Contact Lens Container - Case Study Custom Versaflex™ formulation enhances contact lens container manufacturing productivity Guide to overmolding material selection, part and mold design, material handling and preparation, TPE injection molding, processing, maximizing adhesion and troubleshooting for GLS™ TPEs

Contact Lens Container - Case Study Custom Versaflex™ formulation enhances contact lens container manufacturing productivity Guide to overmolding material selection, part and mold design, material handling and preparation, TPE injection molding, processing, maximizing adhesion and troubleshooting for GLS™ TPEs

Investor Relations Contact: Eric R. Swanson, Director, Investor Relations, PolyOne Corporation, +1 440-930-1018, eric.swanson@avient.com; Media Contact: Kyle G. Investor Contacts

Thermoplastics and polymer composites are found in a variety of end-use products and markets, including packaging, defense, building and construction, wire and cable, transportation, medical, furniture and furnishings, durable goods, outdoor high performance equipment, electrical and electronics, adhesives, inks and coatings and fiber. Vice President, Aerospace of Cytec Engineered Materials (a producer of specialty bonding adhesives and composite materials) from November 2009 to February 2016. FINANCIAL INFORMATION Security analysts and representatives of financial institutions are invited to contact: Joe Di Salvo Vice President, Treasurer and Investor Relations Phone: 1-440-930-1921 Email: giuseppe.disalvo@avient.com AUDITORS Ernst & Young LLP 950 Main Ave., Suite 1800 Cleveland, OH 44113 INTERNET ACCESS Information on Avient’s products and services, news releases, corporate governance, EDGAR filings, Reports on Forms 10-K and 10-Q, etc. as well as an electronic version of this annual report, are available on the Internet at www.avient.com.

If the required resin is not listed under Avient concentrates, please contact an Avient representative to discuss more options.

This formulation 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 will protect the door from cracking as it comes into contact with copper particles over time. GRI Standards Content Index Sustainability Report | 2019 94 GRI Standards Content Index Reporting Practice 102–50 Reporting period January 1, 2019 through December 31, 2019 102–51 Date of most recent report This is Avient's 2nd sustainability report; the first was published under the name PolyOne in 2019. 102–52 Reporting cycle At minimum, biennial 102–53 Contact point for questions regarding the report https://www.avient.com/contact-us-now 102–54 Claims of reporting in accordance with the GRI standards This report has been prepared in accordance with the GRI Standards: Core Option.

This formulation 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 will protect the door from cracking as it comes into contact with copper particles over time. GRI Standards Content Index Sustainability Report | 2019 94 GRI Standards Content Index Reporting Practice 102–50 Reporting period January 1, 2019 through December 31, 2019 102–51 Date of most recent report This is Avient's 2nd sustainability report; the first was published under the name PolyOne in 2019. 102–52 Reporting cycle At minimum, biennial 102–53 Contact point for questions regarding the report https://www.avient.com/contact-us-now 102–54 Claims of reporting in accordance with the GRI standards This report has been prepared in accordance with the GRI Standards: Core Option.

