Company plans to announce Platinum Vision and aggressive new financial goals at its May 18th Investor Day in New York City Richardson, executive vice president and chief financial officer, PolyOne Corporation, said, "In January and February, we observed significant customer order delays in PPS, POD and DSS as customers worked through on-hand inventories.  Rose Vice President, Corporate Communications PolyOne Corporation +1 440-930-3162 kyle.rose@avient.com

CRIST Vice President, Key Account Management and Vice President of Asia HOLGER KRONIMUS Vice President, Europe, General Manager, Engineered Materials Europe LISA K. Calvert City facility, together with certain defense costs of Goodrich Corporation. These same Court rulings and the settlement agreement provide a mechanism to allocate future remediation costs at the Calvert City facility to Westlake Vinyls, Inc.

Upcoming Investor Day “Planning is underway for our investor day in New York City on December 9. We are excited to lay out our long-term growth plans, highlighting our sustainable solutions portfolio as well as provide an update on the synergies expected from the Clariant color business acquisition,” said Jamie Beggs, Senior Vice President and Chief Financial Officer, Avient Corporation. For the same reasons, the Company is unable to address the probable significance of the unavailable information. 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.

Vice President of Sustainability at Investor Relations, Giuseppe (Joe) Di Salvo, Vice President, Treasurer and Investor Relations, Avient Corporation, +1 440-930-1921, giuseppe.disalvo@avient.com; Media, Kyle G. Rose, Vice President, Corporate Communications, Avient Corporation, +1 440-930-3162, kyle.rose@avient.com

Executive Vice President and CFO, will provide insights and commentary on the company's growth expectations for the first quarter, strong financial position, as well as the status of the previously announced Clariant Masterbatch acquisition.  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. Rose, Vice President, Corporate Communications, PolyOne Corporation, +1 440-930-3162, kyle.rose@avient.com

Investor Relations: Giuseppe (Joe) Di Salvo, Vice President, Treasurer and Investor Relations, Avient Corporation, +1 440-930-1921, giuseppe.disalvo@avient.com; Media: Kyle G. Rose, Vice President, Corporate Communications, Avient Corporation, +1 440-930-3162, kyle.rose@avient.com

Investor Relations, Giuseppe (Joe) Di Salvo, Vice President, Treasurer and Investor Relations, Avient Corporation, +1 440-930-1921, giuseppe.disalvo@avient.com; Media, Kyle G. Rose, Vice President, Marketing and Communications, Avient Corporation, +1 440-930-3162, kyle.rose@avient.com

Investor Relations Contact: Giuseppe (Joe) Di Salvo, Vice President, Treasurer and Investor Relations, Avient Corporation, +1 440-930-1921, giuseppe.disalvo@avient.com or Media Contact: Kyle G. Rose, Vice President, Corporate Communications, Avient Corporation, +1 440-930-3162, kyle.rose@avient.com

Investor Relations Contact: Joe Di Salvo, Vice President, Investor Relations, PolyOne Corporation, +1 440-930-1921, giuseppe.disalvo@avient.com; Media Contact: Kyle G. Rose, Vice President, Corporate Communications, PolyOne Corporation, +1 440-930-3162, kyle.rose@avient.com

Avient’s Vice President of Environmental, Health and Safety has oversight of Environmental management at our sites globally. Every site has an EH&S resource, in addition to regional EH&S leaders, who report to the Vice President of Environmental, Health and Safety, who reports to the SVP of Global Operations and Process Improvement.