Unless otherwise stated, Adjusted EBITDA figures included in this presentation exclude the impact of special items as defined in our quarterly earnings releases.

Unless otherwise stated, Adjusted Operating Income, Adjusted EBITDA and Adjusted EPS figures included in this presentation exclude the impact of special items as defined in our quarterly earnings releases.

Unless otherwise stated, Adjusted EBITDA figures included in this presentation exclude the impact of special items as defined in our quarterly earnings releases.

Unless otherwise stated, Adjusted EBITDA figures included in this presentation exclude the impact of special items as defined in our quarterly earnings releases.

Unless otherwise stated, Adjusted Operating Income, Adjusted EBITDA and Adjusted EPS figures included in this presentation exclude the impact of special items as defined in our quarterly earnings releases.

Our global footprint offers both state-of-the-art facilities and talented commercial employees that enable quick collaboration with our customers—where they need us, when they need us. Management and monitoring of global inventory regulations and other emerging issues by our regional product stewardship experts and supported by a global digital platform ensures a quick evaluation and proactive response to potential regulatory risks. Policies & Guidelines 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 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 Sustainability Report | 2024 45Contents | About Avient | Message from the CEO | Sustainability at Avient | Enabling a Sustainable World | Preserving the Planet | Culture of Safety & Sustainability | Governance | Appendix https://www.avient.com/sites/default/files/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/company/policies-and-governance-0/code-conduct 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/2025-06/CM%20Europe%20Ltd%20Modern_Slavery_Statement_2025.pdf https://www.avient.com/sites/default/files/2025-06/CM%20Europe%20Ltd%20Modern_Slavery_Statement_2025.pdf https://www.avient.com/sites/default/files/2024-10/Compensation%20Committee%20Charter%20-%20Final.pdf https://www.avient.com/sites/default/files/2020-10/avient-conflict-minerals-policy-10.2020.pdf https://www.avient.com/sites/default/files/2024-05/3b%20-%20Corporate%20Governance%20Guidelines.Draft%20Feb.%202024.v1.2.Revised.4-16-24.Final_.pdf https://www.avient.com/sites/default/files/2023-12/Avient_Environmental%20Policy_Dec_18_2023.pdf https://www.avient.com/sites/default/files/2024-06/EEO%20Policy%20Jan%202024.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-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/sites/default/files/2024-05/3b%20-%20Corporate%20Governance%20Guidelines.Draft%20Feb.%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-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 Appendix People Data & Metrics Planet Data & Metrics Workforce Demographics Earth Day Photos GRI/SASB/TCFD Content Index Reconciliation of Non-GAAP Financial Measures Sustainability Report | 2024 46Contents | About Avient | Message from the CEO | Sustainability at Avient | Enabling a Sustainable World | Preserving the Planet | Culture of Safety & Sustainability | Governance | Appendix Category 2019 2020 2021 2022 2023 2024 Total TRIR (#—Direct) 0.56 0.50 0.55 0.51 0.58 .40 Total TRIR (#—Contractors) 0.00 0.00 0.00 0.00 2.00 1.67 Recordable Injuries (Total #) 36 37 55 57 62 44 Recordable Illnesses (Total #) 0 0 0 0 0 0 Total LTIR (#—Direct) 0.29 0.24 0.14 0.15 0.26 0.13 Total LTIR (#—Contractors) 0.00 0.00 0.00 0.00 1.50 0.00 Total Injuries of High Consequence (% of TRIR) 14 8 2 2 2 2 Total Fatality Rate (#—Direct) 0.00 0.00 0.00 0.00 0.00 0.00 Total Fatality Rate (#—Contractors) 0.00 0.00 0.00 0.00 0.00 0.00 Process Safety Incident Count (#) 0 0 0 0 0 0 Process Safety Total Incident Rate (#) 0.00 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 0.00 Transport Incidents (#—US DOT 5800/EU ADR) 0 0 0 0 0 0 Employee Safety Engagement Activities (#) N/A N/A 10,100 14,658 11,806 23,229 EH&S Internal Audits (#) 58 37 25 40 76 57 Workers covered by an EH&S Management Systems (%) 100 100 100 100 100 100 Workers covered by an internally audited EH&S MS (%) 100 100 100 100 100 100 Facilities externally certified ISO45001 (or equivalent — %)* N/A 52 56 54 51 62 Suppliers externally certified ISO45001 (% of surveyed) N/A 44 56 53 54 38 *Certificates can be found at (https://www.avient.com/company/policies-and-governance/global-iso-certificate-library) People Data and Metrics Sustainability Report | 2024 47Contents | About Avient | Message from the CEO | Sustainability at Avient | Enabling a Sustainable World | Preserving the Planet | Culture of Safety & Sustainability | Governance | Appendix https://www.avient.com/company/policies-and-governance/global-iso-certificate-library Planet Data and Metrics Category 2019* 2020* 2021* 2022* 2023 2024 Energy1 Total Energy (GJ) 2,377,860 2,242,291 2,361,107 2,265,482 2,144,770 2,217,903 Energy Intensity (GJ/MT Sales) 5.09 5.04 4.77 5.05 5.63 5.61 Renewable Electricity (MWh)** 104,880.63 122,505.22 174,701.68 232,488.43 253,894.78 259,622.57 Electric Power (MWh) 461,426.13 439,773.23 460,693.35 439,215.11 409,650.68 424,609.88 Renewable