TECHNICAL SERVICES Avient Long Fiber Technologies Application Development SUCCESS. Prototype Capabilities • First articles • Burn off (pyrolysis) studies to analyze fiber retention and performance • Customer trials to display new program tooling • Agile formulation modification, if determined it’s needed after first article runs • Injection molding machines ranging from 50–550 ton Avient’s unique combination of materials, design expertise, and technical services enables us to conquer challenges and unlock the potential of innovation in meaningful and dynamic ways for customers around the world. Our people, ideas, material science, resources, and unwavering commitment to service enables customers to transform their visions into groundbreaking products. 1.844.4AVIENT www.avient.com Copyright © 2023, Avient Corporation.

CLEVELAND – PolyOne Corporation (NYSE: POL), a premier global provider of specialized polymer materials, services and solutions, today announced it has signed an expanded supply agreement with Dow Corning Corporation enabling PolyOne Distribution to sell Dow Corning® brand silicones to healthcare customers in China. PolyOne Corporation, with 2013 revenues of $3.8 billion, is a premier provider of specialized polymer materials, services and solutions. A global leader in silicones, silicon-based technology and innovation, Dow Corning offers more than 7,000 products and services via the company’s Dow Corning® and XIAMETER® brands.

They are specifically designed to improve the customer experience of working with post-consumer recycled (PCR) content Both align with the eight ways Avient helps customers be more sustainable.  By speeding the evaluation process, the service also gives greater flexibility to customers that may need to switch from one PCR content source to another, which is especially important due to today’s supply variability.

They are based on management’s expectations that involve a number of business risks and uncertainties, any of which could cause actual results to differ materially from those expressed in or implied by the forward-looking statements. 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; • 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; • Our ability to achieve strategic objectives and successfully integrate acquisitions, including the implementation of a cloud-based enterprise resource planning system, S/4HANA; • 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 and any recessionary conditions; and • Other factors described in our Annual Report on Form 10-K for the year ended December 31, 2023 under Item 1A, “Risk Factors.” For the same reasons, Avient is unable to address the probable significance of the unavailable information. 3 AVIENT OVERVIEW 2023 Financial ResultsCompany Overview Revenue By: 9,300 Employees 102 Manufacturing Sites 20,000+ Customers  Innovating materials and processing solutions to solve our customers’ challenges while enabling a sustainable world  Broad portfolio of technologies with market leading positions and flexibility to anticipate and meet customer needs  Focus is on organic revenue growth and margin expansion, following our successful portfolio transformation $3.14B Revenue $2.36 Adjusted EPS $502M Adjusted EBITDA 16.0% Adjusted EBITDA Margins $186M Adjusted Free Cash Flow U.S. & Canada 64% Specialty Engineered Materials Color Additives and Inks 41% 23% 19% 10% 5% 4% Building & Energy Telecom Geography Segment Industry 2024 Financial Guidance $515 to $540 million Adjusted EBITDA $2.55 to $2.70 Adjusted EPS 4 Industry Sustainability Standards ESG Ratings Performance 1 4 87th 94th percentile Avient CDP Score: A- SUSTAINABILITY PERFORMANCE AND RECOGNITION AU G U S T 6 , 20 24 W EB CAS T P RE SE N TATI O N 6 Q2 2024 HIGHLIGHTS • 5% organic sales growth supported by broad-based growth across all regions in both CAI and SEM segments • Growth stemmed from gaining share, winning new product specifications and restocking in certain end markets • Cost control and operational discipline expanded EBITDA margins by 100 bps • EPS exceeded guidance by $0.05 and increased 21% vs the prior year Adj.

PRODUCT BULLETIN Cesa™ Fiber Tracer Concentrates The textile supply chain is usually long and complex, with several material and service suppliers playing a role. A test carried out on the textile can confirm the presence of the unique taggant and therefore confirm the customer/product line the textile originated from. KEY BENEFITS • Unique and personalized tracer for customer/ product lines • Suitable for polyester and polyamide (nylon), including recycled grades; possibility to develop solutions for bio-polymers • No impact on spinnability, color or yarn properties • Can be combined with color into a single product for convenience • Complies with key regulatory requirements by EN, DIN, UNI and others • Supplied with a testing service package Copyright © 2022, Avient Corporation.

All FlexOne units are supplied directly from Avient’s distribution hub, ensuring consistent of customer service and eliminating variation of supply. Avient Technical Service will order and deliver a 1L or 3L PlanetPak trial kit to your site. 3. Our Technical Service Engineer will arrive with the FlexOne Trial Unit, plug it in and run the trial.

LubriOne anti-wear solutions are well established in many industries, enabling customers to replace metal bearings, for example, or to stop using oil or other external lubricants. About PolyOne PolyOne Corporation, with 2015 revenues of $3.4 billion, is a premier provider of specialized polymer materials, services and solutions. The company is dedicated to serving customers in diverse industries around the globe, by creating value through collaboration, innovation and an unwavering commitment to excellence.

CLEVELAND – PolyOne Corporation (NYSE: POL) a premier global provider of specialized polymer materials, services and solutions, today announced the launch of UltraTuf™ SG sheet, a tough, weather-resistant thermoforming sheet for signage and glazing applications.  This new material was developed to meet customer needs for an expanded solution set that tackles the toughest outdoor signage applications. About PolyOne PolyOne Corporation, with 2014 revenues of $3.8 billion, is a premier provider of specialized polymer materials, services and solutions.

Uniflon’s local warehousing, sales and technical support expertise will help our customers reduce their product lead times and accelerate their speed to market. As a result, this partnership will provide enhanced service for our customers in the economic heart of South America.” PolyOne Corporation, with 2013 revenues of $3.8 billion, is a premier provider of specialized polymer materials, services and solutions.

Product/Service Overview Product/Service Overview These panels are designed and customized to maximize performance and minimize weight.