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The following table compares cumulative total shareholder return (“TSR”) on our common shares against the cumulative total return of the S&P 500 Index and the S&P Mid Cap Chemicals Index over one-, three- and five-year periods ending December 31, 2017, assuming in each case a fixed investment of $100 and reinvestment of all dividends. Over a three-year time period, our TSR performance was less than the S&P 500 Index and the S&P Mid Cap Chemicals Index, primarily due to weaker performance from our DSS segment, which we subsequently divested in July 2017. These investments ultimately paid off, as 1-year TSR performance for 2017 exceeded that of the S&P indices and our peers.

P ri nt o r ty e. Enter the tax classification (C=C corporation, S=S corporation, P=Partnership) ▶ Note: Check the appropriate box in the line above for the tax classification of the single-member owner. P= Partnership; C= C corporation; or S= S corporation) • Partnership Partnership • Trust/estate Trust/estate Line 4, Exemptions If you are exempt from backup withholding and/or FATCA reporting, enter in the appropriate space on line 4 any code(s) that may apply to you.

Over the last three years, PolyOne has outperformed each company in the S&P Mid Cap Chemicals index, in terms of cumulative total return to shareholders. PolyOne Stock Performance The following is a graph that compares the cumulative total shareholder returns for PolyOne’s common shares, the S&P 500 index and the S&P Mid Cap Chemicals index, with dividends assumed to be reinvested when received. The S&P Mid Cap Chemicals index includes a broad range of chemical manufacturers.

P: Tengo que viajar por asuntos de negocios. P: Uno de nuestros clientes nos ha sido fiel mientras resolvíamos una serie de problemas. P: Trabajo en el Departamento de Compras.

Following are top reasons why many manufacturers and designers choose high-performance thermoplastics: • High-temperature resistance • Chemical resistance • Flame/smoke/toxicity (FST) performance • Chemically inert PLUS, ALL THE BENEFITS OF PLASTIC In addition to their elite-level properties, high-performance thermoplastics deliver the typical advantages of polymers over other material types such as metal, glass and ceramic, including: • Light weight • Design freedom/part consolidation • Easy colorability • Efficient, high-volume processing • Elimination of secondary operations • Enhanced product experience for the end user - quieter environment - improved tactile feel - better usability ADVANTAGES Going Above and Beyond • Amorphous structure • High marks for toughness, chemical resistance, hydrolytic stability, resistance to boiling water, and extreme thermal capabilities • Best for: aerospace interiors, hot water fittings, and medical and dental devices that are subjected to repeated steam sterilization • Also used in food equipment exposed to temperature extremes, such as coffeemakers or freezer-to-microwave cookware Polyaryletherketones Polysulfones Liquid crystal polymers Polyetherimides Polyphenylene sulfides There are five major families of high-performance thermoplastics AR YL ET H KE TO N ES SU LF O N ES• Semi-crystalline structure • High marks for thermal stability, chemical resistance and mechanical properties over a wide temperature range • Better-than-average levels of combustion resistance and electrical performance • Some PAEK materials, like polyetheretherketone (PEEK), are also extremely tough and have excellent impact strength • Best for: aerospace, automotive, industrial and medical components • May be used to create stock shapes such as rods, bars, and tubes All in the Family PH EN YL EN E SU LF ES • Semi-crystalline structure • Excellent temperature resistance with continuous service temperatures up to 230°C • High marks for modulus and resistance to creep, corrosion, and chemicals • Above-average electrical properties • Best for: complex parts with extremely tight tolerances; often used as an alternative to metals and thermosets in automotive underhood parts, appliances, electronics, and industrial applications Polyaryletherketones Polysulfones Liquid crystal polymers Polyetherimides Polyphenylene sulfides There are five major families of high-performance thermoplastics ET H IM ES LI Q U C RY ST AL P O M S • Semi-crystalline structure • High degree of anisotropy: strength, stiffness and thermal expansion will be greater in one direction vs. the other • High marks for temperature, chemical and electrical resistance • Exceptional mechanical strength and high flow rates; often used to fill extremely long parts with thin walls • Best for: electronic connectors, sensors, bullet-resistant vests, jet engine enclosures, brake and transmission friction parts, and gaskets • Amorphous structure • High marks for thermal, mechanical, and chemical properties • Often selected for demanding applications requiring ultra-high mechanical strength combined with high temperature, corrosion and wear resistance • Impact resistance may be lower than that of PSUs and PAEKs • Best for: aerospace interiors, automotive lighting, medical devices, and electrical and fiber optic connectors All in the Family Source: https://www.craftechind.com/standard-and-custom-parts-in-high-performance-plastics/ TEMPERATURE AND MATERIAL TYPE The two broad classifications of high-performance thermoplastics—amorphous and semi-crystalline— have different temperature characteristics.

https://www.avient.com/investors https://edge.media-server.com/mmc/p/xkwywv44 https://www.avient.com/investors https://register.vevent.com/register/BI3163094c31c24a9680e9118cec4f9167 https://www.avient.com/investors/events-presentations https://www.avient.com/news 4 About Avient 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.

