Our recently updated Corporate Governance Guidelines and our Committee charter furthers our commitment to maintain diversity at the highest levels of our company. To accomplish this oversight, the Board has assigned responsibilities among committees of the Board and has documented those responsibilities in committee charters. Sustainability Report | 2021 81 Sustainability Report | 2021 82 Animal Testing Policy Audit Committee Charter California Transparency in Supply Chains Act Disclosure Code of Ethics—Applicable to Avient Senior Officers ColorMatrix Europe Limited—Modern Slavery and Human Trafficking Statement Compensation Committee Charter Conflict Minerals Policy Corporate Governance Guidelines Environmental Policy Equal Employment Opportunity Global Chemical Management Global ISO Certificate Library Global Policy on Anti-Bribery and Anti-Corruption Global Policy on Antitrust Governance and Corporate Responsibility Committee Charter Position on Human Rights Privacy Policy Product Stewardship Policy Quality Policy Responsible Care Policy Safety and Health Policy Security Policy Policies & Guidelines In addition to our Code of Conduct, our corporate governance policies show our commitment to honest, ethical business practices and compliance with applicable law.

To accomplish this oversight, the Board has assigned responsibilities among committees of the Board and has documented those responsibilities in committee charters. To further its commitment to maintaining a diverse board, during any search for a new Board member, the charter for the Governance and Corporate Responsibility Committee requires the inclusion of qualified female and racially/ethnically diverse persons in the initial pool from which Director nominees are chosen. Animal Testing Policy Audit Committee Charter California Transparency in Supply Chains Act Disclosure Code of Conduct Code of Ethics—Applicable to Avient Senior Officers ColorMatrix Europe Limited—Modern Slavery and Human Trafficking Statement Compensation Committee Charter Conflict Minerals Policy Corporate Governance Guidelines Environmental Policy Equal Employment Opportunity Global ISO Certificate Library Global Policy on Anti-Bribery and Anti-Corruption Global Policy on Antitrust Governance and Corporate Responsibility Committee Charter Human Rights Policy No Surprises PledgeSM Position on Biodiversity Position on Water Stewardship Privacy Statement Product Stewardship Policy Quality Policy Responsible Care Policy Safety and Health Policy Security Policy Supplier Code of Conduct HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 73 https://www.avient.com/sites/default/files/2022-03/Sustainability%20ESG%20Disclosures_Animal%20Testing%20Policy.pdf https://www.avient.com/sites/default/files/2023-01/Avient%20Audit%20Committee%20Charter.pdf https://www.avient.com/california-transparency-act-disclosure https://www.avient.com/sites/default/files/2023-12/Senior%20Financial%20Officer%20Code%20of%20Conduct%20Policy%20%282023%29_0.pdf https://www.avient.com/sites/default/files/2024-06/CM%20Europe%20Ltd%20Modern_Slavery_Statement%20-%202024%20V4.pdf https://www.avient.com/sites/default/files/2022-07/Compensation%20Committee%20Charter%20%28Amended%20July%202022%29.pdf https://www.avient.com/sites/default/files/2020-10/avient-conflict-minerals-policy-10.2020.pdf https://www.avient.com/sites/default/files/2024-06/EEO%20Policy%20Jan%202024.pdf https://www.avient.com/company/policies-and-governance-0/global-iso-certificate-library https://www.avient.com/company/policies-and-governance/global-policy-anti-bribery-and-anti-corruption https://www.avient.com/company/policies-and-governance/global-policy-antitrust https://www.avient.com/company/sustainability/sustainability-report/products/no-surprises-pledge https://www.avient.com/company/policies-and-governance/avients-position-human-rights https://www.avient.com/company/policies-and-governance-0/avient-corporation-privacy-statement https://www.avient.com/sites/default/files/2023-12/Avient_ProdStewardship_Policy_Dec_18_2023.pdf