PG 145396.00 BU PE IMPPH 134944 WHITE

PG 21448.04 PEARL WT PE WHITE W/LM

POLYCON RED PE XES133139D OASIS HYDRATE HILITE WHITE

White Paper Complēt™ long carbon fiber reinforced PES composite reduced weight 40% and met FAA requirements for flammability and survivability

White Paper Complēt™ long carbon fiber reinforced PES composite reduced weight 40% and met FAA requirements for flammability and survivability

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.

Complēt™ LCF PES formulation delivered lightweighting for an aerospace seat component through metal replacement (replacing aluminum) Complēt™ long carbon fiber reinforced PES composite reduced weight 40% and met FAA requirements for flammability and survivability

It is specially formulated for polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET), and Nylon.  The GRS-certified color and additive solutions from Avient contain a required percentage of pre-consumer or post-consumer recycled polyester primarily from recycled PET, Nylon, PP, PE, and other resin bases that aim to save on energy and water use during the spin-dyeing (dope-dyeing) process. 

Colorant Chromatics™ PES Green Color Concentrate provide customizable high-performance solution able to withstand multiple cleaning cycles with detergents Colorant Chromatics™ PES/PPSU delivered consistent distribution and dispersion in high-temperature polymers, resulting in improved mechanical properties and performance

PE CUROS GREEN PE YELLOW-F