Avient Announces Quarterly Dividend... Avient Board of Directors Appoints Ashish K. Avient Announces First Quarter 2025 Results...

To access PolyOne’s news library online, please go to www.avient.com/news Avient Announces Quarterly Dividend... Avient Board of Directors Appoints Ashish K.

To access PolyOne’s news library online, please visit www.avient.com/news Avient Announces Quarterly Dividend... Avient Board of Directors Appoints Ashish K.

As we begin 2025, we are poised to execute our strategy to deliver value for our shareholders by prioritizing our portfolio, amplifying innovation, leveraging digital technologies and harnessing the collective strengths of our more than 9,000 global employees.” To access Avient’s news library online, please visit www.avient.com/news. Our local touch and customer engagement, combined with our global presence, allows us to serve customers with agility.

Avient’s sustainability initiatives and progress toward its 2030 sustainability goals have been recognized by influential third-party organizations, including earning a Gold certification from EcoVadis, which recognizes a commitment to sustainability, ethics, and responsible business practices. About Avient To access Avient’s news library online, please visit www.avient.com/news.

news library online, please go to www.avient.com/news.

news library online, please go to www.avient.com/news

Certification was granted based on Avient's conformance to the RCMS's comprehensive environmental health, safety and security requirements. The RCMS certification affirms the importance Avient places on having world-class environmental, health, safety and security performance. Exhibit 31.1 CERTIFICATION I, Robert M.

This high-performing formulation provides an effective solution for durable, structural applications that need to withstand extreme environments,” said Matt Mitchell, director, global marketing of Specialty Engineered Materials at Avient. Edgetek Toughened PPA formulations are currently manufactured in the U.S. and available for purchase globally. To access Avient's news library online, please visit www.avient.com/news-events.

We are seeing a steady increase in the demand for fitness clothing, as people are becoming more health-conscious,” said Matt Mitchell, Director, Global Marketing, Specialty Engineered Materials at Avient. They are currently manufactured in Asia and are commercially available globally.   To access Avient’s news library online, please visit www.avient.com/news.