PG 131317.00 OR ABS PEARL GREEN P341C WEEDEATER GREEN CC 7

HI VIS GREEN V2 PG 278143.00 WT PET SPD X ET 261762#SR-25638-7 Can Am Red

AVIENT CORPORATION S E C O N D Q U A R T E R 2 0 2 3 R E S U L T S (NYSE: AVNT) J U LY 2 7 , 2 0 2 3 DISCLAIMER Forward-Looking Statements Certain statements contained in or incorporated by reference into this presentation constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. GUIDANCE (TOTAL COMPANY) 7 $845 $824 Guidance Actual $130 $131 Guidance Actual Sales Adjusted EBITDA (in millions) $0.60 $0.63 Guidance Actual Adjusted EPS (in millions) Q2 2023 PERFORMANCE VS. GUIDANCE (TOTAL COMPANY) 8 15.4% 15.9% Guidance Actual Adjusted EBITDA Margin % Better-than-expected margins driven by: • Favorable mix - strong demand for composite applications • Raw material deflation Q2 EBITDA BRIDGE (TOTAL COMPANY) 9 ($ millions) CAI: Price / Mix 7) Deflation 11) SEM: Price / Mix 2) Deflation 6) Net Price Benefit 26) Wage and Energy Inflation (10) Cost Reductions 13) FX (2) Q2 2023 Actual $131) Adjusted EBITDA Q2 2022 Pro Forma $ 172) Demand (68) • Demand conditions vs. expectations: US & Canada LATAM EMEA Asia • Net price benefit remains greater than wage and energy inflation • Clariant synergies and reduced administrative costs Q2 2023 SEQUENTIAL SALES BY REGION Q 2 2 0 2 3 v s .

June 7, 2023 Avient Earns LUXE PACK “in green” Award for Sustainability Initiative Avient earns LUXE PACK “in green” award for sustainability initiative.

Inorganic and organic light-stable pigments Our inks for striping, offset printing and top coating feature light-stable pigments to reduce fading.

Available in standard single pigment or custom multi-pigment colors

ABS OLIVE GREEN UV PG 254554.00 BK PET X ET SR-15785-7 F1 White Conc 5%

GREEN TUBE PG 294780.01 BU PP BLACK ACRYLIC 7

DP-9203-7-2000 PG 22989 PEARL SI ABS GEON M4300 GREEN 9508

FERN GREEN POLYMELT III 13-7 FLESH 03 PG 28471 BU PP