https://www.avient.com/sites/default/files/2023-12/Avient%20Quality%20Policy%20-%20Dec%2018%202023%5B83%5D.pdf https://www.avient.com/sites/default/files/2023-12/Avient_ALL_Policies_Dec_18_2023.pdf https://www.avient.com/sites/default/files/2023-12/Avient_SecurityPolicy_Dec_18_2023.pdf METRICS HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 74 People Data and Metrics Category 2019 2020 2021 2022 2023 Total TRIR (#—Direct) 0.56 0.50 0.55 0.51 0.58 Total TRIR (#—Contractors) 0.00 0.00 0.00 0.00 2.00 Recordable Injuries (Total #) 36 37 55 57 62 Recordable Illnesses (Total #) 0 0 0 0 0 Total LTIR (#—Direct) 0.29 0.24 0.14 0.15 0.26 Total LTIR (#—Contractors) 0.00 0.00 0.00 0.00 1.50 Total Injuries of High Consequence (% of TRIR) 14 5 2 0 2 Total Fatality Rate (#—Direct) 0.00 0.00 0.00 0.00 0.00 Total Fatality Rate (#—Contractors) 0.00 0.00 0.00 0.00 0.00 Process Safety Incident Count (#) 0 0 0 0 0 Process Safety Total Incident Rate (#) 0.00 0.00 0.00 0.00 0.00 Process Safety Incident Severity Rate (#) 0.00 0.00 0.00 0.00 0.00 Transport Incidents (#—US DOT 5800/EU ADR) 0 0 0 0 0 Associate Safety Engagement Activities (#) N/A N/A 10,100 14,658 11,806 EH&S Internal Audits (#) 58 37 25 40 76 Workers covered by an EH&S Management Systems (%) 100 100 100 100 100 Workers covered by an internally audited EH&S MS (%) 100 100 100 100 100 Facilities externally certified ISO45001 (or equivalent — %)* N/A 52 56 54 51 Suppliers externally certified ISO45001 (% of surveyed) N/A 44 56 53 54 *Certificates can be found at (https://www.avient.com/company/policies-and-governance/global-iso-certificate-library) HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 75 https://www.avient.com/company/policies-and-governance/global-iso-certificate-library Planet Data and Metrics ENERGY1 Total Energy (GJ) 2,377,860 2,242,291 2,361,107 2,265,482 2,144,770 Energy Intensity (GJ/MT Sales) 5.09 5.04 4.77 5.05 5.63 Renewable Electricity (MWh)** 104,880.63 122,505.22 174,701.68 232,488.43 253,894.78 Electric Power (MWh) 461,426.13 439,773.23 460,693.35 439,215.11 409,650.68 Renewable Electricity (%) 23 28 38 53 62 Renewable Energy (%) 16 20 27 37 43 Total Self-Generated Energy (GJ) 11,845 14,590 11,461 12,019 15,710 Energy Saving Activities (#) 59 74 102 129 118 Annual Savings from Energy Saving Activities (GJ) 35,573 19,470 72,845 439,347 64,987 Capital Invested in Energy Savings ($MM USD) 1.97 2.43 1.74 5.05 3.79 PURCHASED ENERGY (%) Purchased Electricity (%) 49.74 51.70 51.05 69.79 68.76 Purchased Natural Gas (%) 12.89 14.11 13.46 29.45 30.24 Purchased Steam (%) 0.00 0.00 0.00 0.00 0.00 Purchased Diesel Fuel (%) 0.87 0.95 1.12 0.76 0.48 SOURCES OF PURCHASED ELECTRICITY (%)2 Non-Renewable: Coal 46.72 45.53 41.12 40.04 39.61 Non-Renewable: Natural Gas 33.69 36.12 17.51 17.41 17.35 Non-Renewable: Other Fossil Fuels 0.00 0.00 0.26 0.21 20.00 Non-Renewable: Nuclear 11.95 11.37 9.86 9.01 8.82 Non-Renewable: Oil 2.16 1.60 1.82 1.70 1.67 Renewable: Hydro 3.24 2.23 14.79 15.22 14.07 Renewable: Wind 0.70 0.88 7.94 9.02 9.97 Renewable: Solar 1.48 2.20 3.76 4.67 5.61 Renewable: Biomass 0.06 0.07 2.53 2.44 2.37 Renewable: Geothermal 0.00 0.00 0.29 0.28 0.27 HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 76 EMISSIONS1 Greenhouse Gas Emissions (MT Scope 1 GHG)** 36,680 39,023 36,147 34,792 33,384 Greenhouse Gas Emissions (MT Scope 2 GHG)** 169,789 102,479 100,595 99,465 72,976 Greenhouse Gas Emissions (MT Scope 3 GHG)3 584,622 1,440,584 2,122,338 6,421,128 See CDP Greenhouse Gas Emissions (MT Scope 1 & 2 GHG)** 206,469 141,502 136,742 134,257 106,360 Greenhouse Gas Emissions Intensity (MT 1&2 GHG/ MT Sales) 0.44 0.32 0.28 0.30 0.28 Greenhouse Gas Emissions Intensity (MT 1&2 GHG/ $B Revenue) 51,864 63,886 41,249 39,524 33,840 Annual GHG Emissions Avoidance from ESA & WMA (MT) 8,378 10,235 33,631 115,099 127,938 Reportable Releases—above permitted limits (#) 0 0 0 0 1 EMISSIONS OF SOX/NOX/VOC/HAPS (MT) SOx 0.14 0.13 0.13 0.25 0.43 NOx 14.74 10.85 11.77 12.96 13.40 VOC 695.40 659.43 648.17 563.96 669.99 Top 4 Hazardous Air Pollutants 0.98 1.00 1.18 6.96 6.77 Particulate Matter 