Regulatory / Compliance Demands  Ensuring you have approved material for your application use case is critical. Navigating approvals and, let’s be honest, paperwork can be overwhelming.

No Repricing Without Shareholder Approval. Generally, each grant of an award under the 2017 Plan will be evidenced by an award agreement, certificate, resolution or other type or form of writing or other evidence approved by the Committee (an “Evidence of Award”), which will contain such terms and provisions as the Committee may determine, consistent with the 2017 Plan. m) “Evidence of Award” means an agreement, certificate, resolution or other type or form of writing or other evidence approved by the Compensation Committee that sets forth the terms and B-2 conditions of one or more awards granted under this Plan.

NOR AZIMAH BINTI ABDUL AZIZ REGISTRAR OF COMPANIES MALAYSIA (ACT 777) This is to certify that CERTIFICATE OF INCORPORATION ON CHANGE OF NAME OF COMPANY Dated at SEBERANG JAYA, PULAU PINANG this 25th day of August 2021. This certificate is generated from MYDATA SSM Services as at 31/08/2021 12:30:12 1 1/ Date: Tue Aug 31 12:30:12 2021 Printing Date: 31/08/2021User Id: mooileen

Certificate No.: CERT-0116814 Original Certification Date: November 24, 2010 File No.: 1616267 Certification Effective Date: April 1, 2021 Issue Date: March 30, 2021 Certificate Expiry Date: March 31, 2024 ________________________________________________________________________________ ISO 9001 Registered by: QMI-SAI Canada Limited (SAI Global), 20 Carlson Court, Suite 200, Toronto, Ontario M9W 7K6 Canada. This registration is subject to the SAI Global Terms and Conditions for Certification. This certificate remains the property of SAI Global and must be returned to them upon request.

SKZ Standart-Dokumentvorlage This certificate is valid from: 23.05.2024 bis: 19.05.2027 Certificate No.: 000870.E/24.R Würzburg, 23.05.2024 Benjamin Kirchgeßner Certification Body Certificate The SKZ - Cert GmbH certifies to the company Avient Th. This certificate is valid from: 23.05.2024 bis: 19.05.2027 Certificate No.: 000870.E/24.R Würzburg, 23.05.2024 Benjamin Kirchgeßner Certification Body Appendix to certification number: 000870.E/24.R Avient Th.

UL94 HB rating, food contact approval, toys). EC) 1907/2006 and amendments) • UL94 file for MB (QMQS.E73454) and formulations (QMQS.E103015) • “Toys declaration” Directive 2009/48/EC • Waste Electrical & Electronic Equipment (WEEE) * Contact us for more detailed information about our ISO certifications.

MSC Certificate Place and date: For the issuing office: Shanghai, 20 March 2024 DNV - Business Assurance Building 9, No. 1591 Hongqiao Road, Changning DistrictShanghai China 200336 Zhu Hai Ming Management Representative Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid. ACCREDITED UNIT: DNV Business Assurance B.V., Zwolseweg 1, 2994 LB, Barendrecht, Netherlands - TEL: +31(0)102922689. www.dnv.com/assurance MANAGEMENT SYSTEM CERTIFICATE Certificate no.: 7071-1998-AQ-RGC-RvA Initial certification date: 28 April 1998 Valid: 30 March 2024 – 29 March 2027 This is to certify that the management system of PolyOne-Shanghai, China No. 88, Guo Shou Jing Road, Z. Park, China (Shanghai) Pilot Free Trade Zone, Shanghai, China 201203 and the sites as mentioned in the appendix accompanying this certificate has been found to conform to the Quality Management System standard: GB/T 19001-2016 / ISO 9001:2015 This certificate is valid for the following scope: Design and Manufacture of Colour and Additive Concentrates http://www.dnv.com/assurance Certificate no.: 7071-1998-AQ-RGC-RvA Place and date: Shanghai, 20 March 2024 Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid.

China TEL: +86 21 32799000 Zhu Hai Ming Management Representative Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid. Park, Pudong, Shanghai, China, 201203 and the sites as mentioned in the appendix accompanying this certificate has been found to conform to the Quality Management System standard: ISO 9001:2015/GB/T 19001-2016 This certificate is valid for the following scope: Design and Manufacture of Masterbatch C ertificate No: 7071-1998-AQ-RGC-RvA P lace and date: Shanghai, 30 March, 2018 Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid. TEL:+31102922689. assurance.dnvgl.com Appendix to Certificate PolyOne-Shanghai, China Locations included in the certification are as follows: Site Name Site Address Site Scope PolyOne-Shanghai, China No. 88, Guo Shou Jing Road, Z.

Franken Managing Director Registration number 1682419.2 Start date certificate 0610312025 Certificate valid until 2810212028 Date of first certificate 2810212019 Previous certificate valid until 2810212025 Date audit 0411212024 – 1211212024 Certificate for the environmental management system according to NENNENNENNEN1111ENENENEN1111ISOISOISOISO 14141414001:001:001:001:2015201520152015 including the current version of the underlying SCCM schemaincluding the current version of the underlying SCCM schemaincluding the current version of the underlying SCCM schemaincluding the current version of the underlying SCCM schema The certification body TÜV NORD Nederland hereby confirms that the certification 1682419.20610312025 took place in accordance with its certification regulations for the organisations 28102120282810212019 FiberFiberFiberFiber1111Line International B.V.Line International B.V.Line International B.V.Line International B.V. The certification is subject to annual evaluation by TÜV NORD Nederland.