The company is dedicated to serving customers in diverse industries around the globe, by creating value through collaboration, innovation and an unwavering commitment to excellence. Investor Relations Contact: Eric R. Investor Contacts

The company is dedicated to serving customers in diverse industries around the globe, by creating value through collaboration, innovation and an unwavering commitment to excellence. Investor Relations Contact: Eric R. Investor Contacts

The company adds value to global customers and improves sustainability through formulating materials, such as: Investor Relations Contact: Joe Di Salvo, Vice President, Treasurer and Investor Relations, PolyOne Corporation, +1 440-930-1921, giuseppe.disalvo@avient.com; Media Contact: Kyle G. Investor Contacts

The company is dedicated to serving customers in diverse industries around the globe, by creating value through collaboration, innovation and an unwavering commitment to excellence. Investor Relations Contact: Eric R. Investor Contacts

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 noted that GAAP EPS includes special items (Attachment 3). The question and answer session will follow the company’s presentation and prepared remarks. To access Avient’s news library online, please visit www.avient.com/news # # # 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.

For the same reasons, the Company is unable to address the probable significance of the unavailable information. The question and answer session will follow the company’s presentation and prepared remarks. # # 7 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 noted that proceeds from the sale will be used to strengthen its balance sheet and fund future growth initiatives, including investing in sustainable solutions and specialty acquisitions.  The company adds value to global customers and improves sustainability through formulating materials, such as: Investor Contacts

Contact Us Avient currently does not engage in verification of its supply chains to evaluate and address risks of human trafficking and slavery, nor does it currently conduct audits of its suppliers’ compliance with company standards for trafficking and slavery in supply chains. Contact Us