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 A Y 3 , 2 0 2 3 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. Avient Specialty Formulators Other Specialty / Chemical Companies 2023E(%) 32 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. Avient 2011 and 2018 valuations reflect trailing 12 months EBITDA at December 31 of the respective years. 33 EV / 2023E EBITDA Historic Multiple 6.5 8.3 9.9 14.6 13.7 13.0 11.9 8.8 18.7 17.4 11.8 10.0 9.7 9.1 8.0 7.9 A vi e n t (2 0 1 1 ) A vi e n t (2 0 1 8 ) A vi e n t (2 0 2 3 ) K W R P P G R P M A V Y F U L E C L H X L F M C A S H S C L C E E M N H U N Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) 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.

EYEWEAR BRAND S U N G L A S S F R A M E S • Can float on water • Excellent surface with low flash • Compatible with secondary painting process • Formulated a 0.82g/cm³ density material for lightweight performance that allowed the frames to float on water even after painting • Enabled excellent surface by addressing the typical flashing edge problems • Delivered a paintable material to support brand identity and convey value • Dedicated on-site support to ensure the density performance during secondary painting processing Edgetek™ LD Formulation KEY REQUIREMENTS WHY AVIENT?

MC-60191PP MOLY ORANGE MC-61362PP ORANGE W/UV MC-61436PE SUN ORANGE

EPS guidance 2025 financial guidance ▲ Further Fed rate cuts ▲ Chinese stimulus ▲ Economic recovery in Europe ▲ Continued strength in defense applications for both military and local law enforcement ▼ Policy uncertainty and changes ▼ Persistent inflation impacting consumer spending / slowdown of US economy ▼ Further deterioration of Europe economy ▼ FX volatility M A C R O A S S U M P T I O N S I N F L U E N C I N G R A N G E 23Copyright © . All Rights Reserved 2025 Avient 2024 sales B U S I N E S S S E G M E N T S E N D M A R K E T S R E G I O N S 63% 37% S E M C A I 23% 20% 15% 10% 10% 8% 7% 4% 3% Packaging Telecom Energy Defense Healthcare Building & construction Transportation Industrial Consumer 41% 35% 18% 6% US & Canada Latin America Asia Europe, Middle East and Africa 24Copyright © . All Rights Reserved 2025 Color, Additives & Inks E N D M A R K E T S R E G I O N S 34% 21% 15% 11% 9% 8% Packaging Telecom 1%Energy 1% Transportation Industrial Consumer 34% 37% 20% 9% US & Canada Latin America Asia Europe, Middle East and Africa Healthcare Building & Construction 25Copyright © .

AVIENT CORPORATION S E C O N D Q U A R T E R 2 0 2 3 R E S U L T S (NYSE: AVNT) J U L Y 2 7 , 2 0 2 3 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. expectations: US & Canada LATAM EMEA Asia • Net price benefit remains greater than wage and energy inflation • Clariant synergies and reduced administrative costs Q2 2 023 SEQUENTI AL SAL ES BY REGI ON Q 2 2 0 2 3 v s . Avient reflects 2023 adjusted EBITDA guidance of $525M and estimated run-rate CAPEX of $110M. 2023E (%) 23 79 90 84 83 76 73 88 82 77 74 72 67 57 20 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 E C L A S H H U N E M N S C L Avient Specialty Formulators Other Specialty / Chemical Companies MULTI PL E EX PANSION Source: Peer data per Bloomberg as of July 21, 2023 Note: Avient reflects 2023 adjusted EBITDA guidance of $525M and closing share price of $40.93.

C A R C O M P O N E N T M A N U FAC T U R E R A C O U S T I C A N D T H E R M A L M A N A G E M E N T S Y S T E M S • High rPET content without loss of tenacity • High volume production • Color options • Offered a chain extender that supports stable spinning and maintains fiber tenacity to help achieve targeted rPET content • Provided technical support for production scale-up • Proposed different color concentrates suitable for application and polymer grade Cesa™ Fiber Additives – chain extenders for recycled polyester (rPET) KEY REQUIREMENTS WHY AVIENT?

ELECTRICAL APPLIANCE BRAND H O U S E H O L D P R O D U C T S I N R E C Y C L E D A B S A N D P S • Support to qualify a new raw material sourcing process • Color prediction feasibility for new material grades • Color design guidance to maintain brand identity and differentiation • Color solutions that work with mixed grades of rABS and recycled polystyrene • Worked with the brand owner to test multiple styrenic grades and understand the best fit across colors and recycled resins • Supported integration of multiple resin solutions for the best rendering and aesthetics in rABS and rPS • Helped approve 7 colors to be launched within the forthcoming 18 months PCR Color Prediction Service KEY REQUIREMENTS WHY AVIENT?

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?

All Rights Reserved 2024 16 Launch Growth Maturity Decline T I M E S A L E S 1. 2. 3. 1 2 3 Portfolio prioritization & building new trajectories of growth Portfolio view 17Copyright © . • New growth opportunities in prefabricated / modular construction - driven by lightweighting, waste reduction, and energy efficiency • Avient differentiation is with operational velocity, manufacturing capability and added functionality with flame retardancy vital to this space $20B ADDRESSABLE MARKET A V I E N T T E C H N O L O G I E S , S O L U T I O N S Ballistic-resistant panels Composite lumber reinforcement Functional panels - interiors and exteriors Fire-retardant thermoplastic panels Copyright © . $8B ADDRESSABLE MARKET A V I E N T T E C H N O L O G I E S , S O L U T I O N S Cross arms Turbine blade stiffeners Utility poles Insulator rods Copyright © .