Pro Forma Financial Information The Company acquired Avient Protective Materials (“Dyneema”) on September 1, 2022 (the “Acquisition Date”) and sold the Distribution segment on November 1, 2022. Avient reflects 2023 adjusted EBITDA guidance of $525M and estimated run-rate CAPEX of $110M. 2023E (%) 27 79 89 83 83 78 75 90 81 76 72 68 63 53 11 Avient Specialty Other Specialty / MULTIPLE EXPANSION Note: Avient reflects 2023 adjusted EBITDA guidance of $525M and closing share price of $37.07. Avient 2011 and 2018 valuations reflect trailing 12 months EBITDA at December 31 of the respective years. 28 EV / 2023E EBITDA Historic Multiple 6.5 8.3 9.5 13.8 12.7 12.6 11.3 8.7 18.6 16.5 10.1 10.0 9.7 9.5 9.4 8.7 01 1) 01 8) 02 3) Avient Specialty Other Specialty / SEGMENT DATA U.S. & Canada 40% 37% 18% 2022 PRO FORMA SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS Building and END MARKET REVENUE $2,355M $402M $1,300M $272M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $592M$3,653M (1) 9% 30 (1) Total company sales and adjusted EBITDA of $3,653M and $592M, respectively, include intercompany sales eliminations and corporate costs 2022 REVENUE | $2 .4 B ILL ION 34% 38% END MARKET REGION 31 34% 21% Building & 1% Energy 2% COLOR, ADDITIVES & INKS 2022 PRO FORMA REVENUE | $1 .3 B ILL ION 52% 35% 32 19% 8%Industrial 16% 9% Defense Building & END MARKET REGION SPECIALTY ENGINEERED MATERIALS 32% 27% 14% Building & 3% 1% Defense 1% (18% of sales) 9% 2022 PROFORMA AVIENT REGIONAL SALES 27% 14% 17% Building & (37% of sales)Transportation 12% Building & US & Canada (40% of sales) 7% 56% 23% 7% Building & 1% LATAM (5% of sales) 3% 33 BY END MARKET 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.

A supplier of plastic compounds now has an invaluable competitive edge in one of its primary markets, thanks to an in-depth research and color-finding project recently completed in partnership with Avient ColorWorks™. After taking part in a customer-day event at the Avient ColorWorks design and technology center in Milan, company founder Francesco Franceschetti was inspired and suggested a collaboration to conduct an exhaustive study of the Italian ski boot marketplace and the colors boot makers use in their products. The outcome of this unique project would be a comprehensive report and guide, including five colors proposed for the 2021 – 2022 ski season following visits to dealers, boutique shops, and chain stores.

A supplier of plastic compounds now has an invaluable competitive edge in one of its primary markets, thanks to an in-depth research and color-finding project recently completed in partnership with Avient ColorWorks™. After taking part in a customer-day event at the Avient ColorWorks design and technology center in Milan, company founder Francesco Franceschetti was inspired and suggested a collaboration to conduct an exhaustive study of the Italian ski boot marketplace and the colors boot makers use in their products. The outcome of this unique project would be a comprehensive report and guide, including five colors proposed for the 2021 – 2022 ski season following visits to dealers, boutique shops, and chain stores.

Office Supplies Pet Care & Supplies Auto-injectors and Drug Delivery Pens

At Avient, we are proud to be a part of the solution, supporting the shift from a linear economy to a circular economy and driving sustainability for all of our stakeholders. Industry A circular economy would reduce the cost of materials and production, which in turn creates savings for industries. SOURCE: https://www.sourcetoday.com/supply-chain/article/21142961/four-challenges-standing-in-the-way- of-a-circular-economy Report According to the 2021 Circularity Gap Report, our global economy is only 8.6% circular.

MAJOR TIER 1 SUPPLIER C O N N E C T O R C O V E R • EMI-shielding performance at frequencies from 30 MHz up to 2 GHz • Excellent dimensional stability • Must meet robust mechanical property targets including tensile strength and elongation at break • Worked in close collaboration with the OEM from the start of the development process in order to fully understand their key requirements • Developed a customized material providing the required EMI-shielding performance which, removing the need for secondary metallization manufacturing processes, reduced cycle time Surround™ NN- 14 NICF SIP Black Formulation KEY REQUIREMENTS WHY AVIENT? AVIENT SOLUTION EMI SHIELDING AT LOWER FREQUENCIES LEARN MORE Copyright © 2020, Avient Corporation.

THE IMPACT Avient was able to reduce lead time on these newly developed additives by a week versus the original supplier, enabling this customer to better manage and control inventory levels. Further, the lower let-down ratio represented a 30% cost savings per year. Finally, Avient’s willingness and ability to conduct and provide testing results saved the customer time and money.

SELF-SERVICE 1. Save, review and manage your chosen formulations for future reference and production scale orders. This helps facilitate closer collaboration with your design and manufacturing suppliers.

of annual interest expense savings. Attachment 1 1)

1. How Avient can help: You can rely on the expertise we’ve gained in developing automotive material solutions for a wide range of electrical and lighting applications. We’ll supply you with proven solutions that take the hassle out of achieving your goals.