MALMÖ, Sweden – April 4, 2024 – Avient Corporation, a leading provider of specialized and sustainable materials solutions and services, announced today that its site in Malmö, Sweden, completed the requirements to receive the ISCC (International Sustainability and Carbon Certification) PLUS certification for its Mevopur™ Healthcare Bio-Based Polymer Solutions manufactured on site.   For more information, visit https://www.avient.com.      

About PolyOne PolyOne Corporation, with 2015 revenues of $3.4 billion, is a premier provider of specialized polymer materials, services and solutions. NOTE TO EDITORS: Based on a multi-state HAI prevalence survey, the Centers for Disease Control and Prevention (CDC) reports that an estimated 722,000 HAIs per year occur in U.S acute care hospitals (source: http://www.cdc.gov/HAI/surveillance/).

FRIEDRICHSHAFEN, Germany – October 9, 2023 – Avient Corporation, a leading provider of specialized and sustainable material solutions and services, today announced it is introducing a line of PTFE-free and non-halogen flame-retardant additives specifically engineered for polycarbonate and useful for electrical & electronic (E&E) products. For more information, visit https://www.avient.com. 

Microsoft Word - AvientRY 2021 CDP Verification Opinion Declaration_07-26-22r WATER RESOURCES • ENVIRONMENTAL SERVICES • HEALTH & SAFETY • CLIMATE CHANGE Apex Companies, LLC • (800) 733-2739 • www.apexcos.com VERIFICATION OPINION DECLARATION GREENHOUSE GAS EMISSIONS To: The Stakeholders of Avient Corporation Apex Companies, LLC (Apex) was engaged to conduct an independent verification of the greenhouse gas (GHG) emissions reported by Avient Corporation (Avient) for the period stated below. Energy: o Diesel Fuel Consumption: 7,268,012 kWh o Natural Gas Fuel Consumption: 90,498,342 kWh o Renewable Energy - Self Generated (solar): 252,779 kWh o Renewable Energy - Self Generated (Wind): 2,399,531 kWh o Electric Power: 339,815,274 kWh Page 2 WATER RESOURCES • ENVIRONMENTAL SERVICES • HEALTH & SAFETY • CLIMATE CHANGE Apex Companies, LLC • (800) 733-2739 • www.apexcos.com o Renewable Energy Credit (REC): 121,411,062 kWh o Renewable Power – Offsite: 27,119,749 kWh Period covered by GHG emissions verification:  January 1, 2021 to December 31, 2021 GHG Reporting Protocols against which verification was conducted:  World Resources Institute (WRI)/World Business Council for Sustainable Development (WBCSD) Greenhouse Gas Protocol, Corporate Accounting and Reporting Standard, Revised Edition (Scope 1 and 2) and the GHG Protocol Scope 2 Guidance, an amendment to the GHG Protocol Corporate Standard  WRI/WBCSD Corporate Value Chain (Scope 3) Accounting and Reporting Standard Verification Protocols used to conduct the verification:  ISO 14064-3 Second Edition 2019-04: Greenhouse gases - Part 3: Specification with guidance for the verification and validation of greenhouse gas statements  Apex’s standard procedures and guidelines for external Assurance of Sustainability Reports and International Standard on Assurance Engagements (ISAE) 3000 Revised, Assurance Engagements Other than Audits or Reviews of Historical Financial Information (effective for assurance reports dated on or after Dec. 15, 2015), issued by the International Auditing and Assurance Standards Board. Page 3 WATER RESOURCES • ENVIRONMENTAL SERVICES • HEALTH & SAFETY • CLIMATE CHANGE Apex Companies, LLC • (800) 733-2739 • www.apexcos.com Statement of independence, impartiality and competence Apex is an independent professional services company that specializes in Health, Safety, Social and Environmental management services including assurance with over 30 years history in providing these services.

Microsoft Word - Avient_RY 2022 CDP Verification Opinion Declaration_07-24-23 WATER RESOURCES • ENVIRONMENTAL SERVICES • HEALTH & SAFETY • CLIMATE CHANGE Apex Companies, LLC • (800) 733-2739 • www.apexcos.com VERIFICATION OPINION DECLARATION GREENHOUSE GAS EMISSIONS To: The Stakeholders of Avient Corporation Apex Companies, LLC (Apex) was engaged to conduct an independent verification of the greenhouse gas (GHG) emissions reported by Avient Corporation (Avient) for the period stated below. Energy: o Diesel Fuel Consumption: 4,754,671 kWh o Natural Gas Fuel Consumption: 184,415,668 kWh o Renewable Energy Consumed - Self Generated (solar): 260,378 kWh o Renewable Energy Consumed - Self Generated (Wind): 2,554,186 kWh o Grid Electricity Consumed: 436,400,546 kWh Page 2 WATER RESOURCES • ENVIRONMENTAL SERVICES • INDUSTRIAL HYGIENE • SAFETY • SUSTAINABILITY Apex Companies, LLC • (800) 733‐2739 • www.apexcos.com o Renewable Energy Credits (REC) Purchased: 100,691,000 kWh o Renewable Electricity Consumed – Offsite: 128,982,866 kWh Period covered by GHG emissions verification:  January 1, 2022 to December 31, 2022 GHG Reporting Protocols against which verification was conducted:  World Resources Institute (WRI)/World Business Council for Sustainable Development (WBCSD) Greenhouse Gas Protocol, Corporate Accounting and Reporting Standard, Revised Edition (Scope 1 and 2) and the GHG Protocol Scope 2 Guidance, an amendment to the GHG Protocol Corporate Standard  WRI/WBCSD Corporate Value Chain (Scope 3) Accounting and Reporting Standard Verification Protocols used to conduct the verification:  ISO 14064-3 Second Edition 2019-04: Greenhouse gases - Part 3: Specification with guidance for the verification and validation of greenhouse gas statements  Apex’s standard procedures and guidelines for external Assurance of Sustainability Reports and International Standard on Assurance Engagements (ISAE) 3000 Revised, Assurance Engagements Other than Audits or Reviews of Historical Financial Information (effective for assurance reports dated on or after Dec. 15, 2015), issued by the International Auditing and Assurance Standards Board. Page 3 WATER RESOURCES • ENVIRONMENTAL SERVICES • INDUSTRIAL HYGIENE • SAFETY • SUSTAINABILITY Apex Companies, LLC • (800) 733‐2739 • www.apexcos.com Statement of independence, impartiality and competence Apex is an independent professional services company that specializes in Health, Safety, Social and Environmental management services including assurance with over 30 years history in providing these services.

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