Avient’s chief operating decision maker uses these financial measures to monitor and evaluate the ongoing performance of Avient and each business segment and to allocate resources. For the same reasons, Avient is unable to address the probable significance of the unavailable information. Avient reflects 2023 adjusted EBITDA guidance of $500M and estimated run-rate CAPEX of $110M. 2023E (%) 27 78 89 83 80 78 74 86 79 76 67 66 55 50 (39) Av ie nt KW R FU L PP G AV Y R PM FM C C E EC L AS H H XL H U N EM N SC L Avient Specialty Formulators Other Specialty / Chemical Companies MULTIPLE EXPANSION Source: Peer data per Bloomberg as of December 29, 2023 Note: Avient reflects 2023 adjusted EBITDA guidance of $500M and closing share price of $41.57.

Avient CDP Climate Change Questionnaire 2022 Friday, July 29, 2022 4 Row 1 Bulk organic chemicals Bulk inorganic chemicals Other chemicals Other, please specify Polymer Compounding C0.8 (C0.8) Does your organization have an ISIN code or another unique identifier (e.g., Ticker, CUSIP, etc.)? Consumption of fuel (excluding feedstocks) Heating value HHV (higher heating value) MWh consumed from renewable sources inside chemical sector boundary 0 MWh consumed from non-renewable sources inside chemical sector boundary (excluding recovered waste heat/gases) 71,892 Avient CDP Climate Change Questionnaire 2022 Friday, July 29, 2022 78 MWh consumed from waste heat/gases recovered from processes using fuel feedstocks inside chemical sector boundary 0 Total MWh (renewable + non-renewable + MWh from recovered waste heat/gases) consumed inside chemical sector boundary 71,892 Consumption of purchased or acquired electricity MWh consumed from renewable sources inside chemical sector boundary 135,907 MWh consumed from non-renewable sources inside chemical sector boundary (excluding recovered waste heat/gases) 189,681 MWh consumed from waste heat/gases recovered from processes using fuel feedstocks inside chemical sector boundary 0 Total MWh (renewable + non-renewable + MWh from recovered waste heat/gases) consumed inside chemical sector boundary 325,588 Consumption of self-generated non-fuel renewable energy MWh consumed from renewable sources inside chemical sector boundary 2,652 MWh consumed from non-renewable sources inside chemical sector boundary (excluding recovered waste heat/gases) 0 MWh consumed from waste heat/gases recovered from processes using fuel feedstocks inside chemical sector boundary 0 Total MWh (renewable + non-renewable + MWh from recovered waste heat/gases) consumed inside chemical sector boundary 2,652 Total energy consumption MWh consumed from renewable sources inside chemical sector boundary 138,560 MWh consumed from non-renewable sources inside chemical sector boundary (excluding recovered waste heat/gases) 261,573 Avient CDP Climate Change Questionnaire 2022 Friday, July 29, 2022 79 MWh consumed from waste heat/gases recovered from processes using fuel feedstocks inside chemical sector boundary 0 Total MWh (renewable + non-renewable + MWh from recovered waste heat/gases) consumed inside chemical sector boundary 400,132 C8.2b (C8.2b) Select the applications of your organization’s consumption of fuel. Electricity Total gross generation inside chemicals sector boundary (MWh) 2,652 Generation that is consumed inside chemicals sector boundary (MWh) 2,652 Generation from renewable sources inside chemical sector boundary (MWh) 2,652 Generation from waste heat/gases recovered from processes using fuel feedstocks inside chemical sector boundary (MWh) 0 Avient CDP Climate Change Questionnaire 2022 Friday, July 29, 2022 82 Heat Total gross generation inside chemicals sector boundary (MWh) 0 Generation that is consumed inside chemicals sector boundary (MWh) 0 Generation from renewable sources inside chemical sector boundary (MWh) 0 Generation from waste heat/gases recovered from processes using fuel feedstocks inside chemical sector boundary (MWh) 0 Steam Total gross generation inside chemicals sector boundary (MWh) 0 Generation that is consumed inside chemicals sector boundary (MWh) 0 Generation from renewable sources inside chemical sector boundary (MWh) 0 Generation from waste heat/gases recovered from processes using fuel feedstocks inside chemical sector boundary (MWh) 0 Cooling Total gross generation inside chemicals sector boundary (MWh) 0 Generation that is consumed inside chemicals sector boundary (MWh) 0 Generation from renewable sources inside chemical sector boundary (MWh) 0 Generation from waste heat/gases recovered from processes using fuel feedstocks inside chemical sector boundary (MWh) 0 C8.2g (C8.2g) Provide a breakdown of your non-fuel energy consumption by country.

