http://polynet/ethics/Portals/23/documents/Cyber%20and%20Data%20Incident%20Response%20Policy/Cyber_Incident_Response_Policy-September%202018_EN%20-%20v1.pdf http://polynet/ethics/Portals/23/documents/Cyber%20and%20Data%20Incident%20Response%20Policy/Cyber_Incident_Response_Policy-September%202018_EN%20-%20v1.pdf Confidential 6 Avient IT Department Information Systems Use Policy September 1, 2021 APPENDIX A: DEFINITIONS In addition to those terms defined within the body of this Policy, the following definitions are used: “Avient Data” – includes (a) all data and information generated, stored, collected, or processed by Avient through Information Systems; (b) all information under the control of Avient and originating from, belonging to, or received from customers, suppliers, or third parties; (c) all data and information regarding intellectual property of Avient; and (d) purely intra-Avient information connected to individual employees, such as Information System usernames, passwords, and company ID.

Cleveland, Ohio Doral, Florida September 25, 2024 This verification declaration including the opinion expressed herein, is provided to Avient and is solely for the benefit of Avient in accordance with the terms of our agreement.

The extensive capabilities afforded by our modern facility enables us to control particle size, settling characteristics, and long-term stability. The extensive capabilities afforded by our modern facility enables us to control particle size, settling characteristics, and long-term stability.

They use words such as “will,” “anticipate,” “estimate,” “expect,” “project,” “intend,” “plan,” “believe,” and other words and terms of similar meaning in connection with any discussion of future operating or financial performance and/or sales In addition, operating income before special items and adjusted EPS are components of various PolyOne annual and long-term employee incentive plans

They use words such as "will," “anticipate,” “estimate,” “expect,” “project,” “intend,” “plan,” “believe” and other words and terms of similar meaning in connection with any discussion of future operating or financial condition, performance and/or sales. Q 1 2 0 2 3 -8% +6% -1% Flat 10 Total Avient -2.6% 2023 G U IDA N CE $128 $525 $0.56 $2.40 2023 GUIDANCE 12 $800 $3,280 Sales Adjusted EBITDA Adjusted EPS (in millions) (in millions) 13 • Focused on working capital management, restructuring actions to streamline operations • IT investment to further integrate acquired businesses and capture operational efficiencies • Preserve Free Cash Flow to maintain net leverage CASH FLOW / LEVERAGE ($ millions) 2023E Cash Flow from Operating Activities 320$ Less: CapEx (140) Free Cash Flow 180$ Adjusted EBITDA 525$ Net Debt / Adjusted EBITDA 3.0x SUSTAINABILITY AS A GROWTH DRIVER 14 LONG-TERM REVENUE GROWTH DRIVERS Revenue From Sustainable Solutions* 2016-2022 $340M $405M $455M $550M $790M $915M 2016 2017 2018 2019 2020PF** 2021 2022PF*** $1,175M *Avient Sustainable Solutions definitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) **2020 is Pro Forma to include full year of the Clariant Color business ***2022 is Pro Forma for the acquisition of Avient Protective Materials and the divestiture of Distribution 60%+ Key Growth Drivers Sustainable Solutions Composites, Healthcare, Asia / LATAM Overlap Other (GDP Growth) Total Company Revenue SUSTAINABILITY REPORT 2022 • Provides progress on 2030 goals • Reaffirms commitment to U.N.

They use words such as “will,” “anticipate,” “estimate,” “expect,” “project,” “intend,” “plan,”  “believe,” and other words and terms of similar meaning in connection with any discussion of future operating or financial performance and/or sales In addition, operating income  before special items and adjusted EPS are components of various PolyOnebefore special items and adjusted EPS are components of various PolyOne  annual and long‐term employee incentive plans

This also includes being a passionate steward of our natural resources for the long- term health and vitality of our planet. Some technologies needed are not yet available at scale, which limits our ability to take certain actions in the short term. This also includes being a passionate steward of our natural resources for the long-term health and vitality of our planet.

This also includes being a passionate steward of our natural resources for the long-term health and vitality of our planet. This is a new goal which aligns with our customers’ sustainability objectives as well as delivers long term growth for all of Avient stakeholders.  This also includes being a passionate steward of our natural resources for the long-term health and vitality of our planet.

This also includes being a passionate steward of our natural resources for the long-term health and vitality of our planet. Some technologies needed are not yet available at scale, which limits our ability to take certain actions in the short term. This also includes being a passionate steward of our natural resources for the long-term health and vitality of our planet.

This also includes being a passionate steward of our natural resources for the long-term health and vitality of our planet. Some technologies needed are not yet available at scale, which limits our ability to take certain actions in the short term. This also includes being a passionate steward of our natural resources for the long-term health and vitality of our planet.