$0.30 $0.52 Q4 2020 ORGANIC PERFORMANCE 3 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 4 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 5 • 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 10% 23%8% 21% 4% 15% 2006 2020PF Healthcare Consumer Packaging Avient Portfolio Transformation 22% 59% CLARIANT MASTERBATCH: TRANSFORMATIONAL ACQUISITION 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. We will deliver for our stakeholders through multiple value creation levers—many of which are unique to Avient: o Demand for sustainable solutions, healthcare, and composites, together with Clariant Masterbatch revenue synergies, that will drive 2021 revenue growth of 8% and long-term growth in excess of GDP o Clariant Masterbatch cost synergy capture will result in significant near-term benefit In addition, we remain committed to increasing annual dividends in line with earnings growth and opportunistically buying back shares, all while remaining modestly levered. Avient acquired the Clariant Masterbatch business (CMB) on July 1, 2020 (the “Acquisition Date”).

Just a few months ago, we completed the acquisition of the Clariant Masterbatch business, the largest acquisition in the 20-year history of our company. It’s in this spirit that we joined legacy PolyOne and the Clariant Masterbatch business, two complementary businesses, and formed a new one that we’ve named Avient. Avient acquired the Clariant Masterbatch business (CMB) on July 1, 2020 (the “Acquisition Date”).

F L E X IB L E PA C K AG I N G C O M PA N Y P E T F O O D P A C K A G I N G • Incorporate an antistatic additive into pet food packaging to dissipate static in hot and dry environments • Improve efficiency within a robotic packaging process • Support extended packaging shelf life • Leveraged technical expertise in packaging additives to identify a suitable formulation for static dissipation in harsh environments • Provided a customized and effective antistatic additive solution that complemented the automated packaging process while providing added durability and protection to extend shelf life Cesa Stat Antistatic Additives KEY REQUIREMENTS WHY AVIENT? https://www.avient.com/products/polymer-additives/processing-enhancement-additives/cesa-stat-antistatic-additives Slide 1: Flexible packaging company

Merklein joined Avient in July of 2020 through the acquisition of the Clariant Masterbatch business. Merklein previously served in management positions at Clariant International, Ltd., including Head of Group Procurement; Vice President, Business Line Plastics and Special Applications and Head of Region Europe for the Pigments and Additives Division.

MB CLARIANT WHITE VER. 3 WHITE S797 SE UV

F548 White Foam / Clariant UV SILVER PEARL

Cesa™ No-fog Additives & OnCap™ Anti-fogging Additives Minimizing the negative effect of condensation on the film surface is one of the key needs during the food packing process and on the shelf. Cesa™ & OnCap™ Anti-blocking Additives In order to prevent self-adhesion of plastic films or sheets, anti-blocking additives reduce the surface coefficient of friction by creating a slightly rougher or smoother surface. Cesa™ Nox Additives Cesa Nox antioxidant solutions help plastics maintain shine and transparency while preventing yellowing, surface cracking, and odors often caused by oxidation and heat aging.

Just a few months ago, we completed the acquisition of the Clariant Masterbatch business, the largest acquisition in the 20-year history of our company. Synergies Initial Estimate Revised Estimate Administrative $ 18 $ 20 Sourcing 24 30 Operational 18 25 Total Synergies $ 60 $ 75 CLARIANT INTEGRATION & COST SYNERGIES UPDATE 13 $1.65 $2.00 2020E Organic 2020 PF 2020 PF w/ Synergies The cost synergies from the Clariant Masterbatch acquisition will help drive substantial margin expansion. Such is the case with the Clariant Masterbatch acquisition, where strong free cash flow will allow us to de-lever quickly. 19 AVIENT IS MODESTLY LEVERED 1.

Cesa™ WithStand™ Antimicrobial Additives These customized additives are now a part of our broader Cesa™ WithStand™ Antimicrobial additive family. Cesa WithStand additives provided a low let-down ratio that resulted in a 30% cost savings per year.

Cesa™ WithStand™ SX Low Haze Antimicrobial Additives Now Available for Clear Plastic Applications Cesa™ WithStand™ SX Low Haze Antimicrobial Additives by Avient offer protection against the growth of bacteria, mold, or fungi and maintain visual Avient announces expansion to Cesa™ functional additives and NEUSoft™ TPU portfolios and will highlight its innovative material solutions for heal