March 1, 2018 Swanson, Director, Investor Relations, PolyOne Corporation, +1 440-930-1018, eric.swanson@avient.com, Media Contact: Kyle G. Rose, Vice President, Corporate Communications, PolyOne Corporation, +1 440-930-3162, kyle.rose@avient.com

Tuesday, May 1, 2018 Swanson, Director, Investor Relations, PolyOne Corporation, +1 440-930-1018, eric.swanson@avient.com; Media Contact: Kyle G. Rose, Vice President, Corporate Communications, PolyOne Corporation, +1 440-930-3162, kyle.rose@avient.com

Investor contact: Eric Swanson Director, Investor Relations PolyOne Corporation +1 440-930-1018 eric.swanson@avient.com Media contact: Kyle Rose Vice President, Corporate Communications PolyOne Corporation +1 440-930-3162 kyle.rose@avient.com Trade Media contact: Michelle Maniscalco Marketing Communications Manager, North America PolyOne Corporation +1 440-930-1988 michelle.maniscalco@avient.com

MILAN, Italy – June 7, 2023 – Avient Corporation is debuting a new, sustainable solution for textile dyes and highlighting recently achieved compliance certifications for color & additives for synthetic fibers at the start of ITMA 2023, the world’s largest annual international textile and garment technology exhibition June 8-14 in Milan, Italy. Avient’s team of experts will be on-site at ITMA 2023, June 8-14, exhibiting their dyes, chemicals, finishes, and color & additives for spin-dyeing portfolios throughout the show at Fiera Milano Rho, Hall 5, booth B302, in Milan Italy.

To participate in the webcast, dial 1-844-835-7433 (domestic) or 1-914-495-8589 (international) and provide conference ID number 5289238.  To listen to this recording, dial 1-855-859-2056 (domestic) or 1-404-537-3406 (international) and provide conference ID number 5289238. Attachment 1

Figure 1 shows the typical starting barrel temperatures. Figure 1. Zone 1

To drive progress toward carbon neutrality, Avient’s low carbon transition plan targets intermediate (2030) goals around Scope 1 (direct) and Scope 2 (indirect) sources of greenhouse gas emissions. Most of Avient’s Scope 1 and 2 GHG emissions are attributable to the consumption of energy. Scope 3 emissions are many times greater than our combined Scope 1 and 2 emissions.

For a bulb-type product that has a maximum diameter to neck diameter of 2-to-1, air ejection is possible with a minimum permanent deflection of the neck. To make sure the degating process does not pull a hole in the part, the cross sectional size of the gate should be between 1/10 and 1/4 the thickness of the part wall section where the gate is located.

For a bulb-type product that has a maximum diameter to neck diameter of 2-to-1, air ejection is possible with a minimum permanent deflection of the neck. To make sure the degating process does not pull a hole in the part, the cross sectional size of the gate should be between 1/10 and 1/4 the thickness of the part wall section where the gate is located.

Attachment 1 Special items (1) 1) Special items are a non-GAAP financial measure.