AVIENT CORPORATION T H I R D Q U A R T E R 2 0 2 3 R E S U L T S (NYSE: AVNT) N OV E M B E R 2 , 2 0 2 3 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. Additionally, Adjusted EPS excludes the impact of special items and amortization expense associated with intangible assets. 2 O P E N I N G RE MARK S B O B P A T T E R S O N C H A I R M A N , P R E S I D E N T A N D C E O 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 4 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 CROSS SELLING OPPORTUNITIES Wired Connections CONSTANT COMMUNICATION Syncure™ Cross-linkable Wire & Cable Formulations5 6 AVIENT PROTECTIVE MATERIALS CROSS SELLING OPPORTUNITIES 6 Q 3 P E RFO RMAN CE 15.4% 16.3% 2022 PF 2023 Results vs.

AVIENT OVERVIEW OUR VISION: Creating specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world 2023 Financial GuidanceCompany Overview 2022 Pro Forma Revenue By: 9,700 Employees 104 Manufacturing Sites 20,000+ Customers Key Highlights  Premier formulator of specialized and sustainable material solutions  Asset-light business model, with flexibility to adapt to customer needs  Best-in-class technology and service (140+ PhDs / 2,500+ patents)  History of transformation through successful M&A while consistently returning cash to shareholders  Poised for continued future growth in excess of GDP $3.3B Revenue $2.40 $525M Adjusted EBITDA 16.0% Adjusted EBITDA Margins $180M Free Cash Flow 3.0x Net Leverage Over $1B in share buybacks since 2011 Raised dividend for 12 consecutive years, a 16% CAGR since 2011 Geography Segment Industry U.S. & Canada 64% 36% Specialty Engineered Materials Color Additives and Inks 40% 37% 18% 9% 4% 4% Building & Energy Telecom 4 CREATING A WORLD-CLASS SUSTAINABLE ORGANIZATION 1. 6.5% annualized long term sales growth leveraging sustainable solutions, composites, healthcare and emerging regions 2. WHAT WE DO: WE ARE A FORMULATOR 6 CUSTOM FORMULATION JU LY 27 , 2023 W EB CAS T P RE SE N TATI O N COMPOSITES PORTFOLIO D Y N E E M A ® E X P A N D S O U R E N G I N E E R E D F I B E R S A N D P A N E L S T E C H N O L O G Y LFT Tapes Laminates/Panels Shapes Pultrusion Engineered Fibers 8 DEFENSE TELECOMMUNICATIONS ENERGY TRANSPORTATION Military • Law Enforcement First Responders Body Armor • Helmets Vehicle Protection Sustainable Infrastructure Offshore Wind Electrical Grid Protection EV Battery Components Commercial Laminates Body & Trim • Air Cargo and Railroad Car Panels 5G Applications Fiber Optic Cables Satellite Communications Connectors and Components 9 COMPOSITES SERVE DIVERSIFIED END MARKETS INDUSTRIAL Lifting Slings • Aquaculture High Pressure Pipe Conveyer Springs Q 2 P ER FO RM A N CE Q2 2023 PERFORMANCE VS.

Revised: December 20, 2024 ANNEX A COVERED EMPLOYEES All Directors All Elected Officers All Appointed Officers Assistant Controller Executive Assistants to Covered Employees Corporate Communications/Investor Relations (all levels) Internal Audit VP, Directors, Managers and Staff of Audit (all levels), Tax Managers and Tax Analysts, Staff of Tax (all levels) Directors, Managers and Staff, Mergers and Acquisitions and functional professionals supporting Mergers and Acquisitions (including Legal professionals) All Other Employees (including Finance and IT employees) with access to full quarterly results within the Avient Systems Secretaries and Direct-Reporting Assistants to any Covered Employee Financial and Business Consultants who have undertaken to comply with this policy Revised: December 20, 2024 ANNEX B Please access the PeopleLink home page and search for “pre-clearance” after clicking “My Help” General Counsel: Amy M. Sanders Phone: (440) 930-1318 For Pre-clearance Contact: Amy M.

Robert M. AVERAGE TENURE 8 years AVERAGE AGE 61 RACIAL 17% Board of Directors Governance GENDER 25% female TOTAL DIVERSITY 42% HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2022 80 https://www.avient.com/sites/default/files/2023-01/Corporate%20Governance%20Guidelines%20REV%202022.pdf Robert M. POTENTIAL IMPACT ON BUSINESS POTENTIAL FINANCIAL IMPACTS POTENTIAL OPPORTUNITIES CLIMATE-RELATED IMPACTS Time Horizon Inability to remain competitive Regulatory operations curtailment Reduced production capacity Increased operating costs Reputational damage Reduced demand for products Fines/other regulatory impacts Revenue Expenditures Assets Capital costs More efficient production processes Emergence of new technologies Increased market share TR AN SI TI ON POLICY AND LEGAL Risk of regulatory change (carbon pricing) S/M/L ✓ ✓ ✓ ✓ ✓ ✓ ENERGY TECHNOLOGY Risk of energy disruption M ✓ ✓ ✓ ✓ ✓ Opportunity to reduce resource consumption S/M/L ✓ ✓ ✓ ✓ Opportunity for new technology to enable use of sustainable feedstocks M ✓ ✓ ✓ ✓ ✓ MARKET Risk of decreased availability of raw materials M ✓ ✓ ✓ ✓ ✓ Risk of product alternatives M ✓ ✓ ✓ ✓ Opportunity for products with low environmental impact S/M/L ✓ ✓ ✓ ✓ ✓ REPUTATION Risk of perceived inadequacy of climate action M/L ✓ ✓ ✓ PH YS IC AL ACUTE Risk of extreme temperatures S/M/L ✓ ✓ ✓ ✓ ✓ Risk of hurricanes/wind S/M/L ✓ ✓ ✓ ✓ ✓ Risk of flooding S/M/L ✓ ✓ ✓ ✓ ✓ CHRONIC Risk of drought S/M/L ✓ ✓ S Short: 0–5 years M Medium: 5–15 years L Long: 15–30 years HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2022 102 Year Ended December 31, Reconciliation to EBITDA and Adjusted EBITDA 2006 2018 2022 Sales $ 2,622.4 $ 3,533.4 $ 3,396.9 APM pro forma adjustments - 8 months 2022* 256.1 Pro forma sales $ 3,653.0 Net income from continuing operations – GAAP $ 133.5 $ 160.8 $ 83.1 Income tax expense (benefit) 29.7 36.4 (19.3) Interest expense 63.1 62.8 119.8 Depreciation and amortization 57.1 91.5 162.5 EBITDA $ 283.4 $ 351.5 $ 346.1 Special items, before income tax (34.0) 59.5 194.0 Interest expense included in special items — — (26.0) Depreciation and amortization included in special items — (3.0) (5.5) JV - equity income (107.0) — — APM pro forma adjustments - 8 months 2022* — — 83.1 Adjusted EBITDA $ 142.4 $ 408.0 $ 591.7 EBITDA as a % of sales 5.4 % 11.5 % 16.2 % Reconciliation of Pro Forma Adjusted EPS 2006 2018 2022 Net income from continuing operations attributable to Avient common shareholders $ 130.9 $ 161.1 $ 82.8 Joint venture equity earnings, after tax (68.5) — — Special items, after tax (21.2) 44.6 144.6 Special items, tax adjustments (30.0) (10.4) (28.4) Amortization expense, after tax 1.4 19.5 49.0 Adjusted net income from continuing operations attributable to Avient common shareholders $ 12.6 $ 214.8 $ 248.0 Pro forma adjustments* 13.6 APM pro forma amortization expense, after tax* 19.1 Pro forma adjusted net income from continuing operations attributable to Avient shareholders $ 280.7 Diluted shares 92.8 80.4 92.2 Adjusted EPS attributable to Avient common shareholders $ 0.14 $ 2.67 $ 3.04 * Pro forma adjustment to reflect APM results for the period before Avient ownership including the impacts of debt financing and paydown of debt with net proceeds from the Distribution sale.

