To access Avient’s news library online, please visit www.avient.com/news. https://www.avient.com/investors/ https://edge.media-server.com/mmc/p/ky9b3iov https://www.avient.com/investors/ https://register.vevent.com/register/BIa7fc29ba31db4eec88eca2de2a3faa90 https://www.avient.com/investors/events-presentations https://www.avient.com/news-events 4 About Avient 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. For more information, visit https://www.avient.com. https://www.avient.com/ 5 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. Rose Vice President, Marketing and Communications Avient Corporation +1 440-930-3162 kyle.rose@avient.com mailto:giuseppe.disalvo@avient.com mailto:kyle.rose@avient.com 7 Attachment 1 Avient Corporation Summary of Condensed Consolidated Statements of Income (Unaudited) (In millions, except per share data) Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Sales $ 753.7 $ 823.3 $ 2,423.8 $ 2,606.5 Operating Income 34.3 40.6 153.7 242.9 Net income (loss) from continuing operations attributable to Avient shareholders 5.1 (27.4) 48.0 99.8 Basic earnings per share from continuing operations attributable to Avient shareholders $ 0.06 $ (0.30) $ 0.53 $ 1.09 Diluted earnings per share from continuing operations attributable to Avient shareholders $ 0.06 $ (0.30) $ 0.52 $ 1.08 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.

A recording of the webcast and the slide presentation will be available at avient.com/investors/events-presentations immediately following the conference call and will be accessible for one year. 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. For more information, visit https://www.avient.com. https://www.avient.com/news-events https://www.avient.com/ 4 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. Rose Vice President, Marketing and Communications Avient Corporation +1 440-930-3162 kyle.rose@avient.com mailto:giuseppe.disalvo@avient.com mailto:kyle.rose@avient.com 6 Attachment 1 Avient Corporation Summary of Condensed Consolidated Statements of Income (Unaudited) (In millions, except per share data) Three Months Ended March 31, 2024 2023 Sales $ 829.0 $ 845.7 Operating income 94.0 57.1 Net income from continuing operations attributable to Avient shareholders 49.4 20.8 Diluted earnings per share from continuing operations attributable to Avient shareholders $ 0.54 $ 0.23 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.

This business applies materials science expertise to commercialize products and solutions for a variety of market segments, including automotive, automotive electrification, semiconductors, LCD and OLED displays, consumer electronics, data centers, 5G networks, and transportation safety and generated approximately For more information, visit https://www.avient.com.

Body Weight Active LDR (ppm) —— Body Weight —— Max Load Bo dy W ei gh t ( g) M ax L oa d (lb s) Active LDR (ppm) —— Energy Consumption —— Energy Reduction En er gy C on su m pt io n (k W ) En er gy R ed uc tio n 0 10 25 0 17 34 51 30% 1.844.4AVIENT www.avient.com Copyright © 2025, Avient Corporation.

As suppliers of these materials continue to develop innovations in chemistry and capabilities, the appeal of both TPEs and LSR will grow even stronger. When looking to incorporate sustainable content into your TPE, the raw material cost may be more expensive than traditional materials for three reasons 1) supply chain maturity, 2) high demand, low supply, 3) location of source and supplier. PCF COMPARISON https://www.carbon-minds.com/lca-database-for-chemicals-and-plastics/ https://www.silicones.eu/wp-content/uploads/2019/05/SIL_exec-summary_en.pdf https://www.avient.com/idea/making-plastic-parts-more-sustainable 1http://www.ptonline.com/articles/getting-into-lsr--part-iv-how-lsr-tooling-is-different Tooling Costs PRODUCTION CONSIDERATIONS In nearly every case, molds needed for LSR fabrication require more precision and tooling expertise than those used to manufacture TPE parts.