33.78 30.99 32.88 28.02 31.09 WASTE Total Waste (MT) 31,087 29,783 33,090 32,267 31,462 Total Waste Intensity (Kg Waste/MT Sales) 66.60 66.92 66.90 71.88 82.66 Total Waste Intensity (MT Waste/ $B Revenue) 7,809 13,447 9,982 9,499 10,010 Percent of Total Waste Recycled/Beneficially Reused (%) 51.45 50.51 47.85 48.60 61.06 Percent of Total Waste Landfilled (%) 40.13 40.20 43.26 44.24 34.17 Total Waste Landfilled (MT)** 12,476 11,972 14,315 14,274 10,751 Total Non-Hazardous Waste (MT) 27,608 26,606 29,298 28,503 28,318 Waste Minimization Projects (#) 34 53 142 114 84 Annual Diversion from Waste Minimization Projects (MT) 2,087 743 3,136 8,425 13,965 Capital Invested in Waste Minimization ($MM USD) 0.00 0.33 1.48 2.68 0.40 Landfill Free Sites (%) N/A N/A N/A N/A 42 HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 77 HAZARDOUS WASTE Hazardous Waste US & Canada (%) 29 16 19 21 26 Hazardous Waste Latin America (%) 5 5 6 6 3 Hazardous Waste Europe (%) 36 51 41 34 36 Hazardous Waste Asia Pacific (%) 27 25 30 36 34 Hazardous Waste Middle East & Africa (%) 3 3 4 3 2 Total Hazardous Waste (MT) 3,480 3,177 3,792 3,850 3,173 WATER Total Water Withdrawal (1000 m3) 1,356 1,801 1,796 1,738 1,599 Total Water Withdrawal Intensity (m3/MT Sales) 2.90 4.05 3.63 3.87 4.20 Total Wastewater Discharge (1000 m3) 892 1,032 1,164 1,122 1,146 Wastewater Recycled (% of Total) 34 43 35 35 28 Total Water Related NoV (#) 0 0 0 0 3 Withdrawal & Consumed from High and Extremely High Risk Areas (% of Total) 38 35 30 28 26 Water Minimization Projects (#) 4 6 19 19 10 Annual Diversion from Water Minimization Projects (1000 m3) 9 19 55 115 284 Capital Invested in Water Minimization ($MM USD) 0.04 0.38 0.24 0.07 1.02 SITES IN HIGH & EXTREMELY HIGH WATER RISK AREAS BY REGION US & Canada (%) N/A N/A N/A N/A 11 Latin America (%) N/A N/A N/A N/A 4 Europe (%) N/A N/A N/A N/A 6 Asia Pacific (%) N/A N/A N/A N/A 12 Middle East & Africa (%) N/A N/A N/A N/A 4 CERTIFIED ENVIRONMENTAL MANAGEMENT SYSTEMS Facilities externally certified to ISO14001/RC14001 (%)4 N/A 50 52 57 58 Facilities externally certified to ISO50001 (# of high energy sites)4 2 2 2 2 3 Suppliers externally certified ISO14001 (% of surveyed) N/A 70 75 72 72 Suppliers externally certified to ISO50001 (% of surveyed) N/A 17 19 24 32 *Includes estimated full year performance of APM acquisition **2019 baseline data revised to account for acquisition pro-forma performance and divestitures (1) Refer to CDP Climate Change Report for finalized Energy/Emissions information https://www.avient.com/company/sustainability/sustainability-report/reporting/cdp-climate-change-report (2) Estimates.

To accomplish this oversight, the Board has assigned responsibilities among committees of the Board and has documented those responsibilities in committee charters. To further its commitment to maintaining a diverse board, during any search for a new Board member, the charter for the Governance and Corporate Responsibility Committee requires the inclusion of qualified female and racially/ethnically diverse persons in the initial pool from which Director nominees are chosen. Animal Testing Policy Audit Committee Charter California Transparency in Supply Chains Act Disclosure Code of Conduct Code of Ethics—Applicable to Avient Senior Officers ColorMatrix Europe Limited—Modern Slavery and Human Trafficking Statement Compensation Committee Charter Conflict Minerals Policy Corporate Governance Guidelines Environmental Policy Equal Employment Opportunity Global ISO Certificate Library Global Policy on Anti-Bribery and Anti-Corruption Global Policy on Antitrust Governance and Corporate Responsibility Committee Charter Human Rights Policy No Surprises PledgeSM Position on Biodiversity Position on Water Stewardship Privacy Statement Product Stewardship Policy Quality Policy Responsible Care Policy Safety and Health Policy Security Policy Supplier Code of Conduct HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 73 https://www.avient.com/sites/default/files/2022-03/Sustainability%20ESG%20Disclosures_Animal%20Testing%20Policy.pdf