VERSAFLEX™ HC MEDICAL TUBING SERIES • Improve extrusion rates, achieve high service temperature performance or increase clarity in medical tubing • Meet biopharmaceutical needs for weldability and minimize extractables during processing VERSALLOY™ HC SERIES • Obtain better flow in long, thin paths and lower shrink rates versus typical TPVs with our alloys, made with Santoprene™ TPV • Color easily and obtain a smooth tactile feel VERSAFLEX™ HC GASKETS & STOPPERS SERIES • Achieve no coring, good puncture and resealability in static stoppers • Meet low COF and low stiction requirements in dynamic seals CL E SERIES • Increase clarity and flexibility in bags, bottles and films • Mitigate risk with plasticizer-free formulations for film extrusion • Deliver excellent odor & O2 barrier performance for film extrusion INDUSTRY BULLETIN TPE HEALTHCARE PRODUCT SELECTOR GUIDE Versaflex™ HC MT Series Versaflex™ HC MT222 Clear 66A 0.88 14 - 334 2.30 629 4.34 898 6.19 430 220 36 ✔ ✔ High clarity, without plasticizersVersaflex™ HC MT224 Clear 75A 0.89 19 - 468 3.23 773 5.33 1360 9.40 530 321 56 ✔ ✔ Versaflex™ HC MT226 Clear 84A 0.88 20 - 606 4.17 885 6.10 1600 11.00 600 433 76 ✔ ✔ Versaflex™ HC MT317 Clear 68A 0.89 17 69 450 3.10 660 4.55 870 6.00 470 221 39 ✔ ✔ Very high service temperature Versaflex™ HC BT218 Natural 67A 0.89 19 69 381 2.60 683 4.70 1186 8.20 608 - - ✔ ✔ Weldable, kink resistant Versaflex™ HC Gaskets & Stoppers Series Versaflex™ HC 2110-35N Natural 34A 0.90 19 47 145 1.00 261 1.80 400 2.76 620 97 17 ✔ ✔ Good resealing Versaflex™ HC 2110-43N Natural 43A 0.98 12 46 134 0.92 368 2.54 723 4.98 710 - - ✔ ✔ Good compression set Versaflex™ HC 2110-57B Black 59A 1.01 20 37 369 2.54 558 3.85 537 3.70 350 147 26 ✔ ✔ Low stiction Versaflex™ CL E Series Versaflex™ CL E85 Clear 84A 0.90 20 72 752 5.18 1160 8.00 1550 10.70 450 433 76 ✔ ✔ High clarity, without plasticizers; E95 also offers excellent odor & O2 barrier Versaflex™ CL E90 Clear 90A 0.90 27 73 1000 6.89 1230 8.50 1830 12.60 57 - - ✔ ✔ Versaflex™ CL E95 Clear 95A 0.90 38 71 1680 11.60 1730 11.90 2500 17.20 580 720 126 ✔ ✔ Versaflex™ HC 3810 Series Versaflex™ HC 3810-20N Natural 20A 0.88 16 54 123 0.80 185 1.30 342 2.40 650 - - ✔ - Formulated without animal derivatives, excellent colorability, translucent Versaflex™ HC 3810-30N Natural 30A 0.89 18 58 170 1.20 245 1.70 459 3.20 680 - - ✔ - Versaflex™ HC 3810-40N Natural 40A 0.88 19 59 191 1.30 275 1.90 506 3.50 670 - - ✔ - Versaflex™ HC 3810-50N Natural 50A 0.89 21 61 264 1.80 366 2.50 699 4.80 690 - - ✔ - Versaflex™ HC 3810-60N Natural 60A 0.88 24 65 459 3.20 594 4.10 790 5.40 510 - - ✔ - Versaflex™ HC 3810-70N Natural 70A 0.88 28 67 535 3.70 684 4.70 1000 6.90 570 - - ✔ - Versaflex™ HC 3810-80N Natural 80A 0.88 30 67 689 4.80 869 6.00 1390 9.60 620 - - ✔ - Versaflex™ HC 3810-90N Natural 90A 0.88 27 89 1087 7.50 1350 9.30 1890 13.00 570 - - ✔ - Versalloy™ HC 9210 Series Versalloy™ HC 9210-45N Natural 45A 0.89 19 39 160 1.10 320 2.20 484 3.33 480 100 18 - ✔ Smooth surface aestheticsVersalloy™ HC 9210-55N Natural 53A 0.89 20 44 208 1.44 335 2.31 580 4.00 610 120 21 - ✔ Versalloy™ HC 9210-70N Natural 70A 0.89 23 53 356 2.45 510 3.52 780 5.38 590 180 32 - ✔ Versalloy™ HC 9220 Series Versalloy™ HC 9220-70 Natural 70A 0.95 17 51 453 3.12 - - 643 4.43 265 208 36 ✔ ✔ ExtrudableVersalloy™ HC 9220-80 Natural 80A 0.94 18 59 553 3.67 777 5.36 945 6.52 415 208 36 ✔ ✔ Versalloy™ HC 9220-90 Natural 90A 0.94 25 55 1030 8.13 1350 9.33 1945 13.45 620 400 70 ✔ ✔ Standard Healthcare Grades Versaflex™ G2705N Natural 60A 0.88 - - - - 528 3.64 670 4.62 470 - - ✔ ✔ Natural, high strength Versaflex™ CL 2242 Clear 43A 0.89 23 - 152 1.05 294 2.02 731 5.00 780 124 22 ✔ ✔ High clarity, boilable Versaflex™ CL 2250 Clear 50A 0.89 20 - 220 1.52 337 2.32 827 5.70 770 140 25 ✔ ✔ Versaflex™ OM Series Versaflex™ OM 1040X Natural 42A 0.92 22 - 180 1.24 301 2.08 504 3.47 580 100 18 ✔ ✔ ABS/PC overmoldVersaflex™ OM 3060 Clear 59A 0.90 33 - 420 2.90 360 2.48 500 3.45 480 180 32 ✔ ✔ Color Hardness Specific Gravity Compression Set @ 23°C Compression Set @ 100°C 100% Modulus 300% Modulus Tensile Strength Elongation Tear Strength ISO 10993 USP VI Special Characteristics ASTM Shore A ASTM/ISO ASTM % ASTM % ASTM psi Mpa ASTM psi Mpa ASTM psi ISO Mpa ASTM % ASTM pll ISO kN/m GENERAL PROPERTIES TENSILE PROPERTIES OTHER For further information on specific grades, review technical data sheets.

