A developer of gaming accessories saw an untapped market opportunity for controller grips featuring a glow-in-the-dark effect that would appeal to style- conscious customers. The final straw was the company’s inability to achieve its desired glow-in-the- dark effect. In addition to providing a custom green shade, Avient’s engineers had to ensure the glow-in-the- dark effect could match dedicated gamers’ extended periods of play.

Avient’s Cesa™ Stat Antistatic Additives for automotive applications are permanent masterbatches that provide an antistatic effect to molded parts. Cesa™ Stat OCA0025695 reduces electric charges with a sustainable antistatic effect and keeps the surface dust-free and clean. Even after wash- ing the surface with detergent and water with 5 repetitions, the antistatic effect remains unchanged. 0 500 1,000 1,500 2,000 2,500 3,000 0 20 40 60 80 100 Vo lt ag e (V ) Time (s) PP talc filled 5% Cesa Stat OCA0025695 5% Cesa Stat OCA0025695 wash end www.avient.com Copyright © 2023, Avient Corporation.

The full range of OnColor HC Colorants, available as solid or liquid form, includes eye-catching special effects such as pearlescent, iridescent, metallic, and fluorescent. Colors and special effects are incorporated with the goals of speed to market and cost savings in mind, to grow business and differentiate from competition. KEY CHARACTERISTICS • Polymer colorants formulated specifically for healthcare product applications • Meets and exceeds various material performance requirements including FDA 21 CFR, ISO 10993 and USP Class VI • HC Plus colorants certified for bio-compatibility • Available as pre-color, concentrate, masterbatch or Smartbatch™ combined colorant/additive solution • Wide range of colors, striking special effects and custom color matching MARKETS AND APPLICATIONS OnColor™ HC and HC Plus Colorants are an excellent choice for medical devices and parts, pharmaceutical or cosmetic packaging, and many other healthcare related polymer applications.

Uncertain tax positions increased the effective tax rate by 0.6% ($1.0 million). It will be effective for us beginning 2018年1月1日, with early adoption not permitted. Uncertain tax positions increased the effective tax rate by 0.6% ($1.0 million).

As with conventional colorants, special effects such as wood or fiber effects can be added to increase design possibilities.

CARPET PRODUCER N Y L O N C A R P E T • Antimicrobial effectiveness for residential and hospital carpets • Suitable for Bulked Continuous Filament (BCF) processed polyamide (nylon) • Limited impact on color • Quick development to address growing market needs for hygienic surface coverings • Developed efficient antimicrobial solution adapted to BCF processing for high-quality yarns • Reduced risk of discoloration with a smartbatch alternative • Leveraged global capabilities to offer quick development, trials and production quantities • Cesa™ Fiber Additives – antimicrobial additives KEY REQUIREMENTS WHY AVIENT? AVIENT SOLUTION ANTIMICROBIAL EFFECTIVENESS LEARN MORE Copyright © 2023, Avient Corporation.

Senior management believes these measures are useful to investors because they allow for comparison to Avient's performance in prior periods without the effect of items that, by their nature, tend to obscure Avient's operating results due to the potential variability across periods based on timing, frequency and magnitude. In addition, operating income before the effect of special items is a component of Avient annual and long-term employee incentive plans and is used in debt covenant computations. Senior management believes these measures are useful to investors because they allow for comparison to Avient's performance in prior periods without the effect of items that, by their nature, tend to obscure Avient's operating results due to the potential variability across periods based on timing, frequency and magnitude.

Certificate Avient Corporation A B S Q u al it y E va lu at io n s C er ti fic at io n E Certificate Of ConformanceCertificate Of Conformance This is to certify that the Quality Management System of: Avient CorporationAvient Corporation 33587 Walker Road, Building 428 Avon Lake OH 44012 United States has been assessed by ABS Quality Evaluations, Inc. and found to be in conformance with the requirements set forth by: ISO 9001:2015ISO 9001:2015 The Quality Management System is applicable to: Manufacture of plastic compounds, color and performance additives, engineered thermoplastics, vinyl resins, custom mixed plastic materials, custom and commodity colorants for plastics, polyurethane systems, and plasticizers with design and sampling support at Suwanee, GA, and purchasing, customer service, logistics, quality, design and sampling support at PolyOne Corporate Headquarters at Avon Lake, OH, and distribution of resins Certificate No: 31307 Certification Date: 12 OCT 1995 Effective Date: 11 JUL 2024 Expiration Date 07 OCT 2025 Revision Date: 17 JUL 2024 Dominic Townsend, PresidentDominic Townsend, President Copyright as of the Effective Date, ABS Quality Evaluations, Inc. 19 Francis J Clark Circle Bethel - CT 06801 United States Copyright as of the Effective Date, ABS Quality Evaluations, Inc. F-27 , MIDC Ranjangaon, Shirur 412 220 Pune India FACILITYFACILITY NAMENAME FACILITY ACTIVITYFACILITY ACTIVITY ADDRESSADDRESS Copyright as of the Effective Date, ABS Quality Evaluations, Inc.

These droplets tend to accumulate and form a very thin transparent film of water, reducing or even eliminating the fogging effect. Results showed that the type of adhesive used could negatively affect the performance of the anti-fog agent, with solvent-free adhesives having a greater effect. Firstly, the additive had to be compatible with the polymer system, but at the same time it needed to be able to migrate to the surface of the film over time, in order to provide a consistent and long-lasting anti-fogging effect.

Certificate No: 65536 Certification structure: MULTI-SITEMULTI-SITE Certification Date: 29 SEP 2023 Effective Date: 27 FEB 2025 Expiration Date: 27 SEP 2026 Revision Date: 05 MAR 2025 Dominic Townsend, PresidentDominic Townsend, President Copyright as of the Effective Date, ABS Quality Evaluations, Inc. No:8 , 34538 Esenyurt, Türkiye Avient Corporation Design and Manufacture of Colorants and Additives for Plastics No. 8 Third Chin Bee Road, Jurong Industrial Estate Singapore 618684 Avient Corporation Design & Manufacture of Color, Additive Concentrate & Specialty Compounds Kalol Works, Shed No.18-22, GIDC Estate Kalol Gujarat 389330 India Copyright as of the Effective Date, ABS Quality Evaluations, Inc. Toluca 2000 Toluca Estado de México 50200 Mexico RC14001®:2023RC14001®:2023 Certificate Of ConformanceCertificate Of Conformance ANNEXANNEX Certificate No: 65536 Avient CorporationAvient Corporation At the below facilities FACILITY NAMEFACILITY NAME FACILITY ACTIVITYFACILITY ACTIVITY ADDRESSADDRESS Copyright as of the Effective Date, ABS Quality Evaluations, Inc.