Richardson, Executive Vice President, Chief Financial Officer Robert M. Patterson, Chairman, President and Chief Executive Officer Michael A. Garratt, Senior Vice President, Chief Commercial Officer Lisa K.

Patterson President and Chief Executive Officer Kurt Schuering Vice President, Global Key Account Management Bradley C Richardson Executive Vice President and Chief Financial Officer Cathy K. Kahler Senior Vice President Chief Commercial Officer Dr. Christopher Murphy Vice President of Research and Development, Chief Innovation Officer Michael A.

Headquarters, R&D, Manufacturing Fiber-Line LLC 3050 Campus Drive Hatfield, PA 19440 +1 215.997.9181 Manufacturing Operations Fiber-Line LLC 280 Performance Drive SE Hickory, NC 28602 +1 828.326.8700 European Headquarters, Operations, Sales Office Fiber-Line International B.V. Fahrenheitlaan 8 9207 HE Drachten The Netherlands +31(0) 58 216 7599 European Manufacturing Operations Fiber-Line International Unit 1B, Churnet Park, James Brindley Road Leek, Staffordshire, ST13 8YH Asia Pacific Operations & Sales Office Fiber-Line International Building 9, No. 8 Lanxiang road, Shimoxi Garden, Wujin Area Changzhou, Jiangsu, China, 213145 +86(0)519-8885 7566

EXECUTIVE OFFICERS OF THE REGISTRANT Executive officers are elected by our Board of Directors to serve one-year terms. PolyOne has adopted a code of ethics that applies to its principal executive officer, principal financial officer and principal accounting officer. PolyOne will post any amendments to, or waivers of, its code of ethics that apply to its principal executive officer, principal financial officer and principal accounting officer on its website.

Avient has adopted a code of ethics that applies to its principal executive officer, principal financial officer and principal accounting officer. PATTERSON Chairman, President and Chief Executive Officer (Principal Executive Officer) /S/ JAMIE A. CORPORATE OFFICERS ROBERT M.

EXECUTIVE OFFICERS OF THE REGISTRANT Executive officers are elected by our Board of Directors to serve one-year terms. PolyOne has adopted a code of ethics that applies to its principal executive officer, principal financial officer and principal accounting officer. PolyOne will post any amendments to, or waivers of, its code of ethics that apply to its principal executive officer, principal financial officer and principal accounting officer on its website.

EXECUTIVE OFFICERS OF THE REGISTRANT Executive officers are elected by our Board of Directors to serve one-year terms. PolyOne has adopted a code of ethics that applies to its principal executive officer, principal financial officer and principal accounting officer. PolyOne will post any amendments to, or waivers of, its code of ethics that apply to its principal executive officer, principal financial officer and principal accounting officer on its website.

EXECUTIVE OFFICERS OF THE REGISTRANT Executive officers are elected by our Board of Directors to serve one-year terms. PolyOne will post any amendments to, or waivers of, its code of ethics that apply to its principal executive officer, principal financial officer and principal accounting officer on its website. CORPORATE OFFICERS STEPHEN D.

Headquarters, R&D, Manufacturing Fiber-Line LLC 3050 Campus Drive Hatfield, PA 19440 +1 215.997.9181 Manufacturing Operations Fiber-Line LLC 280 Performance Drive SE Hickory, NC 28602 +1 828.326.8700 European Headquarters, Operations, Sales Office Fiber-Line International B.V. Fahrenheitlaan 8 9207 HE Drachten The Netherlands +31(0) 58 216 7599 European Manufacturing Operations Fiber-Line International Unit 1B, Churnet Park, James Brindley Road Leek, Staffordshire, ST13 8YH Asia Pacific Operations & Sales Office Fiber-Line International Building 9, No. 8 Lanxiang road, Shimoxi Garden, Wujin Area Changzhou, Jiangsu, China, 213145 +86(0)519-8885 7566

CERTIFICATE OF INCORPORATION ON CHANGE OF NAME Company Number 3141094 The Registrar of Companies for England and Wales hereby certifies that under the Companies Act 2006: POLYONE CORPORATION UK LIMITED a company incorporated as private limited by shares, havingits registered office situated in England and Wales, has changed its name to: AVIENT MATERIAL SOLUTIONS UK LIMITED Given at Companies House on9th November 2021.