds are your solutions for high performance products. With more than 3,000 unique color shades, including translucent or opaque effects, we will make your application look unmistakable. KEY FEATURES • High temperature resistance • Biocompatible • Brilliant colors • Multi sterilizable • Hydrolytic stability • Chemical resistance • Flame resistance • High mechanical performance • Food contact compliant APPLICATIONS • FDA medical & dental devices • Sterilization trays • Aircraft interiors • Automotive lighting • Chemical handling • Sensors and pumps • Plumbing fittings & manifolds • Food service trays • Gears & bushings • Membranes • Connectors For more information, email info.colorant.chromatics@avient.com or call +1.860.626.3029 1.844.4AVIENT www.avient.com Copyright © 2021, Avient Corporation.

These innovations include Avient’s PCR Color Prediction Service, ColorForward™ 2025, and new grades of polymer additives for flexible film. ColorForward™ 2025: the 19th edition of Avient’s color trend forecast developed to inspire brand owners and designers of plastic products, featuring 20 colors and effects derived from societal trends likely to influence consumer color preferences and the design of consumer products in the future PCR Color Prediction Service: a digital tool that can illustrate the color possibilities or limitations of certain types of recycled resins (PCR) prior to laboratory trials, which can help simplify the overall color decision-making process during product development and launch

Color Cosmetics Polymer Colorants Polymer Additives

– PolyOne Colorant Chromatics just launched a new chemical foaming solution for fluoropolymer wire insulation that can reduce part density while enhancing the stability and efficiency of the manufacturing process. These new chemical foaming solutions for fluoropolymer wire insulation are suitable for FEP, PFA and MFA polymers and are now available globally. PolyOne Corporation, with 2013 revenues of $3.8 billion, is a premier provider of specialized polymer materials, services and solutions.

PACKAGING SOLUTIONS Film & Sheet SELECTION GUIDE Anti-block BOPET application (PV back sheet, packaging film, industry film) Sleeve application (PETG) Anti-static Migrating anti-static system Flame retardant Halogen free flame retardant system, transparent, UL94 VTM-0 Light stabilizer Protection for outdoor application (UV 380nm) Protection for screen application (UV 400nm) Matting agent Matting agent Pinning agent Increased conductivity O2 scavenger Content protection against oxygen White masterbatch Blue shade white Standard white Black masterbatch Carbon black Cool black system BOPET STANDARD PRODUCT PORTFOLIO Anti-block Standard anti-block Printable A/B/A PET sheet and film High-transparent and low COF Anti-static A/B/A film or sheet (transparency) A/B/A film or sheet (matte) Impact modifier Improve sheet elongation at low temperature Chain extender IV improver, EU food and FDA approved White masterbatch Standard white Matting agent Surface matting agent APET SHEET PRODUCT PORTFOLIO Slip agent Mainly used for multilayer PE/PP film and composite film Anti-block Pure anti-block can be used in transparent film Contain both anti-block and slip agent for polyolefin film Processing masterbatch Used in blowing and tape casting of PE/PP (liquid) Anti-oxidant Protection of film from degrading while processing Increase reclaimed ingredients in the formula Light stabilizer Protection of content Low precipitation, which is especially suitable for thinner PE products, such as film and spinning Anti-fog Good resistance to cold and hot fog, and suitable for thinner film Anti-static Applicable to multilayer PE/PP film and composite film PO SHEET PRODUCT PORTFOLIO www.avient.com Copyright © 2021, Avient Corporation. By providing performance enhancements such as anti-block, anti-fog and anti-oxidant, Avient is ready to help customers improve processability and quality of packaging film and sheet. KEY CHARACTERISTICS • Wide range of base resins are used for functional additives including BOPET, APET, PE, PP and PA. • Available for different processings, such as film blowing, tape casting, biaxial stretching and sheet extrusion • Suitable for different industries such as food, beverages, consumer goods and industrial • Addition rate depends on the specific requirements and application • Can be customized to meet customer requirements for colors BRANDS • CESA™ • ColorMatrix™ • HIFORMER™ • OnCap™ • RENOL™ To learn more, please visit avient.com or call +86 21 28981188