CAMELBAK PMS T705-1-3 GRY CAMELBAK PMS T705-1-3 GRY PURPLE #185371 (BV4-1)

SISA ORANGE-1 ERZE ORANGE-1 GALAXY AMBER-1

X HC-451651A-1 X HC-450291A-1 X HC-44981-1A-1

X LB 34066-1B-1-0 X LB 34066-1B-1-2 X LB 34066-1B-1-4

1% 1% 1%

June 1, 2018 June 1, 2018 Rose, Vice President, Corporate Communications, PolyOne Corporation, +1 440-930-3162, kyle.rose@avient.com

To participate in the audio-only portion of the call, dial 1-844-835-7433 (domestic) or 1-914-495-8589 (international) and provide conference ID number 3293155, as previously announced. 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

MNE31-14-1 PTU-71 (SOLVAY 266) DNU MNE30-90-1 FOOD CLOSURE DNU MNE31-1-1 WHITE BELTING

BLUE 1 GREEN 1 AMBER 1

PANTONE P160-1 C MORADO - PANTONE 0270-5-1 (V2) MORADO-PANTONE 0270 -4-1 (V2)