Avient Announces Fourth Quarter and Full Year 2022 Results Fourth quarter and full year GAAP EPS from continuing operations of $(0.19) and $0.90  Fourth quarter and full year adjusted EPS fro

I am extremely proud to be serving in my first year as CEO of Avient, a company that is enabling improved sustainability in many facets of our world today. Last year, we improved our ratings from two key and influential third-party agencies, earning a Gold medal from EcoVadis (94th percentile) and an A- from CDP. Internally, we were certified for the fifth year as a Great Place to Work®.

Last year we were successful in each of these regards. We achieved $1.69 of adjusted earnings per share, a 12% increase over 2018. O D O L L A R S 74424.indd main_13 3/16/20 12:26 PM Annual Report | 2019 14 P E R F O R M A N C E 74424.indd main_14 3/16/20 12:26 PM 15 Annual Report | 2019 11% INCREASE IN DIVIDEND STOCK PRICE INCREASE +32% SHARES REPURCHASED 1.0Million 2.50 2.25 2.00 1.75 1.50 1.25 1.00 0.75 0.50 0.25 10 Years of Adjusted Earnings Per Share Growth $ U .S .

In addition, our LSS energy savings projects led to a cumulative annual CO2e avoidance of over 6,800 MT per year. Associates have the opportunity at least twice per year through the performance appraisal process to request a career development discussion with their manager. The Impact WithStand™ additives provided a low let-down ratio that resulted in a 30% cost savings per year.

In addition, our LSS energy savings projects led to a cumulative annual CO2e avoidance of over 6,800 MT per year. Associates have the opportunity at least twice per year through the performance appraisal process to request a career development discussion with their manager. The Impact WithStand™ additives provided a low let-down ratio that resulted in a 30% cost savings per year.

The non-GAAP financial measures include: Adjusted Earnings Per Share, Adjusted EBITDA and adjusted EBITDA margins. Avient does not provide reconciliations of forward-looking non-GAAP financial measures, such as outlook for Adjusted EBITDA and Adjusted Earnings Per Share, to the most comparable GAAP financial measures on a forward-looking basis because Avient is unable to provide a meaningful or accurate calculation or estimation of reconciling items and the information is not available without unreasonable effort. Management excludes intangible asset amortization from adjusted EPS as it believes excluding acquired intangible asset amortization is a useful measure of current period earnings per share.

A lot can change in 15 years. That saved the company $70,000 a year in direct manufacturing costs. That reduced associated freight costs by $36,000 a year.

Accordingly, for purposes of comparability to the January 28, 2020 guidance, and prior year, management has referenced adjusted EPS excluding the impact of the additional shares issued in February. For purposes of comparability to the prior year, senior management has referenced adjusted EPS excluding the impact of additional shares issued in February 2020, as well as the impact of the senior unsecured notes offering completed in May 2020. Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except per share data) Avient Investor Presentation - Jefferies Industrials Conference August 2020.pdf August 2020 investor non-GAAP reconciliation.pdf August 2020 investor non-GAAP

The non-GAAP financial measures include: Adjusted Earnings Per Share, Net Debt/Adjusted EBITDA and Adjusted EBITDA. Chamber of Commerce; BEAD refers to Broadband Equity, Access, and Deployment Program 16 • Fiscal Year 2024 U.S. Avient 2011 and 2018 valuations reflect trailing 12 months EBITDA at December 31 of the respective years. 37 EV / 2023E EBITDA Historic Multiple 6.5 8.3 9.9 14.6 13.7 13.0 11.9 8.8 18.7 17.4 11.8 10.0 9.7 9.1 8.0 7.9 A vi en t (2 01 1) A vi en t (2 01 8) A vi en t (2 02 3) K W R P P G R P M A V Y F U L E C L H X L F M C A S H S C L C E E M N H U N 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.

The non-GAAP financial measures include: Adjusted Earnings Per Share, Free Cash Flow, Net Debt/Adjusted EBITDA and Adjusted EBITDA. Chamber of Commerce; BEAD refers to Broadband Equity, Access, and Deployment Program 12 • Fiscal Year 2024 U.S. Avient 2011 and 2018 valuations reflect trailing 12 months EBITDA at December 31 of the respective years. 33 EV / 2023E EBITDA Historic Multiple 6.5 8.3 9.9 14.6 13.7 13.0 11.9 8.8 18.7 17.4 11.8 10.0 9.7 9.1 8.0 7.9 A vi en t (2 01 1) A vi en t (2 01 8) A vi en t (2 02 3) K W R P P G R P M A V Y F U L E C L H X L F M C A S H S C L C E E M N H U N 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.