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

The Corporate Ethics Officer, in coordination with the Legal Department, is responsible for giving advice on interpreting and applying this Policy, supporting training and education, and responding to reported concerns. Under these circumstances, contact the Corporate Ethics Officer (ethics.officer@avient.com) or General Counsel (legal.officer@avient.com) immediately. An independent company receives all website and phone reports received by the Ethics Hotline and reports the information to the Corporate Ethics Officer.

Van Hulle, president, Color, Additives and Inks, PolyOne Corporation. PolyOne Corporation, with 2015 revenues of  $3.4 billion, is a premier provider of specialized polymer materials, services and solutions. Company Officers

PolyOne Corporation Chairman, President and Chief Executive Officer, PolyOne Corporation

The company was recently ranked tenth by Corporate Knights, a Canadian media and investment research company, in its Global 100, a list of the most sustainable corporations in the world. Media contact Matt Defosse Marketing Communications Manager, Europe PolyOne Corporation +49 6406-832-061 matt.defosse@avient.com Company Officers

Newlin, Chairman, President and Chief Executive Officer. Executive Vice President and Chief Financial Officer, Bradley C. Company Officers

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.

LESLIE SEQUEIRA Chief Information Officer Leslie Sequeira is chief information officer for 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

PolyOne Corporation PolyOne Corporation Rose, Vice President, Corporate Communications, PolyOne Corporation, +1 440-930-3162, kyle.rose@avient.com

PolyOne Corporation PolyOne Corporation PolyOne Corporation