Senior Vice President, Global Operations and Process Improvement WOON KEAT MOH Senior Vice President, President of Color, Additives and Inks CHRISTOPHER L.

We operate in three reportable segments: (1) Color, Additives and Inks; (2) Specialty Engineered Materials; and (3) Distribution.

Garratt Senior Vice President, President, Color, Additives and Inks, EMEA Joel R. Total attainment for consolidated Avient and Color, Additives and Inks ("CAI") (applicable for Mr. Garratt Senior Vice President, President, Color, Additives and Inks, EMEA Joel R.

Garratt Senior Vice President, President, Color, Additives and Inks, EMEA Lisa K. Garratt Senior Vice President, President, Color Additives and Inks, EMEA Lisa K. Garratt, Senior Vice President, President, Color, Additives and Inks, EMEA 2021 460,385 — 213,464 212,083 734,900 364,558 1,985,390 2020 445,385 — 198,324 159,594 449,572 213,724 1,466,599 2019 435,000 — 182,932 183,115 281,743 56,590 1,139,380 Lisa K.

Garratt Senior Vice President, President, Color, Additives and Inks, EMEA Joel R. Total attainment for consolidated Avient and Color, Additives and Inks ("CAI") (applicable for Mr. Garratt Senior Vice President, President, Color, Additives and Inks, EMEA Joel R.

Garratt Senior Vice President, President, Color, Additives and Inks, EMEA Lisa K. Garratt, Senior Vice President, President, Color, Additives and Inks, EMEA 15,491 54,950 — Lisa K. Garratt Senior Vice President, President, Color Additives and Inks, EMEA Lisa K.

Specialty Inks - BU Overview Apparel Ink Management - Case Study Apple Imprints Apparel switches to non-phthalate Wilflex™ inks and uses Wilflex™ DispenseMaster™ (DM4) to streamline its ink management

Business division Scope 1 emissions (metric ton CO2e) Global Color, Additives and Inks 4,930 Global Specialty Engineered Materials 3,176 Masterbatch 5,593 Avient Corporate 4,077 Avient Distribution 651 C-CE7.4/C-CH7.4/C-CO7.4/C-EU7.4/C-MM7.4/C-OG7.4/C- ST7.4/C-TO7.4/C-TS7.4 (C-CE7.4/C-CH7.4/C-CO7.4/C-EU7.4/C-MM7.4/C-OG7.4/C-ST7.4/C-TO7.4/C-TS7.4) Break down your organization’s total gross global Scope 1 emissions by sector production activity in metric tons CO2e. Business division Scope 2, location-based (metric tons CO2e) Scope 2, market-based (metric tons CO2e) Global Color, Additives and Inks 35,964 24,542 Global Specialty Engineered Materials 39,013 18,262 Masterbatch 54,474 44,360 Avient Corporate 4,795 388 Avient Distribution 714 25 C-CE7.7/C-CH7.7/C-CO7.7/C-MM7.7/C-OG7.7/C-ST7.7/C- TO7.7/C-TS7.7 (C-CE7.7/C-CH7.7/C-CO7.7/C-MM7.7/C-OG7.7/C-ST7.7/C-TO7.7/C-TS7.7) Break down your organization’s total gross global Scope 2 emissions by sector production activity in metric tons CO2e.