Copyright © . 2024 23 Diverse technology portfolio Commercial excellence, financial rigor & prudence Culture of safety and sustainability FOUNDATIONAL STRENGTHS Unwavering customer focus Global reach with a local touch Innovation Digital for Operational Excellence and Growth Leadership, talent STRATEGIC DRIVERS OUR PURPOSE Innovator of materials solutions to help our customers succeed, while enabling a sustainable world STRATEGIC APPROACH Intersecting high growth markets and secular trends with our technologies to create product platforms of scale Catalyze the core Build new platforms of scale GROWING AT GDP+ GROWING AT 10% PLUS CAGR Copyright © . 2024 24 Redesigning organizations & compensation to drive strategy Compensation • Designed a new compensation plan directly to our strategy execution Colors, and Inks Specialty R&D Research and Development New business development & marketing excellence • New SVP hired • Reorganized under a single global leadership eliminated structure and complexity “play to win” focused organizations for growth vectors up front • New CTO hired Copyright © . 2024 25 Strong and committed team leading the change Leslie Sequeira Chief Information Officer SVP and Chief Financial Officer Joel Rathbun SVP Mergers & Acquisitions SVP and President Color, Additives and Inks SVP and President Specialty Engineered Amy Sanders SVP, General Counsel and Secretary Kyle Rose VP, Corporate Communications John Midea SVP, Global Ops and Process Improvement Kristen Gajewski SVP and Chief Human Resources Officer ALSO HERE TODAY Phil Clark SVP and Chief Technology Officer ALSO HERE TODAY Mike Irwin SVP, New Business Development and Marketing Excellence Color, Additives and Inks SEGMENT STRATEGIC REVIEW Copyright © . 2024 28 Solutions provider of customized color and functionality to enhance and improve polymers Color, Additives and Inks – an overview 34% 37%21% 8% US, Canada Europe, Middle East, Africa Latin America $2.0B • Differentiate and enhanced aesthetic appeal of our customers’ products • Enable sustainability through our solutions • Safeguard and preserve packaged contents • Extend product shelf life KEY E N D MARKETS PACKAGING CONSUMER HEALTHCARE BUILDING & CONSTRUCTION INDUSTRIAL TRANSPORTATION Copyright © . 2024 29 Our value we know color color designs completed annually 400,000 color formulations manufacturing footprint in industry 550 commercial resources globally serving locally we are global we innovate 18,000 sustainable solutions broadest portfolio in industry 14,500 additives solutions and growing Copyright © . 2024 30 Portfolio of CAI solutions Solid Colorants Liquid Recycling solutions Barrier enhancements Surface modifiers Plastisol Water-based Bio-based Silicone dispersion Vinyl formulations Specialty coatings Advanced dispersionsScreen printing inks Copyright © . 2024 31 CAI sales growth faster response to customer needs tailored to local needs...globally enhance service with digital tools Copyright © . 2024 32 Personalized, self-administered 32 CAI PORTFOLIO Copyright © . 2024 33 • Regulatory compliance • Reliable material quality and uninterrupted supply • Supply chain risk mitigation • Global reach $6B ADDRESSABLE MARKET AVIENT VALUE PROPOSITION • ISO 13485 accredited sites • Globally approved raw material portfolio • Strict change management • Global supply Auto injectors Syringes Inhalers OTHER APPLICATONS • In-vitro diagnostics • Remote monitoring • Pharma packaging • Catheters • Medical equipment Copyright © . 2024 34 • Reducing material and energy usage • Achieving sustainability goals and objectives • Improved product performance, structural integrity $5B ADDRESSABLE MARKET AVIENT VALUE PROPOSITION • Best-in-class additives for a wide range of polymer processing temperatures • Design services to simulate foaming and mold designs TransportationWood plastic composite decking Bottles and food packaging Building and Copyright © . 2024 35 • Regulatory restrictions with the removal of PFAS in multiple end markets • Major retailers requiring PFAS content declaration from suppliers • Enhanced plastic properties, aesthetics and processability • Specialized functionalities making plastics a safe option in demanding applications $8B ADDRESSABLE MARKET OTHER APPLICATONS • Electrical connectors • Labware • Food contact appliances Flexible film Artificial turf Food storage, oil containers 36Copyright © .

Thermoplastic resins are found in a variety of end-use products and markets, including packaging, building and construction, wire and cable, transportation, medical, furniture and furnishings, durable goods, institutional products, electrical and electronics, adhesives, inks and coatings. Fuller Company (a global manufacturer and marketer of adhesives and specialty chemical products) from November 2005 to April 2007. FINANCIAL INFORMATION Security analysts and representatives of financial institutions are invited to contact: Isaac D.

EUROPE: SDS for Europe can be obtained by contacting the appropriate regional office. MSDS X150-245-030-04 EUROPE: SDS for Europe can be obtained by contacting the appropriate regional office.