F L E X IB L E PA C K AG I N G M A N U FAC T U R E R F L E X I B L E P O U L T R Y P A C K A G I N G • Provide low friction resistance for multilayer film structures with external polyamides • Prevent self-adhesion of plastic films • Enhance the end-use appearance • Provided additives that result in a lower coefficient of friction for packaging end products • Enhanced the appearance of packaging surfaces by creating a smoother finish • Offered expertise in additives for polyamides in flexible packaging and assistance in achieving regulatory approval Cesa Anti-Block Additives and Cesa Slip Additives KEY REQUIREMENTS WHY AVIENT? https://www.avient.com/products/polymer-additives/surface-modifier-additives/cesa-anti-block-additives Slide 1: Flexible packaging manufacturer

Factors that could cause actual results to differ materially from those implied by these forward looking statements include but are not limited to:• 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 achieve the strategic and other objectives relating to the Spartech acquisition, including any expected synergies; our ability to successfully  integrate Spartech and achieve the expected results of the acquisition, including, without limitation, the acquisition being accretive;  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;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 amount and timing of repurchases, if any, of PolyOne common shares and our ability to pay regular quarterly cash dividends and the amounts and  timing of any future dividends;  The effect on foreign operations of currency fluctuations, tariffs, and other political, economic and regulatory risks;  Changes in polymer consumption growth rates in the markets where we conduct business;g p y p g ;  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, employee productivity goals, and an inability to raise or sustain prices for products or services;, , p y p y g , y p p ;  An inability to maintain appropriate relations with unions and employees; 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. • The above list of factors is not exhaustive. • We undertake no obligation to publicly update forward‐looking statements, whether as a result of new information, future events or otherwise.   Platform operating income mix percentage 2005Y 2006Y 2007Y 2008Y 2009Y 2010Y 2011Y Global Specialty Engineered Materials $ 0.4 $ 3.9 $ 4.9 $ 17.6 $ 20.6 $ 49.7 $ 45.9 Global Color, Additives and Inks 4.3 8.9 25.7 28.1 25.2 37.7 43.4 Specialty Platform $ 4.7 $ 12.8 $ 30.6 $ 45.7 $ 45.8 $ 87.4 $ 89.3 Performance Products and Solutions 75.7 64.2 65.8 31.3 33.1 54.0 62.4 Distribution 19.5 19.2 22.1 28.1 24.8 42.0 56.0 SunBelt Joint Venture 91.9 102.9 34.8 28.6 25.5 18.9 5.0 Corporate (51.5) 34.5 (73.3) (425.1) 7.9 (27.7) 20.3 Operating income (loss) GAAP $ 140.3 $ 233.6 $ 80.0 $ (291.4) $ 137.1 $ 174.6 $ 233.0 Less: Corporate operating expense (income) 51.5 (34.5) 73.3 425.1 (7.9) 27.7 (20.3) Operating income excluding Corporate $ 191.8 $ 199.1 $ 153.3 $ 133.7 $ 129.2 $ 202.3 $ 212.7 Specialty platform operating mix percentage 2% 6% 20% 34% 35% 43% 42% Platform operating income mix percentage 2012Y Global Specialty Engineered Materials $ 47.0 Global Color, Additives and Inks 66.8 Specialty Platform $ 113.8 Performance Products and Solutions 74.9 Distribution 66.0 Corporate (87.6) Operating income GAAP $ 167.1 Less: Corporate operating expense 87.6 Operating income excluding Corporate $ 254.7 Specialty platform operating mix percentage 45% Platform sales and operating income (OI) 2006Y 2007Y 2008Y 2009Y 2010Y 2011Y Global Specialty Engineered Materials Sales $ 345.3 $ 384.4 $ 514.0 $ 402.9 $ 517.4 $ 575.1 Global Color, Additives and Inks Sales 531.8 