SPORTS BRAND S N O R K E L M O U T H P I E C E • Replace PVC with alternative materials such as TPE or silicone • Skin contact safety and UV resistance • Soft texture with a non-sticky feel • Translucent color to help children use it properly and safely • Customized a soft (Shore A) TPE solution that passed strict tests, including thermal deformation (80°C for 2 hours), UV resistance, and assembly resistance • Providing a 40% more cost-effective system than silicone due to the high production efficiencies of TPEs • Provided cross-regional cooperation and prompt response to help customers achieve fast commercialization in both Europe and China Versaflex Thermoplastic Elastomers UV RESISTANT + TRANSLUCENT Copyright © 2025, Avient Corporation.

Nutritional components in dairy products are photosensitive, making them susceptible to light degradation • Light protection in dairy packaging helps maintain product integrity and extend shelf life A LIGHT BLOCKING SOLUTION THAT PROVIDES: • Light blocking and whiteness in PET dairy packaging • Protection from 2 weeks up to 12 months shelf life • Compatibility with monolayer and multilayer PET preforms • Full compatibility with rPET • Food contact approved (region dependent) • Low TiO₂ levels to increase recyclability, aligning with the emergence of white recycle streams PASTEURIZED MILK Typical shelf life 5–10 days WHITE COLOR LACTRA ESL LACTRA SX or LACTRA 4 EXTENDED SHELF LIFE MILK Typical shelf life 2 weeks–3 months UHT MILK & PRODUCTS Typical shelf life 4–12 months Lightweighting/CO2 reduction Reduced LDR – material & cost savings Improved processing performance BENEFITS OF COLORMATRIX™ LACTRA™ Improved bottle performance Compatibility with rPET Helps to Protect Performance Energy efficiency Whiteness 85–92 L* 30% less life cycle emissions Increased machinery life cycle due to reduced wear & tear 80–100% light blocking performance © 2024, All Rights Reserved Avient Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012

 Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to:  The final amount of charges resulting from the planned North American asset realignment and the Company’s ability to realize anticipated savings and operational benefits from the asset realignment;  Our ability to achieve the strategic and other objectives relating to the acquisition of Spartech Corporation, 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;  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 in the markets 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, employee productivity goals, and an inability to raise or sustain prices for products or services;  An inability to raise or sustain prices for products or services;  An inability to maintain appropriate relations with unions and employees;  The inability to achieve expected results from our acquisition activities;  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.  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. Patterson President and Chief Executive Officer PolyOne Corporation Page 27 Well Positioned for Revenue Growth Addressable Market by Platform $540 $215 $120 $40 $260 $525 ($ millions) Design/Service Sustainable Solutions Surface Modification Lightweighting Thermal Control Flame Retardancy $1.0 - $2.0 Billion of revenue generated from new products in 5 years Gross margin on new products exceed current gross margin by at least 10 percentage points World class vitality index of ≥ 35% 2018 PolyOne Corporation Page 28 Megatrends Aligned with Key End Markets Decreasing Dependence on Fossil Fuels Protecting the Environment Improving Health and Wellness Megatrend End Markets Globalizing and Localizing Health & Wellness Transportation Packaging Consumer PolyOne Corporation Page 29 2006 2013 Revenue ($ millions) Health and Wellness Evolution General purpose tubing TPE applications from GLS Specialty tubing Ergonomic enhancements Pre-certified biocompatible colorants Highly sophisticated catheter and drug delivery components Chemical and heat sterilizable materials Authentication and protection technologies Addressing wellness, prevention, diagnostic and therapy changes in healthcare setting Healthcare packaging solutions 2006 2015 & Beyond $416 $105 PolyOne Corporation Page 30 Transportation Evolution General purpose formulations (bumpers, roof racks) Long fiber for lightweighting Thermal management for LED lighting Thermoset composite pultrusions Conductive polymers for EMI shielding Formulations for aerospace interiors Thermoplastic composites High temperature formulations for aerospace Expand 3D printing capabilities 2006 2015 & Beyond 2006 2013 Revenue ($ millions) $709 $315 PolyOne Corporation Page 31 Packaging Evolution Masterbatch