STRENGTH MEMBERS FIBERS PROCESSES PRODUCTS Product ID FIBER-LINE® Coating Base Fiber Break Strength Yield Geometry Nominal Diameter Absorption Capacity Description K1420/ SC-BKR Swellcoat® BKR Kevlar® 74.1 LBs (33.6 KGs) 8400 Ft/LB (2560 M/LB) Flat .441 mm 9.0 g/g Water blocking strength element in cable designs.

Boundaries of the reporting company GHG emissions covered by the verification: • Operational Control • Global Exclusions: • Fugitive refrigerants from units

Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: • The time required to consummate the acquisition of the Dyneema business, the satisfaction or waiver of conditions in the purchase agreement, the ability to obtain required regulatory or other third-party approvals and consents and otherwise consummate the proposed acquisition of the Dyneema business; • Our ability to achieve the strategic and other objectives relating to the proposed acquisition of the Dyneema business and possible sale of the Distribution business; • Disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; • The effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; • The current and potential future impact of the COVID-19 pandemic on our business, results of operations, financial position or cash flows, including without any limitation, any supply chain and logistics issues; • Changes in polymer consumption growth rates and laws and regulations regarding plastics in jurisdictions where we conduct business; • Fluctuations in raw material prices, quality and supply, and in energy prices and supply; • Production outages or material costs associated with scheduled or unscheduled maintenance programs; • Unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; • Our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; • Information systems failures and cyberattacks; • Amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; and • Other factors described in our Annual Report on Form 10-K for the year ended December 31, 2021 under Item 1A, “Risk Factors.” Morgan • New Senior Secured Term Loan B and new Senior Unsecured Notes • Potential proceeds from sale of Distribution business modeled to pay off 5.25% senior notes due 2023 and Term Loan • Acquisition aligned with Avient’s track record of disciplined capital allocation policy • Existing dividend policy maintained, focus on deleveraging in the near term (1) (1) Pro forma for the acquisition of Dyneema® and potential divestiture of Distribution, including repayment of senior notes due 2023 and Term Loan Cash and Cash Equivalents 595$ Senior Secured Term Loan due 2026 605$ New Senior Secured Term Loan B 500 Total Senior Secured Debt 1,105$ Senior Unsecured Notes due 2025 650$ New Senior Unsecured Notes 740 Total Senior Unsecured Debt 1,390$ Total Debt 2,495$ Net Debt 1,900$ 2022 Pro forma Adjusted EBITDA 660$ Net Debt / Adjusted EBITDA 2.9x Pro Forma Capitalization (2022 estimates, all figures in $M) T WO - Y E A R L E V E R AG E G OA L 24 3.5x 2.7x 1.7x 2.9x 2.5x 2.2x 2019PF 2020PF 2022E 2022PF 2023E 2024E Dyneema® AcquisitionClariant Color Acquisition (1) Pro forma for the acquisition of the Clariant Color business (2) Pro forma for the acquisition of Dyneema® and potential divestiture of Distribution, including repayment of senior notes due 2023 and Term Loan (1) (1) (2) 25 P RO F O R M A M O D E L I N G 2022E Pro Forma Pro Forma ($M) w/ Dyneema w/Sale Revenue 5,100$ 415$ 5,515$ (1,775)$ 3,740$ Adjusted EBITDA 635 130 765 (105) 660 EBITDA % 12% 31% 14% 6% 18% Pro Forma EPS (Adjusted) 3.50$ 0.00$ 3.50$ (0.56)$ 2.94$ Pro Forma EPS (excl. amortization) 3.96$ 0.35$ 4.31$ (0.56)$ 3.75$ Leverage (12/31/2022E) Net Debt / Adjusted EBITDA 1.7x 3.5x 2.9x Avient Dyneema Distribution® ® OUR SPECIALTY JOURNEY AC Q U I S I T I O N H I S TO RY 27 Commercial Resources(1) Operating Income ($ in millions) Operating Margins 259 360 At Acquisition 2021 $40 $122 At Acquisition 2021 9% 21% At Acquisition 2021 Established Acquisitions (> 7 years) + 39% + 210% + 1200 bps (1) Commercial Resources include associate headcount in R&D / Technical, Marketing and Sales C L A R I A N T C O LO R AC Q U I S I T I O N 28 $133 $205 2019PF 2021 28 Clariant Color EBITDA Growth Purchase Price Multiple 10.8x 7.0x 6.1x 2019PF 2021 2021 w/ Full Synergies • Acquisition of Clariant Color business significantly expanded presence in healthcare, packaging and consumer end markets • Strength of portfolio – double-digit annual EBITDA growth since acquisition • $54 million of synergies realized in 2021 • Acquisition completed on July 1, 2020 for $1.45 billion. In addition, operating income before the effect of special items is a component of Avient’s annual and long-term employee incentive plans and is used in debt covenant computations.

