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Patterson, chairman, president, and chief executive officer, PolyOne Corporation.   PolyOne Corporation, with 2015 revenues of $3.4 billion, is a premier provider of specialized polymer materials, services and solutions. Company Officers

AMY EVINS Interim Chief Information Officer Amy Evins is Interim Chief Information Officer at Avient Corporation, a premier provider of specialized and sustainable material solutions and services. Avient Corporation • 33587 Walker Road • Avon Lake, Ohio 44012 • 440.930.1000 • www.avient.com Blank Page Blank Page Blank Page

LESLIE SEQUEIRA Chief Information Officer Leslie Sequeira is Chief Information Officer at Avient Corporation, an innovator of materials solutions that help customers succeed while enabling a sustainable world. Avient Corporation • 33587 Walker Road • Avon Lake, Ohio 44012 • 440.930.1000 • www.avient.com

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.

PolyOne Corporation, with 2013 revenues of $3.8 billion, is a premier provider of specialized polymer materials, services and solutions. Matt Defosse Marketing Communications Manager, Europe PolyOne Corporation +49 6406-832-061 matt.defosse@avient.com Company Officers

CLEVELAND – May 19, 2023 – Avient Corporation, a premier provider of specialized and sustainable material solutions and services, is proud to announce it has earned the LUXE PACK “in green” award, highlighting a Corporate Social Responsibility (CSR) initiative.   Media contact Nicole DeChant Avient Corporation nicole.dechant@avient.com Company Officers

Media contacts Michelle Maniscalco Senior Manager, Marketing Communications Avient Corporation michelle.maniscalco@avient.com Jennifer Huang Senior Manager, Marketing Communications Asia Avient Corporation +86 21-6028-4888 jennifer.huang@avient.com   Company Officers