C O N T I N U O U S G LU C O S E M O N I TO R I N G O E M C G M S Y S T E M M O N I T O R • Provide color options that work within a limited existing pigment set • Offer regulatory support in achieving approval for new color formulations • Shorten development time to gain faster approvals and realize lower costs • Offered color options that met desired aesthetics and moods utilizing the approved pigment set while creating a distinct color difference from an existing device • Provided support in achieving regulatory approvals, resulting in significant cost and time savings • Compressed the timeline through on-site color visualization, exploration, and formulation of new colors ColorWorks™ Design Center, Phoenix, AZ KEY REQUIREMENTS WHY AVIENT?

L E A D I N G C O N S U M E R G O O D S C O M PA N Y B O D Y W A S H C A P S • Lend guidance in using color trending intelligence to customize 20+ colors for product line rebranding • Provide fast turnaround on new designs to improve speed to market • Navigate development efforts with external design firms and label manufacturers to ensure visual consistency and brand identity • Receive technical support before and during processing • Delivered over 20 approved custom colors utilizing market and trend expertise • Employed both virtual and onsite co-collaboration sessions for quick turnaround on crucial color decisions • Worked with all necessary parties, including design firms, manufacturers, and internal engineering team to protect brand integrity • Provided technical support and expertise to converter ColorWorks™ Design & Technology Centers – West Chicago KEY REQUIREMENTS WHY AVIENT?

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 A Y 4 , 2 0 2 3 H O S T E D B Y : 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 : M AT E R I A L S C I E N C E 5 CUSTOM FORMULATION M AY 3 , 2 0 2 3 W E B C A S 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 AVI E N T P ROT EC T I VE MAT ER I A L S I N T EG R ATI O N 7 AVI ENT PROTEC TI VE MATERI ALS 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 20% 8 Figures reflect approximate proportions of 2022 sales Q 1 P E R F O R M A N C E Q1 2023 PERFORMANCE VS. Avient Specialty Formulators Other Specialty / Chemical Companies 2023E(%) 36 79 87 83 81 76 73 90 79 77 76 73 69 60 22 A vi e n t K W R P P G F U L A V Y R P M F M C C E H X L A S H E C L H U N E M N S C L M U LT I P L E E X PA N S I O N Avient Specialty Formulators Other Specialty / Chemical Companies Source: Peer data per Bloomberg as of April 28, 2023 Note: Avient reflects 2023 adjusted EBITDA guidance of $530M and closing share price of $38.51.

S e e S p e c if ic I n s tr u c ti o n s o n p a g e 3 . 1 Name (as shown on your income tax return). Enter the tax classification (C=C corporation, S=S corporation, P=Partnership) Note: Check the appropriate box in the line above for the tax classification of the single-member owner. The FATCA code(s) entered on this form (if any) indicating that I am exempt from FATCA reporting is correct.

Low Warp Orange 1 6T Dark Orange ORANGE 016

MB10345PC ORANGE FB421 Orange ORANGE 30250

Microsoft PowerPoint - AVNT M8 Investor Presentation AVIENT CORPORATION I N V E S T O R P R E S E N T A T I O N (NYSE: AVNT) A U G U S T 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 AVIENT OVERVIEW 2023 Financial ResultsCompany Overview Revenue By: 9,300 Employees 102 Manufacturing Sites 20,000+ Customers  Innovating materials and processing solutions to solve our customers’ challenges while enabling a sustainable world  Broad portfolio of technologies with market leading positions and flexibility to anticipate and meet customer needs  Focus is on organic revenue growth and margin expansion, following our successful portfolio transformation $3.14B Revenue $2.36 Adjusted EPS $502M Adjusted EBITDA 16.0% Adjusted EBITDA Margins $186M Adjusted Free Cash Flow U.S. & Canada EMEA Asia Latin America 64% 36% Specialty Engineered Materials Color Additives and Inks 41% 36% 18% 5% 7% 7% 23% 19% 9% 16% 10% 5% 4% Defense Healthcare Packaging Consumer Building & Construction Industrial Transportation Energy Telecom Geography Segment Industry 2024 Financial Guidance $515 to $540 million Adjusted EBITDA $2.55 to $2.70 Adjusted EPS 4 Industry Sustainability Standards ESG Ratings Performance 1 2 4 87th 94th percentile Avient CDP Score: A- SUSTAINABILITY PERFORMANCE AND RECOGNITION A U G U S T 6 , 2 0 2 4 W E B C A S T P R E S E N TA T I O N 6 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 2 0 2 4 R E S U L T S Q2 2024 PERFORMANCE VS.