colors and PVC packaging materials TPEs to enhance brand appeal and consumer functionality Liquid color and additive technologies to extend shelf life, preserve taste and differentiate brands Leveraging color, additives and sheet technology for healthcare and consumer packaging solutions 2006 2015 & Beyond 2006 2013 Revenue ($ millions) $612 $260 PolyOne Corporation Page 32 Consumer Evolution Commodity plastic and masterbatch color solutions Engineered materials to enhance customer appeal through visual and performance improvements Formulated metal- to-polymer conversion to enhance performance and reduce manufacturing costs Biopolymers & composite materials leveraging unique color technology to build brand identity 2006 2015 & Beyond 2006 2013 Revenue ($ millions) $394 $228 PolyOne Corporation Page 33 Interactive Display Introduction PolyOne Corporation Page 34 Interactive Displays INNOVATION DISCUSSION LEADER TECHNOLOGIES MARKETS Polycast™ Bullet Resistant Sheet Aerospace GlasArmor™ Ballistic Resistant Panels Security reFlex™ Bio-Based Plasticizer Solutions Wilflex™ Oasis Hydrate InVisiO℠ Color Inspiration Forecast In-Store Audits OnColor™ Portfolio Light Weighting Thermal Management Corrosion Resistance Design Flexibility Sustainability Global Supply Chain Ergonomics and Aesthetics Consumer Appeal 9) Consumer Electronics Solutions Walter Ripple General Manager GLS Personal Electronics Wearable Electronics Hand Held Devices Portable Audio 7) Metal Replacement Technology Kurt Schuering Vice President Global Key Account Management Aerospace Transportation Electrical & Electronics Sporting and Shooting 8) Medical Device Solutions Dr.  Strong past performance demonstrates that our strategy and execution are working  Megatrends and emerging opportunities align with our strengths  Innovation and services provide differentiation, incremental pricing power, and competitive advantage  Strong and proven management team driving growth and performance  Addressable market exceeds $40 billion PolyOne Corporation Page 44 Appendix Kiosk Summaries Segments at a Glance Officer Biographies PolyOne Corporation Page 45 Anti-Counterfeiting Solutions  Includes formulation and consultative services to assist manufacturers and brand owners in positively identifying their packaging, devices, end products and raw materials in the field  Protects brand equity – defense against customer complaints or legal actions based on erroneous product identification  Protects consumer welfare – decrease in potential harm to consumers, reduction in unwarranted recall expenses  Secures supply chain integrity – support for safe expansion into new geographies PolyOne Corporation Page 46 Security and Safety Solutions  Polycast™ Bullet Resistant Sheet, an optically clear, non-yellowing acrylic, provides ballistics protection against powerful weapons • High-impact resistance that foils “smash-and-grab” thieves  GlasArmor™ Bullet Resistant Panels, a UL-listed solution with superior ballistic resistance yet weights 75% less than steel panel • Used in commercial security applications for business, home, and governmental facilities PolyOne Corporation Page 47 3D Printing  Collaborating with customers using 3D printers to create prototypes and samples  Enables customers to develop and test their products and innovations quickly and accurately  3D printing of molds and inserts allows OEMs to develop and test new product innovation using their own equipment and material of choice, more efficient than traditional processes PolyOne Corporation Page 48 Enhanced Ergonomic Technologies  Versaflex™ VDT was developed to absorb vibration and noise in a broad range of applications, including minimally invasive surgical instruments, electronics, firearms, archery and automotive  Can be overmolded onto a rigid substrate without the need for an adhesive to increase production efficiencies and profitability  Creates value by: • Increasing end-user comfort • Eliminating secondary assembly • Differentiating end products PolyOne Corporation Page 49 Sustainable Solutions  reFlex™ Bio-Based Plasticizer non- phthalate additive used to make vinyl more flexible • Derived primarily from soybeans rather than petroleum • Certified by USDA BioPreferred® program  Wilflex™ Oasis Water-Based Inks satisfy consumer demand for eco- conscious products • Long screen life and production- friendly to improve operational efficiencies, increase design quality PolyOne Corporation Page 50 Color and Design Services  First-of-its-kind offering that supports color and product development from concept to reality  Helps brand managers and designers evaluate color and design alternatives to: – accelerate and streamline product development – strengthen brand equity – build marketplace excitement  Enhances product differentiation  Improves efficiency and profitability PolyOne Corporation Page 51 Metal Replacement Technology  Portfolio of solutions that meet upper range of performance requirements, removing barriers to replacing metal with polymers  Applications include: • LED heat sinks • Electronic shielding (EMI/RFI) • Structural integrity at elevated temperatures (i.e., large appliances) • Lead-free radiation shielding (i.e., CT scanners)  Creates value by eliminating the need for machining and secondary operations, removing weight, streamlining production and improving cost efficiencies PolyOne Corporation Page 52 Medical Device Solutions  Catheters made using NEU™ View patent-pending technology are optically translucent, and have superior contrast under X-ray (radiopaque) when compared with alternative catheter materials  Formulations for cardiovascular and intravascular catheters are application-specific, incorporating medical-grade polymers, additives, color, and healthcare-centric manufacturing practices  Only commercially available product that has excellent visibility, both optically and under X-ray, to bolster clinician confidence and offer significant market advantage PolyOne Corporation Page 53 Consumer Electronics Solutions  Ability to offer multiple technology solutions on a global basis for this industry, where many OEMs design in one region, prototype in another, and manufacture in yet another  Sustainable / “green” solutions help customers to differentiate in this market  New formulations for emerging wearables market that meet skin contact requirements and aesthetic needs PolyOne Corporation Page 54 Appliances 4% Building & Construction 4% Consumer 17% Electrical & Electronics 16% Healthcare 12% Industrial 8% Packaging 7% Transportation 19% Wire & Cable 13% At a Glance Global Specialty Engineered Materials 2013 Revenues: $0.6 Billion Solutions 2013 Revenue by Industry Segment Expanding Profits 1.1% 1.3% 3.4% 5.1% 9.6% 8.0% 8.6% 9.3% 12-16% 2006 2007 2008 2009 2010 2011 2012 2013 Q1 2014 2015 Operating Income % of Sales Target United States 43% Europe 33% Canada 2% Asia 18% Latin America 4% 11.6% PolyOne Corporation Page 55 Appliances 2% Building & Construction 11% Consumer 5% Electrical & Electronics 6% Healthcare 7% Industrial 13% Packaging 34% Transportation 10% Wire & Cable 12% Target At a Glance Global Color, Additives and Inks 2013 Revenues: $0.9 Billion Solutions Expanding Profits 1.7% 4.6% 5.1% 5.5% 7.2% 8.1% 9.7% 12.2% 12-16% 2006 2007 2008 2009 2010 2011 2012 2013 Q1 2014 2015 Operating Income % of Sales United States 44% Europe 37% Canada 2% Asia 11% Latin America 6% 2013 Revenue by Industry Segment 13.8% PolyOne Corporation Page 56 At a Glance Designed Structures and Solutions Solutions 2013 Revenues: $0.6 Billion Expanding Profits 2.2% 8 - 10% 6.5% 2012 PF Q1 2013 Q1 2014 2015 Operating Income % of Sales 0.2% Target United States 96% Canada 3% Latin America 1% Appliances 2% Building & Construction 10% Consumer 11% Healthcare 6% Industrial 13% Packaging 32% Transportation 26% 2013 Revenue by Industry Segment PolyOne Corporation Page 57 5.5% 6.9% 3.8% 3.6% 5.5% 4.3% 6.3% 7.2% 2006 2007 2008 2009 2010 2011 2012 2013 Q1 2014 Operating Income % of Sales At a Glance Performance Products and Solutions Solutions Expanding Profits 2013 Revenues: $0.8 Billion United States 81% Europe 1% Canada 14% Asia 2% Latin America 2% 9-12% Target 2013 Revenue by Industry Segment Appliances 8% Building & Construction 34% Consumer 4% Electrical & Electronics 3% Healthcare 1%Industrial 10% Packaging 6% Transportation 16% Wire & Cable 18% 2015 7.7% PolyOne Corporation Page 58 2.6% 3.0% 3.5% 4.0% 4.6% 5.6% 6.4% 5.9% 6 - 7.5% 2006 2007 2008 2009 2010 2011 2012 2013 Q1 2014 2015 Operating Income % of Sales 15.3% 46.0% 2006 Q1 2014 At a Glance Distribution *ROIC is defined as TTM adjusted OI divided by the sum of average debt and equity over a 5 quarter period Solutions 2013 Revenues: $1.1 Billion ROIC* Expanding Profits Target Appliances 5% Building & Construction 5% Consumer 14% Electrical & Electronics 5% Healthcare 24% Industrial 16% Packaging 5% Transportation 23% Wire & Cable 3% 6.1% http://www.polyone.com/Pages/VariationRoot.aspx

