METRIC MEASUREMENT People Employee Engagement Safety GPTW Certification Safety Engagement Products Sustainable Solutions Circular Economy Sustainable Solutions Sales Growth Planet Waste to Landfill Intensity Energy Intensity Kg/MT Production MWH/MT Production Our Sustainability Strategy & Employee Engagement Sustainability is integral to achieving Avient’s vision, mission and performance. Waste: Preventing, Minimizing, Eliminating 6 % Decrease in Waste to Landfill from 2019 0 Reportable Releases in Excess of Permitted Level to the Environment Since 2013 Total Waste Metric Tons Kg Waste/MT Sales Total Waste to Landfill � ����� ����� ����� ������ 2019 2020 2021 2030 Goal M e tr ic T o n s � ����� ������ ������ ������ 2019 2020 2021 70 60 50 40 30 20 10 0 58.27 54.16 53.51 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 66 Eliminating Plastic Waste Plastic is a miraculous, versatile material that positively impacts our world. https://www.avient.com/sites/default/files/2022-03/Sustainability%20ESG%20Disclosures_Animal%20Testing%20Policy.pdf https://www.avient.com/sites/default/files/2020-07/avient-audit-committee-charter-rev-10-2019.pdf https://www.avient.com/california-transparency-act-disclosure https://www.avient.com/company/policies-and-governance/code-conduct https://www.avient.com/sites/default/files/2022-03/2022%20Senior%20Financial%20Officer%20Code%20of%20Conduct%20Policy%5B75%5D.pdf https://www.avient.com/company/policies-and-governance/colormatrix-europe-limited-modern-slavery-and-human-trafficking-statement https://www.avient.com/company/policies-and-governance/colormatrix-europe-limited-modern-slavery-and-human-trafficking-statement https://www.avient.com/sites/default/files/2022-05/Compensation%20Committee%20Charter%20(REV%2010-2019).pdf https://www.avient.com/sites/default/files/2020-10/avient-conflict-minerals-policy-10.2020.pdf https://www.avient.com/sites/default/files/2021-03/corporate-governance-guidelines-2021.pdf https://www.avient.com/sites/default/files/2022-05/Avient_Environmental%20Policy_2022%20Update.pdf https://www.avient.com/sites/default/files/2021-04/eeo-updated-2020.pdf https://www.avient.com/sites/default/files/2022-03/Sustainability%20ESG%20Disclosures_Global%20Chemical%20Mgt%20Policy.pdf https://www.avient.com/company/policies-and-governance/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/sites/default/files/2020-07/avient-governance-and-corporate-responsibility-committee-charter-rev-2020.pdf https://www.avient.com/sites/default/files/2021-07/avient-human-rights-position-statement-updated-july-2021.pdf https://www.avient.com/company/policies-and-governance/polyone-corporation-privacy-statement https://www.avient.com/sites/default/files/2022-05/Avient_ProdStewardship_Policy_2022%20Update.pdf https://www.avient.com/sites/default/files/2022-05/Avient%20Quality%20Policy.pdf https://www.avient.com/sites/default/files/2021-05/avient-responsible-care-ehs-s-policies-2021.pdf https://www.avient.com/sites/default/files/2022-05/Avient_Health_And_Safety_Policy_2022%20Update.pdf https://www.avient.com/sites/default/files/2020-10/avient-security-policy-august-2020.pdf https://www.avient.com/sites/default/files/2020-10/supplier-code-of-conduct.pdf https://www.avient.com/company/policies-and-governance/code-conduct Metrics 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 83Sustainability Report | 2021 83 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 84 People Data and Metrics Category 2017 2018 2019 2020 2021 Total TRIR (#—Direct) 0.69 0.51 0.56 0.50 0.55 Total TRIR (#—Contractors) 0.00 0.00 0.00 0.00 0.00 Recordable Injuries (Total #) 43 35 36 37 55 Recordable Illnesses (Total #) 0 0 0 0 0 Total LTIR (#—Direct) 0.20 0.13 0.29 0.24 0.14 Total LTIR (#—Contractors) 0.00 0.00 0.00 0.00 0.00 Total Injuries of High Consequence (% of TRIR) 9 12 14 5 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 Safety Improvements Completed (#) NA NA NA NA 10,100 EH&S Internal Audits (#) 53 53 58 37 25 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 — %)* NA NA NA 52 56 Suppliers externally certified ISO45001 (% of surveyed) NA NA NA 44 56 *Cer tificates can be found at HYPERLINK (https://www.avient.com/company/policies-and-governance/global-iso-cer tificate-librar y) 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 85 Category 2017 2018 2019 2020 2021 ENERGY1 Total Energy (GJ) 775,091 869,390 1,523,524 1,564,854 1,671,768 Energy Intensity (MWh/MT Sales) 0.86 0.91 0.95 0.98 0.95 Renewable Electricity (%) 0 0.49 0.69 31.40 43.71 Renewable Energy (%) NA NA NA 23.33 25.68 Total Self-Generated Energy (GJ) 0 3808 4588 5001 3755 Energy Saving Activities (#) 26 41 59 74 102 Annual Savings from Energy Saving Activities (MWh) 1,507 2,601 9,882 5,212 17,420 Capital Invested in Energy Savings ($MM USD) NA NA NA 2.43 1.74 PERCENT ENERGY (%) Purchased Electricity (%) 73.18 75.11 77.53 Purchased Natural Gas (%) 25.80 21.02 20.8 Purchased Steam (%) 0.00 0.00 0.00 Purchased Diesel Fuel (%) 1.02 3.87 1.68 SOURCES OF PURCHASED ELECTRICITY (%)* Non-Renewable: Coal 41.12 Non-Renewable: Natural Gas 17.51 Non-Renewable: Other Fossil Fuels 0.26 Non-Renewable: Nuclear 9.86 Non-Renewable: Oil 1.82 Renewable: Hydro 14.79 Renewable: Wind 7.94 Renewable: Solar 3.76 Renewable: Biomass 2.53 Renewable: Geothermal 0.29 Planet Data and Metrics HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Metrics | IndexHOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2021 86 Category 2017 2018 2019 2020 2021 EMISSIONS1 Greenhouse Gas Emissions (MT Scope 1 GHG) 21,527 11,882 18,749 21,092 18,216 Greenhouse Gas Emissions (MT Scope 2 GHG) 244,927 85,112 155,086 87,776 85,892 Greenhouse Gas Emissions (MT Scope 3 GHG)2 NA 193,483 584,622 1,440,584 2,122,338 Greenhouse Gas Emissions (MT Scope 1 & 2 GHG) 275,811 96,994 173,835 108,868 104,108 Greenhouse Gas Emissions Intensity (MT 1&2 GHG/ MT Sales) 0.35 0.38 0.39 0.25 0.21 Greenhouse Gas Emissions Intensity (MT 1&2 GHG/$B Revenue) 84,674 36,723 43,666 28,778 21,605 Annual GHG Emissions Avoidance from ESA & WMP (MT) 1,548 2,508 8,377 10,184 26,490 Reportable Releases (above permitted limits) 0 0 0 0 0 EMISSIONS OF SOx/NOx/VOC/HAPS (MT) SOx 0.05 0.06 0.08 0.08 0.08 NOx 0.05 0.06 0.09 0.08 0.09 VOC 32.18 31.14 43.58 40.26 42.95 Top 4 Hazardous Air Pollutants 0.58 0.60 0.98 1.00 1.18 Particulate Matter 24.70 23.76 33.78 30.99 32.88 WASTE Total Waste (MT) 12,453 13,396 26,065 23,709 26,277 Total Waste Intensity (Kg Waste/MT Sales) 20.18 17.79 58.27 54.16 53.51 Total Waste Intensity (MT Waste/$B Revenue) 1,572 1,357 6,547 6,267 5,453 Percent of Total Waste Recycled/Beneficially Reused (%) 57.07 62.65 48.79 47.43 47.32 Percent of Total Waste Landfilled (%) 40.77 35.11 45.82 41.82 42.76 Total Waste Landfilled (MT) 5,077 4,703 11,943 9,915 11,215 Total Non-Hazardous Waste (MT) NA 12,722 24,135 21,823 24,045 Waste Minimization Projects (#) 47 41 38 59 161 Annual Diversion from Waste Minimization Projects (MT) NA 5,892 11,019 20,052 57,681 Capital Invested in Waste Minimization ($MM USD) NA NA NA 0.71 1.72 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 87 Category 2017 2018 2019 2020 2021 HAZARDOUS WASTE Hazardous Waste US & Canada (%) NA NA 1.0 1.3 0.85 Hazardous Waste Latin America (%) NA NA 6.4 6.9 11.3 Hazardous Waste Europe (%) NA NA 51.4 60.2 45.44 Hazardous Waste Asia Pacific (%) NA NA 35.6 26.4 36.07 Hazardous Waste Middle East & Africa (%) NA NA 5.6 5.2 6.35 Total Hazardous Waste (MT) NA 674.35 1,930 1,886 2,233 WATER Total Water Withdrawal (1000 m3) 662 666 1,159 1,309 1,263 Total Water Withdrawal Intensity (m3/MT Sales) 2.64 2.57 2.59 2.99 2.57 Total Wastewater Discharge (1000 m3) NA NA 691 553 594 Wastewater Recycled (% of Total) NA NA 40.38 57.75 52.97 Total Water Related NoV (#) 0 0 0 0 0 Withdrawal & Consumed from High Water Stress Areas (% of Total) NA NA 39.3 40.8 35.3 CERTIFIED ENVIRONMENTAL MANAGEMENT SYSTEMS Facilities externally certified to ISO14001/RC14001 (%)** NA NA NA 50 52 Facilities externally certified to ISO50001 (% of high energy sites)** NA NA 10 10 10 Suppliers externally certified ISO14001 (% of surveyed) NA NA NA 70 75 Suppliers externally certified to ISO50001 (% of surveyed) NA NA NA 17 19 * Estimates—does not include renewable energ y credits from Vir tual Power Purchase Agreements ** Cer tificates can be found at HERE 1 Refer to CDP Climate Change Repor t for finalized Energ y/Emissions information.

HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Goals & Metrics | Indices Sustainability Report | 2019 86 https://endplasticwaste.org/about/ People and Planet Data and Metrics Category 2016 2017 2018 2019 Total TRIR (#—Direct) 0.74 0.69 0.51 0.56 Total TRIR (#—Contractors) 0.00 0.00 0.00 0.00 Recordable Injuries (Total #) 51 43 35 36 Recordable Illnesses (Total #) 0 0 0 0 Total LTIR (#—Direct) 0.29 0.20 0.13 0.29 Total LTIR (#—Contractors) 0.00 0.00 0.00 0.00 Total Fatality Rate (#—Direct) 0.00 0.00 0.00 0.00 Total Fatality Rate (#—Contractors) 0.00 0.00 0.00 0.00 Process Safety Incident Count (#) 0 0 0 0 Process Safety Total Incident Rate (#) 0.00 0.00 0.00 0.00 Process Safety Incident Severity Rate (#) 0.00 0.00 0.00 0.00 Residual Risk Reduction (# of assessments) NA NA 13,267 7,102 Residual Risk Point Reduction (#) NA NA 1,035,177 864,997 EH&S Internal Audits (#) 40 53 53 58 Workers covered by an EH&S Management Systems (%) 100 100 100 100 Workers covered by an internally audited EH&S MS (%) 100 100 100 100 Facilities covered by an externally certified EH&S MS (%) 20 24 30 35 Transport Incidents (#—US DOT 5800/EU ADR) 0 0 0 0 Capital Invested in EH&S ($MM USD) 5.305 5.201 8.858 7.870 HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Goals & Metrics | Indices Sustainability Report | 2019 87 Category 2016 2017 2018 2019 ENERGY Total Energy (GJ) 677,579 775,091 869,390 899,679 Energy Intensity (MWh/MT Production) 0.99 0.86 0.91 0.85 Renewable Energy (%) 0 0 0.49 0.69 Total Self-Generated Energy (GJ) 0 0 3808 4588 Energy Saving Activities (#) NA 26 45 60 Cumulative Annual Savings from Energy Saving Activities (MWh) 0 1,507 2,609 6,879 PERCENT ENERGY (%) Purchased Electricity 73.18 Purchased Natural Gas 25.80 Purchased Steam 0.00 Purchased Diesel Fuel 1.02 EMISSIONS Greenhouse Gas Emissions (MT Scope 1 GHG) 33,362 21,527 11,882 12,767 Greenhouse Gas Emissions (MT Scope 2 GHG) 238,100 244,927 85,112 87,427 Greenhouse Gas Emissions (MT Scope 3 GHG) NA NA 193,483 584,622 Greenhouse Gas Emissions (MT Scope 1 & 2 GHG) 254,995 275,811 96,994 100,194 Greenhouse Gas Emissions Intensity (MT 1&2 GHG/ MT Production) 0.43 0.35 0.38 0.34 Greenhouse Gas Emissions Intensity (MT 1&2 GHG/$B Revenue) 76,346 84,674 36,723 37,872 Cumulative Annual GHG Emissions Avoidance from ESAs (MT) 0 1,548 2,609 6,879 Reportable Releases (Above Permitted Limits) 0 0 0 0 People and Planet Data and Metrics Category 2016 2017 2018 2019 EMISSIONS OF SOx/NOx/VOC/HAPS SOx (MT) 0.04 0.05 0.06 0.06 NOx (MT) 0.05 0.05 0.06 0.06 VOC (MT) 30.28 32.18 31.14 29.22 Top 4 Hazardous Air Pollutants (MT) 0.49 0.58 0.60 0.55 Particulate Matter (MT) 23.29 24.70 23.76 22.21 WASTE Total Waste (MT) 11,234 12,453 13,396 13,273 Total Waste Intensity (Kg Waste/MT Production) 17.23 20.18 17.79 19.70 Total Waste Intensity (MT Waste/$B Revenue) 993 1,572 1,357 2,008 Percent of Total Waste Recycled/ Beneficially Reused (%) 67.31 57.07 62.65 51.87 Percent of Total Waste Landfilled (%) 29.55 40.77 35.11 43.88 Total Hazardous Waste (MT) NA NA 674.35 730.26 Waste Minimization Projects (#) NA 47 44 68 WATER Total Water Withdrawal (1000 m3) 498 662 666 565 Total Water Withdrawal Intensity (m3/MT Production) 2.58 2.64 2.57 1.91 Total Water Related NoV (#) 0 0 0 0 Withdrawal & Consumed from High Water Stress Areas (% of Total) NA NA NA 22.1 HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Goals & Metrics | Indices Sustainability Report | 2019 88 INDICE S HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Goals & Metrics | Indices Sustainability Report | 2019 89Sustainability Report | 2019 89 GRI Standards Content Index GRI Standard Disclosure Title Avient Disclosures General Disclosures Organizational Profile 102–1 Name of the organization About Avient—Who We Are 102–2 Activities, brands, products, and services Products—All Sections Avient products are not banned in any market. 102–3 Location of headquarters PolyOne 2019 Annual Report—Form 10-K Cover Page 102–4 Location of operations About Avient—Where We Are: Global Locations PolyOne 2019 Annual Report—Form 10-K Page 11 102–5 Ownership and legal form PolyOne 2019 Annual Report—Form 10-K Cover Page 102–6 Markets served About Avient—Communities Counting on Avient 102–7 Scale of the organization Performance—Performance Overview PolyOne 2019 Annual Report—Form 10-K Pages 2–10 & 15 102–8 Information on employees and other workers People—All Sections PolyOne 2019 Annual Report—Form 10-K Pages 2 & 4 Currently we report on the number of associates.

HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Goals & Metrics | Indices Sustainability Report | 2019 86 https://endplasticwaste.org/about/ People and Planet Data and Metrics Category 2016 2017 2018 2019 Total TRIR (#—Direct) 0.74 0.69 0.51 0.56 Total TRIR (#—Contractors) 0.00 0.00 0.00 0.00 Recordable Injuries (Total #) 51 43 35 36 Recordable Illnesses (Total #) 0 0 0 0 Total LTIR (#—Direct) 0.29 0.20 0.13 0.29 Total LTIR (#—Contractors) 0.00 0.00 0.00 0.00 Total Fatality Rate (#—Direct) 0.00 0.00 0.00 0.00 Total Fatality Rate (#—Contractors) 0.00 0.00 0.00 0.00 Process Safety Incident Count (#) 0 0 0 0 Process Safety Total Incident Rate (#) 0.00 0.00 0.00 0.00 Process Safety Incident Severity Rate (#) 0.00 0.00 0.00 0.00 Residual Risk Reduction (# of assessments) NA NA 13,267 7,102 Residual Risk Point Reduction (#) NA NA 1,035,177 864,997 EH&S Internal Audits (#) 40 53 53 58 Workers covered by an EH&S Management Systems (%) 100 100 100 100 Workers covered by an internally audited EH&S MS (%) 100 100 100 100 Facilities covered by an externally certified EH&S MS (%) 20 24 30 35 Transport Incidents (#—US DOT 5800/EU ADR) 0 0 0 0 Capital Invested in EH&S ($MM USD) 5.305 5.201 8.858 7.870 HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Goals & Metrics | Indices Sustainability Report | 2019 87 Category 2016 2017 2018 2019 ENERGY Total Energy (GJ) 677,579 775,091 869,390 899,679 Energy Intensity (MWh/MT Production) 0.99 0.86 0.91 0.85 Renewable Energy (%) 0 0 0.49 0.69 Total Self-Generated Energy (GJ) 0 0 3808 4588 Energy Saving Activities (#) NA 26 45 60 Cumulative Annual Savings from Energy Saving Activities (MWh) 0 1,507 2,609 6,879 PERCENT ENERGY (%) Purchased Electricity 73.18 Purchased Natural Gas 25.80 Purchased Steam 0.00 Purchased Diesel Fuel 1.02 EMISSIONS Greenhouse Gas Emissions (MT Scope 1 GHG) 33,362 21,527 11,882 12,767 Greenhouse Gas Emissions (MT Scope 2 GHG) 238,100 244,927 85,112 87,427 Greenhouse Gas Emissions (MT Scope 3 GHG) NA NA 193,483 584,622 Greenhouse Gas Emissions (MT Scope 1 & 2 GHG) 254,995 275,811 96,994 100,194 Greenhouse Gas Emissions Intensity (MT 1&2 GHG/ MT Production) 0.43 0.35 0.38 0.34 Greenhouse Gas Emissions Intensity (MT 1&2 GHG/$B Revenue) 76,346 84,674 36,723 37,872 Cumulative Annual GHG Emissions Avoidance from ESAs (MT) 0 1,548 2,609 6,879 Reportable Releases (Above Permitted Limits) 0 0 0 0 People and Planet Data and Metrics Category 2016 2017 2018 2019 EMISSIONS OF SOx/NOx/VOC/HAPS SOx (MT) 0.04 0.05 0.06 0.06 NOx (MT) 0.05 0.05 0.06 0.06 VOC (MT) 30.28 32.18 31.14 29.22 Top 4 Hazardous Air Pollutants (MT) 0.49 0.58 0.60 0.55 Particulate Matter (MT) 23.29 24.70 23.76 22.21 WASTE Total Waste (MT) 11,234 12,453 13,396 13,273 Total Waste Intensity (Kg Waste/MT Production) 17.23 20.18 17.79 19.70 Total Waste Intensity (MT Waste/$B Revenue) 993 1,572 1,357 2,008 Percent of Total Waste Recycled/ Beneficially Reused (%) 67.31 57.07 62.65 51.87 Percent of Total Waste Landfilled (%) 29.55 40.77 35.11 43.88 Total Hazardous Waste (MT) NA NA 674.35 730.26 Waste Minimization Projects (#) NA 47 44 68 WATER Total Water Withdrawal (1000 m3) 498 662 666 565 Total Water Withdrawal Intensity (m3/MT Production) 2.58 2.64 2.57 1.91 Total Water Related NoV (#) 0 0 0 0 Withdrawal & Consumed from High Water Stress Areas (% of Total) NA NA NA 22.1 HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Goals & Metrics | Indices Sustainability Report | 2019 88 INDICE S HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Goals & Metrics | Indices Sustainability Report | 2019 89Sustainability Report | 2019 89 GRI Standards Content Index GRI Standard Disclosure Title Avient Disclosures General Disclosures Organizational Profile 102–1 Name of the organization About Avient—Who We Are 102–2 Activities, brands, products, and services Products—All Sections Avient products are not banned in any market. 102–3 Location of headquarters PolyOne 2019 Annual Report—Form 10-K Cover Page 102–4 Location of operations About Avient—Where We Are: Global Locations PolyOne 2019 Annual Report—Form 10-K Page 11 102–5 Ownership and legal form PolyOne 2019 Annual Report—Form 10-K Cover Page 102–6 Markets served About Avient—Communities Counting on Avient 102–7 Scale of the organization Performance—Performance Overview PolyOne 2019 Annual Report—Form 10-K Pages 2–10 & 15 102–8 Information on employees and other workers People—All Sections PolyOne 2019 Annual Report—Form 10-K Pages 2 & 4 Currently we report on the number of associates.

