Avient launches new Cesa™ Non-PFAS Process Aid for PE and PP extrusion applications at NPE 2024, enabling processing performance, productivity, and

Remafin™ EP White Colorants Colorant Chromatics™ PES/PSU/PPSU Colorants Remafin™ EP White Colorants

It meets FDA and ISO 109931 standards for sulfone products and can be effective across a range of high-temperature polymers, including PEEK, PPSU, PES, PSU, PEI, LCP, and PPS, with a maximum service temperature exceeding 150°C. Medical-grade pharmaceutical packaging solutions: oxygen scavenging additives, amber and white colorants, and white HDPE for MVTR (Moisture Vapor Transmission rate) reduction to protect drugs or nutraceuticals against UV light, moisture, and oxygen that cause product degradation.

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.

Compatible with ethylene-vinyl acetate (EVA) and polyethylene (PE), a portfolio of 12 standard colors allows for lower minimum order quantities and shorter lead times.

PES/ PSU/ PPSU Colorants: Colorant Chromatics™

PES/PSU/PPSU Colorants: Colorant Chromatics™

Garratt Senior Vice President, President of Performance Products & Solutions John Midea Senior Vice President, Global Operations & Process Improvement Mark Crist Senior Vice President, President of PolyOne Distribution Cathy Dodd Vice President, Marketing Chris Murphy Vice President, Research & Development, Chief Innovation Officer Kurt Schuering Vice President, Global Key Account Management The Leaders Behind the Team PolyOne Corporation Page 8 Commodity to Specialty Transformation • Volume driven, commodity producer • Heavily tied to cyclical end markets • Performance largely dependent on non- controlling joint ventures 2000-2005 2006 - 2009 2010 – 2014 2015 and beyond • Steve Newlin appointed, Chairman, President and CEO • New leadership team appointed • Implementation of four pillar strategy • Focus on value based selling, investment in commercial resources and innovation to drive transformation • Substantial EPS growth from $0.13 to all-time high of $1.80 • Shift to faster growing, high margin, less cyclical end markets • Key acquisitions propel current and future growth, as well as margin expansion • Specialty mix expands to 65% of Operating Income – strongest mix of earnings in history • Accelerating growth • Deliver consistent double digit annual EPS growth • Maintain >35% vitality index • Pursue strategic acquisitions that expand specialty offerings and geographic breadth • Invest and grow current and next generation talent PolyOne Corporation Page 9 2006 2014 “Where we were” “Where we are” Operating Income % Specialty: Global Color, Additives & Inks 1.7% 14.7% Global Specialty Engineered Materials 1.1% 12.1% Designed Structures & Solutions 1.4%(2012) 7.3% Performance Products & Solutions 5.5% 7.7% Distribution 2.6% 6.1% Specialty Platform % of Operating Income 6.0% 65% ROIC 5.0% 11.3% Adjusted EPS Growth N/A 37% Proof of Performance PolyOne Corporation Page 10 2% 34% 43% 62% 65% 0% 20% 40% 60% 80% 100% 2005 2008 2010 2013 2014 % o f O pe ra tin g In co m e* JV's Performance Products & Solutions Distribution Specialty Old PolyOne Mix Shift Highlights Specialty Transformation New PolyOne Transformation Specialty OI $5M $46M $87M $195M $242M *Operating Income excludes corporate charges and special items PolyOne Corporation Page 11 2014 2015 Target “Where we are” (Est. in 2012) Operating Income % Specialty: Global Color, Additives & Inks 14.7% 12 – 16% Global Specialty Engineered Materials 12.1% 12 – 16% Designed Structures & Solutions 7.3% 8 – 10% Performance Products & Solutions 7.7% 9 – 12% Distribution 6.1% 6 – 7.5% Specialty Platform % of Operating Income 65% 65 – 75% ROIC 11.3% 15% Adjusted EPS Growth 37% Double Digit Expansion Proof of Performance PolyOne Corporation Page 12 • Sold non-core resin assets – EPS dilutive • Completed acquisition of Spartech • Housing starts below 1.25 million units Single family units 30% below expectations • Longstanding weakness in Europe, and decline in Euro Successfully Navigating Change Since 2012 PolyOne Corporation Page 13 -100% 200% 300% 400% 500% 600% POL S&P 500 Strategy and Execution Drive Results $0.12 $0.27 $0.21 $0.13 $0.68 $0.82 $1.00 $1.31 $1.80 '06 '07 '08 '09 '10 '11 '12 '13 '14 ‘06-‘14 Adjusted EPS CAGR = 40% Adjusted EPS Share Price vs.

In late 2016, PolyOne acquired COMPTEK (Diez, Germany), a specialist in formulations based on extreme-heat polymeric materials such as PEEK, PES, PEI, PPS, PSU and PPSU.

PES/PSU/PPSU Colorants: Colorant Chromatics™