560.5 554.3 459.8 527.4 544.6 Specialty Platform Sales $ 877.1 $ 944.9 $ 1,068.3 $ 862.7 $ 1,044.8 $ 1,119.7 Performance Products and Solutions Sales 1,166.2 1,086.8 1,001.4 667.7 776.3 865.4 PolyOne Distribution Sales 732.8 744.3 796.7 625.1 911.9 996.5 Corporate and Eliminations (153.7) (133.3) (127.7) (94.8) (111.1) (118.1) Total Sales $ 2,622.4 $ 2,642.7 $ 2,738.7 $ 2,060.7 $ 2,621.9 $ 2,863.5 Global Specialty Engineered Materials OI $ 3.9 $ 4.9 $ 17.6 $ 20.6 $ 49.7 $ 45.9 Global Color, Additives and Inks OI 8.9 25.7 28.1 25.2 37.7 43.4 Specialty Platform OI $ 12.8 $ 30.6 $ 45.7 $ 45.8 $ 87.4 $ 89.3 Performance Products and Solutions OI 64.2 65.8 31.3 33.1 54.0 62.4 PolyOne Distribution OI 19.2 22.1 28.1 24.8 42.0 56.0 Sunbelt Joint Venture OI 102.9 34.8 28.6 25.5 18.9 5.0 Corporate and eliminations (4.6) (25.5) (28.9) (40.8) (32.5) (26.4) Special items in OI 39.1 (47.8) (396.2) 48.7 4.8 46.7 Operating income (loss) GAAP $ 233.6 $ 80.0 $ (291.4) $ 137.1 $ 174.6 $ 233.0 Sunbelt equity income (107.0) (40.8) (32.5) (29.7) (23.1) (5.7) Special items in OI (39.1) 47.8 396.2 (48.7) (4.8) (46.7) Operating income adjusted $ 87.5 $ 87.0 $ 72.3 $ 58.7 $ 146.7 $ 180.6 Global Specialty Engineered Materials - OI % of sales 1.1% 1.3% 3.4% 5.1% 9.6% 8.0% Global Color, Additives and Inks - OI % of sales 1.7% 4.6% 5.1% 5.5% 7.1% 8.0% Specialty platform OI - % of sales 1.5% 3.2% 4.3% 5.3% 8.4% 8.0% PP&S operating OI - % of sales 5.5% 6.1% 3.1% 5.0% 7.0% 7.2% Distribution OI - % of sales 2.6% 3.0% 3.5% 4.0% 4.6% 5.6% PolyOne OI adjusted - % of sales 3.3% 3.3% 2.6% 2.8% 5.6% 6.3% Platform sales and operating income (OI) 2012Y 2012PF Global Specialty Engineered Materials Sales $ 543.6 $ 779.5 Global Color, Additives and Inks Sales 703.5 753.8 Designed Structures & Solutions 847.4 Specialty Platform Sales $ 1,247.1 $ 2,380.7 Performance Products and Solutions Sales 837.0 902.8 PolyOne Distribution Sales 1,030.3 1,030.3 Corporate and Eliminations (121.8) (121.8) Total Sales $ 2,992.6 $ 4,192.0 Global Specialty Engineered Materials OI $ 47.0 Global Color, Additives and Inks OI 66.8 Specialty Platform OI $ 113.8 Performance Products and Solutions OI 74.9 PolyOne Distribution OI 66.0 Corporate and eliminations (33.7) Special items in OI (53.9) Operating income - GAAP $ 167.1 Special items in OI 53.9 Operating income adjusted $ 221.0 Global Specialty Engineered Materials - OI % of sales 8.6% Global Color, Additives and Inks - OI % of sales 9.5% Specialty platform OI % of sales 9.1% PP&S operating OI % of sales 9.0% Distribution OI % of sales 6.4% PolyOne OI adjusted, % of sales 7.4% Adjusted EPS 2006Y 2007Y 2008Y 2009Y 2010Y 2011Y 2012Y Net Income attributable to PolyOne common shareholders $ 130.9 $ 40.9 $ (417.0) $ 106.7 $ 162.6 $ 172.6 $ 71.9 SunBelt equity earnings, after tax (68.5) (26.1) (20.8) (19.0) (14.7) (3.7) - Special items, after tax (21.2) 41.4 310.0 (31.0) 15.8 (30.5) 35.7 Tax adjustments (30.0) (30.7) 147.2 (44.9) (88.3) (42.3) 0.5 Adjusted net income $ 11.2 $ 25.5 $ 19.4 $ 11.8 $ 75.4 $ 96.1 $ 108.1 Diluted shares 92.8 93.1 92.7 93.4 96.0 94.3 89.8 Adjusted EPS $ 0.12 $ 0.27 $ 0.21 $ 0.13 $ 0.79 $ 1.02 $ 1.20 Average Debt Q4 2011 Q1 2012 Q2 2012 Q3 2012 Q4 2012 Average PolyOne Debt $ 707.0 $ 706.4 $ 705.8 $ 705.2 $ 706.9 $ 706.3 Average Equity Q4 2011 Q1 2012 Q2 2012 Q3 2012 Q4 2012 Average PolyOne shareholders’ equity $ 588.3 $ 611.3 $ 604.3 $ 629.3 $ 629.1 $ 612.5 Adjusted EBITDA 2012 PolyOne Income before income taxes $ 113.0 PolyOne Interest expense, net 50.8 PolyOne Depreciation and amortization 69.8 PolyOne Special items in EBITDA 55.1 PolyOne Adjusted EBITDA $ 288.7 Pro forma Spartech EBITDA * 56.3 Pro forma EBITDA * $ 345.0 * Amount excludes expected synergies.