202024.v1.2.Revised.4-16-24.Final_.pdf https://www.avient.com/company/policies-and-governance-0/avients-human-rights-policy https://www.avient.com/company/sustainability/sustainability-report/products/no-surprises-pledge https://www.avient.com/sites/default/files/2024-06/Position%20on%20Biodiversity.pdf https://www.avient.com/sites/default/files/2024-06/Position%20on%20Biodiversity.pdf 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_Health_And_Safety_Policy_Dec_18_2023.pdf https://www.avient.com/sites/default/files/2023-12/Avient_SecurityPolicy_Dec_18_2023.pdf https://www.avient.com/company/policies-and-governance-0/supplier-code-conduct METRICS HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Per formance | 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 *Cer tificates can be found at (https://www.avient.com/company/policies-and-governance/global-iso-cer tificate-librar y) HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Per formance | Metrics | Index Sustainability Report | 2023 75 https://www.avient.com/company/policies-and-governance/global-iso-certificate-library Planet Data and Metrics Category 2019* 2020* 2021* 2022* 2023 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 (continues on next page) HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Per formance | Metrics | Index Sustainability Report | 2023 76 (continues on next page) Category 2019* 2020* 2021* 2022* 2023 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 | Per formance | Metrics | Index Sustainability Report | 2023 77 Category 2019* 2020* 2021* 2022* 2023 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 per formance of APM acquisition **2019 baseline data revised to account for acquisition pro-forma per formance and divestitures (1) Refer to CDP Climate Change Repor t for finalized Energ y/Emissions information https://www.avient.com/company/sustainability/sustainability-repor t/repor ting/cdp-climate-change-repor t (2) Estimates.

202024.v1.2.Revised.4-16-24.Final_.pdf https://www.avient.com/company/policies-and-governance-0/avients-human-rights-policy 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-0/avients-position-water-stewardship 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_Health_And_Safety_Policy_Dec_18_2023.pdf https://www.avient.com/sites/default/files/2023-12/Avient_SecurityPolicy_Dec_18_2023.pdf https://www.avient.com/company/policies-and-governance-0/supplier-code-conduct METRICS HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Per formance | 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 *Cer tificates can be found at (https://www.avient.com/company/policies-and-governance/global-iso-cer tificate-librar y) HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Per formance | Metrics | Index Sustainability Report | 2023 75 https://www.avient.com/company/policies-and-governance/global-iso-certificate-library Planet Data and Metrics Category 2019* 2020* 2021* 2022* 2023 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 (continues on next page) HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Per formance | Metrics | Index Sustainability Report | 2023 76 (continues on next page) Category 2019* 2020* 2021* 2022* 2023 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 | Per formance | Metrics | Index Sustainability Report | 2023 77 Category 2019* 2020* 2021* 2022* 2023 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 per formance of APM acquisition **2019 baseline data revised to account for acquisition pro-forma per formance and divestitures (1) Refer to CDP Climate Change Repor t for finalized Energ y/Emissions information https://www.avient.com/company/sustainability/sustainability-repor t/repor ting/cdp-climate-change-repor t (2) Estimates.

The environmental metrics considered both (1) waste to landfill intensity (Kg / MT Sales); and (2) weather adjusted energy intensity (MWh / MT Sales).

202024.v1.2.Revised.4-16-24.Final_.pdf https://www.avient.com/company/policies-and-governance-0/avients-human-rights-policy 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-0/avients-position-water-stewardship 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_Health_And_Safety_Policy_Dec_18_2023.pdf https://www.avient.com/sites/default/files/2023-12/Avient_SecurityPolicy_Dec_18_2023.pdf https://www.avient.com/company/policies-and-governance-0/supplier-code-conduct METRICS HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Per formance | 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 *Cer tificates can be found at (https://www.avient.com/company/policies-and-governance/global-iso-cer tificate-librar y) HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Per formance | Metrics | Index Sustainability Report | 2023 75 https://www.avient.com/company/policies-and-governance/global-iso-certificate-library Planet Data and Metrics Category 2019* 2020* 2021* 2022* 2023 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 (continues on next page) HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Per formance | Metrics | Index Sustainability Report | 2023 76 (continues on next page) Category 2019* 2020* 2021* 2022* 2023 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 | Per formance | Metrics | Index Sustainability Report | 2023 77 Category 2019* 2020* 2021* 2022* 2023 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 per formance of APM acquisition **2019 baseline data revised to account for acquisition pro-forma per formance and divestitures (1) Refer to CDP Climate Change Repor t for finalized Energ y/Emissions information https://www.avient.com/company/sustainability/sustainability-repor t/repor ting/cdp-climate-change-repor t (2) Estimates.

