SC-2870 V BLACK SC-2871 V BLACK SC-2872 V BLACK

Onflex-V 1070A-0005 Black Onflex-V 1040D-0010 natural Onflex-V 1085A-0008 Black

SC-2617 V BLUE SC-2625 V RED SC-2630 V YELLOW

SC-27015-V RED SC-1890 V RED SC-1914 V RED

AVIENT SOLUTION MEDICAL DEVICE MANUFACTURER C O M P A R T M E N T C O V E R • Improve grip with a matte rubber finish • Comply with RoHS Directive • Provide superior adhesion to PC/ABS • Achieved excellent adhesion to PC/ABS at a lower wall thickness of to 2mm • Improved aesthetics and usability with the rubber finish provided by our custom formulation • Provided quick responses to customer queries and accelerated time to market KEY REQUIREMENTS GOOD ADHESION + COMPLIANCE LEARN MORE Versollan™ Thermoplastic Elastomers Copyright © 2023, Avient Corporation.

D is t. ) K W R P P G A V Y F U L R P M G C P F M C H X L H U N E C L A S H E M N C E S C L Source: Peer data per Bloomberg market data as of November 8, 2021 Avient reflects 2021 estimated revenue of $4,750M and estimated CAPEX of $80M (excludes one-time synergy capture CAPEX of $20M) Avient Specialty Formulators Other Chemical/Specialty Companies Free Cash Flow Conversion (1) 2021E (%) Being asset light helps us to generate strong free cash flow that is in line with specialty formulators. Free cash flow conversion calculated as (EBITDA – Capex) / EBITDA HIGH FREE CASH FLOW CONVERSION Avient reflects 2021 estimated EBITDA of $580M and estimated CAPEX of $80M (excludes one-time synergy capture CAPEX of $20M) Source: Peer data per Bloomberg market data as of November 8, 2021 86 93 85 83 79 77 75 89 85 83 81 79 79 78 77 74 25 A vi en t K W R P P G A V Y F U L R P M G C P F M C U N V R C E B N R H X L A S H E C L E M N H U N S C L A L B (10) Source: Peer data per Bloomberg market data as of November 8, 2021 Total Enterprise Value / 2021E EBITDA Our current valuation with updated guidance implies an EBITDA multiple that is below many of our specialty formulator peers. With the Clariant Color business acquisition and divestment of the PP&S business, our exposure is now concentrated in less-cyclical and high-growth markets, with increased geographic diversification and a more specialized portfolio that can significantly expand EBITDA margins. 33 Avient reflects 2021 estimated EBITDA of $580M OUR VALUATION VERSUS PEERS Avient Specialty Formulators Other Chemical/Specialty Companies 11.4 20.2 16.7 16.5 14.7 12.0 10.8 40.7 29.9 26.2 13.2 12.4 11.0 10.9 9.1 9.0 7.5 6.5 A vi en t K W R P P G A V Y R P M F U L G C P A L B H X L E C L A S H F M C B N R S C L U N V R E M N C E H U N SUMMARY: WHY INVEST IN AVIENT?

D is t. ) K W R R P M P P G A V Y F U L G C P H X L F M C F O E IF F H U N E C L A S H E M N K R A C E S C L G R A A LB Median: 5%Median: 3% Source: Peer data per Bloomberg market data as of June 4, 2021 Avient reflects 2021 estimated revenue of $4,300M and excludes one-time synergy capture CAPEX ($20M) Avient Specialty Formulators Other Chemical/Specialty Companies Free Cash Flow Conversion (1) 2021E (%) Being asset light helps us to generate strong free cash flow that is in line with specialty formulators. Free cash flow conversion calculated as (EBITDA – Capex) / EBITDA Median: 84% Median: 78% HIGH FREE CASH FLOW CONVERSION Avient reflects 2021 estimated EBITDA of $560M and excludes one-time synergy capture CAPEX ($20M) Source: Peer data per Bloomberg market data as of June 4, 2021 87 89 87 86 83 81 76 88 85 83 82 81 80 78 78 78 76 72 71 69 50 18 A vi en t K W R P P G R P M A V Y F U L G C P F M C H X L U N V R IF F E C L A S H F O E C E E M N B N R H U N G R A K R A S C L A L B Source: Peer data per Bloomberg market data as of June 4, 2021 Total Enterprise Value / 2021E EBITDA Our current valuation with updated guidance implies an EBITDA multiple that is below specialty formulator peers and the majority of our chemical peers. With the Clariant Masterbatch acquisition and divestment of the PP&S business, our exposure is now concentrated in less-cyclical and high-growth markets, with increased geographic diversification and a more specialized portfolio that can significantly expand EBITDA margins. 28 Avient reflects 2021 estimated EBITDA of $560M OUR VALUATION VERSUS PEERS Avient Specialty Formulators Other Chemical/Specialty Companies 10.4 18.2 16.0 15.5 15.3 11.3 11.0 29.7 26.5 23.5 18.2 13.4 11.9 11.9 11.7 10.5 10.4 10.3 10.1 9.7 7.7 6.5 A vi en t K W R A V Y P P G R P M F U L G C P H X L A L B E C L IF F F M C B N R A S H G R A E M N F O E S C L U N V R C E K R A H U N Median: 11.7xMedian: 15.4x SUMMARY: WHY INVEST IN AVIENT?

