Media contact: Kyle Rose Director, Corporate Communications PolyOne Corporation +1 440-930-3162 kyle.rose@avient.com Media Relations Contacts Company Officers

Media contact: Kyle G. Media Relations Contacts Company Officers

Third Quarter and Full Year 2021 Outlook Commenting on the company’s 2021 outlook, Mr. There will be a question and answer session following the company’s presentation and prepared remarks. For the same reasons, the Company is unable to address the probable significance of the unavailable information. 5 Investor Relations Contact: Giuseppe (Joe) Di Salvo Vice President, Treasurer and Investor Relations Avient Corporation +1 440-930-1921 giuseppe.disalvo@avient.com Media Contact: Kyle G.

The question and answer session will follow the company’s presentation and prepared remarks. For the same reasons, the Company is unable to address the probable significance of the unavailable information. 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. 6 Investor Relations Contact: Giuseppe (Joe) Di Salvo Vice President, Treasurer and Investor Relations Avient Corporation +1 440-930-1921 giuseppe.disalvo@avient.com Media Contact: Kyle G.

The company will then host a conference call at The company adds value to global customers and improves sustainability through formulating materials, such as: Investor Contacts

Media contact Jennifer Huang Marketing Communications Manager, Asia PolyOne Corporation +86 21 50802923 jennifer.huang@avient.com Media Relations Contacts Company Officers

Media contact Matt Defosse Marketing Communications Manager, Europe PolyOne Corporation +49 6407-907-0386 matt.defosse@avient.com Media Relations Contacts Company Officers

Media contact Media Relations Contacts Company Officers

Media contact Media Relations Contacts Company Officers

Media contact   Media Relations Contacts Company Officers