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RISK PERCEPTION RISK TOLERANCE DECISION OR ACTION 0.0 0.3 0.6 0.9 1.2 1.5 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 Injury Incidence Rate In ju ri e s p e r 10 0 W o rk e rs Spartech Acquisition 0.51 18 Sustainability Report | 2018 As an ACC Responsible Care® company, our “safety first” culture was built not through words, but through dedication, continuous improvement, and action. Scope 1 Scope 2 Greenhouse Gas Emissions Intensity Sustainability Report | 2018 63 Environmental Metrics/Charts 0.0 0.3 0.6 0.9 1.2 1.5 2016 2017 2018 (M W h / M T P ro d u ct io n ) Energy Intensity 0 60,000 120,000 180,000 240,000 300,000 2016 2017 2018 (M T S co p e 1 & 2 C O 2e ) GHG Emissions (MT CO2e) Energy IntensityEnergy Source Breakdown Purchased Electricity Purchased Steam Natural Gas Diesel Fuel 43.85% 14.55% .28% 41.31% 41 Energy Saving Projects Eliminated 4600+ MT of Carbon Dioxide Per Year Emissions Reductions (M T S co p e 1 & 2 C O 2 / M T P ro d u ce d ) 1.00 .80 .60 .40 .20 0 .43 .37 .37 64 Sustainability Report | 2018 Lean Six Sigma Impact Efficiency and continuous improvement are at the core of our Operational Excellence strategy and also ensure we’re taking responsible care of our planet. Pune, India 1 2 3 4 5 6 72 Sustainability Report | 201872 Sustainability Report | 2018 Sustainability Report | 2018 73 Performance Overview The fourth “P” of our sustainability cornerstones is Performance.

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The webcast can be viewed live at avient.com/investors, or by clicking here: https://edge.media-server.com/mmc/p/eaivs28r.

The webcast can be viewed live at avient.com/investors, or by clicking here: https://edge.media-server.com/mmc/p/p4owuchb.

The webcast can be viewed live at avient.com/investors, or by clicking here: https://edge.media-server.com/mmc/p/yrq7mgm9.To participate in the audio-only portion of the call, dial 1-844-835-7433 (domestic) or 1-914-495-8589 (international) and provide conference ID number 7899765. 

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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.

To access Avient’s news library online, please visit www.avient.com/news. 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.

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 PO LY AR YL ET H ER KE TO N ES PO LY 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 PO LY PH EN YL EN E SU LF ID 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 PO LY ET H ER IM ID ES LI Q U ID C RY ST AL P O LY M ER 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.