Competition is based on service, performance, product innovation, product recognition, speed, delivery, quality and price. We encounter competition in price, payment terms, delivery, service, performance, product innovation, product recognition and quality, depending on the product involved. President and Chief Executive Officer, Resco Products (a refractory products company) from 2012 to 2014.

We never use false or misleading statements to market our products. Avient makes fair and fact-based comparisons of product performance. We do not disparage competitors or their products or pricing.

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 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, retain relationships with customers of acquired companies, and achieve the expected results of such acquisitions, including whether such businesses will be accretive to our earnings; • 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; • 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 and laws and regulations regarding the disposal of plastic in jurisdictions 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; • Information systems failures and cyber attacks; • Our ability to continue to pay regular cash dividends and the amounts and timing of any future dividends; 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. 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 Specialization Commercial Excellence Operational Excellence Globalization Collaboration ExcellenceInnovation To be the world’s premier provider of specialized polymer materials, services and solutions PolyOne Corporation 5 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 Transportation 18% Industrial 16% Consumer 12% Packaging 11% Healthcare 11% Wire & Cable 9% Appliance 5% United States 59% Europe 14% Asia 10% Latin America 9% Canada 8% PolyOne Distribution 34% Performance Products & Solutions 21% Specialty Engineered Materials 19% Color Additives & Inks 26% Segment End Market Geography Building & Construction 12% Electrical & Electronics 6% 2009 2010 2011 2012 2013 2014 2015 2016* 2017* A D J U S T E D E P S E X P A N S I O N C O N S E C U T I V E Y E A R S PolyOne Corporation 6 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 E A R L Y Y E A R S D E F I N E D B Y S P E C I A L T Y M I X I M P R O V E M E N T PolyOne Corporation 7 2% 76% 2005 2017 $5M $280M + 25% + 33% Specialty OI % of Operating Income Consistently Deliver Double Digit Annual EPS Growth *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 PolyOne Corporation 8 2006 2017 2020 “Where we were” “Where we are” Platinum Vision ROIC* 5.0% 14.0% 15.0% Operating Income % of Sales Color, Additives & Inks 1.7% 15.5% 20%+ Specialty Engineered Materials 1.1% 12.5% 20%+ Performance Products & Solutions 5.5% 10.7% 12-14% Distribution 2.6% 6.3% 6.5-7.5% P R O O F O F P E R F O R M A N C E & P L A T I N U M V I S I O N 531 660130 149 504 607 2014 2017 R&D / Technical Marketing Sales I N V E S T M E N T I N C O M M E R C I A L R E S O U R C E S D R I V I N G G R O W T H PolyOne Corporation 9 Increased commercial headcount Largest organic revenue growth since recession $2.9 $2.9 $3.2 2015 2016 2017 Revenue in billions of $ + 24% + 15% + 20% Total + 10% Organic + 7% Free Cash Flow (In millions) ROIC* PolyOne Corporation 10 $50 $116 $143 $0 $40 $80 $120 $160 $200 2012 2014 2016 2018 10.8% 11.3% 12.9% 14.0% 10.0% 11.0% 12.0% 13.0% 14.0% 15.0% 2012 2014 2016 2017 2020 Platinum Vision $200 - $220 F R E E C A S H F L O W A N D I M P R O V I N G R E T U R N S *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 15.0% $767M R E T U R N I N G C A S H T O S H A R E H O L D E R S O V E R $ 9 5 0 M I L L I O N S I N C E 2 0 1 1 PolyOne Corporation 11 $0 $150 $300 $450 $600 $750 2011 2012 2013 2014 2015 2016 2017 $0.16 $0.20 $0.24 $0.32 $0.40 $0.48 $0.58 $0.70 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 3-Year Dividend Plan Cumulative Share Repurchases (In millions) Increasing Annual Dividend Transformational Opportunity for Growth Through M&A Adjacent Opportunity for Growth Through New Product Pipeline Core Customization 3 H O R I Z O N S O F D E V E L O P M E N T PolyOne Corporation 12 Incremental development from existing base of technology New development adjacent to current technology New technology development outside of and with our current base Service adjacent markets and customers Create new markets, target new customer needs Service existing markets and customers Market Technical I N N O V A T I O N Non-Halogen Flame Retardants Barrier Technologies Fiber Colorants Advanced Composites Thermoplastic Elastomers Gordon Composites/ Polystrand – Composites GLS – Thermoplastic Elastomers ColorMatrix – Liquid Color & Additives I N N O V A T I O N P I P E L I N E PolyOne Corporation 13 PrototypeFrame Opportunity Scale-up & Test Market Build Business Case Commercial Launch (since 2015) Phase 1 Phase 2 Phase 3 Phase 4 Phase 5 8 6 8 2 2 36 5 10 13 10 4 6 7 Breakthrough Platform Derivative Number of Projects 33 17 20 15 5 90 Total Addressable Market ($ millions) - - $800 $1,400 $600 $2,800 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 A U N I Q U E C U S T O M E R E X P E R I E N C E Industrial Design I Q D E S I G N L A B S PolyOne Corporation 14 Launched in 2014, IQ Design Labs is our in-house industrial design team that focuses on material selection and processing expertise to help with problem solving, enabling our clients to develop higher performance products. Segment highlights COLOR, ADDITIVES & INKS Color, Additives & Inks Specialty Engineered Materials Specialty Engineered Materials Performance Products & Solutions Performance Products & Solutions DISTRIBUTION Target end markets & �application examples Slide Number 26 Slide Number 27 Slide Number 28 Slide Number 29 Slide Number 30 Slide Number 31 Slide Number 32 Slide Number 33 Slide Number 34 Slide Number 35 Slide Number 36 Slide Number 37 Investor Presentation - March 2018 r4.pdf Investor Presentation - March 2018

