Cesa™ WithStand™ Antimicrobial Additives Cesa™ WithStand SX Low Haze Antimicrobial Additives Cesa™ WithStand™ Antimicrobial Solutions

Cesa™ WithStand™ Antimicrobial Additives Cesa™ WithStand SX Low Haze Antimicrobial Additives Cesa™ WithStand™ Antimicrobial Solutions

Cesa™ Light Additives Cesa™ WithStand™ Antimicrobial Additives Cesa™ WithStand™ Antimicrobial Solutions

Options for non-per- and polyfluoroalkyl substances (Non-PFAS) and non-halogenated additives in packaging, healthcare, consumer goods, and various industrial materials such as Cesa™ Non-PFAS Process Aids for polyolefins film and pipette tips and non-halogenated Cesa™ Flame Retardants Additives for polyethylene terephthalate (PET) fiber applications Cesa™ Fiber Additives for Cool & Warm Feeling – Offer Comfort & Efficiency for Sports Clothes (April 16, 14:50–15:10, Hall 20, Booth L61).

PERSONAL CARE DEVICES P A T I E N T M O B I L I T Y • Diminish the growth of harmful microbes on surfaces without compromising product performance • Achieve cohesive color across different polymeric materials with the addition of antimicrobial ingredients • Accelerate product development timeline • Preserved polymer performance by minimizing undesirable microbes • Designed a masterbatch solution that achieved color harmony between diverse polymeric materials even with the addition of antimicrobial ingredients • Accelerated speed to market by several weeks with Avient’s pre-tested material and supplier expertise while reducing costs of lab testing fees by up to $50,000 Cesa™ WithStand™ Antimicrobial Additives with OnColor™ Colorants KEY REQUIREMENTS WHY AVIENT?

Free Cash Flow Calculation December 31, 2023 Cash provided by operating activities $ 201.6 Taxes paid on gain on sale of business 104.1 Adjusted cash provided by operating activities $ 305.7 Capital expenditures $ (119.4) Free cash flow $ 186.3 2 Three Months Ended December 31, Year Ended December 31, 2023 2022 2023 2022 Sales: Color, Additives and Inks $ 459.4 $ 490.8 $ 2,007.4 $ 2,355.0 Specialty Engineered Materials 259.8 300.8 1,138.2 1,044.4 Corporate (0.2) (1.2) (2.8) (2.5) Sales $ 719.0 $ 790.4 $ 3,142.8 $ 3,396.9 Operating income: Color, Additives and Inks $ 61.8 $ 44.3 $ 259.9 $ 301.0 Specialty Engineered Materials 29.4 35.2 142.5 140.1 Corporate (48.1) (79.1) (205.6) (197.8) Operating income $ 43.1 $ 0.4 $ 196.8 $ 243.3 Other expense, net: $ 4.3 $ (28.4) $ 5.8 $ (59.7) Depreciation & amortization: Color, Additives and Inks $ 22.2 $ 25.2 $ 98.3 $ 101.3 Specialty Engineered Materials 19.8 20.3 81.5 48.7 Corporate 2.2 3.1 9.0 12.5 Depreciation & amortization $ 44.2 $ 48.6 $ 188.8 $ 162.5 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 84.0 $ 69.5 $ 358.2 $ 402.3 Specialty Engineered Materials 49.2 55.5 224.0 188.8 Corporate (45.9) (76.0) (196.6) (185.3) Other expense, net $ 4.3 $ (28.4) $ 5.8 $ (59.7) EBITDA $ 91.6 $ 20.6 $ 391.4 $ 346.1 Special items in EBITDA 22.3 86.8 110.4 162.5 EBITDA - excluding special items $ 113.9 $ 107.4 $ 501.8 $ 508.6 APM pro forma adjustments - 8 months 2022* — — — 83.1 Pro forma EBITDA $ 113.9 $ 107.4 $ 501.8 $ 591.7 * Pro forma adjustment for January - August 2022 APM results (period before Avient ownership). 3 AVNT February IR Presentation_w_Non-GAAP Recs.pdf AVNT February IR Presentation.pdf Avient corporation�investor presentation DISCLAIMER Slide Number 3 Creating a world-class�sustainable organization Top-tier sustainability performance�and recognition Slide Number 6 Slide Number 7 Portfolio transformation Slide Number 9 END MARKET observations�(% of company sales) Regional observations�(% of company sales) Slide Number 12 Slide Number 13 Slide Number 14 Slide Number 15 Slide Number 16 Slide Number 17 Slide Number 18 Slide Number 19 Slide Number 20 Slide Number 21 Slide Number 22 2023 segment, end market and Geography Color, Additives & Inks Specialty Engineered Materials Slide Number 26 AVNT Q4 2023 Earnings Presentation.pdf AVNT Q4 2023 Earnings Presentation_For Website_with Non-GAAP.pdf IR Deck - AVNT-2023.12.31 (2.12.24 9PM Milestone February 12 0905 pm).pdf Attachment 3.26.24 - Public Lender Presentation Non-GAAP Attachments (005).pdf

Cesa™ Withstand™ Antimicrobial Additives Cesa™ WithStand™ Antimicrobial Additives give your plastic products an added layer of defense against microorganisms such as bacteria, mold, and fungi.

Additives including Cesa™ Nox A4R polyolefin antioxidant technology and Cesa™ Unify™ A4R polyolefin compatibilizer, both of which can enhance recycling and enable greater use of recycled materials to support a more circular economy  

Avient showcases polymer recycling solutions including Cesa™ Nox A4R Additives for Enhanced Recycling and ColorMatrix™ SmartHeat™ liquid dispersion process aids that can improve the recyclability of PET bottles at the Plastics Recycling LATAM Conference in Mexico City This includes Cesa™ Nox A4R Additives for Enhanced Recycling, Avient’s Color Prediction Service, which digitally illustrates the possibilities of post-consumer recycled (PCR) content in solutions, and ColorMatrix™ SmartHeat™ liquid dispersion process aids, which can improve the recyclability of polyethylene terephthalate (PET) bottles.

New PTFE-free and non-halogen Cesa™ Flame Retardant Additives can help producers of polycarbonate E&E applications prepare for possible future PFAS restrictions   Avient’s new Cesa™ Flame Retardant Additives for polycarbonate are formulated without PTFE, which is typically used as an anti-drip agent in conventional flame-retardant polycarbonate.