• Laser marking - improve marking reliability and durability in all types of cable jacketing and insulating materials • Antimicrobial - help protect cables from harmful mold and bacteria growth • Nucleating agents - maintain critical dimensions and manage shrink characteristics • Chemical foaming agents - take out weight and reduce resin costs • UV stabilizers - protect resin material and extend product life • Antioxidants - maintain physical properties • Processing aids - minimize die drool associated with some materials COLORANT CHROMATICS™ HIGH- TEMPERATURE POLYMER SOLUTIONS • Fluoropolymer and high-temperature thermoplastics-based colorant and additive concentrates and compounds • Dispersed pigments for coloring PTFE • Functional additives including laser marking, foaming agents, and conductive, antistatic, radiopaque, reinforced, and cross-linked grades • Full range of printing, striping, and marking inks PRODUCT CODE LET DOWN RATIO COLOR (Munsell) CC10225921 1.00% Black CC00012573 1.00% White CC10222359 1.00% Red CC10223395 1.00% Gray CC10222361 1.00% Green CC00012376 1.00% Blue CC10222363 1.00% Orange CC10222360 1.00% Yellow CC10223394 1.00% Brown CC00012516 1.00% Purple CC10062368 1.00% Aqua CC10223396 1.00% Pink PV C PRODUCT CODE LET DOWN RATIO COLOR (Munsell) CC00000001 1.00% Black CC00012837 1.00% White CC10225296 1.00% Red CC10225298 1.00% Gray CC10225300 1.00% Green CC10225295 1.00% Blue CC10225297 1.00% Orange CC10225299 1.00% Yellow CC10225301 1.00% Brown CC10225603 1.00% Purple CC10225293 1.00% Aqua CC10225294 1.00% Pink PE ONCOLOR™ SOLUTIONS FOR TELECOMMUNICATIONS • PVC colorants designed for telecommunications and fiber optic applications • PE colorants that are excellent for foam skin and solid insulation applications • EVA colorants designed for cross-linked materials and resin applications including XLPE, XLPO, PVC, PE, and more PRODUCT CODE LET DOWN RATIO (HB Rated) LET DOWN RATIO (FV-1 Rated) LET DOWN RATIO (VW-1 Rated) COLOR (Munsell) CC10199188OC 1.00% 2.00% 2.00% Black CC1041114625 1.00% 2.00% 2.00% Blue CC1041495625 1.00% 2.00% 2.00% Brown CC1041347125 1.00% 2.00% 2.00% Gray CC1041114825 1.00% 1.00% 1.00% Green CC1041507925 1.00% 2.00% 2.00% Orange CC10371409WE 1.00% 2.00% 2.00% Pink CC1041347225 1.00% 2.00% 2.00% Purple CC1040965625 1.00% 2.00% 3.00% Red CC10269093WE 1.00% 1.00% 2.00% White CC1041270325 1.00% 2.00% 2.00% Yellow PRODUCT CODE LET DOWN RATIO COLOR (Munsell) CC00012853 1.00% Black CC00012946 1.00% White CC10221766 1.00% Red CC10221760 1.00% Gray CC10221765 1.00% Dk Green CC10221764 1.00% Lt Green CC10221757 1.00% Dk Blue CC10221761 1.00% Lt Blue CC10221767 1.00% Orange CC10221763 1.00% Yellow CC10221758 1.00% Brown CC10221762 1.00% Purple CC10224626 1.00% Tan CC10221759 1.00% Pink EV A XL PE PRODUCT CODE LET DOWN RATIO COLOR (Munsell) CC10190635 3.00% Black CC10190642 3.00% White CC10190641 3.00% Red CC10190637 3.00% Gray CC10190638 3.00% Green CC10185195 3.00% Blue CC10185197 3.00% Orange CC10190643 3.00% Yellow CC10190636 3.00% Brown CC10190640 3.00% Purple CC10190634 3.00% Aqua CC10190639 3.00% Pink PB T PRODUCT CODE LET DOWN RATIO COLOR (Munsell) CC10246438WE 2.00% Aqua CC10245005WE 2.00% Black CC10246090WE 2.00% Blue CC10264438DR 2.00% Brown CC10245008WE 2.00% Gray CC10246092WE 2.00% Green CC10264439DR 3.00% Orange CC10261866DR 2.00% Pink CC10261867DR 2.00% Purple CC10264436DR 2.00% Red CC10245006WE 2.00% White CC10246093WE 2.00% Yellow U L 28 85 ONCOLOR™ SOLUTIONS FOR ENERGY CABLE APPLICATIONS • Recommended use rate may vary depending on specific application, process, equipment, and resin grade PRODUCT CODE LET DOWN RATIO COLOR (NEMA) CC00012342 1.00% Black CC00012575 1.00% White CC00012547 1.00% Red CC10018221 1.00% Gray CC00012444 1.00% Dk Green CC10018222 1.00% Lt Green CC00012408 1.00% Dk Blue CC00012407 1.00% Lt Blue CC10013140 1.00% Orange CC00036502 1.00% Yellow CC00012363 1.00% Dk Brown CC00012373 1.00% Lt Brown CC00012526 1.00% Purple CC10018225 1.00% Tan PV C PRODUCT CODE LET DOWN RATIO COLOR (NEMA) AB13820380 3.00% Yellow AB24820333 3.00% Orange AB32820571 3.00% Pink AB33820570 3.00% Red AB44820167 3.00% Purple AB54820507 3.00% Dark Blue AB63820502 3.00% Dark Green AB72820811 3.00% Gray AB84820533 3.00% Brown AB94820333 3.00% Black CC00016954 1.00% White N YL O N ONCOLOR™ SOLUTIONS FOR AUTOMOTIVE APPLICATIONS • EVA colorants designed for use with cross-linked materials like XLPE • Recommended use rate is 1.00% and may vary depending on specific application, process, equipment, and resin grade PRODUCT CODE LET DOWN RATIO COLOR CC00012853 1.00% Black CC00012946 1.00% White CC10221766 1.00% Red CC10221760 1.00% Gray CC10221765 1.00% Dk Green CC10221764 1.00% Lt Green CC10221757 1.00% Dk Blue CC10221761 1.00% Lt Blue CC10221767 1.00% Orange CC10221763 1.00% Yellow CC10221758 1.00% Brown CC10221762 1.00% Purple CC10224626 1.00% Tan CC10221759 1.00% Pink EV A, J 11 28 PRODUCT CODE LET DOWN RATIO COLOR CC00012342 1.00% Black CC00012575 1.00% White CC00012535 1.00% Red CC00012461 1.00% Gray CC00012425 1.00% Dk Green CC00012426 1.00% Lt Green CC00012379 1.00% Dk Blue CC00012378 1.00% Lt Blue CC00012490 1.00% Orange CC00012585 1.00% Yellow CC00012363 1.00% Brown CC00012525 1.00% Purple CC00012561 1.00% Tan CC00012507 1.00% Pink PV C, J 11 28 A RANGE OF WORLD-CLASS SERVICES With manufacturing facilities and innovation centers across the globe, we work with you to understand your goals and provide the expertise you need for your wire and cable applications.