Adjusted EPS attributable to PolyOne common shareholders is calculated as follows: 2009* 2010* 2011* 2012* 2013* 2014* 2015* 2016 2017 2018 Net income from continuing operations attributable to PolyOne common shareholders $ 106.7 $ 152.5 $ 153.4 $ 53.3 $ 94.0 $ 78.0 $ 144.6 $ 166.4 $ 173.5 $ 161.1 Joint venture equity earnings, after tax (19.0) (14.7) (3.7) — — — — — — — Special items, before tax(1) (48.7) 24.2 (48.1) 55.1 46.3 164.2 87.6 23.8 32.9 59.5 Special items, tax adjustments(1) (27.2) (96.7) (24.7) (18.9) (13.7) (73.7) (58.7) (15.9) (24.8) (25.3) Adjusted net income from continuing operations attributable to PolyOne common shareholders $ 11.8 $ 65.3 $ 76.9 $ 89.5 $ 126.6 $ 168.5 $ 173.5 $ 174.3 $ 181.6 $ 195.3 Diluted shares 93.4 96.0 94.3 89.8 96.5 93.5 88.7 84.6 82.1 80.4 Adjusted EPS attributable to PolyOne common shareholders $ 0.13 $ 0.68 $ 0.82 $ 1.00 $ 1.31 $ 1.80 $ 1.96 $ 2.06 $ 2.21 $ 2.43 * Historical results are shown as presented in prior filings and have not been updated to reflect subsequent changes in accounting principle, discontinued operations or the related resegmentation. (1) Special items include charges related to specific strategic initiatives or financial restructuring such as: consolidation of operations; debt extinguishment costs; costs incurred directly in relation to acquisitions or divestitures, including adjustments related to contingent consideration; employee separation costs resulting from personnel reduction programs, plant realignment costs, executive separation agreements; asset impairments; mark-to-market adjustments associated with actuarial gains and losses on pension and other post-retirement benefit plans; environmental remediation costs, fines, penalties and related insurance recoveries related to facilities no longer owned or closed in prior years; gains and losses on the divestiture of operating businesses, joint ventures and equity investments; gains and losses on facility or property sales or disposals; results of litigation, fines or penalties, where such litigation (or action relating to the fines or penalties) arose prior to the commencement of the performance period; one-time, non- recurring items; and the effect of changes in accounting principles or other such laws or provisions affecting reported results.

Adjusted EPS attributable to PolyOne common shareholders is calculated as follows: 2009* 2010* 2011* 2012* 2013* 2014* 2015* 2016 2017 2018 Net income from continuing operations attributable to PolyOne common shareholders $ 106.7 $ 152.5 $ 153.4 $ 53.3 $ 94.0 $ 78.0 $ 144.6 $ 166.4 $ 173.5 $ 161.1 Joint venture equity earnings, after tax (19.0) (14.7) (3.7) — — — — — — — Special items, before tax(1) (48.7) 24.2 (48.1) 55.1 46.3 164.2 87.6 23.8 32.9 59.5 Special items, tax adjustments(1) (27.2) (96.7) (24.7) (18.9) (13.7) (73.7) (58.7) (15.9) (24.8) (25.3) Adjusted net income from continuing operations attributable to PolyOne common shareholders $ 11.8 $ 65.3 $ 76.9 $ 89.5 $ 126.6 $ 168.5 $ 173.5 $ 174.3 $ 181.6 $ 195.3 Diluted shares 93.4 96.0 94.3 89.8 96.5 93.5 88.7 84.6 82.1 80.4 Adjusted EPS attributable to PolyOne common shareholders $ 0.13 $ 0.68 $ 0.82 $ 1.00 $ 1.31 $ 1.80 $ 1.96 $ 2.06 $ 2.21 $ 2.43 * Historical results are shown as presented in prior filings and have not been updated to reflect subsequent changes in accounting principle, discontinued operations or the related resegmentation. (1) Special items include charges related to specific strategic initiatives or financial restructuring such as: consolidation of operations; debt extinguishment costs; costs incurred directly in relation to acquisitions or divestitures, including adjustments related to contingent consideration; employee separation costs resulting from personnel reduction programs, plant realignment costs, executive separation agreements; asset impairments; mark-to-market adjustments associated with actuarial gains and losses on pension and other post-retirement benefit plans; environmental remediation costs, fines, penalties and related insurance recoveries related to facilities no longer owned or closed in prior years; gains and losses on the divestiture of operating businesses, joint ventures and equity investments; gains and losses on facility or property sales or disposals; results of litigation, fines or penalties, where such litigation (or action relating to the fines or penalties) arose prior to the commencement of the performance period; one-time, non- recurring items; and the effect of changes in accounting principles or other such laws or provisions affecting reported results.

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Made from continuous glass-fiber reinforced thermoplastic face sheets and polyester foam cores, Hammerhead Marine Composite Panels are engineered to provide simplified installation, long-lasting components, and overall cost reduction for boat manufacturers.

Made from continuous glass-fiber reinforced thermoplastic face sheets and polyester foam cores, Hammerhead Marine Composite Panels are engineered to provide simplified installation, long-lasting components, and overall cost reduction for boat manufacturers.