Our purpose at Avient Corporation (NYSE: AVNT) is to be an innovator of materials solutions that help our customers succeed, while enabling a sustainable world. Media Contact Nicole DeChant Avient Corporation nicole.dechant@avient.com Company Officers

PolyOne Corporation, with 2013 revenues of $3.8 billion, is a premier provider of specialized polymer materials, services and solutions. Michelle Maniscalco Marketing Communications Manager, North America PolyOne Corporation +1 440-930-1988 michelle.maniscalco@avient.com Company Officers

Patterson, Chairman, President and Chief Executive Officer, Avient Corporation. We are optimistic we can host this meeting in person, but will make arrangements to do so by video if necessary,” 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. 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.

Patterson, Chairman, President and Chief Executive Officer, Avient Corporation. 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.

Patterson, Chairman, President and Chief Executive Officer, Avient Corporation. 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.

Patterson, Chairman, President and Chief Executive Officer, Avient Corporation. Avient Corporation Avient Corporation

Patterson, Chairman, President, and Chief Executive Officer, Avient Corporation. 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.

Ashish Khandpur, President and Chief Executive Officer, Avient Corporation. The underlying growth in these regions helped offset softer demand in Europe and Southeast Asia." 2 2024 Outlook “Looking ahead to the second quarter, we expect adjusted EPS of $0.71, a 13% increase over the prior year," 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.

Ashish Khandpur, President and Chief Executive Officer of Avient Corporation. Europe and Asia regions benefited largely from restocking and share gains, particularly in the packaging end market." 2024 Outlook "Looking ahead to the third quarter, we expect adjusted EPS of $0.62, a 9% increase over the prior year," said Jamie Beggs, Senior Vice President and Chief Financial Officer of Avient Corporation. For the same reasons, the Company is unable to address the probable significance of the unavailable information.

Company Address 17 Tideman Drive, Orangeville (Ontario) Report Details NPRI ID 2277 Facility Name Orangeville Plasticizer Facility Address 15 Tideman Drive, Orangeville (Ontario) Update Comments Activities Contacts Select the Facility Contacts Facility Contacts Please assign the appropriate contact under each category below. Company Trade Name: * Polyone Canada Inc Business Number: * 898451794 Mailing Address Delivery Mode General Delivery PO Box Rural Route Number Address Line 1 17 Tideman Drive about:/V003/Html http://www.canada.gc.ca/home.html http://www.servicecanada.gc.ca/eng/home.shtml http://www.canada.gc.ca/aboutgov-ausujetgouv/depts/menu-eng.html https://ec.ss.ec.gc.ca/auth/en/Services about:blank# about:blank# about:blank# about:/V003/Logout_Deconnexion http://ec.gc.ca/default.asp? Facility Information Facility Name: * Orangeville Plasticizer NAICS Code: * 326198 NPRI Id: * 2277 ON Reg 127/01 Id Facility Mailing Address Delivery Mode General Delivery PO Box Rural Route Number Address Line 1 15 ­ Tideman Drive City * Orangeville Province/Territory ** Ontario Postal Code: ** L9W3K3 Physical Address Address Line 1 15 Tideman Drive City Orangeville Province/Territory ** Ontario Postal Code ** L9W3K3 Additional Information Land Survey Description National Topographical Description NPRI Facility Location Latitude (decimal degrees) * 43.91330 Longitude (decimal degrees) * ­80.11580 UTM Zone UTM Easting UTM Northing Contact Validation The information in this section was copied from the Single Window Information Manager (SWIM) at the time the plan summary was created.