NYSE: AVNT) AVIENT CORPORATION I N V E S T O R M E E T I N G S M AY 2 0 2 2 DISCLAIMER 2 Forward-Looking Statements In this presentation, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Source: Peer data per Bloomberg market data as of April 21, 2022 86 82 86 86 84 78 77 89 86 81 80 76 76 76 67 67 11 (12) Av ie nt Av ie nt P F FU L KW R PP G R PM AV Y FM C U N VR BN R H U N H XL EC L C E AS H EM N SC L AL B 12% 18% 16% 15% 15% 14% 14% 28% 28% 26% 25% 22% 21% 19% 16% 12% 9% 9% Av ie nt T od ay Av ie nt P F AV Y PP G KW R FU L R PM C E AL B FM C AS H EC L EM N H XL H U N SC L BN R U N VR Median: 21%Median: 15% 2022 EBITDA MARGINS VS. Senior management believes the measures described above are useful to investors because they allow for comparison to Avient's performance in prior periods without the effect of items that, by their nature, tend to obscure Avient's operating results due to the potential variability across periods based on timing, frequency and magnitude.

361CGNS PANTONE(R) 361 C SIMULATION 353CGNS PANTONE(R) 353 C SIMULATION 367CGNS PANTONE(R) 367 C SIMULATION

7461CPFX EPIC PANTONE(R) 7461 C SIM 430CPFXAB EPIC PANTONE(R) 430 C SIM 570CPFXAB EPIC PANTONE(R) 570 C SIM

RHODAMINE RED CPM PANTONE(R) RED C (SIM) 1-P-704-MV NATURAL MOLDING 1-P-704 NATURAL MOLDING LATEX

109CPFXATH EPIC ATH PANTONE(R) 109 C SIM RT3830E NATURAL RT3850E NATURAL

1010 A HS NATURAL AM-0920066 NATURAL 3308CMX PANTONE(R) 3308 C SIMULATION

R&H2540 BRONZE X TR2-40GF/000 NATURAL UV Waterway Natural 2

X PK-1482306 Natural X PK-1482307 Natural 186CPFXRB EPIC PANTONE(R) 186 C SIM

Investor Day POLYONE I N V E S T O R P R E S E N T A T I O N M A R C H 2 0 1 8 FORWARD LOOKING STATEMENTS PolyOne Corporation 2 In this presentation, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. V I S I O N PolyOne Corporation 4 To be the world’s premier provider of specialized polymer materials, services and solutions C O R E V A L U E S P E R S O N A L V A L U E S Honesty IntegrityRespect Specialization Commercial Excellence Operational Excellence Globalization Collaboration ExcellenceInnovation To be the world’s premier provider of specialized polymer materials, services and solutions PolyOne Corporation 5 P O L Y O N E 2 0 1 7 R E V E N U E | $ 3 . 2 B I L L I O N Transportation 18% Industrial 16% Consumer 12% Packaging 11% Healthcare 11% Wire & Cable 9% Appliance 5% United States 59% Europe 14% Asia 10% Latin America 9% Canada 8% PolyOne Distribution 34% Performance Products & Solutions 21% Specialty Engineered Materials 19% Color Additives & Inks 26% Segment End Market Geography Building & Construction 12% Electrical & Electronics 6% 2009 2010 2011 2012 2013 2014 2015 2016* 2017* A D J U S T E D E P S E X P A N S I O N C O N S E C U T I V E Y E A R S PolyOne Corporation 6 8 $0.13 $0.68 $0.82 $1.00 $1.31 $1.80 $1.96 $2.06 $2.21 *Pro Forma for sale of DSS E A R L Y Y E A R S D E F I N E D B Y S P E C I A L T Y M I X I M P R O V E M E N T PolyOne Corporation 7 2% 76% 2005 2017 $5M $280M + 25% + 33% Specialty OI % of Operating Income Consistently Deliver Double Digit Annual EPS Growth *ROIC is defined as TTM adjusted OI after tax divided by the sum of average debt and equity less cash over a 5 quarter period PolyOne Corporation 8 2006 2017 2020 “Where we were” “Where we are” Platinum Vision ROIC* 5.0% 14.0% 15.0% Operating Income % of Sales Color, Additives & Inks 1.7% 15.5% 20%+ Specialty Engineered Materials 