Mevopur™ Healthcare Functional Additives for Pharmaceutical Packaging Mevopur™ Healthcare Functional Additives help protect and enhance the performance of polymers used in pharmaceutical packaging products such as vials, bottles, closure systems, films and combination devices. Avient makes no warranties or guarantees respecting suitability of either Avient’s products or the information for your process or end-use application. As part of our commitment, we publish Avient’s Mevopur™ product policy and use limitations to assist customers in their product selection.

Select Avient from the Select Customer drop-down list in the top right corner. Select Avient from the Select Customer drop-down list in the top right corner. 3 The Invoice Lines table will then show the following information for all the invoice lines: Column Description Invoice # Invoice number generated by Coupa. Create an Invoice Select Avient from the Select Customer drop-down list in the top right corner.

Comptek, SilCoTec, Gordon Composites and Polystrand, including whether such businesses will be accretive, retain the management teams of acquired businesses, and retain relationships with customers of acquired businesses; disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; our ability to achieve new business gains; the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; changes in polymer consumption growth rates and laws and regulations regarding the disposal of plastic in jurisdictions where we conduct business; changes in global industry capacity or in the rate at which anticipated changes in industry capacity come online; fluctuations in raw material prices, quality and supply and in energy prices and supply; production outages or material costs associated with scheduled or unscheduled maintenance programs; unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; an inability to achieve or delays in achieving or achievement of less than the anticipated financial benefit from initiatives related to working capital reductions, cost reductions and employee productivity goals; an inability to raise or sustain prices for products or services; our ability to continue to pay cash dividends, including at the increasing rate, which will be subject to, among other factors, market conditions, our cash flow and cash requirements and restrictions contained in any of our debt agreements; and other factors affecting our business beyond our control, including, without limitation, changes in the general economy, changes in interest rates and changes in the rate of inflation. 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

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.  Strong past performance demonstrates that our strategy and execution are working  Megatrends and emerging opportunities align with our strengths  Innovation and services provide differentiation, incremental pricing power, and competitive advantage  Strong and proven management team driving growth and performance  Addressable market exceeds $40 billion Schedule I Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except per share data) Below is a reconciliation of non-GAAP financial measures to the most directly comparable measures calculated and presented in accordance with U.S. Platform operating income mix percentage 2005Y* 2008Y* 2010Y* 2013Y 2014 Q1 Global Specialty Engineered Materials $ 0.4 $ 17.6 $ 49.7 $ 57.2 $ 18.3 Global Color, Additives and Inks 4.3 28.1 37.7 104.0 30.4 Designed Structures and Solutions - - - 33.4 11.2 Specialty Platform $ 4.7 $ 45.7 $ 87.4 $ 194.6 $ 59.9 Performance Products and Solutions 75.7 31.3 54.0 56.0 16.0 Distribution 19.5 28.1 42.0 63.3 17.2 SunBelt Joint venture 91.9 28.6 18.9 - - Corporate (51.5) (425.1) (27.7) (82.4) (36.7) Operating income (loss) GAAP $ 140.3 $ (291.4) $ 174.6 $ 231.5 $ 56.4 Less: Corporate operating expense 51.5 425.1 27.7 82.4 36.7 Operating income excluding Corporate $ 191.8 $ 133.7 $ 202.3 $ 313.9 $ 93.1 Specialty platform operating mix percentage 2% 34% 43% 62% 64% * Historical results include the Resin and Specialty Coatings businesses within the Performance Products and Solutions segment.

These charts include details for standard CFA products. Avient makes no warranties or guarantees respecting suitability of either Avient’s products or the information for your process or end-use application. AVIENT MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, either with respect to the information or products reflected by the information.

The resin is then cured, resulting in a strong, lightweight, and durable composite product. They have the unique ability to be custom-designed to meet specific product needs. Higher manufacturing component cost: The molds and dies used in pultrusion can be expensive.

The resin is then cured, resulting in a strong, lightweight, and durable composite product. They have the unique ability to be custom-designed to meet specific product needs. Higher manufacturing component cost: The molds and dies used in pultrusion can be expensive.

The resin is then cured, resulting in a strong, lightweight, and durable composite product. They have the unique ability to be custom-designed to meet specific product needs. Higher manufacturing component cost: The molds and dies used in pultrusion can be expensive.

The resin is then cured, resulting in a strong, lightweight, and durable composite product. They have the unique ability to be custom-designed to meet specific product needs. Higher manufacturing component cost: The molds and dies used in pultrusion can be expensive.

NEWS RELEASE FOR IMMEDIATE RELEASE Avient Announces Registration Details for 2023 Sustainability Day CLEVELAND – August 28, 2023 – Avient Corporation (NYSE: AVNT), a leading provider of specialized and sustainable material solutions, has announced registration details for a virtual Sustainability Day for investment professionals on Wednesday, September 20, 2023, from 9 a.m. – 11 a.m. Beggs, Senior Vice President and Chief Financial Officer, Avient Corporation. https://www.avient.com/investors https://sustainabilityday2023.avient.com/ https://www.avient.com/investors https://register.vevent.com/register/BI0b9400e410674b9d9dc80471579b64b9 https://www.avient.com/investors/events-presentations About Avient Avient Corporation (NYSE: AVNT) provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world.