See What is backup withholding, later. Backup Withholding What is backup withholding? What is FATCA Reporting?

Irwin joined Avient in 2024 after a 22-year career at 3M, where he held roles in sales, global marketing and market development leadership, and P&L responsibility for global businesses. From 2019–2024 he served as Global Vice President for the $1.2B Abrasive Systems Division of 3M’s Safety and Industrial business group.

Clark joined Avient in 2024 from Nouryon, a global specialty chemicals organization where he served as Chief Technology Officer.

Sequeira joined Avient in May 2024, bringing nearly 25 years of experience in information technology to this role.

Clark joined Avient in 2024 from Nouryon, a global specialty chemicals organization where he served as Chief Technology Officer.

MAGATARTÁSI KÓDEXÜNK KIADVA: 2024.

Bob Patterson Chairman, President, and CEO March 12, 2021 SECURITY POLICY Avient Corporation places a high priority on protecting the security of our people, our buildings and equipment, and our proprietary information, technology and systems.

Reconciliation to Adjusted EPS Excluding Special Items and Impacts of February 2020 Equity Offering Three Months Ended March 31, 2020 Net income from continuing operations – GAAP $ 33.1 Special items, after tax (1) 8.6 After tax interest income earned on equity proceeds, included in Interest expense, net (0.7) Adjusted net income excluding special items and impact of interest income on equity proceeds $ 41.0 Diluted weighted-average shares used to compute earnings per common share 86.7 Weighted-average impact of 15.3 million shares issued in February 2020 equity offering (9.3) Diluted weighted-average shares excluding impact of shares issued in February 2020 equity offering 77.4 Adjusted EPS - excluding special items and the net impact of equity offering $ 0.53 Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except per share data) Senior management uses comparisons of adjusted net income from continuing operations attributable to PolyOne shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to PolyOne shareholders, excluding special items, to assess performance and facilitate comparability of results.

Reconciliation to Adjusted EPS Excluding Special Items and Impacts of February 2020 Equity Offering Three Months Ended March 31, 2020 Net income from continuing operations – GAAP $ 33.1 Special items, after tax (1) 8.6 After tax interest income earned on equity proceeds, included in Interest expense, net (0.7) Adjusted net income excluding special items and impact of interest income on equity proceeds $ 41.0 Diluted weighted-average shares used to compute earnings per common share 86.7 Weighted-average impact of 15.3 million shares issued in February 2020 equity offering (9.3) Diluted weighted-average shares excluding impact of shares issued in February 2020 equity offering 77.4 Adjusted EPS - excluding special items and the net impact of equity offering $ 0.53 Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except per share data) Senior management uses comparisons of adjusted net income from continuing operations attributable to PolyOne shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to PolyOne shareholders, excluding special items, to assess performance and facilitate comparability of results.

April 4, 2024 MALMÖ, Sweden – April 4, 2024 – Avient Corporation, a leading provider of specialized and sustainable materials solutions and services, announced today that its site in Malmö, Sweden, completed the requirements to receive the ISCC (International Sustainability and Carbon Certification) PLUS certification for its Mevopur™ Healthcare Bio-Based Polymer Solutions manufactured on site.