PolyOne Board of Directors Declares Quarterly Dividend, Expands Share Repurchase Authorization... PolyOne Board of Directors Appoints Robert M. Board of Directors

CLEVELAND – Oct. 8, 2015 – The Board of Directors of PolyOne Corporation (NYSE: POL) has declared a quarterly cash dividend of twelve cents ($0.12 Jellison as Director Avient Board of Directors Appoints Ashish K.

He serves as a member of the Board of Directors of Constellation Energy Corporation and is on the Dean’s Advisory Board for the College of Science and Engineering at the University of Minnesota.

Onus Managing Director DEKRA Certification, Inc. 1120 Welsh Road, Suite 210 North Wales, PA 19454 USA (215) 997-4519 www.dekra.us/en/audits DEKRA Certification Inc. is an accredited Aerospace Registration Management Program Certification Body, under the ICOP scheme.

He serves as a member of the Board of Directors of Constellation Energy Corporation and on the Dean’s Advisory Board for the College of Science and Engineering at the University of Minnesota.

He serves as a member of the Board of Directors of Constellation Energy Corporation and on the Dean’s Advisory Board for the College of Science and Engineering at the University of Minnesota.

For and on behalf of BSI Theuns Kotze, Managing Director – IMETA Assurance Last Assessment Date: 2022/06/25 Latest issue Date: 2022/08/24 Expiry Date: 2023/08/17 BSI Group India Private Limited T: +91 11 2692 9000 (CIN U74899DL1999PTC101381 info.in@bsigroup.com The Mira Corporate Suites bsigroup.com/en-IN Plot 1&2, Ishwar Nagar, Mathura Road New Delhi-110065, India Good Manufacturing Practices mailto:info.in@bsigroup.com

Limited PO Box 2137, Jeddah 22758 Saudi Arabia Has been assessed and found to meet the requirements of ISO 9001:2015 This certificate is valid for the following scope of operations: Production and Supply of Color and Additive Master Batches Authorised by: Stan Wright Director Date of Certificate Issue: 17 October 2022 Certificate Valid Until: 29 September 2025 Recertification audit before 30 August 2025.

Limited PO Box 2137, Jeddah 22758 Saudi Arabia Has been assessed and found to meet the requirements of ISO 14001:2015 This certificate is valid for the following scope of operations: Production and Supply of Color and Additive Master Batches Authorised by: Stan Wright Director Date of Certificate Issue: 20 December 2022 Certificate Valid Until: 19 December 2025 Recertification audit before 20 November 2025.

Kronimus served as international controller and finance director as well as other positions of financial, commercial and plant management in Avient’s Color, Additives & Ink business unit.