313 TANGERINE PE UV V5 PE COLTS BLUE 654C UV

PES/PSU/PPSU Colorants: Colorant Chromatics™

Additional iterations are in development for other high-performance resins, including polyethersulfone (PES) and polysulfone (PSU).

Eight of the new grades can be overmolded on polypropylene (PP) and the ninth grade bonds to both PP and polyethylene (PE).

Q 4 AN D FU LL Y EA R 2020 PE RF O RM AN CE $0.30 $0.52 Q4 2020 ORGANIC PERFORMANCE Sales $922 $997 +8% Operating Income EPS $58 $80 +38% +73% • Record 4th quarter sales, adjusted operating income and adjusted EPS performance • All segments delivered year-over-year sales and operating income growth, led by consumer and healthcare end markets • Clariant Masterbatch integration synergy capture ahead of schedule: $5 million realized in 2020 ($ in millions except EPS) (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition Q4 2020 SEGMENT PERFORMANCE 10 Sales Operating Income $100 $100 $100 $922 $100 $100 $100 $997 Distribution CAI SEM Total 2019 2020 $178 $272 $490 $191 $305 $526 SEM Distribution CAI +8% +7% +7% +12% $5 $5 $5 $58 $5 $5 $5 $80 Avient CAI SEM Total $17 $19 $40 $18 $30 $58 Distribution SEM CAI +38% +45% +58% +6% (3) (3) (1) (2) (1) Total company sales include intercompany sales eliminations (2) Total company reflects adjusted operating income and includes corporate costs (3) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition 2020 HIGHLIGHTS 11 • Completed transformational Clariant Masterbatch acquisition and created new brand name Avient • Increased pro forma adjusted EPS 11% from $1.74 to $1.93 as an essential supplier during the pandemic and due to growth in demand for consumer applications • Specialty Engineered Materials delivered record operating income on gains from composites • Achieved record free cash flow, increased dividend for 10th year in a row and delevered from 3.5x to 2.7x net debt to pro forma adjusted EBITDA • Culture is everything: Certified as a Great Place to Work® $133 $150 23%8% 21% 2006 2020PF Avient Portfolio Transformation 22% 59% CLARIANT MASTERBATCH: TRANSFORMATIONAL ACQUISITION 12 Clariant MB EBITDA Growth Purchase Price Multiple 10.8 9.6 6.5 2019PF 2020PF 2020PF w/ Full Synergies • Acquisition of Clariant Masterbatch significantly expands presence in healthcare, packaging and consumer end markets • Strength of portfolio – 13% EBITDA growth as an essential supplier in COVID response and recovery • Acquisition completed on July 1, 2020 for $1.4 billion.

PES/ PSU/ PPSU Colorants: Colorant Chromatics™

Available as a granular masterbatch for injection molding, thermoforming or extrusion, these new additives offer superior performance for most clear polymers, including polyethylene (PE), polypropylene (PP), polycarbonate (PC), polyethylene terephthalate (PET) and polystyrene (PS).

    Colorant Chromatics white colorants for high temperature polymers such as PPSU, PES, PSU and PEI to enhance aesthetics and performance of medical devices

OnCap™ Nucleating Foaming Agent Additive: essential ingredient for manufacturing coaxial PE cables via gas injection foaming

Resin technologies utilized in these formulations include a breadth of options including a variety of polyamides, rigid thermoplastic polyurethanes and specialty resin solutions (such as PES, PEI, PEEK).    Complēt™ long carbon fiber reinforced PES composite reduced weight 40% and met FAA requirements for flammability and survivability Complēt™ LCF PES formulation delivered lightweighting for an aerospace seat component through metal replacement (replacing aluminum)