Revised: December 20, 2024 AVIENT CORPORATION Securities Trading Policy 1. General Policy: The Board of Directors of Avient Corporation (the “Company”) has determined, consistent with the Company’s Code of Conduct, that it is the Company’s policy to comply with all applicable federal and state securities laws, including those relating to buying or selling securities of the Company. The Company may permit exceptions to this policy for individuals only upon prior authorization by any two of the following three officers of the Company: Chief Executive Officer, Chief Financial Officer, and General Counsel. 12.

Benefits of Bio-Based Solutions Finding value in addressing the increased demand for bio-derived solutions.

The material, a highly filled polymer based on Avient’s Gravi-Tech™ technology, is specifically formulated to address health care industry needs and regulations.

ColorMatrix היא חברת בת של התאגיד Avient Corporation. ColorMatrixはAvient Corporationの全額出資子会社です。 Explore our worldwide innovation centers, sales offices, regional headquarters, distribution and manufacturing centers

Patterson, president and chief executive officer, PolyOne Corporation. Rose Director, Corporate Communications PolyOne Corporation +1 440-930-3162 kyle.rose@avient.com Company Officers

Avient Corporation (NYSE: AVNT) provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Media contact Nicole DeChant Avient Corporation nicole.dechant@avient.com Company Officers

PolyOne Corporation, with 2013 revenues of $3.8 billion, is a premier provider of specialized polymer materials, services and solutions. Media contact Jennifer Huang Marketing Communications Manager, Asia PolyOne Corporation +86 21 50802923 jennifer.huang@avient.com Company Officers

SHANGHAI – PolyOne Corporation (NYSE: POL) is introducing its Percept™ Authentication Technologies in Asia this week at Chinaplas 2014. PolyOne Corporation, with 2013 revenues of $3.8 billion, is a premier provider of specialized polymer materials, services and solutions. Company Officers

About PolyOne PolyOne Corporation, with 2015 revenues of $3.4 billion, is a premier provider of specialized polymer materials, services and solutions. Michelle Maniscalco Marketing Communications Manager, North America PolyOne Corporation +1 440-930-1988 michelle.maniscalco@avient.com Company Officers

FRIEDRICHSHAFEN, Germany – PolyOne Corporation is featuring specialty solutions at the Fakuma trade show this week. Matt Defosse Marketing Communications Manager, Europe PolyOne Corporation +49 6407-907-0386 matt.defosse@avient.com Company Officers