IR Deck - AVNT-2024.06.30 (Earnings) AVIENT CORPORATION S E C O N D Q U A R T E R 2 0 2 4 R E S U L T S A N D 2 0 2 4 F I N A N C I A L G U I D A N C E (NYSE: AVNT) AU G U S T 6 , 2 0 2 4 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. For the same reasons, Avient is unable to address the probable significance of the unavailable information. 2 3 Q2 2024 HIGHLIGHTS • 5% organic sales growth supported by broad-based growth across all regions in both CAI and SEM segments • Growth stemmed from gaining share, winning new product specifications and restocking in certain end markets • Cost control and operational discipline expanded EBITDA margins by 100 bps • EPS exceeded guidance by $0.05 and increased 21% vs the prior year Adj. EBITDA Margin 16.9% +100 bps Q 2 2024 R ES U LT S Q2 2024 PERFORMANCE VS.

Figure 2. Styrenic block copolymers 2. Holden, “Application of Thermoplastic Elastomers”, 573, Thermoplastic Elastomers, 2nd edition, 1996 2.

EUROPEAN CABLE MANUFACTURER S E M I - T I G H T B U F F E R F O R I N D O O R D U P L E X C A B L E S • Low shrinkage for connectorization • Easy to strip for efficient installation • Good kink resistance • Resistance to chemicals and filling compounds • Provided an alternative solution, with improved performance, compared to PA12 and PBT materials on the market • Reduced shrinkage and improved strippability for easier installation • Reduced smoke production, improving overall fire performance • Increased processing speeds, reducing overall manufacturing cost ECCOH™ 6151 Formulation KEY REQUIREMENTS WHY AVIENT?

