Healthcare device OEM benefitted from single source supplier for pre-colored solutions, Trilliant™ HC thermoplastics, and regulatory support Learn how Mevopur™ Healthcare Functional Additives help protect and enhance the performance of polymers used in healthcare applications Learn how Mevopur™ Healthcare Functional Additives help protect and enhance the performance of polymers used in healthcare applications (Chinese language version)

Patterson said, “We plan to host a live webcast to highlight current demand trends for sustainable solutions and how we help our customers reach their sustainability goals. Non-GAAP Financial Measures The Company uses both GAAP (generally accepted accounting principles) and non-GAAP financial measures. Rose Vice President, Marketing and Communications Avient Corporation +1 440-930-3162 kyle.rose@avient.com mailto:giuseppe.disalvo@avient.com mailto:kyle.rose@avient.com 7 Attachment 1 Avient Corporation Summary of Condensed Consolidated Statements of Income (Unaudited) (In millions, except per share data) Three Months Ended March 31, 2023 2022 Sales $ 845.7 $ 892.2 Operating Income 57.1 102.2 Net income from continuing operations attributable to Avient shareholders 20.8 64.4 Basic earnings per share from continuing operations attributable to Avient shareholders $ 0.23 $ 0.70 Diluted earnings per share from continuing operations attributable to Avient shareholders $ 0.23 $ 0.70 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.

Avient includes in its Code of Conduct and Supplier Code of Conduct internal accountability standards related to slavery and human trafficking to which all employees, agents and consultants are required to adhere. Looking forward, Avient’s Sustainable Sourcing Program is developing a framework to hold our partners accountable to improve upon their sustainable supply chain, including analyzing areas of risk such as quality, environmental, social, geopolitical financial, conflict minerals, and more.

Here's how: Cesa™ Anti-Block Slip LS Cesa™ Anti-Block Additives

Accounts receivable, net Accounts payable Provision for doubtful accounts

How do counterfeits affect brands? Cesa™ Anti-Block Slip LS How can you make the most of color, from design through processing?

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. Forward – Looking Statements Page 2 • This presentation includes the use of both GAAP (generally accepted accounting principles) and non-GAAP financial measures. Adjusted EPS 2006Y* 2007Y* 2008Y* 2009Y 2010Y*** 2011Y*** 2012Y*** *Net Income attributable to PolyOne common shareholders $ 130.9 $ 40.9 $ (417.0) $ 106.7 $ 152.5 $ 153.4 $ 53.3 SunBelt equity earnings, after tax (68.5) (26.1) (20.8) (19.0) (14.7) (3.7) - Special items, after tax (21.2) 41.4 310.0 (31.0) 15.8 (30.5) 35.7 Tax adjustments (30.0) (30.7) 147.2 (44.9) (88.3) (42.3) 0.5 Adjusted net income $ 11.2 $ 25.5 $ 19.4 $ 11.8 $ 65.3 $ 76.9 $ 89.5 Diluted shares 92.8 93.1 92.7 93.4 96.0 94.3 89.8 Adjusted EPS $ 0.12 $ 0.27 $ 0.21 $ 0.13 $ 0.68 $ 0.82 $ 1.00 Adjusted EPS H1 2012*** H1 2013*** *Net Income attributable to PolyOne common shareholders $ 33.7 $ 49.8 Special items, after tax 14.1 15.0 Tax adjustments 1.0 0.7 Adjusted net income $ 48.8 $ 65.5 Diluted shares 90.7 95.8 Adjusted EPS $ 0.54 $ 0.68 *** Restated results to exclude the Resin business and to remove Specialty Coatings from the Performance Products and Solutions segment into Global Color, Additives and Inks segment.

Biopolymers generally derive from renewable sources such as plants, corn, wheat, straw, and sugar cane. To learn more about how Avient’s services can assist in the product development process, click here. Learn how Avient services can assist in the product development process

Biopolymers generally derive from renewable sources such as plants, corn, wheat, straw, and sugar cane. To learn more about how Avient’s services can assist in the product development process, click here. Learn how Avient services can assist in the product development process

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. Forward – Looking Statements Page 2 • This presentation includes the use of both GAAP (generally accepted accounting principles) and non-GAAP financial measures. Adjusted EPS 2006Y* 2007Y* 2008Y* 2009Y 2010Y*** 2011Y*** 2012Y*** *Net Income attributable to PolyOne common shareholders $ 130.9 $ 40.9 $ (417.0) $ 106.7 $ 152.5 $ 153.4 $ 53.3 SunBelt equity earnings, after tax (68.5) (26.1) (20.8) (19.0) (14.7) (3.7) - Special items, after tax (21.2) 41.4 310.0 (31.0) 15.8 (30.5) 35.7 Tax adjustments (30.0) (30.7) 147.2 (44.9) (88.3) (42.3) 0.5 Adjusted net income $ 11.2 $ 25.5 $ 19.4 $ 11.8 $ 65.3 $ 76.9 $ 89.5 Diluted shares 92.8 93.1 92.7 93.4 96.0 94.3 89.8 Adjusted EPS $ 0.12 $ 0.27 $ 0.21 $ 0.13 $ 0.68 $ 0.82 $ 1.00 Adjusted EPS H1 2012*** H1 2013*** *Net Income attributable to PolyOne common shareholders $ 33.7 $ 49.8 Special items, after tax 14.1 15.0 Tax adjustments 1.0 0.7 Adjusted net income $ 48.8 $ 65.5 Diluted shares 90.7 95.8 Adjusted EPS $ 0.54 $ 0.68 *** Restated results to exclude the Resin business and to remove Specialty Coatings from the Performance Products and Solutions segment into Global Color, Additives and Inks segment.