https://www.avient.com/sites/default/files/2023-01/Avient%20Audit%20Committee%20Charter.pdf https://www.avient.com/california-transparency-act-disclosure https://www.avient.com/sites/default/files/2023-12/Senior%20Financial%20Officer%20Code%20of%20Conduct%20Policy%20%282023%29_0.pdf https://www.avient.com/sites/default/files/2024-06/CM%20Europe%20Ltd%20Modern_Slavery_Statement%20-%202024%20V4.pdf https://www.avient.com/sites/default/files/2022-07/Compensation%20Committee%20Charter%20%28Amended%20July%202022%29.pdf https://www.avient.com/sites/default/files/2020-10/avient-conflict-minerals-policy-10.2020.pdf https://www.avient.com/sites/default/files/2024-06/EEO%20Policy%20Jan%202024.pdf https://www.avient.com/company/policies-and-governance-0/global-iso-certificate-library https://www.avient.com/company/policies-and-governance/global-policy-anti-bribery-and-anti-corruption https://www.avient.com/company/policies-and-governance/global-policy-antitrust https://www.avient.com/company/sustainability/sustainability-report/products/no-surprises-pledge https://www.avient.com/company/policies-and-governance-0/avients-position-biodiversity https://www.avient.com/company/policies-and-governance/avients-position-human-rights https://www.avient.com/company/policies-and-governance-0/avient-corporation-privacy-statement https://www.avient.com/sites/default/files/2023-12/Avient_ProdStewardship_Policy_Dec_18_2023.pdf https://www.avient.com/sites/default/files/2023-12/Avient%20Quality%20Policy%20-%20Dec%2018%202023%5B83%5D.pdf https://www.avient.com/sites/default/files/2023-12/Avient_ALL_Policies_Dec_18_2023.pdf https://www.avient.com/sites/default/files/2023-12/Avient_SecurityPolicy_Dec_18_2023.pdf METRICS HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 74 People Data and Metrics Category 2019 2020 2021 2022 2023 Total TRIR (#—Direct) 0.56 0.50 0.55 0.51 0.58 Total TRIR (#—Contractors) 0.00 0.00 0.00 0.00 2.00 Recordable Injuries (Total #) 36 37 55 57 62 Recordable Illnesses (Total #) 0 0 0 0 0 Total LTIR (#—Direct) 0.29 0.24 0.14 0.15 0.26 Total LTIR (#—Contractors) 0.00 0.00 0.00 0.00 1.50 Total Injuries of High Consequence (% of TRIR) 14 5 2 0 2 Total Fatality Rate (#—Direct) 0.00 0.00 0.00 0.00 0.00 Total Fatality Rate (#—Contractors) 0.00 0.00 0.00 0.00 0.00 Process Safety Incident Count (#) 0 0 0 0 0 Process Safety Total Incident Rate (#) 0.00 0.00 0.00 0.00 0.00 Process Safety Incident Severity Rate (#) 0.00 0.00 0.00 0.00 0.00 Transport Incidents (#—US DOT 5800/EU ADR) 0 0 0 0 0 Associate Safety Engagement Activities (#) N/A N/A 10,100 14,658 11,806 EH&S Internal Audits (#) 58 37 25 40 76 Workers covered by an EH&S Management Systems (%) 100 100 100 100 100 Workers covered by an internally audited EH&S MS (%) 100 100 100 100 100 Facilities externally certified ISO45001 (or equivalent — %)* N/A 52 56 54 51 Suppliers externally certified ISO45001 (% of surveyed) N/A 44 56 53 54 *Certificates can be found at (https://www.avient.com/company/policies-and-governance/global-iso-certificate-library) HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 75 https://www.avient.com/company/policies-and-governance/global-iso-certificate-library Planet Data and Metrics ENERGY1 Total Energy (GJ) 2,377,860 2,242,291 2,361,107 2,265,482 2,144,770 Energy Intensity (GJ/MT Sales) 5.09 5.04 4.77 5.05 5.63 Renewable Electricity (MWh)** 104,880.63 122,505.22 174,701.68 232,488.43 253,894.78 Electric Power (MWh) 461,426.13 439,773.23 460,693.35 439,215.11 409,650.68 Renewable Electricity (%) 23 28 38 53 62 Renewable Energy (%) 16 20 27 37 43 Total Self-Generated Energy (GJ) 11,845 14,590 11,461 12,019 15,710 Energy Saving Activities (#) 59 74 102 129 118 Annual Savings from Energy Saving Activities (GJ) 35,573 19,470 72,845 439,347 64,987 Capital Invested in Energy Savings ($MM USD) 1.97 2.43 1.74 5.05 3.79 PURCHASED ENERGY (%) Purchased Electricity (%) 49.74 51.70 51.05 69.79 68.76 Purchased Natural Gas (%) 12.89 14.11 13.46 29.45 30.24 Purchased Steam (%) 0.00 0.00 0.00 0.00 0.00 Purchased Diesel Fuel (%) 0.87 0.95 1.12 0.76 0.48 SOURCES OF