V I S I O N PolyOne Corporation 4 To be the world’s premier provider of specialized polymer materials, services and solutions C O R E V A L U E S P E R S O N A L V A L U E S Honesty IntegrityRespect Operational Excellence Commercial Excellence Specialization Globalization Collaboration ExcellenceInnovation To be the world’s premier provider of specialized polymer materials, services and solutions S A F E T Y F I R S T PolyOne Corporation 5 Injuries per 100 Workers Spartech Acquisition 1.3 1.1 1.1 0.85 0.65 0.57 0.54 0.97 0.84 0.74 0.74 0.69 0.51 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 YTD PolyOne Corporation 6 P O L Y O N E 2 0 1 7 R E V E N U E | $ 3 . 2 B I L L I O N 9% United States 59% 14% 10% Latin America 9% Canada PolyOne Distribution 34% Performance Products & Solutions 21% Specialty Engineered Materials 19% Color Additives & Inks 26% Segment End Market Geography Building & Construction Electrical & Electronics 2009 2010 2011 2012 2013 2014 2015 2016* 2017* P R O O F O F P E R F O R M A N C E C O N S E C U T I V E Y E A R S PolyOne Corporation 7 8 $0.13 $0.68 $0.82 $1.00 $1.31 $1.80 $1.96 $2.06 $2.21 *Pro Forma for sale of DSS “Where we were” “Where we are” ROIC** 5.0% 14.0% Operating Income % of Sales Color, Additives & Inks 1.7% 15.5% Specialty Engineered Materials 1.1% 12.1% Performance Products & Solutions 4.3% 10.7% Distribution 2.6% 6.3% **ROIC is defined as TTM adjusted OI after tax divided by the sum of average debt and equity less cash over a 5 quarter period A D J U S T E D E P S E X P A N S I O N S U S T A I N A B L E P A T H T O D O U B L E - D I G I T E P S G R O W T H PolyOne Corporation 8 P E O P L E P R O D U C T S P L A N E T P E R F O R M A N C E Double digit annual EPS growth Expand specialty portfolio with strategic acquisitions Innovate and develop new technologies and services Repurchase 600K-1M shares annually Increase commercial resources 6-8% annually Double acquired company margins Enhance efficiencies through Lean Six Sigma and commercial excellence 531 711130 158 504 656 2014 Q3 2018 R&D / Technical Marketing Sales PolyOne Corporation 9 Increased commercial headcount + 34% + 22% + 30% Generating opportunities 35% more sales calls 25% more marketing campaigns 1,000 new customers, expanding customer base by 5% $1.0B increase in new opportunities Enhancing efficiency 8% reduction of average territory size, enabling greater customer focus 20% more prospecting calls I N V E S T M E N T I N COMMERCIAL RESOURCES D R I V I N G G R O W T H Lead Specialists T H E E V O L V I N G C U S T O M E R R E L A T I O N S H I P PolyOne Corporation 10 Expanded Path Traditional Path Strategic Accounts/ Field Sales Business Development Customer Service Web and Social Media Inside Sales PolyOne Corporation 11 Investments in digital and dedicated inside sales to improve customer experience 80% increase in leads (from 6,000 to 11,000) driven by website, phone, and online chat EXPANDED PATH A D D I N G C U S T O M E R T O U C H P O I N T S 4 21 Inside sellers $11M $88M Inside sales/digital revenue N E W R E S O U R C E S F U E L I N G T H E F U T U R E PolyOne Corporation 12 P O L Y O N E S A L E S F U N N E L +34% $3.0 billion 2017 $4.0 billion A L I G N I N G W I T H T R E N D S F O R G R O W T H T R A N S P O R T A T I O N P A C K A G I N G H E A L T H C A R E C O N S U M E R PolyOne Corporation 13 Facilitate alternative energy solutions Light- weighting Reduce packaging materials Improve recyclability Reduce spread of infection I N N O V A T I O N PolyOne Corporation 14 Customization 55% M&A 30% Innovation Pipeline Innovation comes from Research & Development Spend ($ millions) Vitality Index % of sales from products launched last 5 years 38% $20 $52 Transformational Opportunity for Growth Through M&A Adjacent Opportunity for Growth Through New Product Pipeline Core Customization 3 H O R I Z O N S O F D E V E L O P M E N T PolyOne Corporation 15 Incremental development from existing base of technology New development adjacent to current New technology development outside of and with our current base Service adjacent markets and Create new markets, target new customer needs Service existing markets and Market Technical I N N O V A T I O N Non-Halogen Flame Retardants Barrier Technologies Fiber Colorants Advanced Composites Thermoplastic Elastomers Gordon Composites/ Polystrand – Composites GLS – Thermoplastic Elastomers ColorMatrix – Liquid Color & Additives I N N O V A T I O N P I P E L I N E PolyOne Corporation 16 PrototypeFrame Opportunity Scale-up & Test Market Build Business Case Commercial Launch (since 2015) Phase 1 Phase 2 Phase 3 Phase 4 Phase 5 8 6 2 1 15 4 10 11 4 7 Breakthrough Platform Derivative Number of Projects 26 16 20 15 2 79 Total Addressable Market ($ millions) - - $1,230 $1,170 $440 $2,840 F L A M E R E T A R D A N T P O L Y M E R S A D V A N C E D C O M P O S I T E S B A R R I E R M A T E R I A L S C O L O R A N T T E C H N O L O G I E S T H E R M O P L A S T I C E L A S T O M E R S I N N O V A T I O N S P O T L I G H T : C O M P O S I T E S PolyOne Corporation 17 C O M P O S I T E S R E F R E S H E R PolyOne Corporation 18 Polymer Composite Strength Design Flexibility Continuous Fiber Thermoset Short Glass Fiber Thermoplastics Continuous Fiber Long Glass Fiber Thermoplastics S T R A T E G I C I N V E S T M E N T H I S T O R Y Acquired Polystrand Installed LFT production Avon Lake Acquired Gordon Thermoplastic Composites Long Fiber Reinforced Thermoplastics Continuous Fiber Thermosets Long Fiber Thermoplastic (LFT) Technology Installed LFT production Barbastro, Spain Acquired Glasforms Long Fiber Reinforced Thermoplastics Continuous Fiber Thermosets 2012 2015 20162009 2011 Acquired PlastiComp, specialty LFT producer PolyOne Corporation 19 C O M P O S I T E S I N T R A N S P O R T A T I O N PolyOne Corporation 20 W A T E R C R A F TR A I L H E A V Y T R U C K Bulkheads and Transoms Ceilings and Hatches Doors and Cabinetry Flooring Door Panels Side Walls Flooring & Side Panels Aerodynamic Fairings Seat and Bunk Reinforcements PolyOne Corporation 21 Safety Technology Geography Service FinancialPeople Low EH&S risk profile New and complementary technologies Leverage our global footprint Strong customer relationships Foundational operating margins of 8-10% with ability to double Motivated team with a specialty culture I N V E S T - T O - G R O W M & A S T R A T E G Y PolyOne Corporation 22 Capture sourcing synergies Cross-sell & blend 8-10% operating margins I N V E S T - T O - G R O W M & A P L A Y B O O K Protect Retain employees Implement LSS to drive efficiency improvements Innovate with combined portfolio Safety First!