 Addressable market exceeds $40 billion  Strong performance demonstrates that our strategy and execution are working  Megatrends and emerging opportunities align with our strengths  Innovation and services provide differentiation, incremental pricing power, and competitive advantage  Strong and proven management team driving growth and performance PolyOne Corporation Page 22 Appendix PolyOne Corporation Page 23 $0.24 $0.31 $0.44 $0.46 $0.56 $0.00 $0.25 $0.50 $0.75 1Q'12 1Q'13 1Q'14 1Q'15 1Q'16 Adjusted EPS 1Q 2016 Financial Highlights  Performance Products & Solutions operating margin grew 540 basis points year-over-year to 11.9%  Distribution operating margin expanded 60 basis points to a record first quarter level of 6.5%  First quarter adjusted EPS has grown on average 24% per year since 2012 $11 $20 $0 $5 $10 $15 $20 $25 1Q'15 1Q'16 PP&S Operating Profit $16 $18 $10 $12 $14 $16 $18 $20 1Q'15 1Q'16 POD Operating Profit Note: $ in millions, except per share data PolyOne Corporation Page 24 1.7% 4.6% 5.1% 5.5% 7.2% 8.1% 9.7% 12.2% 16.7% 17.0% 20%+ 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 1Q'16 2020 Operating Income % of Sales At a Glance Color, Additives and Inks 2015 Revenues: $0.8 Billion Solutions Expanding Profits2015 Revenue by Industry Segment 14.7% Platinum Vision United States 48% Europe 33% Canada 2% Asia 12% Latin America 5% Appliances 2% Building & Construction 11% Consumer 8% Electrical & Electronics 1% Healthcare 6% Industrial 13% Packaging 31% Textiles 8% Transportation 9% Wire & Cable 11% PolyOne Corporation Page 25 1.1% 1.3% 3.4% 5.1% 9.6% 8.0% 8.6% 9.3% 14.7% 16.6% 20%+ 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 1Q'16 2020 Operating Income % of Sales At a Glance Specialty Engineered Materials 2015 Revenues: $0.5 Billion Solutions 2015 Revenue by Industry Segment Expanding Profits Platinum Vision 12.1% United States 49% Europe 29% Canada 2% Asia 20% Appliances 3% Building & Construction 3% Consumer 20% Electrical & Electronics 16% Healthcare 11% Industrial 8% Packaging 5% Transportation 19% Wire & Cable 15% PolyOne Corporation Page 26 1.4% 5.6% 7.3% 3.0% 8-10% 0.4% 2012 2013 2014 2015 1Q'16 2020 Operating Income % of Sales At a Glance Designed Structures and Solutions Solutions2015 Revenues: $0.5 Billion Expanding Profits2015 Revenue by Industry Segment Platinum Vision Appliances, 3% Building & Construction 9% Consumer 5% Healthcare 7% Industrial 24% Packaging 19% Transportation 33% United States 97% Canada 3% PolyOne Corporation Page 27 Appliances 7% Building & Construction 31% Consumer 5% Electrical & Electronics 3% Healthcare 1% Industrial 13% Packaging 5% Transportation 19% Wire & Cable 16% 5.5% 6.9% 3.8% 3.6% 5.5% 4.3% 6.3% 7.2% 8.3% 12-14% 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 1Q'16 2020 Operating Income % of Sales At a Glance Performance Products and Solutions Solutions Expanding Profits 2015 Revenues: $0.7 Billion 11.9% Platinum Vision 2015 Revenue by Industry Segment 7.7% United States 79% Canada 14% Asia 2% Latin America 5% PolyOne Corporation Page 28 2.6% 3.0% 3.5% 4.0% 4.6% 5.6% 6.4% 5.9% 6.6% 6.5-7.5% 6.5% 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 1Q'16 2020 Operating Income % of Sales 15% 54% 2006 1Q 2016 At a Glance Distribution Key Suppliers2015 Revenues: $1.0 Billion ROIC Expanding Profits 6.1% Platinum Vision Appliances 6% Building & Construction 4%Consumer 13% Electrical & Electronics 6% Healthcare 23% Industrial 16% Packaging 4% Transportation 24% Wire & Cable 4% http://www.polyone.com/Pages/VariationRoot.aspx http://www.polyone.com/Pages/VariationRoot.aspx PolyOne Corporation Page 29 2 lbs Plastic = 3 lbs aluminum or 8 lbs steel or 27 lbs glass 33% less material by weight than aluminum 75% less material by weight than steel 93% less material by weight than glass Requires 91% less energy to recycle a pound of plastic versus a pound of paper Source: SPI: Sustainability and the Plastics Industry Plastics: Key to Future Sustainable Development PolyOne Corporation Page 30 Application Examples PolyOne Corporation Page 31 Outdoor Applications • Leading provider of high performance specialty materials for the recreational and sports & leisure industry • Well positioned across all segments to address market needs  Metal to Polymer Conversion  Lightweighting  Thermal Management  Impact Performance Source: Outdoor Industry Association PolyOne Corporation Page 32  $1.5 billion attractive, growing market  Additives improve performance and reduce cost through light-weighting, reduced waste, faster cycle times, and extended shelf life of finished product  Aligned with megatrend of protecting the environment:  Sustainability benefits include lower package weight and improved recyclability of package at end of use Market Opportunity Leading Global Supplier of Additives In Growing PET Market Shelf-life extension Greater product consistency Recyclability and reduced carbon footprint Color and Special Effects Weight reduction Enhanced product aesthetics High heat resistance PET Bottling Technology 0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 2009 2014 2019 Asia Pacific North America Latin America Western Europe Eastern Europe Middle East and Africa Global PET Packaging Growth 2009-2019 Source: Euromonitor retail off-trade consumption (PET bottles & jars, home care, personal care, food & non-alcoholic beverages) B ill io n un its 5% CAGR PolyOne Corporation Page 33 • Includes formulation and consultative services to assist manufacturers and brand owners in positively identifying their finished goods • Protects brand equity & consumer welfare • Reduces exposure to unwarranted recall expenses • Secures supply chain integrity – support for safe expansion into new geographies Authentication Technology PolyOne Corporation Page 34 Metal Replacement Solutions • Replaces metal in LED lighting • Extends LED durability and life span eliminating hot spots • Greater design flexibility with fewer parts • Weight reduction • Simplifies manufacturing and lowers total production cost PolyOne Corporation Page 35 • Color harmonization across 15 unique color-and-polymer combinations • Eliminated need for multiple pre- colored materials • Reduced Land Rover’s working capital Range Rover Evoque Interior PolyOne Corporation Page 36 • Reduced health and environmental impact • System cost reduction • Radiation-shielding performance • Parts consolidation • Design freedom CT Scanner PolyOne Corporation Page 37 High-Barrier Packaging Containers • Capability to extrude up to 13 layers • Strong oxygen and moisture vapor transmission protection • Can be made symmetrical or asymmetrical to meet customized needs of broad variety of applications • Barrier protection and superior sensory properties PolyOne Corporation Page 38 Aerospace Applications • Leading provider of specialty materials for the aerospace industry • Typical applications  Mil-spec aircraft windows, canopies, windscreens, instrument panels, wingtip lenses  Interior – gallery furnishings, tray tables, arm rests, trim strips, joint/edge coverings • Benefits:  High impact strength  Resistant to UV rays  Flame and smoke compliance  Easy to clean with aggressive cleaners; anti-microbial grades available  Range of sizes, thicknesses, colors, etc. 1 Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except per share data) Below is a reconciliation of non-GAAP financial measures to the most directly comparable measures calculated and presented in accordance with U.S.