PURCHASED ELECTRICITY (%)2 Non-Renewable: Coal 46.72 45.53 41.12 40.04 39.61 Non-Renewable: Natural Gas 33.69 36.12 17.51 17.41 17.35 Non-Renewable: Other Fossil Fuels 0.00 0.00 0.26 0.21 20.00 Non-Renewable: Nuclear 11.95 11.37 9.86 9.01 8.82 Non-Renewable: Oil 2.16 1.60 1.82 1.70 1.67 Renewable: Hydro 3.24 2.23 14.79 15.22 14.07 Renewable: Wind 0.70 0.88 7.94 9.02 9.97 Renewable: Solar 1.48 2.20 3.76 4.67 5.61 Renewable: Biomass 0.06 0.07 2.53 2.44 2.37 Renewable: Geothermal 0.00 0.00 0.29 0.28 0.27 HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 76 EMISSIONS1 Greenhouse Gas Emissions (MT Scope 1 GHG)** 36,680 39,023 36,147 34,792 33,384 Greenhouse Gas Emissions (MT Scope 2 GHG)** 169,789 102,479 100,595 99,465 72,976 Greenhouse Gas Emissions (MT Scope 3 GHG)3 584,622 1,440,584 2,122,338 6,421,128 See CDP Greenhouse Gas Emissions (MT Scope 1 & 2 GHG)** 206,469 141,502 136,742 134,257 106,360 Greenhouse Gas Emissions Intensity (MT 1&2 GHG/ MT Sales) 0.44 0.32 0.28 0.30 0.28 Greenhouse Gas Emissions Intensity (MT 1&2 GHG/ $B Revenue) 51,864 63,886 41,249 39,524 33,840 Annual GHG Emissions Avoidance from ESA & WMA (MT) 8,378 10,235 33,631 115,099 127,938 Reportable Releases—above permitted limits (#) 0 0 0 0 1 EMISSIONS OF SOX/NOX/VOC/HAPS (MT) SOx 0.14 0.13 0.13 0.25 0.43 NOx 14.74 10.85 11.77 12.96 13.40 VOC 695.40 659.43 648.17 563.96 669.99 Top 4 Hazardous Air Pollutants 0.98 1.00 1.18 6.96 6.77 Particulate Matter 33.78 30.99 32.88 28.02 31.09 WASTE Total Waste (MT) 31,087 29,783 33,090 32,267 31,462 Total Waste Intensity (Kg Waste/MT Sales) 66.60 66.92 66.90 71.88 82.66 Total Waste Intensity (MT Waste/ $B Revenue) 7,809 13,447 9,982 9,499 10,010 Percent of Total Waste Recycled/Beneficially Reused (%) 51.45 50.51 47.85 48.60 61.06 Percent of Total Waste Landfilled (%) 40.13 40.20 43.26 44.24 34.17 Total Waste Landfilled (MT)** 12,476 11,972 14,315 14,274 10,751 Total Non-Hazardous Waste (MT) 27,608 26,606 29,298 28,503 28,318 Waste Minimization Projects (#) 34 53 142 114 84 Annual Diversion from Waste Minimization Projects (MT) 2,087 743 3,136 8,425 13,965 Capital Invested in Waste Minimization ($MM USD) 0.00 0.33 1.48 2.68 0.40 Landfill Free Sites (%) N/A N/A N/A N/A 42 HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 77 HAZARDOUS WASTE Hazardous Waste US & Canada (%) 29 16 19 21 26 Hazardous Waste Latin America (%) 5 5 6 6 3 Hazardous Waste Europe (%) 36 51 41 34 36 Hazardous Waste Asia Pacific (%) 27 25 30 36 34 Hazardous Waste Middle East & Africa (%) 3 3 4 3 2 Total Hazardous Waste (MT) 3,480 3,177 3,792 3,850 3,173 WATER Total Water Withdrawal (1000 m3) 1,356 1,801 1,796 1,738 1,599 Total Water Withdrawal Intensity (m3/MT Sales) 2.90 4.05 3.63 3.87 4.20 Total Wastewater Discharge (1000 m3) 892 1,032 1,164 1,122 1,146 Wastewater Recycled (% of Total) 34 43 35 35 28 Total Water Related NoV (#) 0 0 0 0 3 Withdrawal & Consumed from High and Extremely High Risk Areas (% of Total) 38 35 30 28 26 Water Minimization Projects (#) 4 6 19 19 10 Annual Diversion from Water Minimization Projects (1000 m3) 9 19 55 115 284 Capital Invested in Water Minimization ($MM USD) 0.04 0.38 0.24 0.07 1.02 SITES IN HIGH & EXTREMELY HIGH WATER RISK AREAS BY REGION US & Canada (%) N/A N/A N/A N/A 11 Latin America (%) N/A N/A N/A N/A 4 Europe (%) N/A N/A N/A N/A 6 Asia Pacific (%) N/A N/A N/A N/A 12 Middle East & Africa (%) N/A N/A N/A N/A 4 CERTIFIED ENVIRONMENTAL MANAGEMENT SYSTEMS Facilities externally certified to ISO14001/RC14001 (%)4 N/A 50 52 57 58 Facilities externally certified to ISO50001 (# of high energy sites)4 2 2 2 2 3 Suppliers externally certified ISO14001 (% of surveyed) N/A 70 75 72 72 Suppliers externally certified to ISO50001 (% of surveyed) N/A 17 19 24 32 *Includes estimated full year performance of APM acquisition **2019 baseline data revised to account for acquisition pro-forma performance and divestitures (1) Refer to CDP Climate Change Report for finalized Energy/Emissions information https://www.avient.com/company/sustainability/sustainability-report/reporting/cdp-climate-change-report (2) Estimates.