Cable jacket/sheath– Made of PE 9 Fiber-Line Product PolyOne Materials F I B E R O P T I C A L G R O W T H D R I V E R S PolyOne Corporation 20 5G Networks  Enable lower latency, greater flexibility & efficiency  Installation of these networks are in the very early stages  Installation will start in urban hubs and will continue to expand into suburban and rural areas  By 2025, only 14% of the world will have 5G connections  Growth is expected over multi- year period 5G technology will be a leading growth driver in fiber optic cable for several years 10x Speed Increase & 8x More Antennae Required 5G vs. 4G PolyOne Corporation 21 Safety Technology Geography Service FinancialPeople Low EH&S risk profile New and complementary technologies Leverage our global footprint Strong customer relationships Foundational operating margins of 8-10% with ability to double Motivated team with a specialty culture I N V E S T - T O - G R O W M & A S T R A T E G Y PolyOne Corporation 22 Capture sourcing synergies Cross-sell & blend 8-10% operating margins I N V E S T - T O - G R O W M & A P L A Y B O O K Protect Retain employees Implement LSS to drive efficiency improvements Innovate with combined portfolio Safety First!

Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: our ability to realize anticipated savings and operational benefits from the realignment of assets, including the planned closure of certain manufacturing facilities; the timing of closings and shifts of production to new facilities related to asset realignments and any unforeseen disruptions of service or quality caused by such closings and/or production shifts; separation and severance amounts that differ from original estimates, amounts for non-cash charges related to asset write-offs and accelerated depreciation realignments of property, plant and equipment, that differ from original estimates; our ability to identify and evaluate acquisition targets and consummate acquisitions; the ability to successfully integrate acquired companies into our operations, retain the management teams of acquired companies and retain relationships with customers of acquired companies including without limitations Spartech Corporation; disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; the financial condition of our customers, including the ability of customers (especially those that may be highly leveraged and those with inadequate liquidity) to maintain their credit availability; the speed and extent of an economic recovery, including the recovery of the housing market; our ability to achieve new business gains; the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; changes in polymer consumption growth rates where we conduct business; changes in global industry capacity or in the rate at which anticipated changes in industry capacity come online; fluctuations in raw material prices, quality and supply and in energy prices and supply; production outages or material costs associated with scheduled or unscheduled maintenance programs; unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; an inability to achieve or delays in achieving or achievement of less than the anticipated financial benefit from initiatives related to working capital reductions, cost reductions and employee productivity goals; an inability to raise or sustain prices for products or services; an inability to maintain appropriate relations with unions and employees; our ability to continue to pay cash dividends; the amount and timing of repurchases of our common shares, if any; and other factors affecting our business beyond our control, including, without limitation, changes in the general economy, changes in interest rates and changes in the rate of inflation. See Attachment 3 for a definition of special items.

