When exposed to a light source for 10 minutes, this new generation of heat-preservation additives can provide a temperature increase from 6°C to 12°C for PET and PA fibers based on different let-down-ratio and textile structure. KEY CHARACTERISTICS • Offers reheating property for synthetic fibers with specialty formulations • Provides a temperature increase of up to 12°C when exposed to a light source for 10 minutes • Good spinnability • Lower impact on the color APPLICATIONS Cesa Fiber Additives are intended for use in: • Clothing: hoodie, sweater, jacket, ski clothing, thermal underwear, etc. • Home textile: bedding, blankets, etc. • Technical fabrics for thermal insulation PRODUCT BULLETIN Copyright © 2023, Avient Corporation.

Based on industry averages, a leather armrest typically adds $30 to the cost of producing a single door, while the approximate cost of a slush molded vinyl armrest is about $10 per door. Additionally, it was projected that scrap rates were reduced by at least 10% over competitive materials.

Newark, New Jersey 10. Remi de Napierville, 10. OTHER INFORMATION PART III ITEM 10.

Buyer acknowledges that Seller has furnished to Buyer Material Safety Data sheets, which include warnings together with safety and health information concerning the Product and/or the containers for such Product. 10. Except in the case of a force majeure, if not satisfied with Seller’s determination, Buyer as its sole remedy shall have a right to terminate this contract without further obligation upon: (i) 10 days written notice; and (ii) payment for all Product received to date. 12. Exceto em caso de força maior, se não satisfeito com a determinação do Vendedor, o Comprador como único recurso terá o direito de rescindir este contrato sem qualquer outra obrigação mediante: (i) notificação escrita com antecedência de 10 dias; e (ii) pagamento de todos os Produtos recebidos até aquela data. 13.

