This Policy does not create a contract of employment, and does not alter an employee’s status as an at-will employee. 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.

DATE 04/23/2020 DOCUMENT ID 202011402526 NAME RESERVATION (NRO) DESCRIPTION FILING 39.00 EXPED 100.00 CERT 0.00 COPY 0.00 Receipt Effective Date: 04/23/2020 DOC ID ----> 202018203934 180 East Broad Street, 16th Floor Columbus, OH 43215 (877) 767-6446 | (614) 466-2655 info@OhioSecretaryofState.gov www.OhioSecretaryofState.gov June 22, 2020 CT Corporation System Attn: Ken Brown 4400 Easton Common Way, Suite 125 Columbus, OH 43219 Re: Preclearance of Certificate of Amendment Dear: Mr.

Table of Contents Introduction 1 Overmolding 2 Material Selection 4 Part and Mold Design 6 Material Handling and Preparation 17 TPE Injection Molding 18 Overmolding Processing – Maximizing Adhesion 21 TPE Injection Molding Troubleshooting 23 TPE Overmolding Troubleshooting 28 Index 30 1 Introduction Avient is the recognized leader in the overmolding of thermoplastic elastomers (TPEs). Flow Length, inches (cm) Series Injection Velocity, 3 in/s (8 cm/s) Injection velocity, 5 in/s (13 cm/s) DynaflexTM D 13-15 (33-38) 18-20 (46-51) DynaflexTM G 12-22 (30-56) 18-30 (46-70) VersaflexTM 9-16 (23-41) 13-26 (33-66) VersalloyTM 18-20 (46-51) 30-32 (76-81) VersollanTM 12-17 (30-43) 19-22 (48-56) *Spiral flow tests performed using a 0.0625" (1.6mm) thick, 0.375" (9.5mm) wide channel at 400˚F (204˚C). Flow Length, inches (cm) Series Injection Velocity, 3 in/s (8 cm/s) Injection velocity, 5 in/s (13 cm/s) DynaflexTM D 13-15 (33-38) 18-20 (46-51) DynaflexTM G 12-22 (30-56) 18-30 (46-70) VersaflexTM 9-16 (23-41) 13-26 (33-66) VersalloyTM 18-20 (46-51) 30-32 (76-81) VersollanTM 12-17 (30-43) 19-22 (48-56) *Spiral flow tests performed using a 0.0625" (1.6mm) thick, 0.375" (9.5mm) wide channel at 400˚F (204˚C).

Gebze, Turkey Shanghai, China (b) 23. Rebate programs offered are typically credited to customers for achieving defined volume levels. 23 AVIENT CORPORATION Environmental Liabilities We are a party to a Consent Decree related to remedial actions at the former Goodrich Corporation Calvert City site and will incur environmental remediation costs related to this matter. Exhibit Description 2.1† Share Purchase Agreement, dated December 19, 2019, by and between PolyOne Corporation and Clariant AG (incorporated by reference to Exhibit 2.3 to the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2019, SEC File No. 1-16091). 2.2† Signing Protocol between Avient Corporation and Koninklijke DSM N.V., dated April 19, 2022 (including the final form of Sale and Purchase Agreement between Avient Corporation and Koninklijke DSM N.V. as Annex A) (incorporated by reference to Exhibit 2.1 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2022, SEC File No. 1-16091) 2.3† Sale and Purchase Agreement of the DSM Protective Materials Business, by and among Koninklijke DSM N.V., Avient Corporation and, solely for the purposes of Clause 2.1 and Clause 2.2, Fiber-Line International B.V., dated June 23, 2022 (incorporated by reference to Exhibit 2.1 to the Company's Current Report on Form 8-K filed on June 24, 2022, SEC File No. 1-16091) 2.4† Asset Purchase Agreement, dated August 11, 2022, by and between Avient Corporation and Hilo Group Buyer, LLC (incorporated by reference to Exhibit 2.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2022). 3.1 Amended and Restated Articles of Incorporation of Avient Corporation (as amended through June 30, 2020) (incorporated by reference to Exhibit 3.1 to the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2020, SEC File No. 1-16091) 3.2 Amended and Restated Code of Regulations, effective June 30, 2020 (incorporated by reference to Exhibit 3.2 to the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2020, SEC File No. 1-16091) 4.1 Indenture, dated May 13, 2020, between PolyOne Corporation and U.S.