1.1% 12.5% 20%+ Performance Products & Solutions 5.5% 10.7% 12-14% Distribution 2.6% 6.3% 6.5-7.5% P R O O F O F P E R F O R M A N C E & P L A T I N U M V I S I O N 531 660130 149 504 607 2014 2017 R&D / Technical Marketing Sales I N V E S T M E N T I N COMMERCIAL RESOURCES D R I V I N G G R O W T H PolyOne Corporation 9 Increased commercial headcount Largest organic revenue growth since recession $2.9 $2.9 $3.2 2015 2016 2017 Revenue in billions of $ + 24% + 15% + 20% Total + 10% Organic + 7% Free Cash Flow (In millions) ROIC* PolyOne Corporation 10 $50 $116 $143 $0 $40 $80 $120 $160 $200 2012 2014 2016 2018 10.8% 11.3% 12.9% 14.0% 10.0% 11.0% 12.0% 13.0% 14.0% 15.0% 2012 2014 2016 2017 2020 Platinum Vision $200 - $220 F R E E C A S H F L O W A N D I M P R O V I N G R E T U R N S *ROIC is defined as TTM adjusted OI after tax divided by the sum of average debt and equity less cash over a 5 quarter period 15.0% $767M R E T U R N I N G C A S H T O S H A R E H O L D E R S O V E R $ 9 5 0 M I L L I O N S I N C E 2 0 1 1 PolyOne Corporation 11 $0 $150 $300 $450 $600 $750 2011 2012 2013 2014 2015 2016 2017 $0.16 $0.20 $0.24 $0.32 $0.40 $0.48 $0.58 $0.70 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 3-Year Dividend Plan Cumulative Share Repurchases (In millions) Increasing Annual Dividend Transformational Opportunity for Growth Through M&A Adjacent Opportunity for Growth Through New Product Pipeline Core Customization 3 H O R I Z O N S O F D E V E L O P M E N T PolyOne Corporation 12 Incremental development from existing base of technology New development adjacent to current technology New technology development outside of and with our current base Service adjacent markets and customers Create new markets, target new customer needs Service existing markets and customers Market Technical I N N O V A T I O N Non-Halogen Flame Retardants Barrier Technologies Fiber Colorants Advanced Composites Thermoplastic Elastomers Gordon Composites/ Polystrand – Composites GLS – Thermoplastic Elastomers ColorMatrix – Liquid Color & Additives I N N O V A T I O N P I P E L I N E PolyOne Corporation 13 PrototypeFrame Opportunity Scale-up & Test Market Build Business Case Commercial Launch (since 2015) Phase 1 Phase 2 Phase 3 Phase 4 Phase 5 8 6 8 2 2 36 5 10 13 10 4 6 7 Breakthrough Platform Derivative Number of Projects 33 17 20 15 5 90 Total Addressable Market ($ millions) - - $800 $1,400 $600 $2,800 F L A M E R E T A R D A N T P O L Y M E R S A D V A N C E D C O M P O S I T E S B A R R I E R M A T E R I A L S C O L O R A N T T E C H N O L O G I E S T H E R M O P L A S T I C E L A S T O M E R S A U N I Q U E C U S T O M E R E X P E R I E N C E Industrial Design IQ DESIGN LABS PolyOne Corporation 14 Launched in 2014, IQ Design Labs is our in-house industrial design team that focuses on material selection and processing expertise to help with problem solving, enabling our clients to develop higher performance products. Senior management believes these measures are useful to investors because they allow for comparison to PolyOne's performance in prior periods without the effect of items that, by their nature, tend to obscure PolyOne's operating results due to the potential variability across periods based on timing, frequency and magnitude.

Reactor TPO's (R-TPO's) What kind of stretch properties can I expect from my TPE? Molding conditions can dramatically affect the amount and nature of shrinkage.