The “Planet” metric considered both (1) waste to landfill intensity (Kg / MT Sales); and (2) weather adjusted energy intensity.

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 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 Supplier Code of Conduct HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2022 82 https://www.avient.com/sites/default/files/2022-03/Sustainability%20ESG%20Disclosures_Animal%20Testing%20Policy.pdf https://www.avient.com/sites/default/files/2020-07/avient-audit-committee-charter-rev-10-2019.pdf https://www.avient.com/california-transparency-act-disclosure https://www.avient.com/company/policies-and-governance/code-conduct https://www.avient.com/sites/default/files/2022-03/2022%20Senior%20Financial%20Officer%20Code%20of%20Conduct%20Policy%5B75%5D.pdf https://www.avient.com/company/policies-and-governance/colormatrix-europe-limited-modern-slavery-and-human-trafficking-statement https://www.avient.com/sites/default/files/2022-05/Compensation%20Committee%20Charter%20(REV%2010-2019).pdf https://www.avient.com/sites/default/files/2020-10/avient-conflict-minerals-policy-10.2020.pdf https://www.avient.com/sites/default/files/2021-03/corporate-governance-guidelines-2021.pdf https://www.avient.com/sites/default/files/2022-05/Avient_Environmental%20Policy_2022%20Update.pdf https://www.avient.com/sites/default/files/2021-04/eeo-updated-2020.pdf https://www.avient.com/sites/default/files/2022-03/Sustainability%20ESG%20Disclosures_Global%20Chemical%20Mgt%20Policy.pdf https://www.avient.com/company/policies-and-governance/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/sites/default/files/2020-07/avient-governance-and-corporate-responsibility-committee-charter-rev-2020.pdf https://www.avient.com/sites/default/files/2021-07/avient-human-rights-position-statement-updated-july-2021.pdf https://www.avient.com/company/policies-and-governance/polyone-corporation-privacy-statement https://www.avient.com/sites/default/files/2022-05/Avient_ProdStewardship_Policy_2022%20Update.pdf https://www.avient.com/sites/default/files/2022-05/Avient%20Quality%20Policy.pdf https://www.avient.com/sites/default/files/2021-05/avient-responsible-care-ehs-s-policies-2021.pdf https://www.avient.com/sites/default/files/2022-05/Avient_Health_And_Safety_Policy_2022%20Update.pdf https://www.avient.com/sites/default/files/2020-10/avient-security-policy-august-2020.pdf https://www.avient.com/company/policies-and-governance-0/supplier-code-conduct METRICS Aldringen, Belgium by Lavinia Bocan HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Per formance | Metrics | IndexHOME | Contents | Message from the CEO | About Us | People | Products | Planet | Per formance | Metrics | Index Sustainability Report | 2022 83Sustainability Report | 2022 83 People Data and Metrics Category 2019 2020 2021 2022 Total TRIR (#—Direct) 0.56 0.50 0.55 0.51 Total TRIR (#—Contractors) 0.00 0.00 0.00 0.00 Recordable Injuries (Total #) 36 37 55 57 Recordable Illnesses (Total #) 0 0 0 0 Total LTIR (#—Direct) 0.29 0.24 0.14 0.15 Total LTIR (#—Contractors) 0.00 0.00 0.00 0.00 Total Injuries of High Consequence (% of TRIR) 14 5 2 0 Total Fatality Rate (#—Direct) 0.00 0.00 0.00 0.00 Total Fatality Rate (#—Contractors) 0.00 0.00 0.00 0.00 Process Safety Incident Count (#) 0 0 0 0 Process Safety Total Incident Rate (#) 0.00 0.00 0.00 0.00 Process Safety Incident Severity Rate (#) 0.00 0.00 0.00 0.00 Transport Incidents (#—US DOT 5800/EU ADR) 0 0 0 0 Safety Improvements Completed (#) N/A N/A 10,100 14,658 EH&S Internal Audits (#) 58 37 25 40 Workers covered by an EH&S Management Systems (%) 100 100 100 100 Workers covered by an internally audited EH&S MS (%) 100 100 100 100 Facilities externally certified ISO45001 (or equivalent — %)* N/A 52 56 54 Suppliers externally certified ISO45001 (% of surveyed) N/A 44 56 53 *Cer tificates can be found at (https://www.avient.com/company/policies-and-governance/global-iso-cer tificate-librar y) HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Per formance | Metrics | Index Sustainability Report | 2022 84 https://www.avient.com/company/policies-and-governance/global-iso-certificate-library Planet Data and Metrics Category 2019* 2020* 2021* 2022* ENERGY1 Total Energy (GJ) 2,377,860 2,242,291 2,361,107 2,265,482 Energy Intensity (GJ/MT Sales) 5.09 5.04 4.77 5.05 Renewable Electricity (MWh)** 104,880.63 122,505.22 174,701.68 232,488.43 