Edgetek™ REC PC Recycled Content Polycarbonate Solutions As consumer demand for more sustainable, eco- conscious products grows along with regulatory pressure, Edgetek™ REC PC formulations can help brand owners deliver on their sustainability goals. The formulations contain 25–70% post-consumer recycled (PCR) or post-industrial recycled (PIR) content, expanding material solution options for achieving sustainability goals.

PREPERM™ Solutions for Healthcare Technology APPLICATION BULLETIN PREPERM DIELECTRIC MATERIAL FAMILY Optimized material properties for each RF application GAME-CHANGING PREPERM SOLUTIONS Tissue-mimicking phantom materials​ PREPERM material permittivity can be adapted to the Dk of the human body at various frequencies.

By 2030, Avient will deliver cumulative annual revenue growth from our Sustainable Solutions portfolio of 8–12% with 2020 as a baseline As a founding member of the Alliance to End Plastic Waste, Avient will collaborate to develop and implement solutions to end plastic waste with approximately 50 members across the value chain.

With Rejoin PCR Colorants, formulations can include both pigments and functional additives in one solution. KEY CHARACTERISTICS • Enables 100% PCR packaging • Helps companies meet sustainability goals • Replaces virgin resin, reducing total energy consumption and limiting emissions* • Combines colorants and functional additives in one solution • Allows for full recyclability of the end product • Provides a lower carbon product footprint than traditional masterbatch • Suitable for use in polyethylene (PET) and polypropylene (PP) as well as in rPET and rPP applications MARKETS AND APPLICATIONS Rejoin PCR Colorants are designed for use in a broad range of applications, including household and personal care packaging, consumer goods, or food and beverage containers.

OUR VISION At Avient, we create specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. We create specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Our customers value the breadth of our solutions as we can tap into a broad array of raw materials to solve their specific needs.

We saw an untapped market opportunity for improved seat fastening solutions and recognized that continuing to use bent steel plate would hold us back,” said Hagen Spiess, Senior Design Engineer at HellermannTyton. THE SOLUTION Avient recommended Bergamid™ B70 G30H black TM-X PA 6 resin with 30 percent glass fiber reinforcement for its excellent mechanical properties and cost benefits. The new seat securement part has already been adopted by one OEM customer, and we are confident that other manufacturers will come to us for this lightweight, cost-efficient solution.”

AVIENT OVERVIEW OUR VISION: Creating specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world 2023 Financial GuidanceCompany Overview 2022 Pro Forma Revenue By: 9,700 Employees 104 Manufacturing Sites 20,000+ Customers Key Highlights  Premier formulator of specialized and sustainable material solutions  Asset-light business model, with flexibility to adapt to customer needs  Best-in-class technology and service (140+ PhDs / 2,500+ patents)  History of transformation through successful M&A while consistently returning cash to shareholders  Poised for continued future growth in excess of GDP $3.3B Revenue $2.40 $525M Adjusted EBITDA 16.0% Adjusted EBITDA Margins $180M Free Cash Flow 3.0x Net Leverage Over $1B in share buybacks since 2011 Raised dividend for 12 consecutive years, a 16% CAGR since 2011 Geography Segment Industry U.S. & Canada 64% 36% Specialty Engineered Materials Color Additives and Inks 40% 37% 18% 9% 4% 4% Building & Energy Telecom 4 CREATING A WORLD-CLASS SUSTAINABLE ORGANIZATION 1. 6.5% annualized long term sales growth leveraging sustainable solutions, composites, healthcare and emerging regions 2. We create specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Our customers value the breadth of our solutions as we can tap into a broad array of raw materials to solve their specific needs.

WINNING SMILES WITH AN OPTIMUM SOLUTION CASE STUDY: WITHSTAND™ ANTIMICROBIAL ADDITIVES Challe nge Accepted. THE SOLUTION Seeking a way to address these challenges, the manufacturer consulted Avient. WithStand Antimicrobial Additives provide a proven, effective, durable, uncompromised solution to limit microbe development in finished plastic devices.