Forward – Looking Statements Page 2 • This presentation includes the use of both GAAP (generally accepted accounting principles) and non-GAAP financial measures. Use of Non-GAAP Measures Page 3 PolyOne Commodity to Specialty Transformation Page 4 • Continue specialty transformation • Targeting $2.50 Adjusted EPS by 2015, nearly double 2013 EPS • Drive double digit operating income and adjusted EPS growth • 17 consecutive quarters of double- digit adjusted EPS growth • Shift to faster growing, high margin, less cyclical end markets • Key acquisitions propel current and future growth, as well as margin expansion • Established aggressive 2015 targets • Steve Newlin Appointed, Chairman, President and CEO • New leadership team appointed • Implementation of four pillar strategy • Focus on value based selling, investment in commercial resources and innovation to drive transformation • Volume driven, commodity producer • Heavily tied to cyclical end markets • Performance largely dependent on non- controlling joint ventures 2000-2005 2006 - 2009 2010 – 2013 2014 and beyond -150.00% -50.00% 50.00% 150.00% 250.00% 350.00% PolyOne S&P 500 Russell 2000 Dow Jones Chemical All time high of $38.38 March 7th, 2014 • 17 consecutive quarters of double digit EPS growth • 49% CAGR adjusted EPS expansion 2006-2013 • 2013 stock price increased 73% versus 30% growth in the S&P • More than seven fold increase in market cap: $0.5b $3.6b Strategy and Execution Drive Results Page 5 Appliance 4% Building & Construction 13% Wire & Cable 9% Electrical & Electronics 5% Consumer 10%Packaging 16% Industrial 12% HealthCare 11% Transportation 18% Misc. 2% United States 66% Europe 14% Canada 7% Asia 6% Latin America 7% PP&S 20% Specialty 53% Distribution 27% 0.12 0.27 0.21 0.13 0.68 0.82 1.00 1.31 2.50 $0.00 $0.25 $0.50 $0.75 $1.00 $1.25 $1.50 $1.75 $2.00 $2.25 $2.50 2006 2007 2008 2009 2010 2011 2012 2013 2015 Target Ad ju st ed E ar ni ng s P er S ha re 2013 Revenues: $3.8 Billion End Markets 2013 Revenues: $3.8 Billion EPS Page 6 PolyOne At A Glance Old PolyOne Transformation *Operating Income excludes corporate charges and special items 2% 34% 43% 62% 65- 75% 0% 20% 40% 60% 80% 100% 2005 2008 2010 2013 2015 % o f O pe ra tin g In co m e* JV's Performance Products & Solutions Distribution Specialty Specialty OI $5M $46M $87M $195M Target Mix Shift Highlights Specialty Transformation 2015 Target Page 7 2006 2013 2015 “Where we were” “Where we are” Target 1) Operating Income % Specialty: Global Color, Additives & Inks 1.7% 12.2% 12 – 16% Global Specialty Engineered Materials 1.1% 9.3% 12 – 16% Designed Structures & Solutions -- 5.6% 8 – 10% Performance Products & Solutions 5.4% 7.2% 9 – 12% Distribution 2.6% 5.9% 6 – 7.5% 2) Specialty Platform % of Operating Income 6.0% 62% 65 – 75% 3) ROIC* (after-tax) 5.0% 9.1% 15% 4) Adjusted EPS Growth N/A 31% Double Digit Expansion Proof of Performance & 2015 Goals *ROIC is defined as TTM adjusted OI divided by the sum of average debt and equity over a 5 quarter period Page 8 Bridge To $2.50 Adjusted EPS By 2015 2015 EPS: $2.50 2013 EPS: $1.31 Mid single digit revenue CAGR Page 9 Mergers & Acquisitions Spartech accretion Incremental share buybacks Ongoing LSS Programs (50-100 bps/yr) Accelerated Innovation & Mix Improvement Innovation Drives Earnings Growth $20.3 $52.3 2006 2013 Research & Development Spending ($ millions) Specialty Platform Vitality Index Progression* *Percentage of Specialty Platform revenue from products introduced in last five years Page 10 14.3% 30.7% 2006 2013 Specialty Platform Gross Margin % 19.5% 43.0% 2006 2013 Healthcare Consumer Packaging and Additive Technology Transportation Page 11 Unique and Innovative Solutions that Help Customers Win https://www.dropbox.com/sh/dwe4t8aacvhb8ui/uD3p_bdglP/Presentation revise pics/GLS Beverage can closure XO 2.jpg https://www.dropbox.com/sh/dwe4t8aacvhb8ui/-YgkycKypw/Anti-Counterfeiting release & images/GN1979.JPG Net Debt / EBITDA* = 1.8x $48 $317 $600 $0 $100 $200 $300 $400 $500 $600 $700 $800 2015 2020 2023 Significant Debt Maturities As of December 31, 2013 ($ millions) Page 12 Coupon Rates: 7.500% 7.375% 5.250% Debt Maturities & Pension Funding – 12/31/13 *TTM 12/31/2013 ** includes US-qualified plans only 60% 100% 20% 30% 40% 50% 60% 70% 80% 90% 100% 2008 2013 Pension Funding** As of December 31, 2013 Free Cash Flow and Strong Balance Sheet Fund Investment •Targets that expand our: • Specialty offerings •End market presence •Geographic footprint •Operating Margin • Synergy opportunities •Adjacent material solutions •Expanding our sales, marketing, and technical capabilities • Investing in operational and LSS initiatives (including synergy capture) •Manufacturing alignment Organic Growth Share Repurchases Dividends Acquisitions Page 13 $0.16 $0.20 $0.24 $0.32 $0.00 $0.10 $0.20 $0.30 $0.40 2011 2012 2013 2014 Annual Dividend • Repurchased ~5 million shares in 2013 • 15 million shares are available for repurchase under the current authorization The New PolyOne: A Specialty Growth Company 2015 Target: $2.50 Adjusted EPS Why Invest In PolyOne? Platform operating income mix percentage 2005Y* 2006* 2008Y* 2010Y* 2013Y Global Specialty Engineered Materials $ 0.4 $ 3.9 $ 17.6 $ 49.7 $ 57.2 Global Color, Additives and Inks 4.3 8.9 28.1 37.7 104.0 Designed Structures and Solutions - - - - 33.4 Specialty Platform $ 4.7 $ 12.8 $ 45.7 $ 87.4 $ 194.6 Performance Products and Solutions 75.7 64.2 31.3 54.0 56.0 Distribution 19.5 19.2 28.1 42.0 63.3 SunBelt Joint venture 91.9 102.9 28.6 18.9 - Corporate (51.5) 34.5 (425.1) (27.7) (82.4) Operating income (loss) GAAP $ 140.3 $ 233.6 $ (291.4) $ 174.6 $ 231.5 Less: Corporate operating expense 51.5 (34.5) 425.1 27.7 82.4 Operating income excluding Corporate $ 191.8 $ 199.1 $ 133.7 $ 202.3 $ 313.9 Specialty platform operating mix percentage 2% 6% 34% 43% 62% * Historical results include the Resin and Specialty Coatings businesses within the Performance Products and Solutions segment.