Electric Power (MWh) 461,426.13 439,773.23 460,693.35 439,215.11 Renewable Electricity (%) 23 28 38 53 Renewable Energy (%) 16 20 27 37 Total Self-Generated Energy (GJ) 11,845 14,590 11,461 12,019 Energy Saving Activities (#) 59 74 102 129 Annual Savings from Energy Saving Activities (GJ) 35,573 19,470 72,845 439,347 Capital Invested in Energy Savings ($MM USD) 1.97 2.43 1.74 5.05 PURCHASED ENERGY (%) Purchased Electricity (%) 49.74 51.70 51.05 69.79 Purchased Natural Gas (%) 12.89 14.11 13.46 29.45 Purchased Steam (%) 0.00 0.00 0.00 0.00 Purchased Diesel Fuel (%) 0.87 0.95 1.12 0.76 SOURCES OF PURCHASED ELECTRICITY (%)2 Non-Renewable: Coal 46.72 45.53 41.12 40.04 Non-Renewable: Natural Gas 33.69 36.12 17.51 17.41 Non-Renewable: Other Fossil Fuels 0.00 0.00 0.26 0.21 Non-Renewable: Nuclear 11.95 11.37 9.86 9.01 Non-Renewable: Oil 2.16 1.60 1.82 1.70 Renewable: Hydro 3.24 2.23 14.79 15.22 Renewable: Wind 0.70 0.88 7.94 9.02 Renewable: Solar 1.48 2.20 3.76 4.67 Renewable: Biomass 0.06 0.07 2.53 2.44 Renewable: Geothermal 0.00 0.00 0.29 0.28 (continues on next page) HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Per formance | Metrics | Index Sustainability Report | 2022 85 Category 2019* 2020* 2021* 2022* EMISSIONS1 Greenhouse Gas Emissions (MT Scope 1 GHG)** 36,680 39,023 36,147 34,792 Greenhouse Gas Emissions (MT Scope 2 GHG)** 169,789 102,479 100,595 99,465 Greenhouse Gas Emissions (MT Scope 3 GHG)3 584,622 1,440,584 2,122,338 6,421,128 Greenhouse Gas Emissions (MT Scope 1 & 2 GHG)** 206,469 141,502 136,742 134,257 Greenhouse Gas Emissions Intensity (MT 1&2 GHG/ MT Sales) 0.44 0.32 0.28 0.30 Greenhouse Gas Emissions Intensity (MT 1&2 GHG/ B Revenue) 51,864 63,886 41,249 39,524 Annual GHG Emissions Avoidance from ESA & WMP (MT) 8,378 10,235 33,631 115,099 Reportable Releases—above permitted limits (#) 0 0 0 0 EMISSIONS OF SOX/NOX/VOC/HAPS (MT) SOx 0.14 0.13 0.13 0.25 NOx 14.74 10.85 11.77 12.96 VOC 695.40 659.43 648.17 563.96 Top 4 Hazardous Air Pollutants 0.98 1.00 1.18 6.96 Particulate Matter 33.78 30.99 32.88 28.02 WASTE Total Waste (MT) 31,087 29,783 33,090 32,267 Total Waste Intensity (Kg Waste/MT Sales) 66.60 66.92 66.90 71.88 Total Waste Intensity (MT Waste/ B Revenue) 7,809 13,447 9,982 9,499 Percent of Total Waste Recycled/Beneficially Reused (%) 51.45 50.51 47.85 48.60 Percent of Total Waste Landfilled (%) 40.13 40.20 43.26 44.24 Total Waste Landfilled (MT)** 12,476 11,972 14,315 14,274 Total Non-Hazardous Waste (MT) 27,608 26,606 29,298 28,503 Waste Minimization Projects (#) 34 53 142 114 Annual Diversion from Waste Minimization Projects (MT) 2,087 743 3,136 8,425 Capital Invested in Waste Minimization ($MM USD) 0.00 0.33 1.48 2.68 (continues on next page) (continued from previous page) HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Per formance | Metrics | Index Sustainability Report | 2022 86 Category 2019* 2020* 2021* 2022* HAZARDOUS WASTE Hazardous Waste US & Canada (%) 29 16 19 21 Hazardous Waste Latin America (%) 5 5 6 6 Hazardous Waste Europe (%) 36 51 41 34 Hazardous Waste Asia Pacific (%) 27 25 30 36 Hazardous Waste Middle East & Africa (%) 3 3 4 3 Total Hazardous Waste (MT) 3,480 3,177 3,792 3,850 WATER Total Water Withdrawal (1000 m3) 1,356 1,801 1,796 1,738 Total Water Withdrawal Intensity (m3/MT Sales) 2.90 4.05 3.63 3.87 Total Wastewater Discharge (1000 m3) 892 1,032 1,164 1,122 Wastewater Recycled (% of Total) 34 43 35 35 Total Water Related NoV (#) 0 0 0 0 Withdrawal & Consumed from High Water Stress Areas (% of Total) 38 35 30 28 Water Minimization Projects (#) 4 6 19 19 Annual Diversion from Water Minimization Projects (1000 m3) 9 19 55 115 Capital Invested in Water Minimization ($MM USD) 0.04 0.38 0.24 0.07 CERTIFIED ENVIRONMENTAL MANAGEMENT SYSTEMS Facilities externally certified to ISO14001/RC14001 (%)4 N/A 50 52 57 Facilities externally certified to ISO50001 (# of high energy sites)4 2 2 2 2 Suppliers externally certified ISO14001 (% of surveyed) N/A 70 75 72 Suppliers externally certified to ISO50001 (% of surveyed) N/A 17 19 24 * Includes estimated full year per formance of APM acquisition ** 2019 baseline data revised to account for acquisition pro-forma per formance and divestitures 1 Refer to CDP Climate Change Repor t for finalized Energ y/Emissions information at https://www.avient.com/company/sustainability/sustainability-repor t/repor ting/cdp-climate-change-repor t 2 Estimates.

