All sales to customers should be based on price, terms and the quality of the product and service to be provided. We choose our suppliers based on objective criteria, such as quality, service and price and the business benefits to Avient and our customers. http://Avient.com/sustainability 25 Product and Service Safety It is essential that Avient provide safe products and services that retain the confidence of our customers, fulfill our responsibilities to the public and maintain a competitive position in the marketplace.

They are based on management’s expectations that involve a number of business risks and uncertainties, any of which could cause actual results to differ materially from those expressed in or implied by the forward-looking statements. GUIDANCE $800 $754 $128 $123 Sales Adjusted EBITDA $0.56 $0.57 Adjusted EPS 9 • Demand impacted by destocking and cautious customer sentiment • Positive net price benefit: o CAI - Pricing flat and raw material deflation o SEM - Pricing flat with unfavorable mix related to healthcare, more than offset with raw material deflation • Cost reductions driven by Clariant synergies and reduced administrative costs Q3 EBITDA BRIDGE ($ 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 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: 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

Product/Service Overview Innovative Office Furniture Task Chair Discover the comprehensive technical services available through Specialty Engineered Materials at Avient to assist customers

Until that number is zero, we have more work to do. Customs and Border Protection, and a member of the Canadian Border Services Agency Partners in Protection (PIP) program. Community Service Avient offers a global benefit of Community Service hours.

Until that number is zero, we have more work to do. Customs and Border Protection, and a member of the Canadian Border Services Agency Partners in Protection (PIP) program. Community Service Avient offers a global benefit of Community Service hours.

This is where Avient’s Foaming Prediction Service can help. This service reduces the need for costly, and timely, physical trials and testing. The service is currently available for standard injection molding processes.

October 2018) Department of the Treasury Internal Revenue Service Request for Taxpayer Identification Number and Certification ▶ Go to www.irs.gov/FormW9 for instructions and the latest information. The number shown on this form is my correct taxpayer identification number (or I am waiting for a number to be issued to me); and 2. Line 5 Enter your address (number, street, and apartment or suite number).

POLYONE SHALL HAVE NO LIABILITY WITH RESPECT TO ANY PRODUCT WHOSE CONTAINER OR OTHER PACKAGING HAS BEEN OPENED OR OTHERWISE COMPROMISED IN ANY WAY AND/OR FOR ANY PURPOSE PRIOR TO ITS USE BY THE END CUSTOMER; INCLUDING, BUT NOT LIMITED TO, REPACKAGING OR BLENDING OF THE PRODUCT BY BUYER. 5. Buyer shall only use PolyOne’s trademarks, trade names, logos, service marks, trade dress or brand names (“Trademarks”) in connection with the solicitation and sales of Products and in such manner as is specified in advance in writing by PolyOne. Buyer will not remove or alter any Trademarks, numbers or other means of identification on Products or the Product packaging. 7.

Finally, OEM customers want lighter- weight components to help improve vehicle fuel efficiency.” Avient’s team provided a variety of value- added technical services, including assistance with tool development, process optimization and testing. Design flexibility = fast customization: Plastic offers much greater design freedom than metal, enabling the company to quickly develop and produce variations of the seat securement part for different customers

Avient is able to service customers globally with a full range of solid masterbatch and liquid colorant solutions to meet your product requirements. Our industry leading team of Technical Service Engineers are highly experienced process specialists dedicated to providing local on-site support for Avient customers around the globe. Avient delivers globally consistent formulations to its customers around the world.