Calculate using Let Down Percentage: Cost/lb of Concentrate x (Let Down Percentage/100) = Coloring Cost Calculate using Let Down Ratio: Cost/lb of Concentrate – Cost/lb of Resin Let Down Ratio +1 = Coloring Cost TWO WAYS TO CALCULATE COLORING COSTS TROUBLESHOOTING TWO WAYS TO CALCULATE COLORING COSTS SYMPTOM CAUSE REMEDY Color Variation Shot-to-Shot Poor Omnicolor preblending Pigment has insufficient thermal stability More thorough blending Ensure correct machine temperature control Screw Slip Premature melting of Omnicolor Excessive addition rate Reduce heat in feed zone Check addition rate and reduce if necessary Overall Good Distributive Mixing With Streaks or Dots of Another Color Poor pigment dispersion in concentrate Return concentrate for replacement Black Streaks or Splotches Degraded polymer in barrel Clean screw and barrel Poor Distributive Mixing (Streaking) Insufficient plastification See processing instructions Loss of Color Pigment has insufficient thermal stability Change to more heat stable colorant Ensure correct machine temperature control PROCESSING TEMPERATURES OM0001 OC0UFB White 200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM0005 OC0UFC Bright White 200+ 260 260+ 260 200+ 300+ NS 300+ OM0330 OC0UFD Polar White 200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM0332 OC0SAD Coconut 200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM1275 OC0UFF Magnolia **200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM1293 OC0SAE Vanilla **200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM1625 OC1SAE Sunflower Yellow 200+ 280 260 260 200+ 280 NS 280 OM1637 OC1SAF Daffodil Yellow 200 240 220 NS NS NS NS NS OM1690 OC1UFD Citrus # *200+ NS 260 250 NS 280+ NS 280+ OM1693 OC1UFE Banana *200+ NS 280+ 280+ NS 280+ NS 280+ OM1696 OC1SAG Jasmine 200+ 280 260 260 200+ 280+ NS 280+ OM1700 OC1UFG Canary Yellow 200+ 280 260 260 200+ 280 NS 280 OM1702 OC1SAH Marigold # *200+ NS 260+ 260+ NS 300 NS 300 OM1704 OC8SAF Ivory **200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM1707 OC8SAG Cream 200+ 280+ 260+ 260+ 200+ 300+ 280+ 300+ OM1751 N/A Sol Yellow 200+ 260 260 280 200+ 250+ NS 280 OM1753 N/A Sherbert Lemon 200 240 220 NS NS NS NS NS OM1831 N/A Linen 200+ 280+ 260+ 280+ 200+ 265 NS NS OM1832 N/A Buttermilk 200+ 280+ 260+ 280+ 200+ NS NS NS OM1834 N/A Chick 200+ 240 220 NS NS NS NS NS OM1839 N/A Custard 200+ 280+ 260+ 280+ 200+ NS NS NS OM1845 N/A Yolk 200+ 280+ 260+ 280+ 200+ 265 NS NS OM2239 OC2UFB Seville Orange 200+ 280 260 260 200+ NS NS NS OM2243 OC2SAE Mandarin Orange 200 240 220 NS NS NS NS NS OM2250 OC2SAF Pumpkin 200+ 280 260 240 200+ NS NS NS OM2252 OC2SAG Nectarine # *200+ NS 280+ 280+ NS 300 NS 300 OM2291 N/A Carrot 200+ 280 260 280 200+ NS NS NS OM3223 OC3SAE Strawberry Red 200+ 280 260 260 200+ NS NS NS OM3364 OC3SAF Rose Pink 200+ 280 260 260 200+ NS NS NS OM3513 OC2SAH Flesh Pink **200+ 280 260 260 200+ NS NS NS OM3788 OC3SAH Cherry Red 200+ 280 260 260 200+ NS NS NS OM3801 OC3SAI Pastel Pink 200+ 280 260 260 200+ NS NS NS OM3820 OC3SAJ Flame Red *200 NS 280+ 280+ NS 280+ 280+ 280+ OM3849 OC3SAK Lobster Red 200 260 220 NS NS NS NS NS OM3850 OC3UFJ Tomato Red 200+ 280 260 260 200+ 280 NS 280 OM3853 OC3SAL Fuchsia 200 260 200 NS NS NS NS NS OM3856 OC3SAM Admiral Red # *200+ NS 260+ 260+ NS 300 NS 300 OM3861 OC3UFM Cardinal Red 200+ 280 260 260 200+ 280 NS 280 OM3864 OC3SAN Fire Engine Red # *200+ NS 260+ 260 NS 300 NS 300 OM3872 OC3SAP Rocket Red *200 NS 280+ 280+ 280+ 280+ NS 280+ OM3879 OC3SAQ Raspberry 200 260 200 NS NS NS NS NS OM3947 N/A Brilliant Red 200+ 280 260 260 200+ 250+ NS NS OM3951 N/A Poppy Red 200 260 220 NS NS NS NS NS OM3955 N/A Valentine Red 200+ 280 260 260 200+ 250+ NS NS OM3958 N/A Bubblegum Pink 200+ 280 260 260 200+ 250+ NS NS OM33053 N/A Ruby 200 240 220 NS NS NS NS NS OM4043 OC3SAR Burgundy 200 230 200 NS 200 NS NS NS OM4204 OC4SAA Mulberry 200+ 280 260 260 200 280 NS 280 OM4219 N/A Cerise 200+ 280 260 260 200+ 250+ NS NS TEMPERATURE CONVERSION TABLE °C 200 220 240 260 280 300 °F 392 428 464 500 536 572 NOTES * Suitable for use in all PVC except plasticized PVC ** Suitable for use in all PVC except tin stabilized PVC OM5001 OC5UFB Sky Blue 200+ 260 260+ 280 200+ 280 280 280 OM5009 OC5SAD Powder Blue 200+ 280+ 260+ 280+ 200+ 300 280+ 300 OM5011 OC5UFD Mid Blue 200+ 280+ 260+ 280+ 200+ 300 280+ 300 OM5027 UC5UFF Royal Blue 200+ 240 220 NS NS NS NS NS OM5034 OC5SAF Pale Blue 200+ 280+ 260+ 280+ 200+ 300 280+ 300 OM5065 OC5SAG Navy Blue 200+ 280+ 260+ 280+ 200+ 300 280+ 300 OM5179 OC5UFI Ultra Blue 200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM5485 OC5UFJ Pacific Blue 200+ 280+ 260+ 280+ 200+ 300 280+ 300 OM5982 OC5SAI Baby Blue 200+ 260+ 260+ 280+ 200+ 300 280+ 300 OM55094 OC4UFB Purple 200+ 260 240 240 200+ NS NS NS