PREPERM™ thermoplastics offer a wide variety of solutions for various SatCom applications: aerospace, maritime, other moving vehicles and GPS. PREPERM™ Solutions for Satellite Communications APPLICATION BULLETIN DIELECTRIC SUBSTRATES PREPERM low-loss antenna substrates improve the antenna bandwidth and gain compared to common materials. PREPERM materials are used in a wide range of industries Whether you operate in the field of telecom and 5G, automotive or industrial radars, or satellite communications, we have a solution for you.

High-quality conductive pipette tips must meet a number of demanding performance criteria, including: • Accurate measurement of minute quantities of liquid • Hydrophobic properties to minimize fluid retention • Concentric dimensions and warp resistance • Excellent chemical resistance The manufacturer asked Avient for a specialized solution to meet these exacting needs in a timely and efficient manner so they could capitalize on its market opportunity THE SOLUTION Avient’s sales and technical professionals worked closely with the manufacturer to understand the demanding requirements of the end-use application, manufacturing considerations and cost. Through customer intimacy, Avient’s Trilliant HC formulations offered an effective solution that allowed the manufacturer to improve its bottom line and increase its operating income.

The need for better PC color solutions has never been greater. This solution offers better color consistency and better color dispersion in transparent PC resins, helping to retain transparent properties and preventing contamination by keeping production lines clean. KEY CHARACTERISTICS • More accurate dosage on a small-scale leading to better color consistency • Better color dispersion in transparent PC resin compared to pigments, helping to retain transparent properties • Prevents contamination by keeping cleanliness in production lines often found with powders • Lower inventory, easier supply chain management • Better cost effectiveness with lower dosage • Prevents undesirable yellowness/greenness in PC chips • Supports sustainability through improved color and material changeover time • Liquid solution reduces dosage compared to alternatives PRODUCT BULLETIN www.avient.com Copyright © 2021, Avient Corporation.

A SOLUTION FOR TAKING CONTROL CASE STUDY: EXCELITE™ CHEMICAL FOAMING ADDITIVES Challe nge Accepted. THE SOLUTION The Avient technical team leveraged its expertise in liquid colorants and chemical additives to scientifically engineer its line of ColorMatrix™ Excelite™ chemical foaming additives (CFAs) for PVC processing. For these processors Excelite was established as the lowest total cost-to- manufacture solution.

Cesa™ Anti-fog Plus Additives for Multilayer Films We buy with our eyes and this is no truer than wanting to see the food we purchase, especially fresh perishable foods.Cesa™ Anti-fog Plus solutions are the next generation additives, which work in both hot and cold fog conditions and in mono and multilayer film, to keep food attractive for longer. Adding an anti-fog solution to film delivers value to brand owners and film manufacturers in multiple ways: Reduce operating cost: Anti-fog plus additives are a drop-in solution.

More and more convertors and brand owners working with flexible film products are seeking materials and solutions that permit them to work with mono-material compositions for their packaging options, as mono-materials are easier to recycle and therefore contribute to a circular economy over time. KEY FEATURES • Enables the transition from complex, multi- material flexible packaging to recyclable mono- material solutions • Provides anti-block and slip functionalities for low-temperature sealing layers • Helps to eliminate non-compatible film layers in food packaging • Improves yield during sorting and enhances post-consumer recyclate (PCR) quality, helping to reduce waste • Compatible with polyolefins and seamlessly integrates into existing film extrusion processes MARKETS & APPLICATIONS Cesa Anti-Block Slip LS is used in various applications in flexible polyolefin food packaging, including bags and pouches, lidding films, and lamination films. For more information about Cesa™ Anti-Block Slip LS and how it can enhance your flexible packaging solutions, please contact Avient.