This name should match the name shown on the charter or other legal document creating the entity.

To accomplish this oversight, the Board has assigned responsibilities among committees of the Board and has documented those responsibilities in committee charters. To further its commitment to maintaining a diverse board, during any search for a new Board member, the charter for the Governance and Corporate Responsibility Committee requires the inclusion of qualified female and racially/ethnically diverse persons in the initial pool from which Director nominees are chosen. Animal Testing Policy Audit Committee Charter California Transparency in Supply Chains Act Disclosure Code of Conduct Code of Ethics—Applicable to Avient Senior Officers ColorMatrix Europe Limited—Modern Slavery and Human Trafficking Statement Compensation Committee Charter Conflict Minerals Policy Corporate Governance Guidelines Environmental Policy Equal Employment Opportunity Global ISO Certificate Library Global Policy on Anti-Bribery and Anti-Corruption Global Policy on Antitrust Governance and Corporate Responsibility Committee Charter Human Rights Policy No Surprises PledgeSM Position on Biodiversity Position on Water Stewardship Privacy Statement Product Stewardship Policy Quality Policy Responsible Care Policy Safety and Health Policy Security Policy Supplier Code of Conduct HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 73 https://www.avient.com/sites/default/files/2022-03/Sustainability%20ESG%20Disclosures_Animal%20Testing%20Policy.pdf https://www.avient.com/sites/default/files/2023-01/Avient%20Audit%20Committee%20Charter.pdf https://www.avient.com/california-transparency-act-disclosure https://www.avient.com/sites/default/files/2023-12/Senior%20Financial%20Officer%20Code%20of%20Conduct%20Policy%20%282023%29_0.pdf https://www.avient.com/sites/default/files/2024-06/CM%20Europe%20Ltd%20Modern_Slavery_Statement%20-%202024%20V4.pdf https://www.avient.com/sites/default/files/2022-07/Compensation%20Committee%20Charter%20%28Amended%20July%202022%29.pdf https://www.avient.com/sites/default/files/2020-10/avient-conflict-minerals-policy-10.2020.pdf https://www.avient.com/sites/default/files/2024-06/EEO%20Policy%20Jan%202024.pdf https://www.avient.com/company/policies-and-governance-0/global-iso-certificate-library https://www.avient.com/company/policies-and-governance/global-policy-anti-bribery-and-anti-corruption https://www.avient.com/company/policies-and-governance/global-policy-antitrust https://www.avient.com/company/sustainability/sustainability-report/products/no-surprises-pledge https://www.avient.com/company/policies-and-governance-0/avients-position-biodiversity https://www.avient.com/company/policies-and-governance/avients-position-human-rights https://www.avient.com/company/policies-and-governance-0/avient-corporation-privacy-statement https://www.avient.com/sites/default/files/2023-12/Avient_ProdStewardship_Policy_Dec_18_2023.pdf https://www.avient.com/sites/default/files/2023-12/Avient%20Quality%20Policy%20-%20Dec%2018%202023%5B83%5D.pdf https://www.avient.com/sites/default/files/2023-12/Avient_ALL_Policies_Dec_18_2023.pdf https://www.avient.com/sites/default/files/2023-12/Avient_SecurityPolicy_Dec_18_2023.pdf METRICS HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 74 People Data and Metrics Category 2019 2020 2021 2022 2023 Total TRIR (#—Direct) 0.56 0.50 0.55 0.51 0.58 Total TRIR (#—Contractors) 0.00 0.00 0.00 0.00 2.00 Recordable Injuries (Total #) 36 37 55 57 62 Recordable Illnesses (Total #) 0 0 0 0 0 Total LTIR (#—Direct) 0.29 0.24 0.14 0.15 0.26 Total LTIR (#—Contractors) 0.00 0.00 0.00 0.00 1.50 Total Injuries of High Consequence (% of TRIR) 14 5 2 0 2 Total Fatality Rate (#—Direct) 0.00 0.00 0.00 0.00 0.00 Total Fatality Rate (#—Contractors) 0.00 0.00 0.00 0.00 0.00 Process Safety Incident Count (#) 0 0 0 0 0 Process Safety Total Incident Rate (#) 0.00 0.00 0.00 0.00 0.00 Process Safety Incident Severity Rate (#) 0.00 0.00 0.00 0.00 0.00 Transport Incidents (#—US DOT 5800/EU ADR) 0 0 0 0 0 Associate Safety Engagement Activities (#) N/A N/A 10,100 14,658 11,806 EH&S Internal Audits (#) 58 37 25 40 76 Workers covered by an EH&S Management Systems (%) 100 100 100 100 100 Workers covered by an internally audited EH&S MS (%) 100 100 100 100 100 Facilities externally certified ISO45001 (or equivalent — %)* N/A 52 56 54 51 Suppliers externally certified ISO45001 (% of surveyed) N/A 44 56 53 54 *Certificates can be