Sustainable infrastructure solutions that increase energy efficiency, renewable energy, natural resource conservation and fiber optic / 5G network accessibility 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.

Sustainable infrastructure solutions that increase energy efficiency, renewable energy, natural resource conservation and fiber optic / 5G network accessibility 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.

Sustainable infrastructure solutions that increase energy efficiency, renewable energy, natural resource conservation and fiber optic / 5G network accessibility 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.

XL9070: 24.6 cm^3 x 0.89 = 21.8 g G7970: 24.6 cm^3 x 1.18 = 29.0 g For an annual number of units required of 500,000 parts per year, a buyer would require the following pounds of material excluding runner system and scrap (454 g/lbs conversion factor): XL9070: 21.8 g / 454 g/lbs x 500,000 = 24,008 lbs G7970: 29.0 g / 454 g/lbs x 500,000 = 31,938 lbs

SC-2801 G BLUE

PP GRAY 425C G-KEY A/M 100% PCR HDPE MONO GREEN SC

SC-2826 G PURPLE

SC-2975 G GREEN

SC-2904 G Gray

SC-2697 D BLACK SCB-2290 G BLUE, PART B