This will result in stronger parts due to the locked in FIGURE 43 - Non-Newtonian Fluid Flow Low Level of Orientation Frozen Layer Highly Oriented Laminates Gate Transducer A Transducer B Hydraulic x 10 Filling Hold Start of mold shrinkage Time Pack P ss A B FIGURE 45 - Non-Newtonian fluid flow Relative Viscosity = Transfer Position * Fill Time Shear Rate = 1 Fill time FIGURE 46 - Pressure vs. Beaumont, John P. Beaumont, John P., R.

FX +4.6% FX -1.5% Total Avient +3.1% Note: Regional Sales Percentages exclude impact of foreign exchange Q2 2024 SEGMENT PERFORMANCE (COLOR, ADDITIVES & INKS) $525 $542 $94 $108 19.9% (in millions) (in millions) 7 17.9% +200 bps * Adjusted EBITDA Margin % • Organic sales growth in all regions led by Americas • Raw material deflation combined with cost reduction actions drove EBITDA margin expansion + 3% (+5% excluding FX) + 15% (+17% excluding FX) Q2 2024 SEGMENT PERFORMANCE (SPECIALTY ENGINEERED MATERIALS) $301 $308 $60 $64 20.6% (in millions) (in millions) 8 19.8% +80 bps * Adjusted EBITDA Margin % • Sales growth in consumer, healthcare and building & construction end markets offset by weaker demand in telecommunications • EBITDA margin expansion driven by positive end market mix as well as raw material deflation + 2% (+4% excluding FX) + 7% (+8% excluding FX) 2024 G U IDA N CE FY 2024 GUIDANCE Previous (May 7) Current Adjusted EBITDA $510 to $535 million $515 to $540 million Adjusted EPS $2.50 to $2.65 $2.55 to $2.70 Interest Expense $105 million $105 million Adjusted Effective Tax Rate 23% to 25% 23% to 25% Capital Expenditures ~$140 million ~$140 million 10 Q3 2024: Adjusted EPS of $0.62 11 Highlights • Provides performance updates on 2030 Sustainability Goals • Reduced company’s Scope 1 & 2 GHG emissions by 48% since 2019 • Highlights ESG performance ratings, certifications, and awards, including recent upgrades by Ecovadis to Gold and CDP to A- • Reflects Great Place to Work® culture focused on health, safety and employee engagement 2023 SUSTAINABILITY REPORT 11 Sustainability for a Better Tomorrow 2023 SUSTAINABILITY REPORT 12 • Investor Day to be held December 4, 2024 in New York, NY • The focus will be to do a deep dive on the Company’s strategy • Further details to be communicated 2024 AVIENT INVESTOR DAY AP P EN D IX 15 Performance Additives 15% Pigments TiO2 Dyestuffs Polyethylene 10%Nylon Polypropylene Styrenic Block Copolymer Other Raw Materials 38% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials RAW MATERIAL BASKET SEGMENT DATA U.S. & Canada 41% 36% 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS 19% 23%Industrial Building and 7% END MARKET REVENUE $2,007M $358M $1,138M $224M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $502M$3,143M (1) 7% 17 (1) Total company sales and adjusted EBITDA of $3,143M and $502M, respectively, include intercompany sales eliminations and corporate costs 2023 REVENUE | $2 .0 B ILL ION 34% 37% 21% END MARKET REGION 18 34% 21% 15% Building & 1% Energy COLOR, ADDITIVES & INKS 2023 REVENUE | $1 .1 B ILL ION 52% 35% 19 6%Industrial 12% 10% Defense Building & END MARKET REGION SPECIALTY ENGINEERED MATERIALS 32% 26% Building & 6% 2% Defense 1% (18% of sales) 2023 AVIENT REGIONAL SALES 25% Building & (36% of sales)Transportation 22% Building & 12% 6% US & Canada (41% of sales) 59% 22% Building & LATAM (5% of sales) 20 BY END MARKET 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.

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