A reconciliation of each historical non-GAAP financial measure with the most directly comparable GAAP financial measure is attached to this presentation which is posted on our website at www.avient.com. Copyright © . 2024 23 Diverse technology portfolio Commercial excellence, financial rigor & prudence Culture of safety and sustainability FOUNDATIONAL STRENGTHS Unwavering customer focus Global reach with a local touch Innovation Digital for Operational Excellence and Growth Leadership, talent STRATEGIC DRIVERS OUR PURPOSE Innovator of materials solutions to help our customers succeed, while enabling a sustainable world STRATEGIC APPROACH Intersecting high growth markets and secular trends with our technologies to create product platforms of scale Catalyze the core Build new platforms of scale GROWING AT GDP+ GROWING AT 10% PLUS CAGR Copyright © . 2024 24 Redesigning organizations & compensation to drive strategy Compensation • Designed a new compensation plan directly to our strategy execution Colors, and Inks Specialty R&D Research and Development New business development & marketing excellence • New SVP hired • Reorganized under a single global leadership eliminated structure and complexity “play to win” focused organizations for growth vectors up front • New CTO hired Copyright © . 2024 25 Strong and committed team leading the change Leslie Sequeira Chief Information Officer SVP and Chief Financial Officer Joel Rathbun SVP Mergers & Acquisitions SVP and President Color, Additives and Inks SVP and President Specialty Engineered Amy Sanders SVP, General Counsel and Secretary Kyle Rose VP, Corporate Communications John Midea SVP, Global Ops and Process Improvement Kristen Gajewski SVP and Chief Human Resources Officer ALSO HERE TODAY Phil Clark SVP and Chief Technology Officer ALSO HERE TODAY Mike Irwin SVP, New Business Development and Marketing Excellence Color, Additives and Inks SEGMENT STRATEGIC REVIEW Copyright © . 2024 28 Solutions provider of customized color and functionality to enhance and improve polymers Color, Additives and Inks – an overview 34% 37%21% 8% US, Canada Europe, Middle East, Africa Latin America $2.0B • Differentiate and enhanced aesthetic appeal of our customers’ products • Enable sustainability through our solutions • Safeguard and preserve packaged contents • Extend product shelf life KEY E N D MARKETS PACKAGING CONSUMER HEALTHCARE BUILDING & CONSTRUCTION INDUSTRIAL TRANSPORTATION Copyright © . 2024 29 Our value we know color color designs completed annually 400,000 color formulations manufacturing footprint in industry 550 commercial resources globally serving locally we are global we innovate 18,000 sustainable solutions broadest portfolio in industry 14,500 additives solutions and growing Copyright © . 2024 30 Portfolio of CAI solutions Solid Colorants Liquid Recycling solutions Barrier enhancements Surface modifiers Plastisol Water-based Bio-based Silicone dispersion Vinyl formulations Specialty coatings Advanced dispersionsScreen printing inks Copyright © . 2024 31 CAI sales growth faster response to customer needs tailored to local needs...globally enhance service with digital tools Copyright © . 2024 32 Personalized, self-administered 32 CAI PORTFOLIO Copyright © . 2024 33 • Regulatory compliance • Reliable material quality and uninterrupted supply • Supply chain risk mitigation • Global reach $6B ADDRESSABLE MARKET AVIENT VALUE PROPOSITION • ISO 13485 accredited sites • Globally approved raw material portfolio • Strict change management • Global supply Auto injectors Syringes Inhalers OTHER APPLICATONS • In-vitro diagnostics • Remote monitoring • Pharma packaging • Catheters • Medical equipment Copyright © . 2024 34 • Reducing material and energy usage • Achieving sustainability goals and objectives • Improved product performance, structural integrity $5B ADDRESSABLE MARKET AVIENT VALUE PROPOSITION • Best-in-class additives for a wide range of polymer processing temperatures • Design services to simulate foaming and mold designs TransportationWood plastic composite decking Bottles and food packaging Building and Copyright © . 2024 35 • Regulatory restrictions with the removal of PFAS in multiple end markets • Major retailers requiring PFAS content declaration from suppliers • Enhanced plastic properties, aesthetics and processability • Specialized functionalities making plastics a safe option in demanding applications $8B ADDRESSABLE MARKET OTHER APPLICATONS • Electrical connectors • Labware • Food contact appliances Flexible film Artificial turf Food storage, oil containers 36Copyright © . Moving up the value chain, and expanding addressable market size by providing materials solutions in select and prioritized areas MARKETS TECHNOLOGY CUSTOMER SCALE +100 to +200 bps revenue growth above GDP Copyright © . 2024 59 Pathway to 20%+ adjusted EBITDA margins • Organic volume growth and SG&A efficiencies from prioritizing resources across the company • Increased sales in higher margin growth platforms Productivity • Manufacturing & sourcing efficiencies • Footprint optimization • Digital technologies Avient margin expansion +400bps margin expansion 20%+ Strategic objective ~16% Current adjusted EBITDA margin +2% +1% +1% Copyright © . 2024 60 Organic revenue growth with margin expansion +100 to +200bps above GDP Organic revenue growth LONG TERM FINANCIAL TARGETS Copyright © . 2024 61 History of balanced capital deployment .1 6 .2 0 $0 .2 6 $0 .3 4 $0 .4 .5 0 $0 .5 8 .7 .7 9 .8 .8 8 $0 .9 6 0 8 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 Dividend $ per shareAdj.

