1. Avient’s application development and technical service (ADTS) capabilities include: For Avient materials, this information is found in some of our online processing guides.

Avient’s chief operating decision maker uses these financial measures to monitor and evaluate the ongoing performance of Avient and each business segment and to allocate resources. 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. To provide comparable results, the company references “pro forma” financial metrics, which include the business results of Avient Protective Materials for periods prior to the Acquisition Date, as if the transaction occurred on January 1, 2021 and reflect Distribution as a discontinued operation.

To participate in the audio-only portion of the call, dial 1-844-835- 7433 (domestic) or 1-914-495-8589 (international) and provide conference ID number 6746706. To access, dial 1-855-859-2056 (domestic) or 1-404-537-3406 (international) and provide conference ID number 6746706. Rose Vice President, Corporate Communications Avient Corporation +1 440-930-3162 kyle.rose@avient.com mailto:giuseppe.disalvo@avient.com mailto:kyle.rose@avient.com Attachment 1 Avient Corporation Summary of Condensed Consolidated Statements of Income (Unaudited) (In millions, except per share data) Three Months Ended March 31, 2021 2020 Sales $ 1,162.3 $ 711.5 Operating Income 120.4 52.8 Net income from continuing operations attributable to Avient shareholders 79.3 33.1 Basic earnings per share from continuing operations attributable to Avient shareholders $ 0.87 $ 0.38 Diluted earnings per share from continuing operations attributable to Avient shareholders $ 0.86 $ 0.38 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 Corporation. Avient Corporation. All Rights Reserved 2025 Playbook in current environment 1.

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Avient Announces Fifteenth Consecutive Annual Dividend Increase... Avient To Hold Third Quarter 2025 Conference Call... Avient Hires David N.

Avient Announces Fifteenth Consecutive Annual Dividend Increase... Avient To Hold Third Quarter 2025 Conference Call... Avient Hires David N.

Avient Announces Fifteenth Consecutive Annual Dividend Increase... Avient To Hold Third Quarter 2025 Conference Call... Avient Hires David N.