Your customers are early adopters, and their technology expectations run high.

Ashish Khandpur President and CEO December 18, 2023 SECURITY POLICY Avient Corporation places a high priority on protecting the security of our people, our buildings and equipment, and our proprietary information, technology and systems.

EPS (ex Amort) 3.96$ 0.13$ 4.09$ (0.58)$ 3.51$ Pro Forma Leverage (12/31/2022E) Net Debt / Adjusted EBITDA 1.6x 3.4x 2.8x Forecast Dyneema Forecast + Dyneema Sale of Distribution Pro Forma 2022 TWO-YEAR LEVERAGE MODEL 16 3.5x 2.7x 1.6x 2.8x 2.4x 2.0x 2019PF 2020PF 2022E 2022PF 2023E 2024E Dyneema® AcquisitionClariant Color Acquisition (1) Pro forma for the acquisition of the Clariant Color business (2) Pro forma for the acquisition of Dyneema® and potential divestiture of Distribution, including repayment of senior notes due 2023 and Term Loan (1) (1) (2) OUR SPECIALTY JOURNEY CONTINUES 17 • Dyneema® brings leading technology and brand with the World’s Strongest Fiber™, deep history of application development and strong management team focused on specialty applications • Dyneema® transaction is aligned with our previously stated acquisition goal of expanding our composites and fiber capabilities • Similar to our other technology expansion acquisitions, Dyneema® allows us to leverage our invest-to-grow strategy • The possible sale of our Distribution business also presents potential benefits with respect to leverage and EBITDA margins 46% 66% 86% 100% 0% 40% 60% 80% 100% 2005 2010 2015 2021 2022 PF % o f A dj u st ed E B IT D A (1 ) JVs Distribution Performance Products & Solutions Specialty (1) Adjusted EBITDA is EBITDA excluding corporate costs and special items (2) Pro forma for the acquisition of Dyneema® and potential divestiture of Distribution (2) Building & 43% 14% Telecom. 2006 2022 Pro forma Building & Telecom.

KEY CHARACTERISTICS • Lightweight • High strength & stiffness • Excellent fatigue & impact resistance • Exceptional strength-to-weight ratio • Strong adhesive properties • Chemical and corrosion resistance • Reduced NVH compared to metals • Rapid cycle times • Low VOCs VALUE SOLUTION • Replaces metal without sacrificing strength • Reduced vehicle weight improves fuel economy, reduces energy consumption • Selective reinforcement adds strength in high stress areas • Easily integrated & streamlined manufacturing process • Easy bonding to various materials • Increases structure & puncture resistance • Can be used in injection and compression overmolding operations • Enables thin-walling and material reduction by adding reinforcement to traditional materials • Able to be re-formed, reused, recycled USES & APPLICATIONS • Interior structural reinforcement such as walls, load floors, headliners, door panels, storage, storage lids, and trim pieces • External body panels • Front end and door module reinforcement • Service access cover reinforcement • Interior hatch covers GORDON COMPOSITES™ & GLASFORMS™ THERMOSET COMPOSITES Gordon Composites™ and Glasforms™ thermoset composites are made with proprietary resin/ fiber reinforcement technologies.

Our global team is here to accelerate development and part approvals, supporting you with: • Materials that meet over 500 automotive polymer OEM specifications • More than 14,000 color and additive approvals for OEM specifications, including more than 2,000 UL94-registered concentrates and pre-colors • Advanced design and color expertise PORTFOLIO HIGHLIGHTS Specialized polymers and composites • Thermoplastic Elastomers • Recycled and Bio-based Thermoplastic Elastomers • Long Fiber Reinforced Formulations • Thermally Conductive Formulations • Static Dissipative, Electrically Conductive, and EMI/RFI Shielding Formulations • Pre-Colored Thermoplastics for Premium Finishes • Engineered Polymer Formulations • Continuous Fiber Tapes & Laminates Colorants, additives, and plastisols • Solid & Liquid Colorants (special effects & bio-based) • Colorant and Additive Concentrates • Functional and Performance Additives (UV, FR, antimicrobial, and more) • Liquid Additives • Chemical Foaming and Nucleating Agents • High-Temperature Concentrates • Silicone Dispersions • Vinyl Powders and Plastisols Design & Color Services • Avient Design • ColorWorks™ Design & Technology Centers UNDERHOOD Air Management Fuel Systems Filters/Cleaners Engines/Power train Fans & Shrouds Engine & Cam Covers Fluid Reservoirs Wire & Cable and Connectors Battery Systems & Supports EV Battery Systems Sensors/Controls/Actuators Turbo/Super Chargers Control Modules/Valves Gears & Hoses HVAC Systems Electrical Control Units EXTERIOR Move over metal... our material and colorant solutions enable you to replace metal and paint while improving miles per gallon or per charge.

