Avient Corporation Corporate Governance Guidelines The Board of Directors (the “Board”) of Avient Corporation (the “Company”) has adopted the following Corporate Governance Guidelines (the “Guidelines”). All nominees should be individuals of substantial accomplishment with demonstrated leadership capabilities. Succession Planning and Management Development The Board regularly reviews succession planning for the Chief Executive Officer.

DETROIT – PolyOne was recognized last night at the SPE Automotive Innovation Awards ceremony for its participation in developing an all-plastic SHANGHAI – PolyOne Corporation (NYSE: POL), a premier global provider of specialized polymer materials, services and solutions, has announced the la PolyOne Highlights Advanced Packaging Technologies at PACK EXPO 2014

From the beginning to the end of the design process, we aim to help our customers streamline application development, improve speed to market, and have increased confidence in the performance of reinforced polymer materials in structural applications,” said Amit Kulkarni, global director of technology, Specialty Engineered Materials at Avient. See the results and benefits of the predictive simulation technology in thiscase study. Media contact Nicole DeChant  Avient Corporation  nicole.dechant@avient.com

Holger Kronimus, PolyOne vice president Europe and general manager, Specialty Engineered Materials Europe, commented, “We’ve recently developed several technologies in close collaboration with customers that help to improve manufacturing efficiency while also addressing the need for sustainable operations and products.” ECCOH XLS, a moisture-cured technology that helps manufacturers reduce production and operating costs Media contact Matt Defosse Marketing Communications Manager, Europe PolyOne Corporation +49 6407-907-0386 matt.defosse@avient.com

NEW YORK– May 3, 2023 – Avient Corporation, a premier provider of specialized and sustainable material solutions and services, will be exhibiting at the 20th annual LUXE PACK New York trade show next week, highlighting its broad range of polymer technologies for packaging.   Some of the featured technologies include: Media contact Nicole DeChant Avient Corporation nicole.dechant@avient.com

Avient Corporation Avient Corporation Sustainable Development Goals

Qure Medical uses cutting-edge technology to develop custom low extractable/leachable medical formulations that meet the stringent requirements of the medical industry. Investor contact: Isaac DeLuca Vice President, Investor Relations PolyOne Corporation +1 440-930-1226 Isaac.deluca@avient.com Media contact: Kyle Rose Director, Corporate Communications PolyOne Corporation +1 440-930-3162 kyle.rose@avient.com

PolyOne Corporation PolyOne Corporation IQ Design assists customers in identifying time and cost savings opportunities within their new product development process.

Homepage // News Center // Plastpol 2024 to Include Sustainable Technologies From Avient Avient Showcases Sustainable Technologies at Plastpol 2024 Media contact Nicole DeChant Avient Corporation nicole.dechant@avient.com

CLEVELAND– December 7, 2023 – Today, Avient Corporation is proud to introduce its third-party-certified Product Carbon Footprint (PCF) Calculator, developed to evaluate the carbon footprint of Avient’s specialized and sustainable material solutions. Over the past three years, Avient has made significant strides in developing materials to enable sustainability, introducing over 40 new product lines to incorporate more recycled content, bio-derived materials, lightweighting solutions, and energy-saving technologies. Media contact Nicole DeChant Avient Corporation nicole.dechant@avient.com