All grades are formulated for durability, delivering property retention and UV resistance comparable to traditional TPEs. Caption: PolyOne introduces reSound™OM, bio-derived TPEs with 40 to 50 percent bio-renewable content derived from sugarcane. Michelle Maniscalco Senior Manager, Marketing Communications PolyOne Corporation +1 440-930-1988 michelle.maniscalco@avient.com

Adding TPE production enables the company to support customers in the country even more quickly and with a broader portfolio of domestically manufactured materials. We’re very excited to build upon our momentum in India with domestic production of TPEs,” said Vikas Vij, managing director India at PolyOne. Michelle Maniscalco Senior Manager, Marketing Communications PolyOne Corporation +1 440-930-1988 michelle.maniscalco@avient.com

MATERIAL BREAKTHROUGH: VERSAFLEX™ CE BLUE JEAN STAIN RESISTANT TPES FOR WHITE OR LIGHT-COLORED PHONE CASES Phone case brands have struggled to design white or light-colored cases that do not stain when in contact with blue jeans. Avient has formulated a new material that offers blue jean stain resistance similar to that of silicone*, yet with all the benefits of using a TPE: increased design freedom, an efficient supply chain leading to faster speed to market, and lower total part costs.

DURABILITY High Impact Strength, Weatherability SOLUTION: PP, HDPE, ASA, Nylon Engineered Formulations AESTHETIC APPEAL Custom Color & Special Effects, Paint Replacement SOLUTION: Custom Polymer Colorants, Pre-Colored High-Gloss Thermoplastics THERMAL MANAGEMENT LED Heat Sinks, Design Flexibility SOLUTION: Thermally Conductive Formulations EXTREME PERFORMANCE Chemical & Fire Resistance, High Temperature Performance SOLUTION: Nylon Engineered Formulations, Long Fiber Reinforced Composites, Continuous Fiber Composite Tapes & Laminates, Flame Retardant Polyolefin Formulations STRUCTURAL INTEGRITY High Stiffness-to-Weight Ratio, Metal Replacement SOLUTION: Pultruded Rods, Tubes & Custom Profiles, Long Fiber Reinforced Composites SENSORY EXPERIENCE Vibration Damping, Durability, Customization, Custom Color, Low Friction SOLUTION: Thermoplastic Elastomers (TPEs), Custom Polymer Colorants, Internally Lubricated Formulations, Advanced Composite Springs STRENGTH & STABILITY Excellent Dimensional Stability, High Stiffness, Impact Resistance SOLUTION: Short & Long Fiber Formulations, Continuous Fiber Composite Tapes & Laminates SURFACE PROTECTION Performance Enhancements SOLUTION: Scratch & Mar Resistance, UV Stable Additives, Anti-Static Additives STRUCTURAL PERFORMANCE Corrosion Resistance, Lightweighting SOLUTION: Long Fiber Reinforced Composites, Nylon Engineered Formulations, Continuous Fiber Composite Tapes & Laminates, Chemical Foaming Additives METAL REPLACEMENT Lightweighting, Heat Management, Load Carrying Capability SOLUTION: Long Fiber Reinforced Composites, Continuous Fiber Composite Tapes & Laminates TACTILE EXPERIENCE Soft-Touch Feel, Durability SOLUTION: Thermoplastic Elastomers (TPEs) A COLLABORATION THAT BRINGS STYLE & GRIT To all thrill seekers, fans and enthusiasts, your brand says, “Bring it!”

TPE Knowledge Base General-purpose screw with compression ratio of 2:1 to 3:1 can be used Suggested nozzle diameters are 1/16" (0.0625" or 1.59 mm) to 3/16" (0.1875" or 4.76mm)

The company noted that GAAP EPS includes special items (Attachment 3) and intangible amortization expense (Attachment 1). https://www.avient.com/news 4 Pro Forma for Acquisition of Avient Protective Materials business (APM) On September 1, 2022, the company acquired DSM’s Protective Materials business, the foundation of which is the renowned technology and globally admired brand of Dyneema®, the World’s Strongest Fiber™. # # 7 Investor Relations Contact: Giuseppe (Joe) Di Salvo Vice President, Treasurer and Investor Relations Avient Corporation +1 440-930-1921 giuseppe.disalvo@avient.com Media Contact: Kyle G.

Understanding TPE Performance for Enabling 5G Technologies Designing Consumer Products with TPEs - White Paper Adhesion mechanisms and novel TPE developments for overmolding

Understanding TPE Performance for Enabling 5G Technologies Designing Consumer Products with TPEs - White Paper Adhesion mechanisms and novel TPE developments for overmolding

Pro Forma Financial Information The Company acquired Avient Protective Materials (“Dyneema”) on September 1, 2022 (the “Acquisition Date”) and sold the Distribution segment on November 1, 2022. To provide comparable results, the company references “pro forma” financial metrics, which include the business results of Avient Protective Materials for periods prior to the Acquisition Date, as if the transaction occurred on January 1, 2021 and reflect Distribution as a discontinued operation. The Company acquired the Clariant Color business on July 1, 2020.

AVNT-2022.06.30-News Release 1 NEWS RELEASE FOR IMMEDIATE RELEASE Avient Announces Second Quarter 2022 Results • Second quarter sales grew to $1.3 billion, a 5% increase over the prior year quarter, and an all-time quarterly record • GAAP EPS increased 24% to $0.92 compared to $0.74 in the prior year quarter • Adjusted EPS increased 13% to $0.98 compared to $0.87 in the prior year quarter, exceeding second quarter guidance of $0.92. # # Investor Relations Contact: Giuseppe (Joe) Di Salvo Vice President, Treasurer and Investor Relations Avient Corporation +1 440-930-1921 giuseppe.disalvo@avient.com Media Contact: Kyle G. Rose Vice President, Corporate Communications Avient Corporation +1 440-930-3162 kyle.rose@avient.com mailto:giuseppe.disalvo@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 June 30, Six Months Ended June 30, 2022 2021 2022 2021 Sales $ 1,302.4 $ 1,235.2 $ 2,596.2 $ 2,397.5 Operating Income 129.5 108.1 258.1 228.5 Net income attributable to Avient shareholders 84.7 68.8 168.9 148.1 Basic earnings per share attributable to Avient shareholders $ 0.93 $ 0.75 $ 1.85 $ 1.62 Diluted earnings per share attributable to Avient shareholders $ 0.92 $ 0.74 $ 1.83 $ 1.60 Senior management uses comparisons of adjusted net income attributable to Avient shareholders and diluted adjusted earnings per share (EPS) attributable to Avient shareholders, excluding special items, to assess performance and facilitate comparability of results.