found at (https://www.avient.com/company/policies-and-governance/global-iso-certificate-library) HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 75 https://www.avient.com/company/policies-and-governance/global-iso-certificate-library Planet Data and Metrics ENERGY1 Total Energy (GJ) 2,377,860 2,242,291 2,361,107 2,265,482 2,144,770 Energy Intensity (GJ/MT Sales) 5.09 5.04 4.77 5.05 5.63 Renewable Electricity (MWh)** 104,880.63 122,505.22 174,701.68 232,488.43 253,894.78 Electric Power (MWh) 461,426.13 439,773.23 460,693.35 439,215.11 409,650.68 Renewable Electricity (%) 23 28 38 53 62 Renewable Energy (%) 16 20 27 37 43 Total Self-Generated Energy (GJ) 11,845 14,590 11,461 12,019 15,710 Energy Saving Activities (#) 59 74 102 129 118 Annual Savings from Energy Saving Activities (GJ) 35,573 19,470 72,845 439,347 64,987 Capital Invested in Energy Savings ($MM USD) 1.97 2.43 1.74 5.05 3.79 PURCHASED ENERGY (%) Purchased Electricity (%) 49.74 51.70 51.05 69.79 68.76 Purchased Natural Gas (%) 12.89 14.11 13.46 29.45 30.24 Purchased Steam (%) 0.00 0.00 0.00 0.00 0.00 Purchased Diesel Fuel (%) 0.87 0.95 1.12 0.76 0.48 SOURCES OF PURCHASED ELECTRICITY (%)2 Non-Renewable: Coal 46.72 45.53 41.12 40.04 39.61 Non-Renewable: Natural Gas 33.69 36.12 17.51 17.41 17.35 Non-Renewable: Other Fossil Fuels 0.00 0.00 0.26 0.21 20.00 Non-Renewable: Nuclear 11.95 11.37 9.86 9.01 8.82 Non-Renewable: Oil 2.16 1.60 1.82 1.70 1.67 Renewable: Hydro 3.24 2.23 14.79 15.22 14.07 Renewable: Wind 0.70 0.88 7.94 9.02 9.97 Renewable: Solar 1.48 2.20 3.76 4.67 5.61 Renewable: Biomass 0.06 0.07 2.53 2.44 2.37 Renewable: Geothermal 0.00 0.00 0.29 0.28 0.27 HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 76 EMISSIONS1 Greenhouse Gas Emissions (MT Scope 1 GHG)** 36,680 39,023 36,147 34,792 33,384 Greenhouse Gas Emissions (MT Scope 2 GHG)** 169,789 102,479 100,595 99,465 72,976 Greenhouse Gas Emissions (MT Scope 3 GHG)3 584,622 1,440,584 2,122,338 6,421,128 See CDP Greenhouse Gas Emissions (MT Scope 1 & 2 GHG)** 206,469 141,502 136,742 134,257 106,360 Greenhouse Gas Emissions Intensity (MT 1&2 GHG/ MT Sales) 0.44 0.32 0.28 0.30 0.28 Greenhouse Gas Emissions Intensity (MT 1&2 GHG/ $B Revenue) 51,864 63,886 41,249 39,524 33,840 Annual GHG Emissions Avoidance from ESA & WMA (MT) 8,378 10,235 33,631 115,099 127,938 Reportable Releases—above permitted limits (#) 0 0 0 0 1 EMISSIONS OF SOX/NOX/VOC/HAPS (MT) SOx 0.14 0.13 0.13 0.25 0.43 NOx 14.74 10.85 11.77 12.96 13.40 VOC 695.40 659.43 648.17 563.96 669.99 Top 4 Hazardous Air Pollutants 0.98 1.00 1.18 6.96 6.77 Particulate Matter 33.78 30.99 32.88 28.02 31.09 WASTE Total Waste (MT) 31,087 29,783 33,090 32,267 31,462 Total Waste Intensity (Kg Waste/MT Sales) 66.60 66.92 66.90 71.88 82.66 Total Waste Intensity (MT Waste/ $B Revenue) 7,809 13,447 9,982 9,499 10,010 Percent of Total Waste Recycled/Beneficially Reused (%) 51.45 50.51 47.85 48.60 61.06 Percent of Total Waste Landfilled (%) 40.13 40.20 43.26 44.24 34.17 Total Waste Landfilled (MT)** 12,476 11,972 14,315 14,274 10,751 Total Non-Hazardous Waste (MT) 27,608 26,606 29,298 28,503 28,318 Waste Minimization Projects (#) 34 53 142 114 84 Annual Diversion from Waste Minimization Projects (MT) 2,087 743 3,136 8,425 13,965 Capital Invested in Waste Minimization ($MM USD) 0.00 0.33 1.48 2.68 0.40 Landfill Free Sites (%) N/A N/A N/A N/A 42 HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 77 HAZARDOUS WASTE Hazardous Waste US & Canada (%) 29 16 19 21 26 Hazardous Waste Latin America (%) 5 5 6 6 3 Hazardous Waste Europe (%) 36 51 41 34 36 Hazardous Waste Asia Pacific (%) 27 25 30 36 34 Hazardous Waste Middle East & Africa (%) 3 3 4 3 2 Total Hazardous Waste (MT) 3,480 3,177 3,792 3,850 3,173 WATER Total Water Withdrawal (1000 m3) 1,356 1,801 1,796 1,738 1,599 Total Water Withdrawal Intensity (m3/MT Sales) 2.90 4.05 3.63 3.87 4.20 Total Wastewater Discharge (1000 m3) 892 1,032 1,164 1,122 1,146 Wastewater Recycled (% of Total) 34 43 35 35 28 Total Water Related NoV (#) 0 0 0 0 3 Withdrawal & Consumed from High and Extremely High Risk Areas (% of Total) 38 35 30 28 26 Water Minimization Projects (#) 4 6 19 19 10 Annual Diversion from Water Minimization Projects (1000 m3) 9 19 55 115 284 Capital Invested in Water Minimization ($MM USD) 0.04 0.38 0.24 0.07 1.02 SITES IN HIGH & EXTREMELY HIGH WATER RISK AREAS BY REGION US & Canada (%) N/A N/A N/A N/A 11 Latin America (%) N/A N/A N/A N/A 4 Europe (%) N/A N/A N/A N/A 6 Asia Pacific (%) N/A N/A N/A N/A 12 