We believe that our ongoing commitment to protect the environment, to remain at the forefront of fiber and coating technology, and to ‘treat others as we want to be treated’ will continue to drive the success of our customers, shareholders, and employees.

EXPECTATIONS FOR USE OF INFORMATION SYSTEMS Users shall: • Use all Information Systems consistent with their intended purpose, Avient business objectives, and the Code of Conduct; • Take necessary steps to prevent unauthorized access to and maintain security of Confidential Data; • Use only approved and secured methods when sharing Confidential Data and ensure recipients have authorization to receive Confidential Data and/or have obtained prior approval from User’s manager; and • Obtain approval from Avient’s Information Technology department before procuring, installing, connecting, using, or decommissioning software, systems, applications, or non- Avient devices to or from Information Systems, including, but not limited to, on premise and cloud-based systems.

BEHÖRDLICHE AUFLAGEN If a present or future law, governmental decree, order, regulation, or ruling under any existing or future legislation prevents Seller from increasing or revising the price as provided herein, or nullifies or reduces any price or price increase hereunder, upon written notice from one to the other, Seller and Buyer will attempt to identify mutually agreeable changes to conform this contract with such law, decree, order, regulation, or ruling. Buyer acknowledges and represents that it is familiar with and shall strictly comply with all applicable laws and regulations concerning the trade, export or re-export of products, services, data or technology 17.3 Der Käufer erkennt an, dass die Verwendung des Produkts den Anforderungen oder Beschränkungen von Gesetzen und Normen unterworfen sein kann. Buyer acknowledges and represents that it is familiar with and shall strictly comply with all applicable laws and regulations concerning the trade, export or re-export of products, services, data or technology (“Items”), including the International Traffic in Arms Regulations (ITAR), the Export Administration Regulations (EAR) and the trade sanctions regulations administered by the U.S.

If a present or future law, governmental decree, order, regulation, or ruling under any existing or future legislation prevents Seller from increasing or revising the price as provided herein, or nullifies or reduces any price or price increase hereunder, upon written notice from one to the other Seller and Buyer will attempt to identify mutually agreeable changes to conform this contract with such law, decree, order, regulation, or ruling. Buyer acknowledges and represents that it is familiar with and shall strictly comply with all applicable laws and regulations concerning the trade, export or re-export of products, services, data or technology (“Items”), including the International Traffic in Arms Regulations (ITAR), the Export Administration Regulations (EAR) and the trade sanctions regulations administered by the U.S. Alıcı, makul olmayan sebeplerle verilmekten imtina edilmemek kaydıyla Satıcının ön yazılı izni olmaksızın, bu sözleşme tahtındaki haklarını devredemez veya görevlerini delege edemez.

If a present or future law, governmental decree, order, regulation, or ruling under any existing or future legislation prevents Seller from increasing or revising the price as provided herein, or nullifies or reduces any price or price increase hereunder, upon written notice from one to the other, Seller and Buyer will attempt to identify mutually agreeable changes to conform this contract with such law, decree, order, regulation, or ruling. Buyer acknowledges and represents that it is familiar with and shall strictly comply with all applicable laws and regulations concerning the trade, export or re-export of products, services, data or technology (“Items”), including the International Traffic in Arms Regulations (ITAR), the Export Administration Regulations (EAR) and the trade sanctions regulations administered by the U.S. The number of arbitrators shall be one.