Avient makes no warranties or guarantees respecting suitability of either Avient’s products or the information for your process or end-use application. It should not be used in combination with dosing systems not supplied by Avient. EU FDA Mercosur SmartHeat RHC Yes Yes Yes PACKAGING Package Type Quantity 5G Pail Up to 40 lbs Planetpak Up to 40 lbs Test Description Test Method Units Typical Values Viscosity Avient Method cP 6,000–10,000 Density Avient Method Lbs/gal 7.9–8.9 Color Variance Avient Method ∆E 0.0–1.0 Color Appearance Visual — Slight Blue Dispersion Pressout Visual — Pass Opacity: Visual Visual — Pass TYPICAL GENERAL PROPERTIES1 1Typical values are not to be construed as specifications.

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High loading and optimized dispersion of pigments provide a cost-effective way to safeguard light transmission requirements while supporting regulatory requirements for pharmaceutical packaging materials. Contact Avient for more information. Avient makes no warranties or guarantees respecting suitability of either Avient’s products or the information for your process or end-use application.

We are positioned to capture enhanced market share over expanding and emerging needs that will also enable climate resiliency High revenue growth opportunities to meet demand for highly efficient chemical materials that will contribute to lowering customers' emissions as part of our Sustainable Solutions label High to moderate revenue growth opportunities for new chemical materials pertinent to Avient's customers' strategies (low-carbon and otherwise) and are in compliance with any existing regulations (i.e., VOC reducing materials that address vehicle air quality standards) Impact Legend Time horizon Legend Low impact S - short-term 0-5 years Moderate impact M - medium-term 5-15 years High impact L - long-term 15-30 years BUSINESS IMPLICATIONS AND STRATEGIC RESPONSES BUSINESS IMPLICATIONS AND STRATEGIC RESPONSES IMPACT DRIVER & TIME HORIZON Policy & Legal Risk M L Technology Risk S M Market Risk S M Reputation Risk L Acute & Chronic Risk L IMPACT DRIVER & TIME HORIZON Resource Efficiency Opportunity S M L Energy Source Opportunity M L Products & Services and Markets Opportunities S M L · We have embedded an energy intensity KPI (covering process and builidng efficiencies) into the incentive structure for all employees. · By 2030, Avient will enable 100% of our products manufactured for packaging applications to be recyclable or reusable to advance the circular economy, for which approximately 90% of Avient’s products met this criteria in 2020. ADAPTATION & STRATEGIC CONSIDERATIONS ADAPTATION & STRATEGIC CONSIDERATIONS · Avient's Environmental and Product Stewardship Polices set a foundation for greater operational and external policy expectations aligned with energy efficiency standards, renewable energy procurement, supplier engagement (i.e., Media & Stakeholder Analyses {MSA} climate criteria) · The current and future focus is on continued Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) assessments, reclassifications and communication on the safe use and handling of these substances. Many other countries are following suit on the EU REACH chemicals regulation or a similar framework.

Avient works with leading equipment and technology partners to achieve best-in-class solutions for circular economy requirements. KEY CHARACTERISTICS • Customized sortable black and dark colors upon request • Solid or liquid form • Suitable for PET, polyolefins and PCR • Processes: extrusion, injection, thermoforming • Coloration strength & dispersion quality, similar to conventional black masterbatch • Very good processability • Competitive Let-Down Ratio (LDR), depending on applicable standards, part-geometry, added ingredients • Food contact approval documentation available upon request PRODUCT BULLETIN Sustainability Spotlight Recycle Solutions 1.844.4AVIENT www.avient.com Copyright © 2022, Avient Corporation. Avient makes no warranties or guarantees respecting suitability of either Avient’s products or the information for your process or end-use application.

Avient works with leading equipment and technology partners to achieve best-in-class solutions for circular economy requirements. KEY CHARACTERISTICS • Customized sortable black and dark colors upon request • Solid or liquid form • Suitable for PET, polyolefins and PCR • Processes: extrusion, injection, thermoforming • Coloration strength & dispersion quality, similar to conventional black masterbatch • Very good processability • Competitive Let-Down Ratio (LDR), depending on applicable standards, part-geometry, added ingredients • Food contact approval documentation available upon request PRODUCT BULLETIN 1.844.4AVIENT www.avient.com Copyright © 2022, Avient Corporation. Avient makes no warranties or guarantees respecting suitability of either Avient’s products or the information for your process or end-use application.

MECHANICAL STRENGTH – BURST TESTING Anthranilamide AAnchor 1.844.4AVIENT www.avient.com EASY INTEGRATION ColorMatrix AAnchor is a liquid dispersion additive easily incorporated into the PET stream during injection molding or extrusion using ColorMatrix standard liquid metering equipment. ACETALDEHYDE REDUCTION – COMMERCIAL CASE STUDY RESULTS Copyright © 2024, Avient Corporation. Avient makes no warranties or guarantees respecting suitability of either Avient’s products or the information for your process or end-use application.

Browse and download our literature to learn more about Avient solutions and services. Colorant Chromatics™ PES/PPSU delivered consistent distribution and dispersion in high-temperature polymers, resulting in improved mechanical properties and performance Explore Colorant Chromatics's broad portfolio, markets and applications, and how Avient can provide the highest levels of service (English language version).