as President and Chief Executive Officer, effective Lead Independent Director, as Non-Executive Chairman of the Board, also effective View original content to download multimedia:https://www.prnewswire.com/news-releases/avient-appoints-ashish-k-khandpur-as-chief-executive-officer-effective-december-1-2023-301985270.html

HEALTHCARE DEVICE OEM C O N T I N U O U S G L U C O S E M O N I T O R • Specific color matching for brand alignment and recognition • Chemically resistant material to help product last longer • Single source for materials and color expertise • Provided a pre-colored solution that met rigorous application requirements to improve color consistency between products • Incorporated scratch & mar resistant additives for improved durability • Offered the ability to run small pilot lots • Met regulatory requirements for USP Class VI Trilliant™ HC Thermoplastics KEY REQUIREMENTS WHY AVIENT? AVIENT SOLUTION SINGLE SOURCE SUPPLIER LEARN MORE Copyright © 2021, Avient Corporation.

Our Versalloy™ HC Series TPVs are ideal for medical devices that are designed with long, thin flow paths, and they're highly colorable with a smooth tactile feel.

Our Versalloy™ HC Series TPVs are ideal for medical devices that are designed with long, thin flow paths, and they're highly colorable with a smooth tactile feel.

Our Versalloy™ HC Series TPVs are ideal for medical devices that are designed with long, thin flow paths, and they're highly colorable with a smooth tactile feel.

LABORATORY EQUIPMENT MANUFACTURER P C R W E L L P L A T E S • Very high level of TiO2 to prevent “cross-talk” between the wells during the qPCR fluorescence testing procedure • Minimized background phosphorescence caused by agglomeration of TiO2 and/or oxidized (stressed) polystyrene • Preservation of polystyrene grade properties • Change control of formulation and manufacturing process • Robust product quality from batch to batch • Developed optimally dispersed, ready-to-use white formulation that maintains adequate signal transmission, as well as minimizing “cross-talk” and background phosphorescence • Optimized the use of general purpose polystyrene (GPPS) for a good balance between melt flow and other physical properties, such as stiffness • Provided comprehensive change control of raw materials and formulation, with a robust manufacturing process and quality control under a third party ISO 13485:2016 certified QMS Mevopur Healthcare Colorants and Formulations – pre-colored solution WHY AVIENT? AVIENT SOLUTION PERFORMANCE + CONSISTENT QUALITY LEARN MORE KEY REQUIREMENTS © 2025 Avient Corporation. https://www.avient.com/products/polymer-colorants/healthcare-colorants/mevopur-healthcare-colorants-and-formulations Slide 1: laboratory equipment manufacturer

Pigments and eye-catching special effects • Prompt, precise and custom color matching • Biocompatible functional additives • FDA CFR 21, USP VI, ISO 10993-X, and/or USP 661-X • ISO 13485 facilities Avient Corporation 5 4. Design conceptualization and rendering services can help bring your vision to life and embody your brand • Recommendations on overmolding and texture will optimize your production and performance Avient Corporation 7 Dampener 11 Stopper 12 9 Plunger 10 Avient Corporation 8 Internal Mechanical Performance Performance and reliability are vital when designing for more effective treatments and better patient outcomes. WHY AVIENT?

Avient Announces Quarterly Dividend... Avient Board of Directors Appoints Ashish K. Avient Announces First Quarter 2025 Results...

Senior management believes these measures are useful to investors because they allow for comparison to Avient's performance in prior period s 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's annual 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.

Conference call participants in the question and answer session should pre-register using the link at avient.com/investors, or here, to receive the dial-in number and personal PIN. 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's annual incentive plans and is used in debt covenant computations.