Learn about the benefits of using ColorMatrix™ Lactra™ Four, One, Zero in PET dairy and dairy-alternative packaging

This is due to the inherent difficulty of forecasting the timing and amount of certain items, such as, but not limited to, mark-to-market adjustments associated with benefit plans, environmental remediation costs, acquisition-related costs, and other non-routine costs. GUIDANCE $800 $754 Guidance Actual $128 $123 Guidance Actual Sales Adjusted EBITDA (in millions) $0.56 $0.57 Guidance Actual Adjusted EPS (in millions) 9 • Demand impacted by destocking and cautious customer sentiment • Positive net price benefit: o CAI - Pricing flat and raw material deflation o SEM - Pricing flat with unfavorable mix related to healthcare, more than offset with raw material deflation • Cost reductions driven by Clariant synergies and reduced administrative costs Q3 EBITDA BRIDGE ($ millions) CAI: Price / Mix -) Deflation 22) SEM: Price / Mix (6) Deflation 13) Net Price Benefit 29) Cost Reductions 13) Wage Inflation (8) FX 1) Q3 2023 Actual $ 123) Adjusted EBITDA Q3 2022 Pro Forma $ 137) Demand (49) 10 2023 G U I DAN CE Q4 2023 GUIDANCE VS. Three Months Ended September 30, 2023 Three Months Ended September 30, 2022 Reconciliation to Condensed Consolidated Statements of Income: $ EPS $ EPS Net income (loss) from continuing operations attributable to Avient shareholders $ 5.1 $ 0.06 $ (27.4) $ (0.30) Special items, after tax 32.0 0.35 68.3 0.75 Amortization expense, after-tax 15.2 0.16 $ 13.4 $ 0.14 Adjusted net income / EPS $ 52.3 $ 0.57 $ 54.3 $ 0.59 Three Months Ended September 30, Reconciliation to EBITDA and Adjusted EBITDA: 2023 2022 Sales - GAAP $ 753.7 $ 823.3 Pro Forma APM adjustments — 60.7 Pro forma adjusted sales $ 753.7 $ 884.0 Net income from continuing operations – GAAP $ 5.1 $ (27.8) Income tax (benefit) expense (0.1) (1.2) Interest expense, net 30.3 37.3 Depreciation and amortization 46.4 39.8 EBITDA from continuing operations $ 81.7 $ 48.1 Special items, before tax 43.2 82.0 Interest expense included in special items (2.2) (10.0) Depreciation and amortization included in special items — (0.8) Adjusted EBITDA $ 122.7 $ 119.3 Pro forma APM adjustments — 17.2 Pro forma adjusted EBITDA $ 122.7 $ 136.5 Pro forma adjusted EBITDA as a % of sales 16.3 % 15.4 % 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, net 63.1 62.8 Depreciation and amortization 57.1 91.5 EBITDA from continuing operations $ 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 Adjusted EBITDA as a % of sales 5.4 % 11.5 % Reconciliation to EBITDA and Adjusted EBITDA: Three Months Ended December 31, 2022 Net loss from continuing operations – GAAP $ (16.6) Income tax benefit (60.8) Interest expense, net 49.4 Depreciation and amortization 48.6 EBITDA from continuing operations $ 20.6 Special items, before tax 104.3 Interest expense included in special items (16.0) Depreciation and amortization included in special items (1.5) Adjusted EBITDA $ 107.4 Reconciliation of Pro Forma Adjusted Earnings per Share: Three Months Ended December 31, 2022 Net loss from continuing operations attributable to Avient shareholders $ (17.0) Special items, after tax 38.3 Amortization expense, after-tax 14.6 Adjusted net income from continuing operations excluding special items 35.9 Pro forma adjustments* 2.5 Pro forma adjusted net income from continuing operations attributable to Avient shareholders $ 38.4 Weighted average diluted shares 91.7 Pro forma adjusted EPS - excluding special items pro forma for APM acquisition $ 0.42 * Pro forma adjustment to reflect APM results for the period before Avient ownership including the impacts of debt financing and paydown of debt with net proceeds from the Distribution sale. 2 AVNT Q3 2023 Earnings Presentation Avient corporation�Third quarter 2023 results DISCLAIMER Slide Number 3 Avient protective materials �First Year Slide Number 5 Slide Number 6 Slide Number 7 Slide Number 8 Slide Number 9 Slide Number 10 Slide Number 11 Slide Number 12 Slide Number 13 Slide Number 14 Slide Number 15 Slide Number 16 Slide Number 17 Slide Number 18 Slide Number 19 Slide Number 20 Slide Number 21 IR Deck - AVNT-2023.09.30 Non GAAP Recs Attachment

