Collaborating with Avient provides access to a world-class team with expertise in component design, tooling, molding processes, and formulation development. The GLS™ TPE Overmolding Guide is a compilation of more than 25 years of experience in the development, design and processing of overmolding TPEs, based on contributions from a variety of Avient and industry sources.

Development and application of SBC compounds to offer good economics and formulation flexibility meeting the end use performance requirements Adhesion mechanisms and novel TPE developments for overmolding

The Avient team used their extensive knowledge and experience working with high-density polymers to develop a specialized Gravi-Tech™ high-density polymer composite that met PolyCase’s needs and fit the profile of their proprietary injection molding process. Avient also provided technical support to speed product development and commercial launch.

Detailed conversations with the shops’ boot experts helped the researchers develop a thorough understanding of the needs of the different types of skiers, from the top-level experts to more accomplished (prepared) customers and finally the so called ‘Sunday skier.’ Ski boot manufacturers work almost two years ahead, so the colors were developed to provide guidance for the 2021 – 2022 ski season.

Detailed conversations with the shops’ boot experts helped the researchers develop a thorough understanding of the needs of the different types of skiers, from the top-level experts to more accomplished (prepared) customers and finally the so called ‘Sunday skier.’ Ski boot manufacturers work almost two years ahead, so the colors were developed to provide guidance for the 2021 – 2022 ski season.

Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: • 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; • disruptions or inefficiencies in our supply chain, logistics, or operations; • changes in laws and regulations in jurisdictions where we conduct business, including with respect to plastics and climate change; • fluctuations in raw material prices, quality and supply, and in energy prices and supply; • demand for our products and services; • 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; • our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; • information systems failures and cyberattacks; • our ability to service our indebtedness and restrictions on our current and future operations due to our indebtedness; • amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; • other factors affecting our business beyond our control, including without limitation, changes in the general economy, changes in interest rates, changes in the rate of inflation, geopolitical conflicts, tariffs, and any recessionary conditions; and • other factors described in our Annual Report on Form 10-K under Item 1A, “Risk Factors.” All Rights Reserved 2025 4 Key messages Avient is evolving to its next phase as an innovator of materials solutions to help our customers succeed, while enabling a sustainable world Our primary focus is on organic revenue growth and margin expansion ► intersect secular trends and high growth markets with our technologies ► build businesses in high growthcatalyze growth in our core markets ► hybridization Our strategy is enabled and driven by our focus on (a) portfolio prioritization, (b) amplifying innovation, (c) digital for operational excellence and growth, and (d) leadership, talent and culture for the Avient of the future 5Copyright © . All Rights Reserved 2025 9 Strategic approach to drive sustainable growth GROWING AT GROWING AT 1 Core grows above macro driven by share wins and faster business development in prioritized portfolios (growth vectors) CATALYZE THE CORE 2 Portfolios in high growth markets grow faster than core – building sizeable businesses of scale rapidly BUILD NEW PLATFORMS OF SCALE ► Prioritizing ► differently ► Creating “space” ► focused front-end and back-end structures Avient sales growth Copyright © .

ColorMatrix™ AAnchor™ Acetaldehyde Control Technology: a finalist for Product Technology Innovation of the Year for sustainable packaging at the Plastics Recycling Show Europe (PRSE) 2024, this specially formulated acetaldehyde scavenger for PET packaging developed to improve recyclability, enhance bottle quality, and meet compliance with regulatory limits – winner will be announced during PRSE 2024 in Amsterdam, June 19-20, 2024 This includes offering invaluable insights on steering through environmental standards, meeting consumer demands for more sustainable products, and developing innovative approaches to brand differentiation, such as:   Enhancing Recyclability: Increasing recycled content in polymers and enhancing recyclability through intelligent design to develop innovative approaches to brand differentiation and meet consumer demands for eco-conscious products  

Kedrowski Page 38 Operational Excellence • Operational Excellence is a never-ending quest for improvement in response to the voice of our customers and shareholders • It is all about strengthening our capabilities to deliver value flawlessly to our customers deliver value flawlessly to our customers • It challenges us to enhance our productivity, profitability, and efficiency in all phases of our business, from safety to quality to waste elimination to environmental stewardship Page 39 Lean Six Sigma Initiative • In 2009, Lean Six Sigma was launched to improve execution skills across all businesses, functions, and global regions • A company-wide diagnostic was conducted, resulting in identification of six conducted, resulting in identification of six strategic improvement platforms • Financial targets were estimated, resources identified and trained results delivered , Page 40 PolyOne OSHA Recordable Incidence Rate 4 5 6 5.1 Safety Performance *Rubber And Plastics Manufacturing Industry (2010 Bureau of Labor Statistics). 0 1 2 3 2005 2006 2007 2008 2009 2010 2011 Industry Average 1.4 1.3 1.1 1.1 0.85 0.65 0.57 Page 41 • Exemplary on-time delivery • Best-in-class working capital % of sales 81% 87% 88% 95% 93% 92% 94% 2005 2006 2007 2008 2009 2010 2011 On-Time Delivery* Lean Six Sigma Delivering Results • Approximately $200M in cash driven by working capital improvements 16.2% 14.4% 18.9% 11.7% 9.6% 9.6% 2006 2007 2008 2009 2010 2011 WC % of Sales 2005 2006 2007 2008 2009 2010 2011 *As measured to customer request date Page 42 40.0% Percent of Associates Trained in LSS World’s Best Start-up Program in 2009* World’s Best Business Process Excellence Program in 2012* Award-Winning Lean Six Sigma Program *Both awards received from International Quality and Productivity Center 16.5% 40.0% 2009 2011 Page 43 • Globally leverage strategic supplier management best practices • Implement world class demand management processes Critical Imperatives • Improve operational reliability and efficiencies • Optimize global freight management Drive 50 – 100 basis points of gross margin expansion per year Page 44 Page 45

Mevopur™ Healthcare Colorants and Formulations represent a broad portfolio of polymer colorant solutions developed specifically for today’s complex and highly regulated applications. It also contains more specialty formulations like the HC BT218 grade, which was developed specifically to handle the complexities of biopharmaceutical tubing and deliver excellent weldability, kink resistance, and low levels of extractables. Colorant Chromatics™ Transcend™ Premier Healthcare Colorants are bright, high-temperature solutions developed specifically for medical applications.

Avient’s featured range of products on display includes customized protection film materials, adhesive TPEs for textile fabric, bio-based TPEs, and specialty engineered materials developed to enhance product performance in the building and construction, automotive, and consumer industries. reSound™ REC TPEs: specially developed for automotive interiors, formulated with 55% post-consumer recycled (PCR) content to offer a more sustainable alternative to standard TPE grades without compromising performance criteria such as ultraviolet (UV) stability, low volatile organic compound (VOC) content, low odor, and low fogging in applications such as heating, ventilation, and air conditioning (HVAC) nozzles, interior mats, and cup holders Versaflex™ PF TPEs: specially developed to create a co-extruded tack layer for surface protective films that can be easily applied and maintain tack with minimal build, peel smoothly during removal, and remove entirely with little to no residue or ghosting.