OM55157 OC5UFS Ice Blue 200+ 280+ 260+ 280+ 200+ 300 280+ 300 OM55160 OC5SAH Midnight Blue # *200+ NS 260 260 NS 300 NS 300 OM55162 OC5UFM Cornflower Blue 200+ 280+ 260+ 280+ 200+ 300 280+ 300 OM55302 N/A African Violet 200+ 280 260 260 200+ 250+ NS NS OM55484 N/A Mistral 200+ 280+ 260+ 280+ 200+ 265 280+ 300+ OM55497 N/A Lavender 200+ 280+ 260+ 280+ 200+ 265 280+ 300+ OM55500 N/A Bluebell 200+ 280+ 260+ 280+ 200+ 265 280+ 300+ OM55502 N/A Lilac 200+ 240 240 NS 200+ NS NS NS OM6037 N/A Aqua 200+ 280+ 260+ 280+ 200+ 265 280+ 300+ OM6969 OC6UFL Alpine Green 200+ 280 260 260 200+ 280 NS 280 OM6985 OC6SAK Spearmint Green 200+ 280+ 260+ 280+ 200+ 300 280+ 300 OM6994 OC6UFN Leaf Green 200 240 220 NS NS NS NS NS OM66070 OC6UFC Fern Green 200+ 280 260 260 200+ 280 NS 280 OM66072 OC6SAD Springtime 200+ 280 260 260 200+ 280 NS 280 OM66075 OC6SAE Racing Green 200+ 280 260 260 200+ 280+ NS 280+ OM66083 OC6SAF Fresh Green 200+ 280 260 260 200+ 280 NS 280 OM66087 OC6UFG Sage Green 200+ 280 260 260 200+ 280 NS 280 OM66088 OC5UFQ Marine Blue 200+ 280 260 260 200 280 NS 280 OM66099 OC6SAG Lime Green *200+ NS 260 250 NS 280+ NS 280+ OM66100 OC6SAH Olive Green 200+ 280+ 260+ 260+ 200+ 300+ 280+ 300+ OM66159 N/A Pod Green 200 240 220 NS NS NS NS NS OM66161 N/A Ocean Green 200+ 280 260+ 260+ 200+ 265 280+ 300 OM66301 N/A Dewdrop 200+ 260+ 260+ NS 200+ NS NS 280+ OM66303 N/A Grass Green 200+ 260+ 260+ NS 200+ NS NS 280 OM66306 N/A Lettuce Green 200+ 260+ 260+ NS 200+ NS NS 280 OM66307 N/A Apple Green 200+ 260+ 260+ NS 200+ NS NS 280 OM7002 OC7SAE Light Grey 200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM7020 OC7UFD Dark Grey 200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM7021 OC7SAF Ash Grey 200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM7053 OC7UFF Mid Grey 200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM7378 OC7UFG Dove Grey 200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM7759 OC7UFJ Soft Grey 200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM7994 OC9SAG Graphite 200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM7996 OC7SAH Moonstone 200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM7999 OC7UFN Pebble ** 200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM77000 OC7SAG Cloud Grey 200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM77007 OC9SAE Mink ** 200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM77013 OC5SSA Dusk 200+ 280+ 260+ 280+ 200+ 265 280+ 300 OM77140 N/A Putty 200+ 280 260+ 260+ 200+ 265 280+ 280 + Potential use at temperatures above those indicated NS Not suitable for use in polymer indicated # Contains dyestuff which will migrate from PE/PP and all other polyolefins PROCESSING TEMPERATURES OM77142 N/A Storm Grey 200+ 280 260+ 260+ 200+ 265 280+ 300+ OM77326 N/A Vapour 200+ 280+ 260+ 280+ 200+ 265 280+ 300+ OM77327 N/A Pigeon 200+ 280+ 260+ 280+ 200+ 265 280+ 300+ OM77330 N/A Shark 200+ 280+ 260+ 280+ 200+ 265 280+ 300+ OM8004 OC8SAH Chocolate Brown ** 200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM8005 OC8SAI Terracotta ** 200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM8018 OC8SAJ Light Brown ** 200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM8021 OC8SAK Mushroom ** 200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM8029 OC8SAL Mid Brown ** 200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM8142 OC8UFK Dark Brown ** 200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM8332 OC8ASM Mahogany ** 200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM8399 OC8SAN Rosewood ** 200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM88721 OC8SAP Toffee ** 200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM88723 OC8SAQ Honey Beige ** 200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM88726 OC8SAR Chestnut Brown **200+ 280 260 260 200+ 280+ 280+ 280+ OM88729 UN88729 Beige **200+ 280+ 260+ 260+ 200+ 300+ 280+ 300+ OM88820 N/A Fudge **200+ 280 260+ 260+ 200+ 265 280+ 300 OM88833 N/A Demerara **200+ 280 260 260 200+ 250+ NS 280 OM88942 N/A Sandstone 200+ 280+ 260+ 280+ 200+ 265 280+ 300+ OM0055 OC9UFA Deep Black 200+ 280+ 260+ 280+ 200+ 265 280+ 300+ OM0086 OC9SAD Ebony # *200+ NS 260 260 NS 300 NS 300 OM0093 N/A Onyx 200+ 280 260+ 260+ 200+ 260 280+ 300+ OM0174 N/A Pearl White 200+ 280+ 260+ 260+ 200+ 265 280+ 300 OM0448 N/A Satin Pearl 200+ 280+ 260+ 280+ 200+ 265 280+ 300+ OM1830 N/A Straw Pearl 200+ 280+ 260+ 280+ 200+ NS NS NS OM33051 N/A Shrimp Pink 200+ 280+ 260+ 260 200+ NS NS NS OM55483 N/A Azure Blue 200+ 280+ 260+ 280+ 200+ 265 280+ 300+ OM55495 N/A Arctic Pearl 200+ 280+ 260+ 280+ 200+ 265 280+ 300+ OM66297 N/A Mint Pearl 200+ 280+ 260+ 280+ 200+ 265 280+ 300+ OM0541 OC8SAD Gold NS 240 240 240 200+ NS NS NS OM0548 OC8SAE Aztec Gold # *200+ NS 260 260 NS 300 NS 300 OM0567 