Purchase price multiple rapidly declining on strength of business and synergy capture 7 $133 $201 2019PF 2022E 7 Clariant Color EBITDA Growth Purchase Price Multiple 10.8x 7.0x 6.4x 2019PF 2021 2022E w/ Full Synergies 11.9% 16.3% 2019PF 2022E EBITDA Margins CLARIANT COLOR: TRANSFORMATIONAL ACQUISITION (1) Financial information is pro forma to include a full year of Clariant Color business SUNBELT PVC Resins DSS 20 Acquisitions $4.8B Investment $2.7B of Annual Revenue 5 Divestments $2.3B Proceeds TPE PP&S HISTORIC SPECIALIZATION THROUGH M&A 8 Distribution DSM Protective Materials BOLT-ON ACQUISITION HISTORY 9 Commercial Resources Operating Income Operating Margins 259 363 $40 $139 Established Acquisitions (> 7 years) + 40% + 248% + 1300 bps I N V E S T T O G R O W SPECIALTY TRANSFORMATION T O D A Y 46% 67% 86% 100% 0% 60% 80% 100% 2005 2010 2019 2021 2022 PF % o f A d ju st ed E B IT D A • Commodity JVs • Distribution • Performance Products & Solutions • Specialty Businesses (1) Adjusted EBITDA is EBITDA excluding corporate costs and special items (2) Pro forma for the acquisition of Dyneema® and divestiture of Distribution (1 ) (2) 10 Building & 43% 14% Telecom. 2% 2006 2022 Pro Forma 21% Building & Telecom. EBITDA Margins • Focus on organic growth combined with transformative and bolt-on acquisitions • Divested commodity businesses tied to more cyclical end markets • Expanded presence in high growth areas of sustainable solutions, specialty healthcare applications, composites and more resilient end markets 5.4% 11.5% 16.1% 2006 2018 2022PF $142 $408 $585 2006 2018 2022PF 2006 figures exclude joint venture results 14 RETURNING CASH TO SHAREHOLDERS Growing Dividend 0.1 0.1 0.2 0.5 0.6 0.7 0.8 0.9 0.9 1.0 1.0 1.0 11 12 13 14 15 16 17 18 19 20 21 22 0.16 0.20 0.26 0.34 0.42 0.50 0.58 0.72 0.79 0.81 0.85 0.95 0.99 11 12 13 14 15 16 17 18 19 20 21 22 23 ~$1Bn REPURCHASED OVER LAST 11 YEARS ~$550MM PAID OVER LAST 11 YEARS Dividends Share Repurchases Cumulative Buybacks $B n $ p e r sh ar e 2022 PRO FORMA ADJUSTED EPS Earnings Growth Expanding Profitability $0.15 $1.09 $2.08 $2.67 2009 2012 2015 2018 2022PF T H IR D Q UART ER 2022 RE S U LTS $110 $119 $0.61 $0.59 Q3 2022 PERFORMANCE (TOTAL COMPANY CONT. Three Months Ended September 30, 2022 Three Months Ended September 30, 2021 Reconciliation to Condensed Consolidated Statements of Income $ EPS $ EPS Net (loss) income from continuing operations attributable to Avient shareholders $ (27.4) $ (0.30) $ 33.7 $ 0.37 Special items, after tax (Attachment 3) 68.3 0.75 11.7 0.13 Amortization expense, after-tax 13.4 0.14 $ 11.0 $ 0.11 Adjusted net income / EPS $ 54.3 $ 0.59 $ 56.4 $ 0.61 2009* 2012* 2015 2018 Net income from continuing operations attributable to Avient common shareholders $ 106.7 $ 53.3 $ 144.6 $ 161.1 Joint venture equity earnings, after tax (19.0) — — — Special items, before tax (48.7) 55.1 87.6 59.5 Special items, tax adjustments (27.2) (18.9) (58.7) (25.3) Amortization expense, after tax 1.8 8.3 10.4 19.5 Adjusted net income from continuing operations attributable to Avient common shareholders $ 13.6 $ 97.8 $ 183.9 $ 214.8 Diluted shares 93.4 89.8 88.7 80.4 Adjusted EPS attributable to Avient common shareholders $ 0.15 $ 1.09 $ 2.08 $ 2.67 * Historical results have been updated to reflect subsequent changes to accounting principle and discontinued operations, excluding any changes as a result of discontinued operations from the sale of the Designed Structures and Solutions segment (DSS) and the Performance Products and Solutions segment (PP&S). 1 Year Ended December 31, Reconciliation to EBITDA and Adjusted EBITDA: 2006 2018 Sales $ 2,622.4 $ 3,533.4 Net income from continuing operations – GAAP $ 133.5 $ 160.8 Income tax expense 29.7 36.4 Interest expense 63.1 62.8 Depreciation and amortization 57.1 91.5 EBITDA $ 283.4 $ 351.5 Special items, before tax (34.0) 59.5 Depreciation and amortization included in special items — (3.0) JV - equity income (107.0) — Adjusted EBITDA $ 142.4 $ 408.0 EBITDA as a % of sales 5.4 % 11.5 % Reconciliation of Color, Additives and Inks EBITDA Operating Income 68.6 66.8 Depreciation and amortization 24.2 26.6 EBITDA 92.8 $ 93.4 Reconciliation of Specialty Engineered Materials EBITDA SEM(1) Pro forma APM(1) Pro forma SEM SEM Pro forma APM Pro forma SEM Operating Income 31.4 6.3 37.7 30.0 13.9 43.9 Depreciation and amortization 12.9 10.9 23.8 7.9 18.4 26.3 EBITDA $ 44.3 $ 17.2 $ 61.5 $ 37.9 $ 32.3 $ 70.2 Reconciliation of Specialty Engineered Pro Forma Sales Sales 258.2 231.7 Pro forma APM(1) 60.7 94.1 Pro forma sales $ 318.9 $ 325.8 Reconciliation of Avient Pro Forma Sales Sales 823.3 818.0 Pro forma APM(1) 60.7 94.1 Pro forma sales $ 884.0 $ 912.1 (1) - Q3 2022 SEM results reflect one month of APM’s results while owned by Avient, as the acquisition closed on September 1, 2022.