ACTIVIDADES NACIONALES REGISTRADAS Y FECHA DE ALTA Actividad principal: 202908 (F-883) FABRICACIÓN DE PRODUCTOS QUÍMICOS N.C.P. Mes de inicio: 10/2015 Secundaria(s): 469090 (F-883) VENTA AL POR MAYOR DE MERCANCÍAS N.C.P. Mes de inicio: 10/2015 681098 (F-883) SERVICIOS INMOBILIARIOS REALIZADOS POR CUENTA PROPIA, CON BIENES URBANOS PROPIOS O ARRENDADOS N.C.P.

Coffee Capsules case study DESIGN FOR COMPOSTING C O F F E E C A P S U L E S • Compliance with European Standard EN 13432 • Biodegradable and compostable solutions approved by certified body (TÜV Austria) • Color customization for various kind of biopolymers • Formulation expertise and regulatory assistance OnColor™ Bio-Colorants KEY REQUIREMENTS WHY AVIENT?

technology HINGE MANUFACTURER S P E C I A L T Y F U R N I T U R E F I T T I N G • High dimensional stability • Low slip effect • No squeaking noises • Very low wear properties • High process stability • Provided high quality solutions for mass production with high processing performance • Met customer’s tribological requirements over the entire product life cycle of more than 20 years • Customized tailor-made solutions for specific applications that are constantly being adapted to new requirements LubriOne™ Internally Lubricated Formulations KEY REQUIREMENTS WHY AVIENT?

LEARN MORE INDUSTRIAL HOUSING OEM U T I L I T Y B O X S T I F F E N E R • Meet material stiffness requirement of 12,000 MPa flex modulus • Stable raw material supply • Formulated a solution that meets economic and mechanical property requirements • Quickly sampled and qualified the new material at multiple facilities • Enabled manufacturing at scale by using packaging that minimized moisture uptake during transit and storage • Provided a stable supply of post-industrial recycled (PIR) PA66 to offset prime PA66 Nymax™ REC Glass-Filled Formulation KEY REQUIREMENTS WHY AVIENT?

SMALL APPLIANCE OEM C O F F E E M A C H I N E S E A L • Soft durometers • Good bonding to ABS • Good flowability for easy processing • Excellent sealing property • Formulated a 30 Shore A TPE with excellent peel force performance to meet the sealing requirements • Offered a short lead time and on-site technical service to speed up the time to market • Provided fast global collaboration between regions, supporting the brand’s design team in Europe and molders in Asia Custom VersaflexTM Formulation KEY REQUIREMENTS WHY AVIENT?

MONOFILAMENT MANUFACTURER P V D F F I L A M E N T E X T R U S I O N • Reduce or eradicate die build-up • Improve predictive and final part quality • Optimize PVDF extrusion for the desired coefficient of friction (CoF) • Reduce energy consumption • Boosted overall production efficiency by minimizing die build-up through use of a PVDF-specific processing aid • Achieved a flawless surface by reducing friction and improving flow for enhanced final part quality • Controlled extrusion pressure to reduce energy required in processing Colorant Chromatics PVDF Processing Aid KEY REQUIREMENTS WHY AVIENT?