NYSE: POL) today announced that the underwriters of its previously consummated public offering of 13,333,333 common shares have fully exercised their option to purchase an additional 2,000,000 common shares at the public offering price of is a premier provider of specialized polymer materials, services and solutions. masterbatch business and achieve the expected results of the acquisitions, including, without limitation, the acquisitions being accretive; 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 plastics 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; an inability to achieve or delays in achieving or achievement of less than the anticipated financial benefit from initiatives related to acquisition and integration, working capital reductions, costs reductions and employee productivity goals; information systems failures and cyberattacks; 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.

CLEVELAND – October 16, 2023 – Avient Corporation, a premier provider of specialized and sustainable material solutions and services, today announced it has received ISO 13485:2016 certification for its Glendale, Arizona manufacturing site.   For more information, visit https://www.avient.com.  

About PolyOne PolyOne Corporation, with 2015 revenues of $3.4 billion, is a premier provider of specialized polymer materials, services and solutions. http://www.ecocenter.org/article/news-ecolink-press-releases/new-ecology-center-guide-toxic-chemicals-cars-helps-consumers

About PolyOne PolyOne Corporation, with 2016 revenues of $3.3 billion, is a premier provider of specialized polymer materials, services and solutions. For more information on PolyOne - Glasforms and GlasArmor ballistic resistant panels, visit https://www.avient.com/products/advanced-composites.

For more information, visit https://www.se.com/ww/en/.   PolyOne Corporation, with 2013 revenues of $3.8 billion, is a premier provider of specialized polymer materials, services and solutions.

About PolyOne PolyOne Corporation, with 2016 revenues of $3.3 billion, is a premier provider of specialized polymer materials, services and solutions. EDITORS: For a high-resolution image, please click here: OnCap™ anti-fog additive solutions To access PolyOne’s news library online, please go to http://www.avient.com/news.

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The company noted it will provide more details on its second quarter results and outlook during the webcast scheduled for 8:00 a.m. Refer to Attachment 7 Reconciliation of Non-GAAP Financial Measures for details regarding adjustments to previously reported results to arrive to the pro forma financial metrics. Webcast Details The webcast can be viewed live at avient.com/investors, or by clicking here: https://edge.media- server.com/mmc/p/p4owuchb.

AVIENT SOLUTION SERVICE EXCELLENCE + PERFORMANCE LEARN MORE Copyright © 2022, Avient Corporation. https://www.avient.com/products/engineered-polymer-formulations/general-engineered-formulations/nymax-bergamid-polymer

LEADING WASTE MANAGEMENT OEM I N D U S T R I A L C O N T A I N E R S • Eliminate shrinkage and warpage, and control dimensional aspects of finished parts • Improve quality assurance metrics and reduce downtime associated with quality rejections • Reduce process parameter changes and maintain consistency when running multiple colors • Lightweighting solution offering energy savings, process optimization & extended manufacturing run times • Preserved industrial waste container quality while maintaining functional performance and application dimensional stability • Provided xpertise in process optimization and polymer formulation, where material & mold flow, reducing cycle times, and color harmony between diverse polymers matter most • Accelerated speed to market by several weeks with versatile agnostic product forms (solid and liquid) coupled with technical service Hydrocerol™ and Excelite™ Chemical Foaming Agents (CFA) KEY REQUIREMENTS WHY AVIENT? https://www.avient.com/products/polymer-additives/foaming-agents