Certificates can be found at: https://www.avient.com/company/policies-and-governance/global-iso-certificate-librar y HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2020 83 https://www.avient.com/company/policies-and-governance/global-iso-certificate-library Category 2016 2017 2018 2019* 2020* ENERGY 1 Total Energy (GJ) 677,579 775,091 869,390 1,523,524 1,547,647 Energy Intensity (MWh/MT Production) 0.99 0.86 0.91 0.95 0.98 Renewable Electricity (%) 0 0 0.49 0.69 31 Total Self-Generated Energy (GJ) 0 0 3808 4588 5001 Energy Saving Activities (#) NA 26 45 60 74 Annual Savings from Energy Saving Activities (Cumulative MWh) 0 1,507 4,116 11,570 16,978 PERCENT ENERGY (%) Purchased Electricity 73.18 75.11 Purchased Natural Gas 25.80 21.02 Purchased Steam 0.00 0.00 Purchased Diesel Fuel 1.02 3.87 EMISSIONS Greenhouse Gas Emissions (MT Scope 1 GHG) 33,362 21,527 11,882 18,749 21,092 Greenhouse Gas Emissions (MT Scope 2 GHG) 238,100 244,927 85,112 155,086 87,776 Greenhouse Gas Emissions (MT Scope 3 GHG)2,3 NA NA 193,483 564,359 1,440,584 Greenhouse Gas Emissions (MT Scope 1 & 2 GHG) 254,995 275,811 96,994 173,835 108,868 Greenhouse Gas Emissions Intensity (MT 1&2 GHG/ MT Production) 0.43 0.35 0.38 0.39 0.25 Greenhouse Gas Emissions Intensity (MT 1&2 GHG/$B Revenue) 76,346 84,674 36,723 43,666 28,778 Annual GHG Emissions Avoidance from ESA & WMP (Cumulative MT) 0 1,548 6,668 13,558 19,746 Reportable Releases (above permitted limits) 0 0 0 0 0 EMISSIONS OF SOx/NOx/VOC/HAPS SOx 0.04 0.05 0.06 0.08 0.08 NOx 0.05 0.05 0.06 0.09 0.08 VOC 30.28 32.18 31.14 43.58 40.26 Top 4 Hazardous Air Pollutants 0.49 0.58 0.60 0.98 1.00 Particulate Matter 23.29 24.70 23.76 33.78 30.99 People and Planet Data and Metrics HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2020 84 Category 2016 2017 2018 2019* 2020* WASTE Total Waste (MT) 11,234 12,453 13,396 26,065 23,709 Total Waste Intensity (Kg Waste/MT Production) 17.23 20.18 17.79 58.27 54.16 Total Waste Intensity (MT Waste/$B Revenue) 993 1,572 1,357 6,547 6,267 Waste Minimization Projects (#) NA 47 44 68 59 Percent of Total Waste Recycled/Beneficially Reused (%) 67.31 57.07 62.65 48.79 47.43 Percent of Total Waste Landfilled (%) 29.55 40.77 35.11 45.82 41.82 Total Waste Landfilled (MT) 3,320 5,077 4,703 11,943 9,915 Total Non-Hazardous Waste (MT) NA NA 12,722 24,135 21,823 HAZARDOUS WASTE Hazardous Waste US & Canada (%) NA NA NA 1.0 1.3 Hazardous Waste Latin America (%) NA NA NA 6.4 6.9 Hazardous Waste Europe (%) NA NA NA 51.4 60.2 Hazardous Waste Asia Pacific (%) NA NA NA 35.6 26.4 Hazardous Waste Middle East & Africa (%) NA NA NA 5.6 5.2 Total Hazardous Waste (MT) NA NA 674.35 1,930 1,886 WATER Total Water Withdrawal (1000 m3) 498 662 666 1,159 1,309 Total Water Withdrawal Intensity (m3/MT Production) 2.58 2.64 2.57 2.59 2.99 Total Wastewater Discharge (1000 m3) NA NA NA 691 553 Wastewater Recycled (% of Total) NA NA NA 40.38 57.75 Total Water Related NoV (#) 0 0 0 0 0 Withdrawal & Consumed from High Water Stress Areas (% of Total) NA NA NA 39.3 40.8 * Includes full calendar year data for Clariant Masterbatch acquired sites unless otherwise noted at the metric level. 1 Refer to CDP Climate Change Report for additional detail and finalized Energy/Emissions information. 2 Not all Scope 3 emissions from Clariant Masterbatch acquired sites available at the time of this report. 3 Year-over-year change due to increased data coverage and revised emission factors.