More innovative product designs, through continual improvement and global customer pull, provide Avient a unique opportunity to help. Our global footprint offers both state-of-the-art facilities and talented commercial associates that enable quick collaboration with our customers—where they need us, when they need us. From healthcare to transportation to packaging, and everything in between, we help our customers meet their product design and sustainability goals.

Custom colorants and special effects to provide shelf appeal and product differentiation Product/Service Overview Standard and custom color solutions for today’s complex medical applications

SHENZHEN, China – April 15, 2025 – Avient Corporation, an innovator of materials solutions, will showcase its portfolio of advanced and sustainable products and services and host three technical seminars at Chinaplas 2025. Additional highlights at the show include various high-temperature colorants and color services, such as: Our local touch and customer engagement, combined with our global presence, allows us to serve customers with agility.

What services and innovative polymer solutions could you leverage to solve challenges in your next generation designs? We are dedicated to serving our Healthcare customers with: • Unparalleled breadth and innovation in material technologies • Design and engineering services to optimize applications for production and performance • Streamlined global supply chain and regulatory coordination to mitigate and reduce risk Because we are really good at solving the world’s most complex material science problems. Our services go beyond what our customers need.

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. 2 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 EMEA Asia Latin America 64% 36% Specialty Engineered Materials Color Additives and Inks 41% 36% 18% 5% 7% 7% 23% 19% 9% 16% 10% 5% 4% Defense Healthcare Packaging Consumer Building & Construction Industrial Transportation 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 2 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.

It was important that the new connector provide signal dampening within an established range as specified by the customer without exceeding the established cost targets. Avient’s team of sales and technical professionals began by carefully listening to the customer’s stated needs and current situation. Avient’s service and support extended beyond the design phase.

Customers have the flexibility to choose from various formulations to meet their process and application requirements.”    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.

Customers have the flexibility to choose a solid masterbatch or liquid concentrate version to meet their process and application requirements.” About PolyOne PolyOne Corporation, with 2016 revenues of $3.3 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.

The company’s ColorWorks Centers are specifically intended to provide customers with color inspiration and technical guidance through a collaborative approach. Avient customers can visit these facilities to work with designers and create innovative effects for plastic color and design, using industry trends to streamline product development. Avient Corporation provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world.

It also provides an alternative to sleeve and opaque designs for containers, enabling customers to achieve aesthetic appeal with high-clarity containers that are also easy to recycle.” PolyOne Corporation, with 2014 revenues of $3.8 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.