Breakthrough technologies that minimize wastewater and improve the recyclability of materials and packaging across a spectrum of end uses In this press release, statements that are not reported financial results or other historical information are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. To Investor Center

Homepage // News Center // PolyOne Celebrates Opening of New Asia Innovation Center To News Center Investor Center

Homepage // News Center // Avient Launches GLS™ Thermoplastic Elastomers with Antimicrobial Technology That Protects Against Microbial Growth To News Center Investor Center

September 20, 2023 (NYSE: AVNT)Avient Sustainability Day AGENDA WELCOME Bob Patterson INTRODUCTION Jamie Beggs SUSTAINABILITY STRATEGY Walter Ripple SUSTAINABLE SOLUTIONS Michael Garratt, Chris Pederson, Woon Keat Moh SUMMARY Jamie Beggs WRAP UP AND Q+A Bob Patterson Avient Corporation 2 Forward-Looking Statements Certain statements contained in or incorporated by reference into this presentation constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. This is due to the inherent difficulty of forecasting the timing and amount of certain items, such as, but not limited to, mark-to-market adjustments associated with benefit plans, environmental remediation costs, acquisition-related costs, and other non-routine costs. Global NGO fighting Malaria “Avient’s PREPERM® technology helps make our antennas more efficient.”

Homepage // News Center // PolyOne Expands Automotive Engineered Polymer Portfolio with ElectriPlast™ Conductive Long Fiber Technology To News Center Investor Center

Unique technologies that improve the recyclability of products and enable recycled content to be incorporated, thus advancing a more circular economy In this press release, statements that are not reported financial results or other historical information are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. To Investor Center

Investor Day G L O B A L H I G H Y I E L D & L E V E R A G E D F I N A N C E C O N F E R E N C E F E B R U A R Y 2 0 2 0 FORWARD LOOKING STATEMENTS PolyOne Corporation 2 In this presentation, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. 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 and integrate acquisitions • 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 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 raise or sustain prices for products or services; • Information systems failures and cyber attacks; 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. 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 21 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 22 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 23 Capture sourcing synergies Cross-sell & blend technology 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 customers Retain employees Implement LSS to drive efficiency improvements Innovate with combined portfolio Safety First!

Sensory test at external partner for each lot, limiting risk Overview of caps and closures key requirements and helpful Avient technologies Proprietary light barrier technology that protects your content from the harmful effects of UV rays

But with limited space, various metal systems used to manage heat may prove limiting to design possibilities. Recent advances in polymer technology make it possible to formulate thermally conductive plastics that manage heat just as effectively overall as their metal counterparts.

But with limited space, various metal systems used to manage heat may prove limiting to design possibilities. Recent advances in polymer technology make it possible to formulate thermally conductive plastics that manage heat just as effectively overall as their metal counterparts.