Peel, PLI 12 19 23 20 19 reSound OM 5510 for PP reSound OM 5510-60N Room Temperature 70C Bio-derived Content (%) 50% 50% 50% 50% 50% 50% 50% Hardness, Shore A 60 60 60 60 60 60 60 Specific Gravity 0.89 0.89 0.89 0.89 0.89 0.89 0.90 50% Modulus, PSI 247 241 244 251 234 244 240 100% Modulus, PSI 343 333 338 339 321 331 326 Tensile Strength, PSI 625 621 647 610 633 662 642 Elongation, % 306 314 309 313 312 315 315 Tear Strength, PLI 109 108 113 113 111 117 115 reSound OM 5520-55N Room Temperature 70C Bio-derived Content (%) 49% 49% 49% 49% 49% 49% 49% Hardness, Shore A 54 54 55 55 54 55 56 Specific Gravity 0.95 0.95 0.96 0.96 0.95 0.96 0.96 50% Modulus, PSI 258 256 256 265 266 271 257 100% Modulus, PSI 353 355 357 362 373 379 367 Tensile strength, PSI 637 615 637 669 651 674 642 Elongation, % 319 315 319 333 313 319 315 Tear Strength, PLI 146 136 133 142 137 138 141 reSound OM 5510-45N Room Temperature 70C Bio-derived Content (%) 40% 40% 40% 40% 40% 40% 40% Hardness, Shore A 45 46 47 46 46 45 45 Specific Gravity 0.88 0.89 0.89 0.89 0.89 0.89 0.90 50% Modulus, PSI 153 158 154 162 137 136 133 100% Modulus, PSI 251 259 259 261 226 222 218 Tensile Strength, PSI 438 481 451 495 417 470 486 Elongation, % 215 240 211 243 204 227 238 Tear Strength, PLI 84 81 87 82 83 85 84 AGING – PROPERTY RETENTION • Tested at room temperature and 70° C for comparison • Hardness, tensile strength elongation and modulus showed great retention Overmolding onto PP Overmolding onto ABS RHEOLOGY Suitable for injection molding and overmolding 1.0 10 100 1000 10000 100000 10.0 100.0 1000.0 reSound OM 5510-30N reSound OM 5510-45N reSound OM 5510-60N reSound OM 5510-70N Shear Rate, 1/s Ca pi lla ry V is co si ty , P a* s 1.0 10 100 1000 10000 100000 10.0 100.0 1000.0 reSound OM 5520-55N Shear Rate, 1/s Ca pi lla ry V is co si ty , P a* s Capillary viscosity at 200°C Capillary viscosity at 200°C reSound OM 5510 for PP reSound OM 5520 for ABS www.avient.com Copyright © 2020, Avient Corporation.

Biodegradable & compostable BIO FILM BAG MANUFACTURER F L E X I B L E P L A F I L M • Easy film unwinding without optical impairments or mechanical damage • Excellent clarity and transparency in BOPLA applications • Compliant with food contact applications* • Provided a solution to minimize film-to-film surface contact, decreasing the coefficient of friction between layers lying on top of each other • Created a customized formulation by mixing anti- blocking additives and slip agents, maintaining process speed without impacting performance or film quality • Improved handling of the PLA shopping bags, making them easier to open CESA™ & OnCap™ BIO ABSL additives KEY REQUIREMENTS WHY AVIENT? AVIENT SOLUTION LEARN MORE * Contact Avient for conditions of use and limitations SPEED + PERFORMANCE Copyright © 2022, Avient Corporation. https://www.avient.com/products/polymer-additives/performance-enhancement-additives/oncap-bio

Please contact Avient for additional information www.avient.com Copyright © 2020, Avient Corporation. www.avient.com Copyright © 2020, Avient Corporation. To learn more, visit www.avient.com or call +1.844.4AVIENT (1.844.428.4368).

https://www.avient.com/investors https://edge.media-server.com/mmc/p/izyekkyu https://www.avient.com/investors https://register.vevent.com/register/BI3c8fe685f32648e0abfb1ac2c77a59d9 https://www.avient.com/investors/events-presentations 3 Non-GAAP Financial Measures The Company uses both GAAP (generally accepted accounting principles) and non-GAAP financial measures. To access Avient’s news library online, please visit www.avient.com/news-events. For more information, visit https://www.avient.com.

For more information, visit www.avient.com/. http://www.avient.com/investors https://edge.media-server.com/mmc/p/edkwvu9r https://edge.media-server.com/mmc/p/edkwvu9r http://www.avient.com/investors https://www.avient.com/ 3 Forward-looking Statements In this press release, 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. # # Investor Relations Contact: Giuseppe (Joe) Di Salvo Vice President, Treasurer and Investor Relations Avient Corporation +1 440-930-1921 giuseppe.disalvo@avient.com Media Contact: Kyle G.

Visit www.avient.com to learn more.   Media Contact Nicole DeChant Avient Corporation nicole.dechant@avient.com Media Relations Contacts

Visit www.avient.com to learn more.   Media Contact Crandall Turner Avient Corporation crandall.turner@avient.com  Media Relations Contacts

Visit www.avient.com to learn more.   Media Contact Crandall Turner Avient Corporation crandall.turner@avient.com   Media Relations Contacts

Visit www.avient.com to learn more.   Media Contact Nicole DeChant Avient Corporation nicole.dechant@avient.com Media Relations Contacts