These methods include: PULTRUSION • Fibers are impregnated with liquid thermoset resins, then pulled through a heated die to cure the resin and form the product • This continuous, automated manufacturing process creates constant cross section profiles of any pre-determined length with consistent, uniform quality and exceptional mechanical performance • Applications include rods and profiles of various lengths and complexities, such as utility poles, insulator core rods and structural beams CONTINUOUS FILAMENT WINDING • Combines the principles of filament winding with pultrusion to create constant or tapered cross- sectional tubing in precision sizes • The unique axial and biaxial fiber orientation provides flexural and tensile strength, as well as crush and burst resistance • Applications include lightweight shelter frames and sporting goods components CONTINUOUS RESIN TRANSFER MOLDING (CRTM™) • Engineered core materials are sandwiched between structural composite laminate face sheets • Continuous composite sandwich panels feature high specific strength and stiffness-to-weight ratio • Applications include ballistic resistant panels, truck floors and rail car doors CONTINUOUS FIBER REINFORCED THERMOPLASTICS • Fully recyclable tape, X-Ply™ (0°/90°), and other multi-ply configurations with widths up to 10' wide • Sandwich panels in unlimited lengths, up to 6" thick and 10' wide • High volume production capacity • Applications include structural and aerodynamic components in transportation, and reinforcement of materials such as wood and metal THERMOSET COMPOSITE LAMINATES & BARSTOCK • Unidirectionally reinforced barstock, laminates and hybrid composites engineered to maximize deflection and fatigue resistance • Customizable shapes and sizes • Applications include archery bow limbs, flat springs, prosthetics, sporting equipment THERMOSET FINISHING OPERATIONS • Customized finishing capabilities for barstock and laminates including machining, water-jet cutting, profiling/shaping, sanding, slitting, laminating, molding and coatings TESTING CAPABILITIES • Mechanical – Flexural, tensile, compression, shear, fatigue, impact resistance • Physical – Specific gravity/density, Barcol hardness, water absorption, void content, resin/fiber content, dye penetrant, viscosity • Thermomechanical – Coefficient of linear thermal expansion, glass transition temperature, deflection temperature, degree of cure, curing properties • Electrical – High-voltage, low current dry arc resistance of solid electrical insulation, dielectric strength, water diffusion ABOUT AVIENT ADVANCED COMPOSITES The Avient advanced composites portfolio consists of Glasforms™, Gordon Composites™ and Polystrand™ branded materials.

PREPERM™ Solutions for 5G The increased demand for data capacity and low latency and the growing volume of connected devices require more base stations and higher frequencies.

GUIDELINES FOR USING CESA CLEAN ADDITIVES • Cesa Clean works best when molded maintaining normal (injection) pressure/shear • For best results, Avient recommends a “Running Color Change” which eliminates breaks in the molding cycle • Since the Cesa Clean concentrate will expand, it is recommended to reduce the shot size by 20% • It is designed for use at a let-down ratio (LDR) of 3.0% or (33:1); however, use rate can vary depending on the severity of the contamination but typically is 2.0–4.0% (a use rate higher than 6.0% may not have any positive affect on the cleaning performance) • Using Cesa Clean as a routine part of your color change rotation will allow faster changes and consume a minimal amount of raw material - Note: If the manifold is not cleaned routinely, this process may be more time consuming and additional material will be required • It is best to process at your normal polymer processing temperatures - For best performance, stock temperature should be at least 400°F - If 400°F is achieved during the purging process, no additional activation will occur during the reprocessing of regrind - All parts produced during the “Running Purge Cycle” should be captured as regrind, resulting in a scrap-free color change - If using sequential gates, open and close all gates at the same time while purging the tool - If contamination appears to be coming from one gate, open and close first, and for an extended period of time, to force more material through this location - When cleaning in this manner, pay close attention to shot size - Parts containing the previous or new color plus any Cesa Clean can be used as regrind INTRODUCING CESA CLEAN TO YOUR PROCESS Hand Blend • Hand weigh enough of the Cesa Clean and natural resin mix to equate to 3–5 times the barrel capacity • Use rate should be 3.0% or 33:1 for routine cleaning • For difficult-to-clean tooling, or tooling which is not routinely cleaned, start at 4.0% or 25:1 • Note: Do not attempt to vacuum load more than 15 feet from source as stratification/separation may occur Volumetric Feeder • Calibrate feeder to dispense 3.0% or 33:1 for routine cleaning • For difficult-to-clean tooling, or tooling which is not routinely cleaned, start at 4.0% or 25:1 • This style of feeder is highly recommended for at-the-throat metering of Cesa Clean Blending Units Most blenders have an extra bin for an additive • Fill the additive bin with Cesa Clean • Set blender to introduce the Cesa Clean at 2.0 to 4.0% • Note: Do not air convey any further than 15 feet as Cesa Clean has a high density and may separate from the mix.