SPORTS BRAND S N O R K E L M O U T H P I E C E • Replace PVC with alternative materials such as TPE or silicone • Skin contact safety and UV resistance • Soft texture with a non-sticky feel • Translucent color to help children use it properly and safely • Customized a soft (Shore A) TPE solution that passed strict tests, including thermal deformation (80°C for 2 hours), UV resistance, and assembly resistance • Providing a 40% more cost-effective system than silicone due to the high production efficiencies of TPEs • Provided cross-regional cooperation and prompt response to help customers achieve fast commercialization in both Europe and China Versaflex Thermoplastic Elastomers UV RESISTANT + TRANSLUCENT Copyright © 2025, Avient Corporation. KEY REQUIREMENTS AVIENT SOLUTION WHY AVIENT?

TIER 1 AEROSPACE SUPPLIER S E A T I N G S T R U C T U R A L C O M P O N E N T • Reduce weight to improve fuel economy • Pass FAA flame, smoke, toxicity requirements • Meet structural requirements • Simplify manufacturing process • Lowered weight ~40% versus aluminum while maintaining the strength performance properties • Formulated a PES material to satisfy flame, smoke, toxicity (FST) standards for commercial aircraft • Passed and/or exceeded customer’s impact testing specifications • Provided an injection moldable hybrid glass/carbon fiber solution that enabled lower viscosity and better processability for thin wall parts Complēt™ Long Hybrid (Carbon + Glass) Fiber Reinforced PES Composite KEY REQUIREMENTS WHY AVIENT? AVIENT SOLUTION LIGHTWEIGHTING + METAL REPLACEMENT LEARN MORE Copyright © 2023, Avient Corporation.

REINFORCED THERMOPLASTIC PIPE F O R O I L + G A S • Reinforcement for HDPE pipe to meet the performance of traditional steel pipe for oil and gas applications • Temperature performance up to 65˚C with operating pressure up to 1500 psi • Spoolable, lightweight material to simplify transport and installation • Provided material compatibility with HDPE and added reinforcement to meet burst strength requirements • Customized tape thickness to meet specific processing needs • Ensured supply chain reliability with fast delivery and quality control in North America • Flexible, reinforced plastic solution enabled spoolable pipe and reduced weight Polystrand™ Continuous Glass Fiber Reinforced Polyethylene Tape KEY REQUIREMENTS WHY AVIENT? AVIENT SOLUTION STRONG – DURABLE – LIGHTWEIGHT LEARN MORECopyright © 2021, Avient Corporation.