INNOVATIVE CARBON FIBER SOLUTIONS FOR SG PIPE REPLACEMENT To learn more about Fiber-Line high performance engineered fibers, visit fiber-line.com. THE SOLUTION Avient worked with the company to develop a novel reinforcement material comprised of Avient Fiber-Line™ carbon fiber tows in which the filaments were manipulated to increase strength and improve abrasion resistance. Moreover, the innovative and collaborative nature of the pipelining system can increase future pipeline safety, limit environmental, climate, and public impact, and provide a cost-saving solution to energy providers around the globe.

Additionally, Adjusted EPS excludes the impact of special items and amortization expense associated with intangible assets. 3 AVIENT OVERVIEW OUR VISION: Creating specialized and sustainable materials solutions that transform customer challenges into opportunities, bringing new products to life for a better world 2023 Financial ResultsCompany Overview Revenue By: 9,300 Employees 102 Manufacturing Sites 20,000+ Customers Key Highlights  Premier formulator of specialized and sustainable materials solutions  Asset-light business model, with flexibility to adapt to customer needs  Best-in-class technology and service (140+ PhDs / 2,500+ patents)  History of transformation through successful M&A while consistently returning cash to shareholders  Poised for continued future growth in excess of GDP $3.14B Revenue $2.36 $502M Adjusted EBITDA 16.0% Adjusted EBITDA Margins $186M Adjusted Free Cash Flow Over $1B in share buybacks since 2011 Raised dividend for 13 consecutive years, a 15% CAGR since 2011 U.S. & Canada 64% Specialty Engineered Materials Color Additives and Inks 23% 10% 5% 4% Building & Energy Telecom Geography Segment Industry 4 CREATING A WORLD-CLASS SUSTAINABLE ORGANIZATION 1. 6% annualized long term sales growth leveraging sustainable solutions, composites, healthcare and emerging regions 2. Continue fostering our Great Place to Work® culture Strategic Objectives Long Term Growth Rates Growth Drivers $340 $455 $790 $1,135 $51 $84 $212 $645 $108 $113 $231 $230 $265 $358 $726 $725 8-12% 8-10% 8-10% 5% Sustainable Solutions Composites Healthcare Asia/Emerging Regions Profitable Growth Great Place to Work 5.4% 10.9% 16.0% 2006 2014 2023 EBITDA Margins $0.14 $1.93 $2.36 2006 2014 2023 TOP-TIER SUSTAINABILITY PERFORMANCE AND RECOGNITION Industry Sustainability Standards ESG Ratings Performance 1 4 87th 94th percentile 5 Avient CDP Score: A- FE BRUARY 14 , 2024 W E BCAS T P RE S E N TAT I O N DR. ASHISH KHANDPUR PRESIDENT & CEO 7 8 PORTFOLIO TRANSFORMATION 8 46% 66% 87% 100% 0% 20% 40% 60% 80% 100% 2005 2010 2015 2020 2023 % o f A dj us te d EB IT D A Commodity JVs Distribution Performance Products & Solutions Specialty Businesses Adjusted EBITDA from Specialty Applications SUSTAINABILITY AS A GROWTH DRIVER 9 LONG-TERM REVENUE GROWTH DRIVERS Sustainable Solutions Composites, Healthcare, Asia / LATAM Overlap Other 60%+ Key Growth Drivers Total Company Revenue Growth Drivers Long-Term Growth Rate Sustainable Solutions 8–12% Composites 8–10% Healthcare 8–10% Asia / LATAM 5% Other 0–2% Avient 6% END MARKET OBSERVATIONS (% OF COMPANY SALES) ENERGY DEFENSE TELECOMMUNICATIONS HEALTHCARE 10 TRANSPORTATION INDUSTRIAL BUILDING & CONSTRUCTION 9% CONSUMER PACKAGING 23% 11 REGIONAL OBSERVATIONS (% OF COMPANY SALES) 11 Q 4 2023 RE S U LT S Q4 2023 PERFORMANCE VS.