Avient's investor day will be held at the New York Stock Exchange beginning at 10:00 a.m. eastern standard time. You are advised to consult any further disclosures we make on related subjects in our reports on Form 10-Q, 8-K and 10-K that we provide to the Securities and Exchange Commission. 5 Investor Relations Contact: Giuseppe (Joe) Di Salvo Vice President, Treasurer and Investor Relations Avient Corporation +1 440-930-1921 giuseppe.disalvo@avient.com Media Contact: Kyle G. Three Months Ended September 30, 2024 2023 Reconciliation to Condensed Consolidated Statements of Income $ EPS(1) $ EPS(1) Net income from continuing operations attributable to Avient shareholders $ 38.2 $ 0.41 $ 5.1 $ 0.06 Special items, after-tax (Attachment 3) 6.6 0.07 32.0 0.35 Amortization expense, after-tax 15.0 0.16 15.2 0.16 Adjusted net income / EPS $ 59.8 $ 0.65 $ 52.3 $ 0.57 (1) Per share amounts may not recalculate from figures presented herein due to rounding Nine Months Ended September 30, 2024 2023 Reconciliation to Condensed Consolidated Statements of Income $ EPS(1) $ EPS(1) Net income from continuing operations attributable to Avient shareholders $ 121.2 $ 1.32 $ 48.0 $ 0.52 Special items, after-tax (Attachment 3) 33.9 0.37 73.9 0.81 Amortization expense, after-tax 44.7 0.49 46.5 0.51 Adjusted net income / EPS $ 199.8 $ 2.17 $ 168.4 $ 1.84 (1) Per share amounts may not recalculate from figures presented herein due to rounding 7 Attachment 2 Avient Corporation Condensed Consolidated Statements of Income (Unaudited) (In millions, except per share data) Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Sales $ 815.2 $ 753.7 $ 2,493.9 $ 2,423.8 Cost of sales 553.8 558.4 1,696.7 1,740.2 Gross margin 261.4 195.3 797.2 683.6 Selling and administrative expense 184.2 161.0 553.5 529.9 Operating income 77.2 34.3 243.7 153.7 Interest expense, net (26.9) (30.3) (80.1) (88.5) Other (expense) income, net (0.3) 1.0 (2.1) 1.5 Income from continuing operations before income taxes 50.0 5.0 161.5 66.7 Income tax (expense) benefit (11.3) 0.1 (39.3) (18.0) Net income from continuing operations 38.7 5.1 122.2 48.7 Loss from discontinued operations, net of income taxes — — — (0.9) Net income $ 38.7 $ 5.1 $ 122.2 $ 47.8 Net income attributable to noncontrolling interests (0.5) — (1.0) (0.7) Net income attributable to Avient common shareholders $ 38.2 $ 5.1 $ 121.2 $ 47.1 Earnings (loss) per share attributable to Avient common shareholders - Basic: Continuing operations $ 0.42 $ 0.06 $ 1.33 $ 0.53 Discontinued operations — — — (0.01) Total $ 0.42 $ 0.06 $ 1.33 $ 0.52 Earnings (loss) per share attributable to Avient common shareholders - Diluted: Continuing operations $ 0.41 $ 0.06 $ 1.32 $ 0.52 Discontinued operations — — — (0.01) Total $ 0.41 $ 0.06 $ 1.32 $ 0.51 Cash dividends declared per share of common stock $ 0.2575 $ 0.2475 $ 0.7725 $ 0.7425 Weighted-average shares used to compute earnings per common share: Basic 91.3 91.1 91.3 91.1 Diluted 92.3 91.9 92.0 91.8 8 Attachment 3 Avient Corporation Summary of Special Items (Unaudited) (In millions, except per share data) Special items (1) Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Cost of sales: Restructuring costs, including accelerated depreciation $ 1.8 $ (2.1) $ 5.6 $ (9.9) Environmental remediation costs (2.4) (38.1) (28.2) (52.5) Impact on cost of sales (0.6) (40.2) (22.6) (62.4) Selling and administrative expense: Restructuring and employee separation costs (3.1) (2.0) (6.6) (13.8) Legal and other (4.3) 1.7 (10.1) (9.1) Acquisition related costs (0.4) (0.5) (2.5) (4.6) Impact on selling and administrative expense (7.8) (0.8) (19.2) (27.5) Impact on operating income (8.4) (41.0) (41.8) (89.9) Interest expense, net - financing costs (1.3) (2.2) (2.3) (2.2) Other income (loss) — — 0.1 (0.1) Impact on income from continuing operations before income taxes (9.7) (43.2) (44.0) (92.2) Income tax benefit on special items 3.5 10.8 11.9 23.2 Tax adjustments(2) (0.4) 0.4 (1.8) (4.9) Impact of special items on net income from continuing operations $ (6.6) $ (32.0) $ (33.9) $ (73.9) Diluted earnings per common share impact $ (0.07) $ (0.35) $ (0.37) $ (0.81) Weighted average shares used to compute adjusted earnings per share: Diluted 92.3 91.9 92.0 91.8 (1) Special items include charges related to specific strategic initiatives or financial restructuring such as: consolidation of operations; debt extinguishment costs; costs incurred directly in relation to acquisitions or divestitures; employee separation costs resulting from personnel reduction programs, plant realignment costs, executive separation agreements; asset impairments; settlement gains or losses and mark-to- market adjustments associated with gains and losses on pension and other post-retirement benefit plans; environmental remediation costs, fines, penalties and related insurance recoveries related to facilities no longer owned or closed in prior years; gains and losses on the divestiture of operating businesses, gains and losses on facility or property sales or disposals; results of litigation, fines or penalties, where such litigation (or action relating to the fines or penalties) arose prior to the commencement of the performance period; one-time, non- recurring items; and the effect of changes in accounting principles or other such laws or provisions affecting reported results. (2) Tax adjustments include the net tax impact from non-recurring income tax items and certain adjustments to uncertain tax position reserves and valuation allowances. 9 Attachment 4 Avient Corporation Condensed Consolidated Balance Sheets (In millions) (Unaudited) September 30, 2024 December 31, 2023 ASSETS Current assets: Cash and cash equivalents $ 505.7 $ 545.8 Accounts receivable, net 465.1 399.9 Inventories, net 377.8 347.0 Other current assets 108.8 114.9 Total current assets 1,457.4 1,407.6 Property, net 973.5 1,028.9 Goodwill 1,716.8 1,719.3 Intangible assets, net 1,542.5 1,590.8 Deferred income taxes 133.1 92.3 Other non-current assets 224.0 129.6 Total assets $ 6,047.3 $ 5,968.5 LIABILITIES AND SHAREHOLDERS' EQUITY Current liabilities: Short-term and current portion of long-term debt $ 7.8 $ 9.5 Accounts payable 425.9 432.3 Accrued expenses and other current liabilities 460.8 331.8 Total current liabilities 894.5 773.6 Non-current liabilities: Long-term debt 2,059.9 2,070.5 Pension and other post-retirement benefits 63.7 67.2 Deferred income taxes 289.1 281.6 Other non-current liabilities 359.9 437.6 Total non-current liabilities 2,772.6 2,856.9 SHAREHOLDERS' EQUITY Avient shareholders’ equity 2,363.0 2,319.2 Noncontrolling interest 17.2 18.8 Total equity 2,380.2 2,338.0 Total liabilities and equity $ 6,047.3 $ 5,968.5 10 Attachment 5 Avient Corporation Condensed Consolidated Statements of Cash Flows (Unaudited) (In millions) Nine Months Ended September 30, 2024 2023 Operating activities Net income $ 122.2 $ 47.8 Adjustments to reconcile net income to net cash provided by operating activities: Depreciation and amortization 133.1 142.6 Accelerated depreciation 1.2 1.9 Share-based compensation expense 12.5 9.7 Changes in assets and liabilities: Increase in accounts receivable (65.7) (5.7) (Increase) decrease in inventories (30.2) 16.5 Decrease in accounts payable (5.7) (59.1) Taxes paid on gain on sale of business — (104.1) Accrued expenses and other assets and liabilities, net (33.2) (2.5) Net cash provided by operating activities 134.2 47.1 Investing activities Capital expenditures (80.8) (75.0) Net proceeds from divestiture — 7.3 Proceeds from plant closures 3.4 — Other investing activities (2.1) 2.3 Net cash used by investing activities (79.5) (65.4) Financing activities Proceeds from long-term borrowings 650.0 — Payments on long-term borrowings (659.1) (103.8) Cash dividends paid (70.5) (67.6) Debt financing costs (9.6) (2.3) Other financing activities (4.6) (2.3) Net cash used by financing activities (93.8) (176.0) Effect of exchange rate changes on cash (1.0) (7.2) Decrease in cash and cash equivalents (40.1) (201.5) Cash and cash equivalents at beginning of year 545.8 641.1 Cash and cash equivalents at end of period $ 505.7 $ 439.6 11 Attachment 6 Avient Corporation Business Segment Operations (Unaudited) (In millions) Operating income and earnings before interest, taxes, depreciation and amortization (EBITDA) at the segment level does not include: special items as defined in Attachment 3; corporate general and administration costs that are not allocated to segments; intersegment sales and profit eliminations; share-based compensation costs; and certain other items that are not included in the measure of segment profit and loss that is reported to and reviewed by the chief operating decision maker.