Middle East & Africa (%) N/A N/A N/A N/A 4 CERTIFIED ENVIRONMENTAL MANAGEMENT SYSTEMS Facilities externally certified to ISO14001/RC14001 (%)4 N/A 50 52 57 58 Facilities externally certified to ISO50001 (# of high energy sites)4 2 2 2 2 3 Suppliers externally certified ISO14001 (% of surveyed) N/A 70 75 72 72 Suppliers externally certified to ISO50001 (% of surveyed) N/A 17 19 24 32 *Includes estimated full year performance of APM acquisition **2019 baseline data revised to account for acquisition pro-forma performance and divestitures (1) Refer to CDP Climate Change Report for finalized Energy/Emissions information https://www.avient.com/company/sustainability/sustainability-report/reporting/cdp-climate-change-report (2) Estimates.

PolyOne abides by the principles of the Responsible Care® Global Charter. This Charter’s aim is to highlight chemical producers’ commitment to continuous improvement in the areas of environmental, health & safety, product safety, and security.

The Audit Committee’s specific responsibilities are described in its charter, which is available on the Company’s website at: www.avient.com under the heading “Investors” and the subheading “Governance.” Under its Charter, the Audit Committee has oversight of the Company’s risk management processes, including risk oversight related to cybersecurity and data protection. The primary responsibilities of each committee are summarized below and set forth in detail in each committee’s written charter, which is located on our website at www.avient.com under the heading “Investors” and the subheading “Governance.” 32 PROXY STATEMENT 2024 | Annual Meeting of Shareholders Audit Committee—Primary Responsibilities and Requirements   Meets with appropriate financial and legal personnel and independent auditors to review our corporate accounting, internal controls, financial reporting and compliance with legal and regulatory requirements MEETINGS IN 2023: 7 Exercises oversight of our independent auditors, internal auditors and financial management Appoints the independent auditors to serve as auditors in examining our corporate accounts R.E.

The Audit Committeeʼs specific responsibilities are described in its charter, which is available on the Companyʼs website at: www.avient.com under the heading “Investors” and the subheading “Governance.” Under its Charter, the Audit Committee has oversight of the Companyʼs risk management processes, including risk oversight related to cybersecurity and data protection. The primary responsibilities of each committee are summarized below and set forth in detail in each committeeʼs written charter, which is located on our website at www.avient.com under “Governance” on our investor relations page.

The Audit Committee’s specific responsibilities are described in its charter, which is available on the Company’s website at: www.avient.com under the heading “Investors” and the subheading “Governance.” Under its Charter, the Audit Committee has oversight of the Company’s risk management processes, including risk oversight related to cybersecurity and data protection. The primary responsibilities of each committee are summarized below and set forth in detail in each committee’s written charter, which is located on our website at www.avient.com under the heading “Investors” and the subheading “Governance.”

The Audit Committee’s specific responsibilities are described in its charter, which is available on the Company’s website at: www.avient.com under the heading “Investors” and the subheading “Governance.” Under its Charter, the Audit Committee has oversight of the Company’s risk management processes, including risk oversight related to cybersecurity and data protection. The primary responsibilities of each committee are summarized below and set forth in detail in each committee’s written charter, which is located on our website at www.avient.com under the heading “Investors” and the subheading “Governance.” 32 PROXY STATEMENT 2024 | Annual Meeting of Shareholders Audit Committee—Primary Responsibilities and Requirements   Meets with appropriate financial and legal personnel and independent auditors to review our corporate accounting, internal controls, financial reporting and compliance with legal and regulatory requirements MEETINGS IN 2023: 7 Exercises oversight of our independent auditors, internal auditors and financial management Appoints the independent auditors to serve as auditors in examining our corporate accounts R.E.