R A I L C A R M A N U FAC T U R E R D O O R P A N E L • High stiffness-to-weight ratio and improved thermal insulation to incumbent materials • Efficient manufacturing process to ensure quality panel construction and standards • Domestic supply and manufacturing to ensure timely delivery • Reduced component complexity compared to metal • Custom-engineered panel with varying core materials and thicknesses to meet performance requirements • Reliable material supply with product manufactured in United States CRTM™ Composite Sandwich Panels KEY REQUIREMENTS WHY AVIENT AVIENT SOLUTION CORROSION & IMPACT RESISTANT LEARN MORE Copyright © 2024, Avient Corporation. https://www.avient.com/products/advanced-composites/continuous-fiber-composite-panels/crtm-panels

WIRE &CABLE COMPANY O P T I C A L C A B L E S H E A T H • Excellent resistance to fungi and mildew • Good UV resistance • Meet flame retardant standard IEC 60332-3C • Provided an anti-fungi solution with an ISO 846 rating of 0, showing no growth under microscope • Formulated solution to meet flammability performance demands for IEC60332-2 or GBT 18380.22-2008 compliance • Complied with Biocidal Product Regulation (EU) No528/2012 (BPR) ECCOH™ Thermoplastic Formulation KEY REQUIREMENTS WHY AVIENT? https://www.avient.com/products/engineered-polymer-formulations/eco-conscious-formulations/eccoh-cross-linkable-solutions

MAJOR TELECOM COMPANY L D S A N T E N N A A R R A Y • Required material suitable for Laser Direct Structuring (LDS) for a 3D antenna design that allowed Surface Mount Technology (SMT) for mass production in a short manufacturing time • 265°C /10 seconds • Provided high-heat material to enable miniaturization and multi-function integration for an innovative 3D design • Formulated LDS solution with low dielectric constant (Dk 3.98) and dissipation factor (Df 0.006) values Edgetek™ ET9600-8015 Formulation KEY REQUIREMENTS WHY AVIENT AVIENT SOLUTION DESIGN FREEDOM + SMT LEARN MORE Copyright © 2021, Avient Corporation. https://www.avient.com/products/engineered-polymer-formulations/general-engineered-formulations/edgetek-3d/lds-solutions

PHILIPS AVENT M I L K B O T T L E S E A L • FDA, EU & China fatty food contact regulations • Provided a tight seal at elevated temperatures for sterilization • Can cater to repeated refrigeration • Utilized material expertise to develop a product to meet fatty food contact regulations and offer safe sealing performance • Enabled mothers to convert their Philips AVENT bottles into breast milk storage containers Versaflex™ FFC2882-87 Thermoplastic Elastomer KEY REQUIREMENTS AVIENT SOLUTION REGULATORY COMPLIANCE LEARN MORE WHY AVIENT? https://www.avient.com/products/thermoplastic-elastomers/versaflex-thermoplastic-elastomers

PHONE CASE BRAND C L E A R P H O N E C A S E S • Optically clear • Non-yellowing • Good stain resistance • Bondable to PC • Formulated a custom solution to enhance stain resistance and tensile strength • Collaborated on application and technical services to help ensure end product maintained optical clarity when texture was added • Provided manufacturing support to reduce scrap • Coordinated across multiple regions for supply continuity and technical support to serve customer’s global needs Versaflex™ CE 3320-80 TPE KEY REQUIREMENTS WHY AVIENT? https://www.avient.com/products/thermoplastic-elastomers/versaflex-thermoplastic-elastomers