Patterson, Chairman, President and Chief Executive Officer, Avient Corporation. Webcast Details Avient will host a webcast on Wednesday, April 20, 2022 at 9:00 a.m. Rose Vice President, Corporate Communications Avient Corporation +1 440-930-3162 kyle.rose@avient.com mailto:giuseppe.disalvo@avient.com mailto:kyle.rose@avient.com 5 Attachment 1 Avient Corporation Summary of Condensed Consolidated Statements of Income (Unaudited) (In millions, except per share data) Three Months Ended March 31, 2022 2021 Sales $ 1,293.8 $ 1,162.3 Operating Income 128.6 120.4 Net income attributable to Avient shareholders 84.2 79.3 Basic earnings per share attributable to Avient shareholders $ 0.92 $ 0.87 Diluted earnings per share attributable to Avient shareholders $ 0.91 $ 0.86 Senior management uses comparisons of adjusted net income attributable to Avient shareholders and diluted adjusted earnings per share (EPS) attributable to Avient shareholders, excluding special items, to assess performance and facilitate comparability of results.

Special Effects Avient offers a variety of special effect options. Avient also developed a series of new solutions that allow the incorporation of higher recycled polymer content in the final article. Avient makes no warranties or guarantees respecting suitability of either Avient’s products or the information for your process or end-use application.

Avient’s chief operating decision maker uses these financial measures to monitor and evaluate the ongoing performance of Avient and each business segment and to allocate resources. Each of such adjustments has not yet occurred, are out of Avient’s control and/or cannot be reasonably predicted. Senior management believes the measures described above are useful to investors because they allow for comparison to Avient's performance in prior periods without the effect of items that, by their nature, tend to obscure Avient's operating results due to the potential variability across periods based on timing, frequency and magnitude.

As suppliers of these materials continue to develop innovations in chemistry and capabilities, the appeal of both TPEs and LSR will grow even stronger. YOUR NEXT MOVE Copyright © 2023, Avient Corporation. Avient makes no warranties or guarantees respecting suitability of either Avient’s products or the information for your process or end-use application.

Now in their fourth year, our keystone internal training programs—NextGen and PolyMasters—are developing “tomorrow’s leaders today” in preparation to effectively lead with inspiration. Consistent with the culture we’re building, we provide new hires technical and practical training that enables their success in the marketplace. Research and Development We have substantial technology and development capabilities.

THE SOLUTION Because they knew Avient could help, the connector company’s design engineers invited Avient into the development process. Avient’s development team went back to work and quickly developed a flame-retardant grade that meets UL requirements for a V0 rating. Avient’s willingness to invest the time and resources needed to ensure success enabled the manufacturer to develop a cost-effective, well-per forming product for its customer.

THE SOLUTION Avient engineers guided the Victorinox team early in the development cycle for the new Soldier’s Knife, proposing a combination of materials for the handles that would meet the design aspirations as well as Swiss Army standards for durability. Avient provided product development assistance and testing, and ultimately delivered customized materials that met strict requirements for durability. To learn more, contact Avient at +1.844.4AVIENT (1.844.428.4368) or visit www.avient.com.

As a result of overpacking, parts may also develop high molded-in stresses, which lead to warpage.

THE SOLUTION The OEM approached Avient with its challenge. After developing a deep understanding of the customer’s needs, Avient’s team quickly went to work to formulate a custom OnColor™ color and then added Cesa™ WithStand™ antimicrobial technology to make a single Smartbatch™ masterbatch that passed all of the product’s challenging requirements. Avient has compiled extensive data that enabled the OEM to shave weeks off the product development timeline and save nearly $50,000 in potential antimicrobial product protection testing fees.

Ashish Khandpur, President and Chief Executive Officer, Avient Corporation. To access Avient’s news library online, please visit www.avient.com/news. About Avient Our purpose at Avient Corporation (NYSE: AVNT) is to be an innovator of materials solutions that help our customers succeed, while enabling a sustainable world.