OCCSAD Copper NS 240 240 240 200+ NS NS NS OM0574 N/A Summer Bronze **200+ 280 260+ 260+ 200+ 265 280 300 OM0701 OC7UFA Silver 200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM0739 OC7SAD Pewter 200+ 280+ 260+ 280+ 200+ 300+ 280+ 300+ OM1268 OC1SAD FL Yellow *200+ NS 260+ 260+ NS 300 NS 300 OM2266 N/A FL Orange # *200+ NS 260+ 260+ NS 265 NS 300 OM3752 OC3SAG FL Pink # *200+ NS 260+ 260+ NS 300 NS 300 OM6941 OC6SAJ FL Green # *200+ NS 260+ 260+ NS 300 NS 300 OM1011TR N/A TR Yellow# *200+ NS 260+ 260+ NS 265 NS 300 OM1833TR N/A TR Lime # *200+ NS 260+ 260+ NS 265 NS 300 OM1846TR N/A Yellow Edge Glow # *200+ NS 260+ 260+ NS 265 NS 280 OM2034TR OC2SAD TR Amber # *200+ NS 260 280 NS 300 NS 300 OM2294TR N/A Orange Edge Glow # *200+ NS 260+ 260+ NS 265 NS 280 OM3012TR OC3SAD TR Red # *200+ NS 260+ 260 NS 300 NS 300 OM5016TR OC5SAE TR Blue # *200+ NS 260+ 260 NS 280 NS 280 OM6881TR OC6SAI TR Green # *200+ NS 260+ 260 NS 300 NS 300 OM7903TR OC9SAF TR Grey *200+ 280+ 260+ 280+ 200+ 300 280+ 300 OM33052TR N/A TR Claret # *200+ NS 260+ 260+ NS 265 NS 280 OM33055TR N/A Pink Edge Glow # *200+ NS 260+ 260+ NS NS NS 300 TEMPERATURE CONVERSION TABLE °C 200 220 240 260 280 300 °F 392 428 464 500 536 572 OM55488TR N/A TR Amethyst # *200+ NS 260+ 260+ NS 265+ NS 300 OM89050TR N/A TR Brown NS NS 260+ 280+ NS 265 NS 300 OM0279HT N/A Diamond White 200+ 280+ 260+ 280+ 200+ 265 280+ 300+ OM0447HT N/A Cumulus 200+ 280+ 260+ 280+ 200+ 265 280+ 300+ OM1739HT N/A Melon Yellow # *200+ NS 260+ 260+ NS 265 300+ 300+ OM1740HT N/A Pineapple # *200+ NS NS 260+ NS 265 300+ 300+ OM1829HT N/A Hornet # *200+ NS NS 260+ NS 265 300+ 300+ OM2264HT N/A Fresh Orange # *200+ NS NS NS NS 265 300+ 300+ OM3930HT N/A Deep Red # *200+ NS 260+ 260+ NS 265 300+ 300+ OM3940HT N/A Sunset # *200+ NS NS NS NS 265 300+ 300+ OM4217HT N/A Claret # *200+ NS 260+ 260+ NS 265 300+ 300+ OM33049HT N/A Lava # *200+ NS NS NS NS 265 300 300 OM33050HT N/A Poinsettia # *200+ NS NS NS NS 265 300 300 OM66148HT N/A Mid Green 200+ 280+ 260+ 260+ 200+ 265 300+ 300+ OM66294HT N/A Forest Green # NS NS NS NS NS 265 280+ 300+ OM66295HT N/A Astro # *200+ NS 260+ 280+ NS 265 280+ 300+ OM77323HT N/A Dolphin 200+ 280+ 260+ 280+ 200+ 265 280+ 300+ OM77324HT N/A Slate 200+ 280+ 260+ 280+ 200+ 265 280+ 300+ OM0038 N/A Value White 200+ 260+ 260+ 280+ 200+ 265 280+ 300+ OM0246 N/A Stone Effect 200+ 260 280 280+ NS 265 280 300 OM0299 N/A Pearl 200+ 260+ 260+ 280+ 200+ 265 280 300 OM0589 N/A Metallic Sand 200+ 280 260+ 280+ 200+ 265 300 300 OM0590 N/A Autumn Gold 200+ 280 260+ 260 200+ 255 NS NS OM0592 N/A Tropical Pearl 200+ 260 260 260 200+ 250 NS NS OM0593 N/A Inca Gold 200+ 280 260+ 280+ 200+ 250 280 280 OM0797TR N/A Sparkle 200+ NS 280 280 200 265 280 300 OM1339 N/A Value Yellow 200+ 280 280 280+ 200+ 265 280 300 OM5972 N/A Value Blue 200+ 280+ 260+ 280+ 200+ 265 280+ 300+ OM9074 N/A Odyssey 200+ 280 260+ 280+ 200+ 265 300 300 OM33074 N/A Spanish Earth 200+ 280 260 260 200+ 250 NS NS OM33075 N/A Sunset Pearl 200+ 280 260 260 200+ 250 NS NS OM33100TR N/A Pink Sparkle NS NS 260 260 NS NS NS NS OM33111 N/A Value Red 200+ 240 220+ NS 200+ NS NS NS OM55559 N/A Soft Lilac 200+ 280 260 250 200+ 265 NS 280 OM55561 N/A Atlantic Pearl 200+ 280 260+ 280 200+ 265 280 280 OM55563 N/A Midnight Satin 200+ 280 260+ 280 200+ 265 200 280 OM55564 N/A Frost Bite 200+ 280 260 260 200+ 265 NS 280 OM55565 N/A Winter Wind 200+ 280 260+ 280+ 200+ 265 280 300 OM55566 N/A Mirage 200+ 280 260 260 200+ 265 NS 280 OM55567 N/A Purple Silk 200+ 260 250 250 200+ NS NS NS OM55666TR N/A Blue Sparkle NS NS 260+ 260+ NS 265 NS 280 OM55700TR N/A Violet Sparkle NS NS 260 260 NS 265 NS 300 OM66302 N/A Bottle Green 200+ 280+ 260+ 280+ 200+ 265 NS 300+ OM66344 N/A Arctic Moss 200+ 280 260+ 280+ 200+ 265 280 300 OM66345 N/A Grape 200+ 280 260+ 270 200+ 260 NS 280 OM66380 N/A Value Green 200+ 280+ 260+ 280+ 200+ 265 280+ 300+ OM77450 N/A Value Grey **200+ 280+ 260+ 280+ 200+ 265 280+ 300+ NOTES * Suitable for use in all PVC except plasticized PVC ** Suitable for use in all PVC except tin stabilized PVC + Potential use at temperatures above those indicated NS Not suitable for use in polymer indicated # Contains dyestuff which will migrate from PE/PP and all other polyolefins COLOR CHART White UK OM0001 Stock US OC0UFB Sherbert Lemon UK OM1753 Flame Red UK OM3820 Stock US OC3SAJ Cerise UK OM4219 Bright White UK OM0005 Stock US OC0UFC Linen UK OM1831 Lobster Red UK OM3849 Stock US OC3SAK Sky Blue UK OM5001 Stock US OC5UFB Polar White UK OM0330 Stock US OC0UFD Buttermilk UK OM1832 Tomato Red UK OM3850 Stock US OC3UFJ Powder Blue UK OM5009 Stock US OC5SAD Coconut UK OM0332 Stock US OC0SAD Chick UK OM1834 Fuchsia UK OM3853 US OC3SAL Mid Blue UK OM5011 Stock US OC5UFD Magnolia UK OM1275 Stock US OC0UFF Custard UK OM1839 Admiral