Q1 2025 results Copyright © . 2025 7 Color, Additives & Inks – Q1 2025 performance Sales 515 520 Adj. Color, Additives & Inks END MARKETS REGIONS 34% 21% 15% 11% 8% Packaging Telecom 1%Energy 1% 34% US & Canada Latin America Europe, Middle East Construction 15Copyright © . Slide 12 Slide 13: Avient 2024 sales Slide 14: Color, Additives & Inks Slide 15: Specialty Engineered Materials Slide 16: Avient 2024 regional sales, by end market Slide 17: Raw material basket IR Deck - AVNT-2025.03.31 Non-Gaap Recs.pdf Attachment

Senior management has referenced adjusted EPS excluding the impact of additional shares issued in February 2020. On January 28, 2020, prior to the issuance of the additional shares, the Company provided guidance for adjusted EPS for the first quarter of 2020. This guidance excluded the impact of the additional shares subsequently issued in February.

Progress on TRA Plan ­ Creation Targets CAS RN Substance Name Quantity Years Description of Target 117­81­7 Bis(2­ethylhexyl) phthalate No quantity target No timeline target 85­44­9 Phthalic anhydride No quantity target No timeline target Progress on TRA Plan ­ Additional Actions Were there any additional actions outside the plan taken during the reporting period to reduce the use and/or creation of the substance? Describe any additional actions that were taken during the reporting period to achieve the plan's objectives Provide a public summary of the description of the additional action taken Yes Bis (2­ethylhexyl) Phtalate (DEHP) is a plasticizer and component in the manufacturing of pelletized plastic compounds, mostly for use in the manufacture of wire and cable insulation (wire jackets).  Progress on TRA Plan ­ Reductions due to additional actions taken Reductions due to additional actions taken Quantity Does the facility have a documented pollution prevention plan?

Avient engineered a new customized formulation for the part, which provided both the processability required for extremely short cycle injection-compression molding, as well as including an additive to stabilize the material when in contact with copper. This additive protects the door from cracking as it comes into contact with copper particles over time. In addition, the new material also provides anti-static properties and low VOC levels, which helps the system adhere to regulations such as the Vehicle Interior Air Quality (VIAQ) standard.

Cesa™ Anti-Block Slip LS Additives for low-temperature sealing layers in flexible polyolefin packaging FOOD PACKAGING IN A CHANGING MARKET In many food contact applications, flexible plastic packaging is replacing rigid packaging for varied reasons; it has lightweight characteristics, is easy to customize in any shape, and has a favorable carbon footprint. WHAT IT DOES Cesa™ Anti-Block Slip LS is a range of additives for flexible polyolefin packaging that helps convertors and brand owners switch from multi-material to mono-material packaging. The additive’s formulation ensures smooth and efficient processing of mono-material polyolefin films that contain low-temperature sealing layers, improving the overall performance of the packaging, and providing a reliable and user-friendly experience for both manufacturers and end-users.

In addition, brand owners can readily include additives that identify authentic products, allowing them to combat counterfeit versions TPEs can also assist with fast visual identification at point-of-sale or during administration. 5. In addition, production costs increase, as rubber parts typically require deflashing and assembly using adhesives. In addition, the formulation meets ISO 15759 requirements for medical infusion equipment and is manufactured in an ISO 13485 facility.

By 2040, a circular economy has the potential to reduce the annual volume of plastics entering our oceans by 80%, reduce greenhouse gas emissions by 25%, generate savings of $200 U.S. dollars per year and create 700,000 net additional jobs.. In addition, one of the largest comparative studies on the impact of implementing a circular economy demonstrated a positive effect on employment, in part due to new jobs in recycling and remanufacturing. Solutions that Support the Circular Economy REDUCED ENERGY USE CESA™ Dry Additives CESA™ Release Additives OnCap™ CTR Process Optimization ColorMatrix™ Joule™ & Smartheat™ Infrared Absorber Specialty Low Cure Inks SiteCool™ Infrared Absorption Technologies BIO-DERIVED CONTENT reSound™ OM Bio-Derived Thermoplastic Elastomers reFlex™ Bio-Derived Plasticizer OnCap™ Bio Additives OnColor™ Bio Colorants reSound™ Natural Fiber Reinforced Formulations LIGHTWEIGHTING Glasforms™ Pultrusion Technologies Polystrand™ Continuous Fiber Composites IMPROVED RECYCABILITY CESA™ IR Black Additives CESA™ Extend Additives ColorMatrix™ Lactra™ SX Light Blocking Additive for PET ColorMatrix™ Ultimate™ UV Light Barrier ColorMatrix™ Capture™ Oxygen Scavenger for PET ColorMatrix™ Triple A™ Acetaldehyde Scavenging Additives ColorMatrix™ Reprize™ IV Builder for PET OnColor™ IR Sortable Black for Recyclable Packaging Bergadur™ Post-Industrial Recycled Content Polyester Formulations Nymax™ PIR Post-Industrial Recycled Nylon Formulations Maxxam™ FR Flame Retardant Polyolefin Formulations Predictions Gartner predicts circular economies will replace linear economies in 10 years, noting that supply chain leaders must adapt to circular models in order to keep up in a marketplace with a growing emphasis on sustainability.

In addition, long fibers form a “3D network” within a molded part; this network supports parts even when a polymer begins to soften (creep), meaning LFTs are an excellent replacement for metal components in portions of the vehicle subject to high stress from extreme temperatures or pressure. Thermally conductive plastics help dissipate the heat, adding life to the fixture while offering additional design and manufacturing benefits.

In addition, nylon 6 offers a lustrous finish while nylon 6/6 is designed for high-temperature performance.  Automotive Solutions - Colorants, Additives, Advanced Composites, Engineered Polymers, Elastomers, Vinyl, Polyolefins

Additional guidelines are: Substrate Type - additives (glass-filled, mineral-filled, heat-stabilized, lubricated)