Electricity (%) 23 28 38 53 62 61 Renewable Energy (%) 16 20 27 37 43 42 Total Self-Generated Energy (GJ) 11,845 14,590 11,461 12,019 15,710 13,490 Energy Saving Activities (#) 59 74 102 129 118 103 Annual Savings from Energy Saving Activities (GJ) 35,573 19,490 72,845 100,951 65,538 27,104 Capital Invested in Energy Savings ($MM USD) 1.97 2.43 1.74 5.05 3.85 3.48 Purchased Energy (%) Purchased Electricity (%) 49.74 51.70 51.05 69.79 68.76 68.92 Purchased Natural Gas (%) 12.89 14.11 13.46 29.45 30.24 30.09 Purchased Steam (%) 0.00 0.00 0.00 0.00 0.00 0.12 Purchased Diesel Fuel (%) 0.87 0.95 1.12 0.76 0.48 0.38 Sources of Purchased Electricity (%)2 Non-Renewable: Coal 46.72 45.53 41.12 40.04 39.61 38.40 Non-Renewable: Natural Gas 33.69 36.12 17.51 17.41 17.35 16.70 Non-Renewable: Other Fossil Fuels 0.00 0.00 0.26 0.21 20.00 19.00 Non-Renewable: Nuclear 11.95 11.37 9.86 9.01 8.82 8.70 Non-Renewable: Oil 2.16 1.60 1.82 1.70 1.67 1.43 Renewable: Hydro 3.24 2.23 14.79 15.22 14.07 14.24 Renewable: Wind 0.70 0.88 7.94 9.02 9.97 10.00 Renewable: Solar 1.48 2.20 3.76 4.67 5.61 7.14 Renewable: Biomass 0.06 0.07 2.53 2.44 2.37 2.41 Renewable: Geothermal 0.00 0.00 0.29 0.28 0.27 0.25 Sustainability Report | 2024 48Contents | About Avient | Message from the CEO | Sustainability at Avient | Enabling a Sustainable World | Preserving the Planet | Culture of Safety & Sustainability | Governance | Appendix Category 2019* 2020* 2021* 2022* 2023 2024 Emissions1 Greenhouse Gas Emissions (MT Scope 1 GHG)** 36,680 39,023 36,147 34,792 33,384 37,334 Greenhouse Gas Emissions (MT Scope 2 GHG)** 169,789 102,479 100,595 99,465 72,976 62,431 Greenhouse Gas Emissions (MT Scope 3 GHG)3 584,622 1,440,584 2,122,338 6,421,128 5,685,564 See CDP Greenhouse Gas Emissions (MT Scope 1 & 2 GHG)** 206,469 141,502 136,742 134,257 106,360 99,765 Greenhouse Gas Emissions Intensity (MT 1&2 GHG/ MT Sales) 0.44 0.32 0.28 0.30 0.28 0.25 Greenhouse Gas Emissions Intensity (MT 1&2 GHG/ $B Revenue) 51,864 63,886 41,249 39,524 33,840 30,792 Annual GHG Emissions Avoidance from ESA & WMA (MT) 8,880 10,809 34,705 62,406 127,991 6,588 Reportable Releases—Above Permitted Limits (#) 0 0 0 0 1 0 Emissions of SOx/NOx/VOC/HAPs (MT) SOx 0.08 0.08 0.08 0.17 0.16 0.16 NOx 14.74 10.85 11.77 12.96 13.40 10.45 VOC 695.40 659.43 648.17 563.96 669.99 452.66 Top 4 Hazardous Air Pollutants 0.98 1.00 1.18 6.96 5.98 6.79 Particulate Matter 33.78 30.99 32.88 28.02 24.12 26.43 Waste Total Waste (MT) 31,087 29,783 33,090 32,267 31,462 30,012 Total Waste Intensity (Kg Waste/MT Sales) 66.60 66.92 66.90 71.88 82.66 75.97 Total Waste Intensity (MT Waste/ $B Revenue) 7,809 13,447 9,982 9,499 10,010 9,263 Percent of Total Waste Recycled/Beneficially Reused (%) 51.45 50.51 47.85 48.60 61.06 58.95 Percent of Total Waste Landfilled (%) 40.13 40.20 43.26 44.24 34.17 35.20 Total Waste Landfilled (MT)** 12,476 11,972 14,315 14,274 10,751 10,565 Total Non-Hazardous Waste (MT) 27,608 26,606 29,298 28,503 28,318 26,125 Waste Minimization Projects (#) 34 53 142 114 84 74 Annual Diversion from Waste Minimization Projects (MT) 2,087 743 3,136 8,423 2,975 1,845 Capital Invested in Waste Minimization ($MM USD) 0.00 0.33 1.48 2.67 0.40 1.21 Landfill Free Sites (%) N/A N/A N/A N/A 47 50 Hazardous Waste Hazardous Waste US & Canada (%) 29 16 19 21 26 34 Hazardous Waste Latin America (%) 5 5 6 6 3 3 Hazardous Waste Europe (%) 36 51 41 34 36 27 Hazardous Waste Asia Pacific (%) 27 25 30 36 34 34 Hazardous Waste Middle East & Africa (%) 3 3 4 3 2 3 Total Hazardous Waste (MT) 3,480 3,177 3,792 3,850 3,173 4,169 Sustainability Report | 2024 49Contents | About Avient | Message from the CEO | Sustainability at Avient | Enabling a Sustainable World | Preserving the Planet | Culture of Safety & Sustainability | Governance | Appendix Category 2019* 2020* 2021* 2022* 2023 2024 Water & Biodiversity Total Water Withdrawal (1000 m3) 1,356 1,801 1,796 1,738 1,599 1,652 Total Water Withdrawal Intensity (m3/MT Sales) 2.90 4.05 3.63 3.87 4.20 4.18 Total Wastewater Discharge (1000 m3) 892 1,032 1,164 1,122 1,146 1,247 Wastewater Recycled (% of Total) 34 43 35 35 28 25 Total Water Related NoV (#) 0 0 0 0 3 0 Withdrawal & Consumed from High & Extremely High Water Risk Areas (% of Total) N/A N/A N/A N/A 26 37 Water Minimization Projects (#) 4 6 19 19 10 10 Annual Diversion from Water Minimization Projects (1000 m3) 9 20 55 115 284 6 Capital Invested in Water Minimization ($MM USD) 0.04 0.38 0.24 0.07 1.02 0.39 Sites in High Biodiversity Physical Risk Areas (%) N/A N/A N/A N/A 10 7 Sites in High Biodiversity Reputational Risk Areas (%) N/A N/A N/A N/A 0 4 Sites in High & Extremely High Water Risk Areas by Region US & Canada (%) N/A N/A N/A N/A 11 11 Latin America (%) N/A N/A N/A N/A 4 4 Europe (%) N/A N/A N/A N/A 6 8 Asia Pacific (%) N/A N/A N/A N/A 12 13 Middle East & Africa (%) N/A N/A N/A N/A 4 4 Certified Environmental Management Systems Facilities externally certified to ISO14001/RC14001 (%)4 N/A 50 52 57 58 52 Facilities externally certified to ISO50001 (# of high energy sites)4 2 2 2 2 3 3 Suppliers externally certified ISO14001 (% of surveyed) N/A 70 75 72 72 54 Suppliers externally certified to ISO50001 (% of surveyed) N/A 17 19 24 32 22 *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.