Red UK OM3856 US OC3SAM Royal Blue UK OM5027 Stock US OC5UFF Vanilla UK OM1293 Stock US OC0SAE Yolk UK OM1845 Cardinal Red UK OM3861 Stock US OC3UFM Pale Blue UK OM5034 Stock US OC5SAF Sunflower Yellow UK OM1625 Stock US OC1SAE Seville Orange UK OM2239 Stock US OC2UFB Fire Engine Red UK OM3864 US OC3SAN Navy Blue UK OM5065 US OC5SAG Daffodil Yellow UK OM1637 Stock US OC1SAF Mandarin Orange UK OM2243 US OC2SAE Rocket Red UK OM3872 Stock US OC3SAP Ultra Blue UK OM5179 Stock US OC5UFI Citrus UK OM1690 Stock US OC1UFD Pumpkin UK OM2250 Stock US OC2SAF Raspberry UK OM3879 US OC3SAQ Pacific Blue UK OM5485 Stock US OC5UFJ Banana UK OM1693 Stock US OC1UFE Nectarine UK OM2252 Stock US OC2SAG Brilliant Red UK OM3947 Stock Baby Blue UK OM5982 US OC5SAI Jasmine UK OM1696 US OC1SAG Carrot UK OM2291 Poppy Red UK OM3951 Purple UK OM55094 Stock US OC4UFB Canary Yellow UK OM1700 Stock US OC1UFG Strawberry Red UK OM3223 Stock US OC3SAE Valentine Red UK OM3955 Ice Blue UK OM55157 US OC5UFS Marigold UK OM1702 US OC1SAH Rose Pink UK OM3364 US OC3SAF Bubblegum Pink UK OM3958 Midnight Blue UK OM55160 US OC5SAH Ivory UK OM1704 Stock US OC8SAF Flesh Pink UK OM3513 US OC2SAH Ruby UK OM33053 Cornflower Blue UK OM55162 Stock US OC5UFM Cream UK OM1707 US OC8SAG Cherry Red UK OM3788 US OC3SAH Burgundy UK OM4043 Stock US OC3SAR Sol Yellow UK OM1751 Stock Pastel Pink UK OM3801 US OC3SAI Mulberry UK OM4204 Stock US OC4SAA Due to printing or monitor variations, color shown may vary from actual color.

D ll ar ( $) M il li 2017 2018 2019 2020 2021 2022 2023 $90 from products introduced in the last 5 years 37% of sales Revenue from Sustainable Solutions* Vitality Index Investment in Innovation *Avient Sustainable Solutions definitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) (1)2020 is Pro Forma to include full year of the Clariant Color business (2)2022 is Pro Forma for the acquisition of APM and the divestiture of Distribution 600 800 1000 1200 1400 2016 2017 2018 2019 2020(1) 2021 2022(2) 2023 $550M $405M $915M $1,135M 8% Organic CAGR Sustainable Solutions represent 90% of the Innovation Pipeline $1,175M $790M $455M $340M HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | IndexHOME | Contents | Message from the CEO | About Us | People | Sustainability Report | 2023 38 Advancing a Circular Economy As the world continues to shift from operating in a linear economy to a circular economy, Avient is proud to be a part of the solution. Energy and Greenhouse Gas (GHG) Emissions (continued from previous page) Greenhouse Gas Emissions (MT Scope 1 &2) Intensity (MT Scope 1 & 2 GHG/MT sales) GHG Emissions � ������ .44 .28 .30 .50 .40 .30 .20 .10 .32 2019 2020 2021 2022 2023 .28 118 Resulting in 13,000 MWh Annual Savings Energy Saving Projects in E m is s (M ) E m is s In te ty (M G /M s al s) HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 54 https://sciencebasedtargets.org/ https://www.cdp.net/en Reducing Emissions Across Our Value Chain Scope 3 emissions include upstream emissions from products and services we procure from suppliers, as well as downstream emissions from the transportation of our products and the emissions generated from the use and disposal of our sold products. The following summarizes Avient’s TCFD climate-related risks and opportunities, analyzed across multiple International Energy Agency (IEA) scenarios.* POTENTIAL IMPACT ON BUSINESS POTENTIAL FINANCIAL IMPACTS POTENTIAL OPPORTUNITIES CLIMATE-RELATED IMPACTS Time Horizon Inability to remain competitive Regulatory operations curtailment Reduced production capacity Increased operating costs Reputational damage Reduced demand for products Fines/other regulatory impacts Revenue Expenditures Assets Capital costs More efficient production processes Emergence of new technologies Increased market share TR AN SI TI ON POLICY AND LEGAL Risk of regulatory change (carbon pricing) S/M/L ✓ ✓ ✓ ✓ ✓ ✓ ENERGY TECHNOLOGY Risk of energy disruption M ✓ ✓ ✓ ✓ ✓ Opportunity to reduce resource consumption S/M/L ✓ ✓ ✓ ✓ Opportunity for new technology to enable use of sustainable feedstocks M ✓ ✓ ✓ ✓ ✓ MARKET Risk of decreased availability of raw materials M ✓ ✓ ✓ ✓ ✓ Risk of product alternatives M ✓ ✓ ✓ ✓ Opportunity for products with low environmental impact S/M/L ✓ ✓ ✓ ✓ ✓ REPUTATION Risk of perceived inadequacy of climate action M/L ✓ ✓ ✓ PH YS IC AL ACUTE Risk of extreme temperatures S/M/L ✓ ✓ ✓ ✓ ✓ Risk of hurricanes/wind S/M/L ✓ ✓ ✓ ✓ ✓ Risk of flooding S/M/L ✓ ✓ ✓ ✓ ✓ CHRONIC Risk of drought S/M/L ✓ ✓ S Short: 0–5 years M Medium: 5–15 years L Long: 15–30 years HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 93 Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) Below is a reconciliation of non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with GAAP.