Learn how you can make the switch.

Sync design with manufacturability: Learn how Avient Design Labs can help with your next project

Learn how molded-in color can offer the same eye-popping effects of paint at a greater efficiency and lower cost

Üzleti nyilvántartásnak minősül például: • új termékek fejlesztése • teszteredmények; • laboratóriumi jelentések • kutatási adatok • pénzügyi jelentések • költségjelentések • számlák • munkaidő-nyilvántartások • személyügyi nyilvántartások • üzleti tervek • Munkatársak számára szánt levelek, hírlevelek, emlékeztetők és e-mailek • A The Loop intranetes oldalon közzétett információk Tulajdonosi és bizalmas információnak minősül, például: • üzleti tervek és irányadó stratégiák • kutatási és műszaki adatok • termék-előállítási receptek és eljárási technológiák • termékgondozás • kereskedelmi titkok, technológiák és know-how-k • a versenypozíciónkkal kapcsolatos információk • közzé nem tett pénzügyi információk és tervezetek • a termék előállításának költségeire vonatkozó információk • a javasolt szerződéskötésekkel és tranzakciókkal kapcsolatos információk • ügyfelekkel, beszállítókkal, árazással kapcsolatos és egyéb kereskedelmi információk • a kifejezetten a Vállalat számára fejlesztett szoftverek és rendszerek • minden olyan információ, ami versenytársaink számára hasznos lehet 14 K.: A feletessem szabadságon van, és a távollétében arra kértek, hogy írjak alá egy szerződést a Vállalat nevében. A szellemi tulajdonhoz fűződő jogokat, ideértve a szabadalmakat, védjegyeket, szerzői jogokat, kereskedelmi titkokat és know-how-kat, a többi értékes vagyontárgynál alkalmazott gonddal kell megtervezni és kezelni.

Üzleti nyilvántartásnak minősül például: • új termékek fejlesztése • teszteredmények; • laboratóriumi jelentések • kutatási adatok • pénzügyi jelentések • költségjelentések • számlák • munkaidő-nyilvántartások • személyzeti nyilvántartások • üzleti tervek • a munkatársak számára szánt levelek, hírlevelek, emlékeztetők és e-mailek • a The Loop intranetes oldalon közzétett információk Tulajdonosi és bizalmas információnak minősül, például: • üzleti tervek és irányadó stratégiák • kutatási és műszaki adatok • termék-előállítási receptúrák és eljárási technológiák • termékgondozás • kereskedelmi titkok, technológiák és know-how-k • a versenypozíciónkkal kapcsolatos információk • nyilvánosan közzé nem tett pénzügyi információk és tervezetek • a termék előállításának költségeire vonatkozó információk • a javasolt szerződéskötésekkel és tranzakciókkal kapcsolatos információk • ügyfelekkel, beszállítókkal, árazással kapcsolatos és egyéb kereskedelmi információk • a kifejezetten a Vállalat számára fejlesztett szoftverek és rendszerek • minden olyan információ, ami versenytársaink számára hasznos lehet MAGATARTÁSI KÓDEXÜNK | 13 MAGATARTÁSI A TISZTELET BECSÜLETESSÉG A ÜZLETI TÁRSADALMI K.: A felettesem szabadságon van, és a távollétében arra kértek, hogy írjak alá egy szerződést a Vállalat nevében. A szellemi tulajdonhoz fűződő jogokat, ideértve a szabadalmakat, védjegyeket, szerzői jogokat, kereskedelmi titkokat és know-how-kat, a többi értékes vagyontárgynál alkalmazott gonddal kell megtervezni és kezelni.

Should the Goods delivered by Supplier hereunder become, or in Avient’s reasonable opinion be likely to become, the subject of a claim of infringement of any patent, trademark, copyright, or other intellectual property right, then Supplier shall, at Avient's option: (i) procure for Avient the right to use the goods free of any liability for infringement, (ii) replace such goods with non-infringing substitutes or modify such goods to be non-infringing, or (iii) refund Avient's purchase price and accept the return of such Goods. 16.3 If Supplier manufactures Goods and/or provides Services pursuant to instructions of Avient, and unless expressly otherwise accepted in writing between the parties, Supplier hereby Avient Terms and Conditions of Purchase for Goods and/or Services assigns to Avient, by way of present and future assignment, all intellectual property rights, know-how, copyrights and other items (inventions, drawings, feasibility studies, software (including source codes, sub-software and documentation), etc.) related to such Goods and/or Services developed by or on behalf of Supplier.

Special items for the quarter resulted in a net after-tax charge of $4.9 million, or $0.05 per share (see Attachment 3). Patterson added, “In many ways, the expansion of Spartech’s profitability is a replay of how we improved PolyOne in our transformation, only faster. See Attachment 3 for a definition of special items.