PSISR: 0.00 People Data and Metrics Number of transport incidents RT-CH-540a.2 Number of Transport Incidents: 0 People Data and Metrics Activity Metric Production by reportable segment RT-CH-000.A Geography: 41% US/Canada, 35% EMEA, 18% Asia, 6% Latin America End Market: 23% Packaging, 20% Consumer, 15% Industrial, 10% Transportation, 10% Building and Construction, 8% Healthcare, 7% Defense, 4% Energy, 3% Telecommunications Part of this metric was omitted due to lack of availability (production, in units, per reportable segment) Revenue: Business Segments, Geography and End Markets Sustainability Report | 2024 65Contents | About Avient | Message from the CEO | Sustainability at Avient | Enabling a Sustainable World | Preserving the Planet | Culture of Safety & Sustainability | Governance | Appendix https://www.avient.com/sites/default/files/2025-03/380605_AVIENT_2024AR_full_250325.pdf Task Force on Climate-related Financial Disclosures (TCFD) Index Recommended Disclosure 2024 Report Disclosures Governance Describe the board’s oversight of climate-related risks and opportunities Corporate Board Governance Climate Change Avient 2025 Proxy Statement—Pages 30–31, 34 2024 CDP Climate Change Response—4.1.1, 4.1.2 Describe management’s role in assessing and managing climate-related risks and opportunities Message from Avient's VP of Sustainability Environmental Health & Safety Climate Change 2024 CDP Climate Change Response—4.3, 4.3.1 Strategy Describe the climate-related risks and opportunities the organization has identified over the short, medium, and long term 2024 CDP Climate Change Response—3.1.1, 3.6,3.6.1 Describe the impact of climate-related risks and opportunities on the organization’s businesses, strategy, and financial planning 2024 CDP Climate Change Response—3.1.1, 3.6,3.6.1 Describe the resilience of the organization’s strategy, taking into consideration different climate-related scenarios, including a 2°C or lower scenario 2024 CDP Climate Change Response—3.5.4, 3.6, 3.6.1 Risk Management Describe the organization’s processes for identifying and assessing climate-related risks Climate Change 2024 CDP Climate Change Response—C2.2 Describe the organization’s processes for managing climate-related risks Climate Change 2024 CDP Climate Change Response—C2.2 Describe how processes for identifying, assessing and managing climate-related risks are integrated into the organization’s overall risk management Climate Change 2024 CDP Climate Change Response—C2.2 Metrics & Targets Disclose the metrics used by the organization to assess climate-related risks and opportunities in line with its strategy and risk management process Climate Change 2030 Sustainability Goals & Progress Disclose Scope 1, Scope 2 and, if appropriate, Scope 3 greenhouse gas emissions and the related risks People Data & Metrics Planet Data & Metrics Climate Change 2024 CDP Climate Change Response—7.5–7.8 Describe the targets used by the organization to manage climate-related risks and opportunities and performance against targets People Data & Metrics Planet Data & Metrics 2030 Sustainability Goals & Progress 2024 CDP Climate Change Response—7.54–7.54.2 Sustainability Report | 2024 66Contents | About Avient | Message from the CEO | Sustainability at Avient | Enabling a Sustainable World | Preserving the Planet | Culture of Safety & Sustainability | Governance | Appendix https://www.avient.com/sites/default/files/2024-03/2024%20Proxy%20Statement%20%28Filed%29.pdf https://www.avient.com/company/sustainability/sustainability-report/reporting/cdp-climate-change-report https://www.avient.com/company/sustainability/sustainability-report/reporting/cdp-climate-change-report https://www.avient.com/company/sustainability/sustainability-report/reporting/cdp-climate-change-report https://www.avient.com/company/sustainability/sustainability-report/reporting/cdp-climate-change-report https://www.avient.com/company/sustainability/sustainability-report/reporting/cdp-climate-change-report https://www.avient.com/company/sustainability/sustainability-report/reporting/cdp-climate-change-report https://www.avient.com/company/sustainability/sustainability-report/reporting/cdp-climate-change-report https://www.avient.com/company/sustainability/sustainability-report/reporting/cdp-climate-change-report https://www.avient.com/company/sustainability/sustainability-report/reporting/cdp-climate-change-report https://www.avient.com/company/sustainability/sustainability-report/reporting/cdp-climate-change-report Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) Below is a reconciliation of non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with GAAP.

Who We Are—Revenue by Geography and End Market HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Metrics | IndexHOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2021 100 https://www.avient.com/sites/default/files/2022-03/Sustainability%20ESG%20Disclosures_Global%20Chemical%20Mgt%20Policy.pdf https://www.avient.com/sites/default/files/2022-03/Avient%202021%20Annual%20Report.pdf Recommended Disclosure Avient Disclosures Governance Describe the board’s oversight of climate-related risks and opportunities Message from the Governance and Corporate Responsibility Committee Planet—Climate Change Avient 2022 Proxy Statement Pages 31–32, 34 2021 CDP Climate Change Response—C1.1b Describe management’s role in assessing and managing climate-related risks and opportunities Message from Avient’s VP of Sustainability People—Management Approach EH&S Planet—Climate Change 2021 CDP Climate Change Response—C1.2, C1.2a Strategy Describe the climate-related risks and opportunities the organization has identified over the short, medium, and long term 2021 CDP Climate Change Response—C2.1, C2.2C, C2.3a, C2.4a Describe the impact of climate-related risks and opportunities on the organization’s businesses, strategy, and financial planning 2021 CDP Climate Change Response—C2.5, C2.6 Describe the resilience of the organization’s strategy, taking into consideration different climate-related scenarios, including a 2°C or lower scenario 2021 CDP Climate Change Response—C3.1a, C3.1g Risk Management Describe the organization’s processes for identifying and assessing climate-related risks Planet—Climate Change 2021 CDP Climate Change Response—C2.2, C2.2a, C2.2b Describe the organization’s processes for managing climate-related risks Planet—Climate Change 2021 Climate Change Response—C2.2, C2.2d Describe how processes for identifying, assessing and managing climate-related risks are integrated into the organization’s overall risk management Planet—Climate Change 2021 CDP Climate Change Response—C2.2, C3.1c Metrics & Targets Disclose the metrics used by the organization to assess climate-related risks and opportunities in line with its strategy and risk management process Planet—Climate Change 2021 CDP Climate Change Response—C6.1, C6.2, C6.3, C6.5 Disclose Scope 1, Scope 2 and, if appropriate, Scope 3 greenhouse gas emissions and the related risks Metrics and Index—People and Planet Data and Metrics Planet—Climate Change 2021 CDP Climate Change Response—C6.1, C6.2, C6.3, C6.5 Describe the targets used by the organization to manage climate-related risks and opportunities and performance against targets Metrics and Index—People and Planet Data and Metrics 2030 Sustainability Goals 2021 CDP Climate Change Response—C4 Task Force on Climate-related Financial Disclosures (TCFD) Index HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Metrics | IndexHOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2021 101 https://www.avient.com/sites/default/files/2022-03/Avient%202022%20Proxy%20Statement.pdf Below is a reconciliation of non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with GAAP.