Robert M. Preete, Farah M. Preete Farah M.

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. WHAT WE DO: MATERIAL SCIENCE 5 CUSTOM FORMULATION M AY 3 , 2023 W EB CAS T Keeping Safety First o Relentless focus on best-in-class safety performance as an ACC Responsible Care® organization Exceeding Customer Expectations o Complementary technologies and customer relationships offer opportunity for future revenue synergies o Proven innovation-led commercial strategy with strong brands and participation across the full value chain Collaboration in Innovation o Leveraging Dyneema®, the world’s strongest fiber™, to accelerate growth of sustainable, ultralight and high performance applications People – Culture is Everything o Talented, passionate and collaborative associates drive an effective integration strategy o Strong Great Places to Work® scores reflect positive integration efforts in first year AVIENT PROTECTIVE MATERIALS INTEGRATION 7 AVIENT PROTECTIVE MATERIALS K E Y I N D U S T R I E S PERSONAL PROTECTION Military • Law Enforcement • First Responders • Body Armor • Helmets • Vehicle Protection 50% MARINE & SUSTAINABLE INFRASTRUCTURE Towing / Mooring • Aquaculture • Floating Wind • Offshore Cranes 30% CONSUMER Consumer • Outdoor High Performance • Safety Equipment 8 Figures reflect approximate proportions of 2022 sales Q 1 P ER FO RM A N CE Q1 2023 PERFORMANCE VS. National Defense budget of $842 billion submitted to Congress in Q1 2023 • European NATO members annual defense spend expected to increase by up to 20%  Dyneema® is the world’s strongest fiber™  One of the highest strength to weight ratios of any material on Earth  Direct relationships with industry leading armor manufacturers  Resistant to most chemicals, UV, and moisture to handle any environment Avient Confidential 17 DEFENSE Source: US Department of Defense, defense.gov, NATO17 Source: TRANSPORTATION • Increased EPA regulations requiring improved fuel efficiency, enabled in part by lower-weight vehicles • Automakers preparing for 2/3 of U.S. vehicles to be 100% electric by 2032  Lightweight panels that establish both strength and stiffness resulting in decreased energy usage, lower emissions  Long-lasting Color applications to resist UV exposure, temperature fluctuations and exceed the stylistic requirements of global automakers 18 $130 $530 $0.60 $2.40 2023 GUIDANCE 19 Sales Adjusted EBITDA $845 $3,400 Adjusted EPS (in millions) (in millions) CASH FLOW / LEVERAGE 20 • Maintaining free cash flow and leverage guidance from February earnings call • IT investment to further integrate acquired businesses and capture operational efficiencies • Restructuring actions to streamline operations and improve profitability, primarily in Europe ($ millions) 2023E Cash Flow from Operating Activities 350$ Less: Run-Rate CapEx (110) CapEx for IT System Upgrade (25) CapEx for Restructuring (15) Total CapEx (150) Free Cash Flow 200$ Adjusted EBITDA 530$ Net Debt / Adjusted EBITDA 2.9x LONG-TERM REVENUE GROWTH DRIVERS Growth Drivers Long-Term Growth Rate Sustainable Solutions 8–12% Healthcare 8–10% Composites 10% Asia / LATAM 5% Other (GDP growth) 2–3% Avient 6.5% 21 Sustainable Solutions 32% Asia / LATAM Composites Other (GDP Growth) 39% • Virtual presentation to be held September 20, 2023 • The company will be conducting an investor-focused presentation around our sustainability solutions portfolio Avient Confidential 22 SUSTAINABILITY INVESTOR DAY 22 $340M $405M $455M $550M $790M $915M 2016 2017 2018 2019 2020PF** 2021 2022PF*** SUSTAINABILITY FOR A BETTER TOMORROW Revenue From Sustainable Solutions* 2016-2022 ($ in millions) Organic Future Growth Revenue Assumptions From Sustainable Solutions: 8 - 12% 23 *Avient Sustainable Solutions definitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) **2020 is Pro Forma to include full year of the Clariant Color business ***2022 is Pro Forma for the acquisition of Avient Protective Materials and the divestiture of Distribution $1,175M Lightweighting Eco-Conscious Recycle Solutions VOC Reduction Sustainable Infrastructure Human Health & Safety Reduced Energy Use Bio-polymers SUSTAINABILITY NEEDS BY MARKET B&C • Eco-Conscious • Carbon footprint • Resource conservation • Carbon footprint • Bio based content • Eco-Conscious Automotive • Light weighting • Recycled Content • VOC reduction • Recycle Solutions • Carbon Footprint Packaging • Recycle Solutions • Food waste reduction Common Theme: CO2 Emission Goals Increasing Single-Use Plastic Regulation 24 INVESTING IN INNOVATION S U S T A I N A B I L I T Y P O R T F O L I O 25 AP P EN D IX 28 RAW MATERIAL 2022 ANNUAL PURCHASES Performance Additives Pigments 12% TiO2 Dyestuffs 2% Polyethylene Nylon Polypropylene Styrenic Block Copolymer Other Raw Materials 33% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials • Cost inflation decelerating, particularly for hydrocarbon-based raw materials 2022 pro forma results for the acquisition of Avient Protective Materials SEGMENT DATA U.S. & Canada 40% 37% 18% 2022 PRO FORMA SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS 24% Building and END MARKET REVENUE $2,355M $402M $1,300M $272M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $592M$3,653M (1) 9% 30 (1) Total company sales and adjusted EBITDA of $3,653M and $592M, respectively, include intercompany sales eliminations and corporate costs C O L O R , A D D I T I V E S & I N K S 2022 REVENUE | $2 .4 B ILL ION 34% 38% END MARKET REGION 31 34% 21% Building & 1% Energy 2% S P E C I A LT Y E N G I N E E R E D M AT E R I A L S 2022 PRO FORMA REVENUE | $1 .3 B ILL ION END MARKET 52% 35% REGION 32 19% 8%Industrial 9% Defense Building & 32% 27% 14% Building & 3% 1% Defense 1% (18% of sales) 9% 2022 PROFORMA AVIENT REGIONAL SALES BY END MARKET 27% 14% 17% Building & (37% of sales)Transportation 24% 12% Building & US & Canada (40% of sales) 56% 23% Building & 1% LATAM (5% of sales) 3% 33 PEER COMPARISONS AVIENT IS ASSET LIGHT Capex / Revenue 2023E (%) Avient Specialty Other Specialty / Note: Avient reflects 2023 estimated revenue of $3,400 and estimated run-rate CAPEX of $110M. 35 4 4 5 5 5 6 7 9 FREE CASH FLOW CONVERSION Note: Free cash flow conversion calculated as (Adjusted EBITDA – Capex) / Adjusted EBITDA.