Through this program, we hope to introduce businesses of all sizes to the benefit of aramid fibers. Over the last several years, FIBER-LINE® and DuPont™ have formed a strong partnership based upon the synergies between both organizations. • FIBER-LINE®’s ability to add value to the already attractive properties of both Kevlar®Para-Aramid & Nomex® Meta-Aramid creates more opportunity in the market place to provide solution driven products to a diverse range of markets. • Because FIBER-LINE® already processes so many dif- ferent types and deniers of both Kevlar® & Nomex®, we have been authorized by DuPont™ to distribute small quantities of these fibers to an ever-growing customer base. • Through this program, we hope to introduce busi- nesses of all sizes to the benefit of Aramid fibers.

LOW HAZE The new 4020G grade of ColorMatrix Amosorb offers similar oxygen scavenging performance as previous solutions with the added benefit of up to 50% lower haze, resulting in improved clarity and clearer looking bottles. PRODUCT BULLETIN KEY BENEFITS • Non-nylon based • Up to 50% lower haze • Lower impact on PET recycle stream • 40% increased shelf-life at maximum allowable use limit • No induction period, provides immediate protection • Can be used with any PET & most rPET grades • Simple to use with existing mono- layer equipment • Suitable for use on multi-layer machines MARKET & APPLICATIONS • PET and rPET rigid packaging for food and beverage REGULATORY ColorMatrix Amosorb 4020G meets direct food contact regulatory requirements in major markets.

Suitable for PET and rPET preforms and bottles, it can be added to preforms providing the following benefits: • Improved blowing performance • Potential for increased rPET content • Increased mechanical strength • Potential for lightweighting • Improved performance through the recycle process • Reduced energy consumption • No pre-drying requirements SmartHeat RHC can contribute towards improved productivity, reduced manufacturing costs, improved sustainability, and can broaden the scope for bottle design. Its benefits are realized only with transparent preforms in a 2-stage injection stretch blow-molding process.

In addition to weight reduction and raw material savings, Hydrocerol CFAs can provide several other benefits that include: • thermal and acoustic insulation • increased stiffness-to-weight ratio • elimination of warpage and sink marks • more efficient processing Automotive Hydrocerol Chemical Foaming Agents are particularly recommended for lightweighting projects. Durable Goods Injection-molded durable goods can also benefit from the lightweighting effect of chemical foaming agents, especially products used in shipment and freight such as crates, boxes, and pallets, but also products such as brushes and toys.

With their unique properties and benefits, our PP solutions can meet the evolving demands of the industry, providing manufacturers with the tools they need to innovate and excel. BENEFITS OF THE CHEMICAL FOAMING PROCESS • Standard equipment compatibility: Maxxam formulations can be processed using standard extrusion equipment, eliminating the need for specialized machinery • Chemical foaming formulation: No investment in gas injection systems or procurement of gas is required • High foaming rates: Achieve up to a 60% foaming rate, optimizing material properties while maintaining performance • Adapted temperature profile: These foamable grades are formulated to work effectively within a tailored temperature profile, offering consistent quality MAXXAM PP COPOLYMERS ARE SPECIALLY FORMULATED TO DELIVER • High-temperature performance: Suitable for applications requiring resistance to elevated temperatures • High foaming rate for cellular formulations: Contributes to better electrical properties due to low density • Excellent mechanical properties: Provides durability and reliability in demanding environments KEY CHARACTERISTICS OF CELLULAR PP FORMULATIONS • Fully formulated PP: no need for other additives • Can be based on chemical foaming agents which are not hazardous substances for a sustainable production process • No need for gas injection • Excellent surface finish and uniform cell structure • Excellent electrical properties to reach stringent capacitance • Low shrinkage • Adapted for skin-foam-skin or foam-skin design • Higher temperature resistance compared to PE • Good crush resistance MARKETS & APPLICATIONS IN WIRE & CABLE • Communication cables such as telecom and data cables • Twisted wire pairs • Coaxial cables

Other Aspects of Our Compensation Programs COMPENSATION DISCUSSION AND ANALYSIS Retirement Benefits Other Benefits. Name Company Contributions to Qualified Savings Plan ($) Company Contributions to PolyOne Supplemental Retirement Benefit Plan ($) Tax Gross-Ups ($) Other Benefits ($) J.R. Rathbun EXECUTIVE COMPENSATION Company Contributions to PolyOne Supplemental Retirement Benefit Plan.

regions benefited largely from restocking and share gains, particularly in the packaging end market." Income tax benefit on above special items Pension and other post-retirement benefits

Income tax benefit on above special items Pension and other post-retirement benefits Decrease in pension and other post-retirement benefits