Avient corporation first quarter 2023 results AVIENT CORPORATION I N V E S T O R P R E S E N T A T I O N (NYSE: AVNT) J A N U A R Y 2 0 2 4 D I S C L A I M E R 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. W H AT W E D O : W E A R E A F O R M U L ATO R CUSTOM FORMULATION 6 N O V E M B E R 2 , 2 0 2 3 W E B C A S T P R E S E N T AT I O N Complementary technologies and customer relationships offer opportunity to advance commercial strategy Dyneema®, the world’s strongest fiber™, to accelerate growth of sustainable, ultralight and high performance applications AVIENT PROTECTIVE MATERIALS FIRST YEAR 8 Composites comprises over half of Specialty Engineered Materials, compared to 9% in 2016 Proven history of success in areas such as outdoor high performance, defense and sustainable solutions Composites 44% 56% 2023E Sales Collaboration & InnovationComposites as a % of SEM People & Culture Talented, passionate, and creative associates drive continued integration success and allow two cultures to come together as one Avient Lightweight Protective Laminates: PROJECTILE PROTECTION Dyneema® Fiber Solutions Cushioning + Fit + Comfort: LONG-TERM WEAR reSound™ Versaflex™ Thermoplastic Elastomers Strength + Durability + Light-Weighting: SOLID MOUNTING BRACKETS Nymax™ Bergamid™ Complēt™ Engineered Materials Durability + Lubricity: HELMET LATCHES Lubri-One™ Internally Lubricated Polymers Color Consistency and Weatherability CUSTOMIZED SPECIFICATIONS Avient Color and Additive Solutions Antennae Performance FAST, RELIABLE CONNECTIONS PREPERM™ Low-Loss Dielectric Thermoplastics AVIENT PROTECTIVE MATERIALS C R O S S S E L L I N G O P P O R T U N I T I E S Wired Connections CONSTANT COMMUNICATION Syncure™ Cross-linkable Wire & Cable Formulations9 10 AVIENT PROTECTIVE MATERIALS C R O S S S E L L I N G O P P O R T U N I T I E S 10 Q 3 P E R F O R M A N C E 15.4% 16.3% 2022 PF 2023 Results vs. Avient reflects 2023 adjusted EBITDA guidance of $500M and estimated run-rate CAPEX of $110M. 2023E (%) 27 78 89 83 80 78 74 86 79 76 67 66 55 50 (39) A vi en t K W R FU L P P G A V Y R P M FM C C E E C L A S H H X L H U N E M N S C L Avient Specialty Formulators Other Specialty / Chemical Companies MULTIPLE EXPANSION Source: Peer data per Bloomberg as of December 29, 2023 Note: Avient reflects 2023 adjusted EBITDA guidance of $500M and closing share price of $41.57.

66461SLNS YOGA PAD LC - PMS 646 U BLUE 5000 STAN-TONE DB-15597 HI LITE BLUE

F U T U R E G ROW T H I N E XC E S S O F G D P I S D R I V E N B Y: Our company is positioned to sustainably grow at a rate that exceeds GDP. Free cash flow conversion calculated as (EBITDA – Capex) / EBITDA Source: Bloomberg market data as of November 9, 2020 Median: 82% Median: 73% H I G H F R E E C A S H F LOW C O N V E R S I O N 83 86 85 85 80 78 58 88 83 81 79 77 76 73 73 72 72 67 64 63 60 6 A v ie n t K W R R P M P P G F U L A V Y G C P F M C IF F U N V R B N R E M N E C L C E H X L F O E A S H G R A H U N K R A S C L A L B Net Debt / 2021E EBITDA (1) We typically operate at 2.5–3.0x net debt to EBITDA. Using consensus EBITDA of $466M per Bloomberg Source: Bloomberg market data as of November 9, 2020 O U R VA LUAT I O N V E R S U S P E E R S Avient Specialty Formulators Other Chemical/Specialty Companies 9.7 18.1 14.0 14.0 13.6 11.7 10.2 23.8 18.7 17.7 13.7 12.2 11.4 11.4 11.4 11.0 10.4 9.5 9.2 8.4 8.3 7.6 A v ie n t K W R R P M P P G A V Y G C P F U L E C L A L B H X L IF F F M C C E F O E A S H B N R G R A S C L E M N U N V R H U N K R A Median: 11.4xMedian: 13.8x S U M M A RY: W H Y I N V E S T I N AV I E N T ?