No statement of agreement, oral or written, made before or at the formation of the contract shall vary or modify the written terms hereof, and neither party shall claim any amendment, modification or release from any provision hereof unless such change occurs in a writing signed by the other party and specifically identifying it as an amendment to the contract. No modification or addition to the contract shall occur by the acknowledgment or acceptance by Seller of a purchase order, acknowledgment, release or other form submitted by Buyer containing additional or different terms or conditions. 17.

No statement of agreement, oral or written, made before or at the formation of the contract shall vary or modify the written terms hereof, and neither party shall claim any amendment, modification or release from any provision hereof unless such change occurs in a writing signed by the other party and specifically identifying it as an amendment to the contract. No modification or addition to the contract shall occur by the acknowledgment or acceptance by Seller of a purchase order, acknowledgment, release or other form submitted by Buyer containing additional or different terms or conditions. 19.

No statement of agreement, oral or written, made before or at the formation of the contract shall vary or modify the written terms hereof, and neither party shall claim any amendment, modification or release from any provision hereof unless such change occurs in a writing signed by the other party and specifically identifying it as an amendment to the contract. No modification or addition to the contract shall occur by the acknowledgment or acceptance by Seller of a purchase order, acknowledgment, release or other form submitted by Buyer containing additional or different terms or conditions. 20.

Unless otherwise stated, Operating Income, EBITDA and EPS figures included in this presentation are adjusted to exclude the impact of special items as defined in our quarterly earnings releases.