This process allows greater control over production tolerances, thus reducing scrap rates, improving quality, and optimizing process capacity.

ColorMatrix™ Joule™ Reheat Additive - Added at the reactor stage to offer an inherent toning capability in addition to infrared (IR) absorption capacity; helps maintain clarity.

Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: • Disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; • The effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; • Disruptions or inefficiencies in our supply chain, logistics, or operations; • Changes in laws and regulations in jurisdictions where we conduct business, including with respect to plastics and climate change; • Fluctuations in raw material prices, quality and supply, and in energy prices and supply; • Demand for our products and services; • Production outages or material costs associated with scheduled or unscheduled maintenance programs; • Unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; • Our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; • Information systems failures and cyberattacks; • Amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; • Our ability to achieve strategic objectives and successfully integrate acquisitions, including the implementation of a cloud-based enterprise resource planning system, S/4HANA; • Other factors affecting our business beyond our control, including without limitation, changes in the general economy, changes in interest rates, changes in the rate of inflation, geopolitical conflicts and any recessionary conditions; and • Other factors described in our Annual Report on Form 10-K for the year ended December 31, 2023 under Item 1A, “Risk Factors.” For the same reasons, Avient is unable to address the probable significance of the unavailable information. 2 3 Q3 2024 HIGHLIGHTS • 8.5% organic sales growth driven by broad-based growth across all regions and most end markets in both CAI and SEM segments • Growth stemmed from gaining share, winning new product specifications and restocking in certain end markets • Both segments expanded YoY EBITDA margins by 40 bps each • Adjusted EPS of $0.65, an increase of 14% vs the prior year • Successfully refinanced $650M outstanding senior notes due 2025; extending maturity to 2031 • Increased dividend 5% to $1.08 on an annualized basis; 14th consecutive increase Adj. 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.

Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: • disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; • the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; • disruptions or inefficiencies in our supply chain, logistics, or operations; • changes in laws and regulations in jurisdictions where we conduct business, including with respect to plastics and climate change; • fluctuations in raw material prices, quality and supply, and in energy prices and supply; • demand for our products and services; • production outages or material costs associated with scheduled or unscheduled maintenance programs; • unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; • our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; • information systems failures and cyberattacks; • our ability to service our indebtedness and restrictions on our current and future operations due to our indebtedness; • amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; • other factors affecting our business beyond our control, including without limitation, changes in the general economy, changes in interest rates, changes in the rate of inflation, geopolitical conflicts, and any recessionary conditions; and • other factors described in our Annual Report on Form 10-K under Item 1A, “Risk Factors.” All Rights Reserved 2025 12 Disciplined capital allocation PRIORITIZATION AND PHILOSHOPY Capex Expected annual spend between 3-5% of revenue to support investment in organic growth M&A De-emphasized in near term; complement organic growth strategy with M&A over time, as needed 1 2 Dividends Increasing each year with underlying earnings growth 3 Debt pay down Target net debt to adjusted EBITDA less than 2.5x 4 Share repurchases Opportunistic buy backs 5 Copyright © . All Rights Reserved 2025 Full-year 2024 highlights ► 4% organic revenue growth for Avient; 3% for CAI and 6% for SEM ► Adjusted EBITDA margin expanded 20 bps for Avient; 90 bps for CAI and 110 bps for SEM ► New strategy in execution Leadership team strengthened with a new CTO, CIO, General Counsel, SVP (New business development & marketing) in place ► New compensation plan rolled out in January 2025, in direct alignment with the strategy ► 2024 was our safest year on record ► Increased dividend 5% to $1.08 on an annualized basis; 14th consecutive increase FY 2024 results FULL YEAR 2024 VS.