AVIENT CORPORATION F I R S T Q U A R T E R 2 0 2 3 R E S U L T S (NYSE: AVNT) M AY 3 , 2 0 2 3 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. National Defense budget of $842 billion submitted to Congress in Q1 2023 • European NATO members annual defense spend expected to increase by up to 20%  Dyneema® is the world’s strongest fiber™  One of the highest strength to weight ratios of any material on Earth  Direct relationships with industry leading armor manufacturers  Resistant to most chemicals, UV, and moisture to handle any environment Avient Confidential 13 DEFENSE Source: US Department of Defense, defense.gov, NATO13 Source: TRANSPORTATION • Increased EPA regulations requiring improved fuel efficiency, enabled in part by lower-weight vehicles • Automakers preparing for 2/3 of U.S. vehicles to be 100% electric by 2032  Lightweight panels that establish both strength and stiffness resulting in decreased energy usage, lower emissions  Long-lasting Color applications to resist UV exposure, temperature fluctuations and exceed the stylistic requirements of global automakers 14 $130 $530 $0.60 $2.40 2023 GUIDANCE 15 Sales Adjusted EBITDA $845 $3,400 Adjusted EPS (in millions) (in millions) CASH FLOW / LEVERAGE 16 • Maintaining free cash flow and leverage guidance from February earnings call • IT investment to further integrate acquired businesses and capture operational efficiencies • Restructuring actions to streamline operations and improve profitability, primarily in Europe ($ millions) 2023E Cash Flow from Operating Activities 350$ Less: Run-Rate CapEx (110) CapEx for IT System Upgrade (25) CapEx for Restructuring (15) Total CapEx (150) Free Cash Flow 200$ Adjusted EBITDA 530$ Net Debt / Adjusted EBITDA 2.9x LONG-TERM REVENUE GROWTH DRIVERS Growth Drivers Long-Term Growth Rate Sustainable Solutions 8–12% Healthcare 8–10% Composites 10% Asia / LATAM 5% Other (GDP growth) 2–3% Avient 6.5% 17 Sustainable Solutions 32% Asia / LATAM Composites Other (GDP Growth) 39% • Virtual presentation to be held September 20, 2023 • The company will be conducting an investor-focused presentation around our sustainability solutions portfolio Avient Confidential 18 SUSTAINABILITY INVESTOR DAY 18 $340M $405M $455M $550M $790M $915M 2016 2017 2018 2019 2020PF** 2021 2022PF*** SUSTAINABILITY FOR A BETTER TOMORROW Revenue From Sustainable Solutions* 2016-2022 ($ in millions) Organic Future Growth Revenue Assumptions From Sustainable Solutions: 8 - 12% 19 *Avient Sustainable Solutions definitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) **2020 is Pro Forma to include full year of the Clariant Color business ***2022 is Pro Forma for the acquisition of Avient Protective Materials and the divestiture of Distribution $1,175M Lightweighting Eco-Conscious Recycle Solutions VOC Reduction Sustainable Infrastructure Human Health & Safety Reduced Energy Use Bio-polymers SUSTAINABILITY NEEDS BY MARKET B&C • Eco-Conscious • Carbon footprint • Resource conservation • Carbon footprint • Bio based content • Eco-Conscious Automotive • Light weighting • Recycled Content • VOC reduction • Recycle Solutions • Carbon Footprint Packaging • Recycle Solutions • Food waste reduction Common Theme: CO2 Emission Goals Increasing Single-Use Plastic Regulation 20 INVESTING IN INNOVATION S U S T A I N A B I L I T Y P O R T F O L I O 21 AP P EN D IX 24 RAW MATERIAL 2022 ANNUAL PURCHASES Performance Additives Pigments 12% TiO2 Dyestuffs 2% Polyethylene Nylon Polypropylene Styrenic Block Copolymer Other Raw Materials 33% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials • Cost inflation decelerating, particularly for hydrocarbon-based raw materials 2022 pro forma results for the acquisition of Avient Protective Materials SEGMENT DATA U.S. & Canada 40% 37% 18% 2022 PRO FORMA SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS 24% Building and END MARKET REVENUE $2,355M $402M $1,300M $272M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $592M$3,653M (1) 9% 26 (1) Total company sales and adjusted EBITDA of $3,653M and $592M, respectively, include intercompany sales eliminations and corporate costs C O L O R , A D D I T I V E S & I N K S 2022 REVENUE | $2 .4 B ILL ION 34% 38% END MARKET REGION 27 34% 21% Building & 1% Energy 2% S P E C I A LT Y E N G I N E E R E D M AT E R I A L S 2022 PRO FORMA REVENUE | $1 .3 B ILL ION END MARKET 52% 35% REGION 28 19% 8%Industrial 9% Defense Building & 32% 27% 14% Building & 3% 1% Defense 1% (18% of sales) 9% 2022 PROFORMA AVIENT REGIONAL SALES BY END MARKET 27% 14% 17% Building & (37% of sales)Transportation 24% 12% Building & US & Canada (40% of sales) 56% 23% Building & 1% LATAM (5% of sales) 3% 29 PEER COMPARISONS AVIENT IS ASSET LIGHT Capex / Revenue 2023E (%) Avient Specialty Other Specialty / Note: Avient reflects 2023 estimated revenue of $3,400 and estimated run-rate CAPEX of $110M. 31 4 4 5 5 5 6 7 9 FREE CASH FLOW CONVERSION Note: Free cash flow conversion calculated as (Adjusted EBITDA – Capex) / Adjusted EBITDA.