VERHALTENSKODEX | 5 INHALTSANGABE EINLEITUNG UNSER VERHALTENSKODEX RESPEKT FÜR ALLE EHRLICHKEIT BEI DER ARBEIT INTEGRITÄT IN UNSEREM GESCHÄFT SOZIALE VERANTWORTUNG DES UNTERNEHMENS RESSOURCEN https://secure.ethicspoint.com/domain/media/en/gui/49178/index.html mailto:Ethics.Officer%40Avient.com? subject= https://secure.ethicspoint.com/domain/media/en/gui/49178/index.html http://Avient.com https://secure.ethicspoint.com/domain/media/en/gui/49178/index.html Keine Vergeltungmaßnahmen Avient duldet keinerlei Vergeltungsmaßnahmen gegen Personen, die in guter Absicht Rat suchen, Bedenken vortragen, Fehlverhalten melden oder Auskünfte in Bezug auf Untersuchungen erteilen, die aufgrund des Verdachts eines Verstoßes gegen den Verhaltenskodex vorgenommen werden. VERHALTENSKODEX | 6 INHALTSANGABE EINLEITUNG UNSER VERHALTENSKODEX RESPEKT FÜR ALLE EHRLICHKEIT BEI DER ARBEIT INTEGRITÄT IN UNSEREM GESCHÄFT SOZIALE VERANTWORTUNG DES UNTERNEHMENS RESSOURCEN https://secure.ethicspoint.com/domain/media/en/gui/49178/index.html Respekt für alle Wir haben gemeinsam eine Verantwortung für die Schaffung und Aufrechterhaltung einer angenehmen, nicht bedrohlichen und produktiven Arbeitsumgebung – ein Arbeitsplatz, an dem alle Menschen fair und respektvoll behandelt werden.

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Webcast Details The webcast can be viewed live at avient.com/investors, or by clicking here: https://edge.media- server.com/mmc/p/k7okojz2. To access, dial 1-855-859-2056 (domestic) or 1-404-537-3406 (international) and provide conference ID number 2171339. http://www.avient.com/investors https://edge.media-server.com/mmc/p/k7okojz2 https://edge.media-server.com/mmc/p/k7okojz2 http://www.avient.com/investors 4 About Avient Avient Corporation (NYSE: AVNT), with 2021 revenues of $4.8 billion, provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. For more information, visit www.avient.com. # # # https://www.avient.com/ 5 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.

Webcast Details The webcast can be viewed live at avient.com/investors, or by clicking here: https://edge.media- server.com/mmc/p/yrq7mgm9.To participate in the audio-only portion of the call, dial 1-844-835- 7433 (domestic) or 1-914-495-8589 (international) and provide conference ID number 7899765. To access, dial 1-855-859-2056 (domestic) or 1-404-537-3406 (international) and provide conference ID number 7899765. http://www.avient.com/investors https://edge.media-server.com/mmc/p/yrq7mgm9 https://edge.media-server.com/mmc/p/yrq7mgm9 http://www.avient.com/investors 3 Full Year Comparisons Pro Forma for Acquisition of Clariant’s Color Business The company acquired Clariant’s color (“Clariant Color”) business on July 1, 2020 (the “Acquisition Date”). For more information, visit www.avient.com. # # # http://www.avient.com/ 4 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.