BLUE PVC KENT GREEN U PVC KENT PROCESS BLUE U

D is t. ) R P M K W R P P G F U L G C P F M C IF F H X L H U N F O E E M N E C L S C L K R A A S H C E G R A A L B As a specialty formulator, we don’t require significant capital investment, as compared to the base resin raw material suppliers we purchase from. Whether an additional line at an existing manufacturing plant, or a new facility in a growing region, we ramp-up quickly and cost-efficiently. 17 Median: 3% Median: 5% Capex / Revenue 2021E (%) Source: Capital IQ market data as of August 24, 2020 AV I E N T I S A SS E T L I G H T Avient Specialty Formulators Other Chemical/Specialty Companies 83 86 85 84 80 56 89 83 82 82 78 76 76 75 71 70 68 63 61 58 14 A vi e n t K W R R P M P P G F U L G C P F M C IF F U N V R B N R H X L E C L E M N F O E A S H C E G R A K R A H U N S C L A L B 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 Source: Capital IQ market data as of August 24, 2020 Median: 84% Median: 75% H I G H F R E E C A S H F L OW C O N V E R S I O N 3.1x 2.6x 0.5x 1.9x 2.8x 3.1x 4.5x -0.1x 1.8x 1.9x 2.2x 2.3x 2.4x 2.9x 3.0x 3.0x 3.2x 3.4x 3.4x 3.8x 3.9x 4.8x A vi e n t (2 0 P F ) A vi e n t (2 1 E ) G C P P P G R P M K W R F U L S C L B N R H U N E C L C E F M C A S H H X L E M N G R A A L B IF F U N V R K R A F O E Net Debt / 2021E EBITDA (1) We typically operate at 2.5–3.0x net debt to EBITDA.

APPLIANCE MAKER F O O D H A N D L I N G & C O O K I N G C O M P O N E N T S • Minimize yellow / amber color tone of PEI and PES that detracts from the perception of quality for cooking and food service appliances • Maintain inherent heat and steam resistance of PEI and PES • Food contact compatibility • Colorants counteracted yellow tones without sacrificing heat and steam resistance • Achieved a more intense blue-gray shade that reinforces appliance quality and cleanliness and improves perception of the food Colorant Chromaticsä Precolor and Masterbatch Formulations KEY REQUIREMENTS WHY AVIENT?

SC-29805 U NAT SC-1928 U HGRN STAN-TONE DB-15597 HI LITE BLUE

MD-53091 TAN 004387BGPED/U MD-72527 WHITE / 009588WTPED/U STAN-TONE DB-15597 HI LITE BLUE

Petrem Elšíkem, notářem se sídlem v Litoměřicích, na místě samém v sídle PRK Partners s.r.o. advokátní kancelář, na adrese Jáchymova 26/2, Staré Město, 110 00 Praha 1, dle § 80a a násl. notářského řádu o ---------------------------------------------------------------------------------------------------------------------- r o z h o d n u t í valné hromady společnosti PolyOne ČR, s.r.o., identifikační číslo 26689537, sídlem Pobřežní 620/3, Karlín, 186 00 Praha 8, spisová značka C 87503 vedená u Městského soudu v Praze (dále též „Společnost“), o změně obsahu společenské smlouvy (dále též „Rozhodnutí“), konané dne 21.10.2021 v budově na adrese Jáchymova 26/2, Staré Město, 110 00 Praha 1. ------------------ I. 1. Valná hromada Společnosti svým usnesením přijala toto --------------------------------------- r o z h o d n u t í o změně obsahu společenské smlouvy: a)Společenská smlouva Společnosti se mění tak, že v článku prvním „Obchodní firma, založení, vznik a právní forma společnosti“ odst. 1. a 2. nově zní takto: ---------------------- 1. Osvědčuje se, že rozhodnutí valné hromady dle článku III. bylo přijato a obsah rozhodnutí valné hromady dle článku III., o němž byl notářský zápis sepsán, je v souladu s právními předpisy a zakladatelským právním jednáním Společnosti v úplném znění. ------------------------------------------ Notář v souladu s §§ 70 a 70a notářského řádu činí toto vyjádření: ---------------------------- Předpoklady pro sepsání tohoto notářského zápisu byly splněny.

W H O W E A R E – V I S I O N , S T R AT E G Y, C U LT U R E 3 Avient Corporation (NYSE: AVNT) provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Free cash flow conversion calculated as (EBITDA – Capex) / EBITDA Median: 84% Median: 77% H I G H F R E E C A S H F L OW C O N V E R S I O N Avient reflects 2021 estimated EBITDA of $510M and excludes one-time synergy capture CAPEX ($20M) Source: Peer data per Bloomberg market data as of March 12, 2021 85 89 86 86 82 80 76 89 85 83 82 81 78 77 77 76 75 73 70 69 49 19 A vi e n t K W R P P G R P M A V Y F U L G C P F M C IF F H X L U N V R E C L A S H B N R F O E E M N C E G R A H U N K R A S C L A L B Source: Peer data per Bloomberg market data as of March 12, 2021 Total Enterprise Value / 2021E EBITDA Our current valuation implies an EBITDA multiple that is below specialty formulator peers and some of our more highly valued 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. 26 Avient reflects 2021 estimated EBITDA of $510M O U R VA LUATI O N V E R S U S P E E R S Avient Specialty Formulators Other Chemical/Specialty Companies 11.3 18.6 14.3 13.6 13.3 12.2 10.7 28.8 26.3 23.3 14.6 12.4 11.7 11.6 11.2 11.0 10.6 10.3 9.6 9.1 8.5 7.2 A vi e n t K W R A V Y R P M P P G G C P F U L H X L A L B E C L IF F F M C A S H F O E B N R C E G R A E M N S C L U N V R K R A H U N Median: 11.2xMedian: 13.5x S U M M A RY: W H Y I N V E S T I N AV I E N T ?