ACTIVE INGREDIENT RELEVANT INGREDIENTS CaviCide™ 46781-6 Quaternary Ammonium Isopropanol 2-Butoxyethanol Super Sani-Cloth® 9480-4 Quaternary Ammonium Isopropanol SporGon™ N/A Hydrogen Peroxide Peracetic Acid N/A Vesphene® IIse 1043-87 2-Phenylphenol 4-Tert-Amylphenol Potassium Hydroxide Sodium Hydroxide Virex® TB 70627-2 Quaternary Ammonium Diethylene Glycol Butyl Ether Clorox® Disinfecting Wipes 5813-79 Quaternary Ammonium Hexoxyethanol Isopropanol Ethoxylated Alcohols Lysol® All-Purpose Cleaner 67619-10 Quaternary Ammonium 1-Phenoxy-2-Propanol Ethanolamine Dipropylene Glycol Formula 409® Heavy Duty Degreaser N/A N/A Propylene Glycol Butyl Ether Ethanolamine Table 1. Plastics Engineering 2015, 71 (10), 30–36.

This agreement would Avient CDP Climate Change Questionnaire 2021 Tuesday, August 3, 2021 10 be equal to approximately 90% of our annual European electricity needs. In 2020 alone we launched 10 new sustainable product families. 100% of Avient’s R&D budget is used to address customer demand, which increasingly Avient CDP Climate Change Questionnaire 2021 Tuesday, August 3, 2021 25 includes sustainable solutions. ISIN country code (2 letters) ISIN numeric identifier and single check digit (10 numbers overall) Row 1 US 05368V1061 SC1.1 (SC1.1) Allocate your emissions to your customers listed below according to the goods or services you have sold them in this reporting period.

APPLICATION BULLETIN FILTER GRADE FILTRATION EFFICIENCY EPA 10/E10 85% EPA 11/E11 95% HEPA H12 99.5% HEPA H13 99.97% HEPA H14 99.975% HEPA H15 99.9975% HEPA H16 99.99975% ULPA H17 99.9999% EPA: efficient particulate air filtration HEPA: high efficiency particulate air filter ULPA: ultra-low penetration air filter www.avient.com Copyright © 2021, Avient Corporation.

On its manufacturing lines, the transition to Colorant Chromatics fluoropolymer color concentrates helped slash its scrap rate from 10% to less than 5%.

A RANGE OF WORLD-CLASS SERVICES COLOR TECHNOLOGY Custom matching, saturated colors, and special effects to fill market niches, eliminate secondary operations, and strengthen your brand PCR COLOR PREDICTION SERVICE Digital prediction tool illustrating color possibilities and limitations of post-consumer recycled (PCR) content to simplify decision making and shorten time to launch PRODUCT CARBON FOOTPRINT (PCF) CALCULATOR Methodology that evaluates the carbon footprint of Avient solutions, contributing a data point to your overall carbon footprint and supporting credible reporting AVIENT DESIGN A highly specialized group of industrial designers and project engineers that provides advanced design and detailed analysis to foster higher levels of innovation TESTING AND VALIDATION Fully accredited and in-house testing capabilities to generate data for insight into material behavior, environmental effects, and more REGULATORY SUPPORT Dedicated product stewardship team assisting with new product approvals to reduce regulatory overhead and minimize risk COLOR AND ADDITIVE DESIGN SERVICES Trend and color insights along with product development assistance from concept through commercialization to optimize design and gain speed to market RESEARCH AND DEVELOPMENT Long-term strategic solution development that addresses complex and unmet product innovation needs APPLICATION DEVELOPMENT TECHNICAL SUPPORT Technical experts specifically trained to work directly with your team to solve definitive application challenges with new or existing approaches FIELD TECHNICAL SERVICE Onsite support for tool design, startup, and production optimization to gain manufacturing efficiencies and help resolve technical issues Common compliance categories where we can assist: • UL • USP Class VI • ISO 10993 • ISO 1345 • REACH • RoHS • FDA • EU 10/2011 • China GB • MERCOSUR • USP • ISP • CPSIA • Prop 65 ColorWorks™ Design & Technology Centers Our global ColorWorks centers are focused on design, technology, and innovation for plastics.