Hanna consolidate • Cultures clash – commodity wins • Dependent on income derived from commodity joint ventures The First 6 Years • Globally organized along three strategic platforms • Non-core equity investment dispositions • Talent upgrades, discipline instilled throughout organization • New CEO hired to transform POL into specialty business �18 of 20 officers new • Implemented four pillar strategy • Nearly 50% of The Second 6 Years History of PolyOne – A Transformation • Focused on increasing volume, not profits • Heavily tied to cyclical markets 2000 2006 2012 The FormationThe Formation The TransformationThe Transformation The New PolyOneThe New PolyOne organization • Demonstrated ability to deliver • Nearly 50% of business operating income derived from Specialty Platform* • Specialty assets acquired *Pro forma for ColorMatrix acquisition Page 8 30% 50% 70% 90% $10 $12 $14 $16 $18 PolyOnePolyOne Stock Price S&P 500 (relative performance) Strategy and Execution Drive Results | | | | -50% -30% -10% 10% 30% $0 $2 $4 $6 $8 $10 2006 2007 2008 2009 2010 2011 2012 Page 9 Four Pillar Strategy The World’s Premier Provider of Specialized Polymer Materials, Services & Solutions Page 10 60% 80% 100% % o f O p e ra ti n g I n co m e * Old PolyOne Transformation 2012 Target “What We Said” Mix Shift Highlights Specialty Transformation Ahead of Schedule *Operating Income excludes Corporate Charges ** Pro Forma for the acquisition of ColorMatrix and divestiture of SunBelt 2% 34% 42% 50% >50% 0% 20% 40% 2005 2008 2011 2011** 2012 % o f O p e ra ti n g I n co m e * JV's PP&S Distribution Specialty Specialty OI $5M $46M $89M $117M “What We Said” Page 11 2007 2012 Target 2011 “Where we were” “What we said” “Where we are” 1) Operating Income % Specialty 3.2% 10% - 12% 8.9% PP&S 6.1% 8% - 10% 7.2% Pro forma ColorMatrix Proof of Performance Distribution 3.0% 4% - 5% 5.6% 2) Specialty Platform sss% of Operating Income 20% >50% 50% 3) Specialty Vitality Index 21% 35% - 40% 49% 4) ROIC* (pre-tax) 11% >15% 16% 5) Sales outside the US 37% >40% 40% *ROIC is defined as TTM adjusted OI divided by the sum of average debt and equity over a 5 quarter period Page 12 2011 Pro forma ColorMatrix 2015 Target “Where we are” “Where we expect to be” 1) Operating Income % Specialty 8.9% PP&S 7.2% 12 – 16% 9 – 12% Elevating our Expectations and Yours PP&S 7.2% Distribution 5.6% 2) Specialty Platform % of Operating Income 50% 3) ROIC* (after-tax) 10% 4) Adjusted Annual EPS Growth 3 yr CAGR = 71% 9 – 12% 6 – 7.5% 65 – 75% 15% Double Digit Expansion *ROIC is defined as TTM adjusted OI divided by the sum of average debt and equity over a 5 quarter period Page 13 • Four pillar strategy, coupled with our ability to execute is driving results • Strong leadership team driving growth & executing • Innovation and services provide differentiation and How do we get there? EPS: $2.50 Assumptions • High single digit organic revenue CAGR • Operating margins in mid range of 2015 targets • Housing starts at 85% of 50 year norm by 2015 • No investment in incremental PP&S capacity • Completion of 2-3 midsize accretive acquisitions • No divestitures • Remain comfortably below 3X Net Debt / EBITDA • No global recession 2011 Rev: $2.9B Adj.

Industrial Valle del Cinca S/N Apartado E-22300 Barbastro Spain Avient Corporation - Berea, OH Liquid Colorants and Additives for Plastics , 680 N. Page 2 of 4 https://abs.ez2xs.com https://abs.ez2xs.com A B S Q u al it y E va lu at io n s C er ti fic at io n E Avient Corporation - Cergy, France Design and Manufacture of Color and Additive Concentrates and Specialty Compounds , 14 Avenue de l'Eguillette Saint Ouen l'Aumône - 95310 France Avient Corporation - Esenyurt, Turkey Design and Manufacture of Specialty Engineered Thermoplastics Orhangazi Mah. 1683 Sok. Page 3 of 4 https://abs.ez2xs.com https://abs.ez2xs.com A B S Q u al it y E va lu at io n s C er ti fic at io n E Avient Corporation - Mountain Top, PA Manufacturing, Shipping and Receiving , 855 Oak Hill Road Mountain Top - PA 18707 United States Avient Corporation - Oricain (Pamplona), Spain Design and Manufacture of Color and Additive Concentrates and Specialty Compounds Pol.

MAJOR TELECOM COMPANY B A S E S T A T I O N P H A S E S H I F T E R • Required customized Dk / Df values tailored to a unique antenna design • Quick qualification of designs and short lead times were critical to support the rapid rollout of new 5G networks • Met required Dk / Df properties using two customized solutions offering Dk 3.6, Df 0.0006 and Dk 3.1, Df 0.0007 • Accelerated speed to market due to thermoplastics’ design flexibility Custom Edgetek™ Formulations KEY REQUIREMENTS WHY AVIENT?