PRODUCT BULLETIN Cesa™ Flame Retardant Additives Cesa™ Flame Retardant Additives allow manufacturers to design with increased confidence for critical flame and smoke applications. Using Cesa Flame Retardant Additives ensures that today’s stringent building safety codes and other regulations are met. Avient makes no warranties or guarantees respecting suitability of either Avient’s products or the information for your process or end-use application.

E-CIGARETTE MANUFACTURER H O U S I N G • Special effect finish • Halogen-free flame-retardant material • High production efficiency • Provided PC formulation with customized speckle effect to meet specific color and surface expectations • Passed UL 94 V-0 flame retardant test at 1.0 mm • Offered better impact strength than competitor‘s PC material, and passed the drop testing • Eased processing with high-flow material Edgetek Engineered Polymer Formulations KEY REQUIREMENTS WHY AVIENT? AVIENT SOLUTION SPECKLE EFFECT+ FLAME RETARDANT LEARN MORE Copyright © 2024, Avient Corporation.

The non-GAAP financial measures include organic performance (which excludes the impact of foreign exchange), adjusted EPS, adjusted operating income, adjusted EBITDA, adjusted EBITDA margins, free cash flow and adjusted free cash flow. Our expanding portfolio of offerings includes colorants, advanced composites, functional additives, engineered materials, and Dyneema®, the world’s strongest fiber™. Rose Vice President, Corporate Communications Avient Corporation +1 440-930-3162 kyle.rose@avient.com 7 Attachment 1 Avient Corporation Summary of Condensed Consolidated Statements of Income (Unaudited) (In millions, except per share data) Three Months Ended December 31, Year Ended December 31, 2024 2023 2024 2023 Sales $ 746.5 $ 719.0 $ 3,240.4 $ 3,142.8 Operating income 85.6 43.1 329.3 196.8 Net income from continuing operations attributable to Avient shareholders 48.3 27.8 169.5 75.8 Diluted earnings per share from continuing operations attributable to Avient shareholders $ 0.52 $ 0.30 $ 1.84 $ 0.83 Senior management uses comparisons of adjusted net income from continuing operations attributable to Avient shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to Avient shareholders, excluding special items, to assess performance and facilitate comparability of results.

Avient does not provide reconciliations of forward-looking non-GAAP financial measures, such as outlook for Adjusted EBITDA, Adjusted Earnings Per Share and Free Cash Flow to the most comparable GAAP financial measures on a forward-looking basis because Avient is unable to provide a meaningful or accurate calculation or estimation of reconciling items and the information is not available without unreasonable effort. FX -11% FX -3% Total Avient -14% YoY Comparison against 2022 pro forma results • Aging infrastructure driving need for greater technological advancements and upgrades • Increased focus on strength and capacity of electrical grid plays into further adoption of composites into the market Where Avient Wins:  UV, weather-resistance, customized capabilities  Best-in-class customer responsiveness  Local high-quality manufacturing, unparalleled breadth of portfolio  Expanding position in insulators, utility poles, crossarms, and wind energy Avient Confidential 15 ENERGY 15 • Fiber-optic investments from AT&T, Corning, Commscope continue to drive industry toward innovation • $42B BEAD program in Infrastructure Bill to increase cable deployments; well-positioned to capitalize on “Made in America” requirement and “last mile” buildout Where Avient Wins:  Flame retardance, weather-resistance enables faster, safer, more reliable connections  Local manufacturing, unparalleled breadth of portfolio  Expanding position in insulation for wire jacketing, 5G buildout TELECOMMUNICATIONS Source: U.S. Further, as a result of Avient's portfolio shift to a pure play specialty formulator, it has completed several acquisitions and divestitures which have resulted in a significant amount of intangible asset amortization.

This is where Avient’s orange nylon colorants can help. Its portfolio of OnColor™ polymer colorants was developed to improve the heat and long-term color stability of cautionary orange polymers for high-voltage EV connectors, offering the following benefits: • Long-term fading resistance in thermal aging tests at up to 130°C for 1,000 hours, • No migration, excellent processing stability • Lower corrosion risk vs. typical comparable colorants • No impact on flame retardancy and limited adverse effects on essential mechanical characteristics, including flexural and impact strength Avient’s orange nylon colorants are available in several validated RAL, Pantone, and JPMA orange shades for compounding, injection molding, and extrusion. APPLICATION BULLETIN MECHANICAL & FLAME-RETARDANT PERFORMANCE 1.844.4AVIENT www.avient.com Copyright © 2024, Avient Corporation.