Microsoft PowerPoint - AVNT Fermium Conference - May 2023 AVIENT CORPORATION I N V E S T O R P R E S E N T A T I O N (NYSE: AVNT) M AY 4 , 2 0 2 3 H O S T E D B Y : DISCLAIMER Forward-Looking Statements Certain statements contained in or incorporated by reference into this presentation constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Avient Specialty Formulators Other Specialty / Chemical Companies 2023E(%) 36 79 87 83 81 76 73 90 79 77 76 73 69 60 22 A vi en t K W R P P G F U L A V Y R P M F M C C E H X L A S H E C L H U N E M N S C L MULTIPLE EXPANSION Avient Specialty Formulators Other Specialty / Chemical Companies Source: Peer data per Bloomberg as of April 28, 2023 Note: Avient reflects 2023 adjusted EBITDA guidance of $530M and closing share price of $38.51. Avient 2011 and 2018 valuations reflect trailing 12 months EBITDA at December 31 of the respective years. 37 EV / 2023E EBITDA Historic Multiple 6.5 8.3 9.9 14.6 13.7 13.0 11.9 8.8 18.7 17.4 11.8 10.0 9.7 9.1 8.0 7.9 A vi en t (2 01 1) A vi en t (2 01 8) A vi en t (2 02 3) K W R P P G R P M A V Y F U L E C L H X L F M C A S H S C L C E E M N H U N Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) Senior management uses comparisons of adjusted net income from continuing operations attributable to Avient shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to Avient shareholders, excluding special items, to assess performance and facilitate comparability of results.

Cosmetic brands COSMETIC BRANDS C O V E R O F A I R C U S H I O N P O W D E R C O M P A C T • Low coefficient of friction (COF) to balance the opening pressure and sealing performance • General FDA compliance • Good chemical resistance and barrier protection to water and oxygen • Overmold to PP with good compression set • Delivered chemically resistant material with excellent sealing properties and good resilience to achieve requested performance • Provided onsite technical support to improved injection speed and achieve good bonding performance • Offered a material solution that could be leveraged across the customer’s global cosmetic brands Custom Versaflex™ TPE KEY REQUIREMENTS WHY AVIENT?