Color, Additives and Inks (CAI) Specialty Engineered Materials (SEM) 1. A majority of associates have full-time contracts. 102–9 Supply chain Avient 2022 Annual Report—Form 10-K Page 5 102–10 Significant changes to the organization and its supply chain Avient 2022 Annual Report—Form 10-K Page 18 102–11 Precautionary Principle or approach Avient 2022 Annual Report—Form 10-K Page 8–12 102–12 External initiatives About Us—Who We Are Page 12 People—Security, Becoming an Even Better Place to Work Page 23, Page 40 Products—Strategic Partnerships and Alliances Page 56 102–13 Membership of associations Strategic Partnerships and Alliances Page 56 Alliance to End Plastic Waste American Composites Manufacturers Association Association of Plastic Recyclers (APR) Operation Clean Sweep PET Container Recycling Europe (PetCore) Plastics Recyclers Europe (PRE) RecyClass Responsible Mica Initiative The Microfibre Consortium (TMC) UK Plastic Pact HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2022 89 102–14 Statement from senior decision-maker 2022 Sustainability Report—Message from the CEO Page 3 102–15 Key impacts, risks, and opportunities Avient 2022 Annual Report—Form 10-K Page 7–12 Products—Innovation: Formulating for the Future Page 42 Ethics & Integrity 102–16 Values, principles, standards, and norms of behavior About Us—Who We Are Page 12 Avient 2022 Annual Report—Vision and Strategy 102–17 Mechanisms for advice and concerns about ethics Performance—Ethics Hotline and Reporting Page 78 Governance 102–18 Governance structure Performance—Board of Directors Governance Page 80 People—Management Approach: EH&S Page 19 Avient 2022 Annual Report—Form 10-K Pages 13–14 & 69 Avient 2023 Proxy Statement—Pages 14–16 102–20 Executive-level responsibility for economic, environmental, and social topics Performance—Board of Directors Governance Page 80 People—Management Approach: EH&S Page 19 People—Management Approach: Training and Development Page 24 People—Management Approach: Diversity & Inclusion Page 27 Products—Management Approach: Product Stewardship Page 51 Products—Management Approach: Supplier Collaboration Page 54 102–22 Composition of the highest governance body and its committees Avient 2022 Annual Report—Form 10-K Pages 13–14, & 69 102–23 Chair of the highest governance body Avient 2023 Proxy Statement—Page 22 102–24 Nominating and selecting the highest governance body Performance—Board of Directors Governance Page 80–81 Avient 2022 Annual Report—Form 10-K Pages 13–14 Avient 2023 Proxy Statement Page 17 102–25 Conflicts of interest Performance—Board of Directors Governance Page 80–81 102–26 Role of highest governance body in setting purpose, values, and strategy Performance—Board of Directors Governance Page 80–81 Avient 2022 Annual Report—Form 10-K Pages 13–14 & 69 Avient 2023 Proxy Statement Pages 46–48 102–27 Collective knowledge of highest governance body Performance—Board of Directors Governance Page 80–81 Avient 2023 Proxy Statement Pages 14–16 102–28 Evaluating the highest governance body's performance Performance—Board of Directors Governance Page 80–81 Avient 2023 Proxy Statement Pages 49–53 HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2022 90 Governance 102–29 Identifying and managing economic, environmental, and social impacts Performance—Board of Directors Governance Page 80–81 People—Management Approach: EH&S Page 19 102–30 Effectiveness of risk management processes Performance—Enterprise Risk Management (ERM); Board of Directors Governance; Pages 79, 80 Avient 2023 Proxy Statement Pages 46–47 102–31 Review of economic, environmental, and social topics Performance—Enterprise Risk Management (ERM); Board of Directors Governance; Pages 79, 80 Avient 2023 Proxy Statement Page 46–47, 51 102–32 Highest governance body's role in sustainability reporting Message from the Governance and Corporate Responsibility Committee Page 4 Performance—Board of Directors Governance Page 80–81 Avient 2023 Proxy Statement Page 46–47, 51 102–33 Communicating critical concerns Performance—Board of Directors Governance Page 80–81 Avient 2023 Proxy Statement Page 46–48, 51 Avient Code of Conduct 102–34 Nature and total number of critical concerns Avient 2022 Annual Report—Form 10-K Pages 56–57 102–35 Remuneration Policies Avient 2023 Proxy Statement Pages 66–72, 75–84 102–36 Process for determining remuneration Avient 2023 Proxy Statement Pages 66–72 102–37 Stakeholders' involvement in remuneration Avient 2023 Proxy Statement Pages 66–67 102–38 Annual total compensation ratio Avient 2023 Proxy Statement Page 85 Stakeholder Engagement 102–40 List of stakeholder groups About Us—Engaging with Our Stakeholders Page 9 102–41 Collective bargaining agreements Workforce Demographics—Employee Representation Page 31 102–42 Identifying and selecting stakeholders About Us—Engaging with Our Stakeholders Page 9 102–43 Approach to stakeholder engagement About Us—Engaging with Our Stakeholders Page 9 102–44 Key topics and concerns raised About Us—Engaging with Our Stakeholders Page 9 Reporting Practice 102–45 Entities included in the consolidated financial statements Avient 2022 Annual Report—Form 10-K Page 2–3 We operate in three reportable segments: (1) Color, Additives and Inks; (2) Specialty Engineered Materials; and (3) Distribution. 102–46 Defining report content and topic boundaries The information in this report applies to Avient and all owned facilities, joint ventures, and operating companies globally within the reporting period, unless otherwise stated.

Business division Scope 1 emissions (metric ton CO2e) Global Color, Additives and Inks 5,136 Avient CDP Climate Change Questionnaire 2022 Friday, July 29, 2022 72 Global Specialty Engineered Materials 3,088 Masterbatch 5,329 Avient Corporate 3,930 Avient Distribution 759 C-CE7.4/C-CH7.4/C-CO7.4/C-EU7.4/C-MM7.4/C-OG7.4/C- ST7.4/C-TO7.4/C-TS7.4 (C-CE7.4/C-CH7.4/C-CO7.4/C-EU7.4/C-MM7.4/C-OG7.4/C-ST7.4/C-TO7.4/C-TS7.4) Break down your organization’s total gross global Scope 1 emissions by sector production activity in metric tons CO2e. Business division Scope 2, location-based (metric tons CO2e) Scope 2, market-based (metric tons CO2e) Global Color, Additives and Inks 35,150 21,674 Global Specialty Engineered Materials 37,555 17,253 Avient CDP Climate Change Questionnaire 2022 Friday, July 29, 2022 74 Masterbatch 56,313 46,632 Avient Corporate 4,544 333 Avient Distribution 681 0 C-CE7.7/C-CH7.7/C-CO7.7/C-MM7.7/C-OG7.7/C-ST7.7/C- TO7.7/C-TS7.7 (C-CE7.7/C-CH7.7/C-CO7.7/C-MM7.7/C-OG7.7/C-ST7.7/C-TO7.7/C-TS7.7) Break down your organization’s total gross global Scope 2 emissions by sector production activity in metric tons CO2e.