This includes an expansion of the MagnaColours® ITO range of dyes from Avient Specialty Inks. ZDHC’s goal is to effectively phase out hazardous substances from the textile supply chains. Avient’s team of experts will be on-site at ITMA 2023, June 8-14, exhibiting their dyes, chemicals, finishes, and color & additives for spin-dyeing portfolios throughout the show at Fiera Milano Rho, Hall 5, booth B302, in Milan Italy.

This system is clean and the consistency of colored parts from shot to shot is excellent… We want to purchase more dosers now.” Non-GAAP financial measures have limitations as analytical tools and should not be considered in isolation from, or solely as alternatives to, financial measures prepared in accordance with GAAP. Tax adjustments include the net tax (expense) benefit from one-time income tax items, the set-up or reversal of uncertain tax position reserves and deferred income tax valuation allowance adjustments.

Formulations are available with specialty base resins from several major manufacturers or suppliers. Explore Colorant Chromatics's broad portfolio, markets and applications, and how Avient can provide the highest levels of service (English language version). Metal-free formulations to boost color consistency and increase speed to market

Avient does not provide reconciliations of forward-looking non-GAAP financial measures, such as outlook for Adjusted EBITDA, Adjusted Earnings Per Share and Free Cash Flow to the most comparable GAAP financial measures on a forward-looking basis because Avient is unable to provide a meaningful or accurate calculation or estimation of reconciling items and the information is not available without unreasonable effort. PRIOR YEAR $790 $710 2022 2023 $107 $112 2022 2023 Sales Adjusted EBITDA (in millions) $0.42 $0.47 2022 PF 2023 Adjusted EPS (in millions) - 10% + 5% + 12% Sales Adjusted EBITDA Adjusted EPS 12 $112 $500 Q4 FY $0.47 $2.30 Q4 FY Q4 AND FULL YEAR 2023 GUIDANCE $710 $3,130 Q4 FY Sales Adjusted EBITDA Adjusted EPS 13 (in millions) (in millions) Guidance: Free Cash Flow $180 $180 Prior Guidance Guidance FREE CASH FLOW & INCREASED DIVIDEND 13th Consecutive Dividend Increase 0.16 0.26 0.42 0.58 0.79 0.85 0.99 1.03 2011 2013 2015 2017 2019 2021 2023 2024 14 S U S TAI NABI L I T Y DAY RE CAP SUSTAINABILITY AS A GROWTH DRIVERLONG-TERM REVENUE GROWTH DRIVERS 60%+ Key Growth Drivers Sustainable Solutions Composites, Healthcare, Asia / LATAM Overlap Other (GDP Growth) Total Company Revenue Growth Drivers Long-Term Growth Rate Sustainable Solutions 8–12% Composites 8–10% Healthcare 8–10% Asia / LATAM 5% Other (GDP growth) 0–2% Avient 6% 17 SUSTAINABILITY TRENDS DRIVE LONG-TERM GROWTH 8-12% Long Term Growth 50 90 2022 2030 Medical Plastics Market Size (in $Billions) 2020 2030 Recycled Plastics Virgin Plastics Growing Demand for Recycled Content Avient Sustainable Solutions 18 46 2023 2032 Global Offshore Annual Wind Installations (in Gigawatts) Sources: McKinsey, Bloomberg, Grand View Research SUSTAINABILITY TRENDS DRIVE LONG-TERM GROWTH 18 • Transformative acquisitions combined with divestitures of more cyclical businesses have improved margins over 400 bps since 2018 • 20% long-term margin goal to be driven by key growth drivers, with sustainable solutions playing a meaningful role 5.4% 11.5% 16.0% 2006 2018 2023E Recovery Growth Drivers Strategic Objective 20%+ +1%+ +3%+ ADJUSTED EBITDA MARGIN EXPANSION 19 • 6% annualized long-term sales growth leveraging sustainable solutions, composites, healthcare, and emerging regions • Expand EBITDA margins to 20% • Deliver annual EBITDA and EPS growth of 10% and 15% • Maintain asset-light, 80% free cash flow conversion profile and be valued as a specialty formulator • Continue fostering our Great Place to Work® culture CREATING A WORLD-CLASS SUSTAINABLE ORGANIZATION 20 Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) Senior management uses comparisons of adjusted net income from continuing operations attributable to Avient shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to Avient shareholders, excluding special items, to assess performance and facilitate comparability of results. Further, as a result of Avient's portfolio shift to a pure play specialty formulator, it has completed several acquisitions and divestitures which have resulted in a significant amount of intangible asset amortization.

ColorMatrix™ Amosorb™ 4020R addresses this performance issue and is the latest in a portfolio of solutions Avient has developed to enable high-quality recycled packaging. Capture is added to the bottle closure, effectively removing the barrier from the bottle. In addition, the additive is compatible with many different rPET grades to help brand owners achieve their sustainability targets.