AVNT-2022.09.30-News Release 1 NEWS RELEASE FOR IMMEDIATE RELEASE Avient Announces Third Quarter 2022 Results • Completed the acquisition of DSM Protective Materials (including Dyneema®) on September 1st and the sale of the Distribution business on November 1st • $750 million of after-tax proceeds from the sale of Distribution used to redeem all Senior Unsecured Notes due in 2023 and pay down a portion of term loan debt • GAAP EPS from continuing operations of ($0.30) includes special items of ($0.75) primarily associated with acquisition-related costs and an adjustment to environmental reserves • Adjusted EPS excluding intangible amortization of $0.59 is in line with the company’s guidance of $0.58 provided on September 27th • Revised full year adjusted EPS guidance to $2.60 primarily as a result of recently announced COVID lockdowns CLEVELAND – 2022年11月2日 – Avient Corporation (NYSE: AVNT), a leading provider of specialized and sustainable solutions, today announced its third quarter 2022 results. Examples include: • Dyneema®, the world’s strongest fiber™, enables unmatched levels of performance and protection for end-use applications, including ballistic personal protection, marine and sustainable infrastructure and outdoor sports • Unique technologies that improve the recyclability of products and enable recycled content to be incorporated, thus advancing a more circular economy • Light-weighting solutions that replace heavier traditional materials like metal, glass and wood, which can improve fuel efficiency in all modes of transportation and reduce carbon footprint • Sustainable infrastructure solutions that increase energy efficiency, renewable energy, natural resource conservation and fiber optic / 5G network accessibility Avient is certified ACC Responsible Care®, a founding member of the Alliance to End Plastic Waste and certified Great Place to Work®.

Our performance was supported by strong demand for our Dyneema® fiber technology used in personal protection applications and raw material deflation. We are focused on driving profitable, organic, top-line growth while expanding margins," added Sustainable infrastructure solutions that increase energy efficiency, renewable energy, natural resource conservation and fiber optic / 5G network accessibility

CAPABILITIES • Prototype part sampling • Tooling validation • Process optimization • Material configuration • Application development support • Laminate analysis • Mechanical system analysis • Resin flow with laminate inserts • Finite Element Analysis EQUIPMENT SPECIFICATIONS Injection Molding • Milacron-Fanuc Roboshot α-S15OiA with 4-axis robot • Maximum shot capability at 171 grams with a clamping for 198 tons • Trial molds include a 4"x6" flat plaque and a 3"x10" hat stiffening member Compression Molding • 450 ton down acting press • 39" x 39" platen size • Features automatic shuttle table with IR preheat oven Material Testing • Instron Model 5982 Universal Testing System with 100 kN load capacity • AVE2 non-contacting video extensometer with digital image correlation capability • Environmental chamber that enables testing from -150° to 350° C PRODUCT BULLETIN PROCESSABILITY MEETS PERFORMANCE Polystrand™ advanced thermoplastic composites combine high strength, unidirectional, continuous fibers with engineered thermoplastic resins to create continuous fiber reinforced thermoplastic (CFRTP) materials that feature exceptional strength-to-weight ratio and high impact resistance.

CESA™ FIBER ADDITIVES ELECTRET In filtration applications, nonwoven fabrics are often electrically charged to improve the filtration of fine particles. Recommended use: nonwovens exposed to sunlight in construction, transportation or any outdoor application REMAFIN™ FIBER COLORANTS WHITE White nonwovens are predominantly used for hygiene products.

The revolving credit facility has a U.S. and a Canadian line of credit. The Company also has a credit line of $16.0 million with Saudi Hollandi Bank. The revolving credit facility has a U.S. and a Canadian line of credit.

In Januar y we acquired Fiber-Line, a global leader in customized engineered fibers and composite materials that ser ves the fiber optic cable, oil & gas, industrial and consumer industries.

At the same time, the situation was adding significant expense to the manufacturer’s bottom line, as it had to defend product failure lawsuits brought by construction companies who had assumed they had purchased genuine equipment.

It is comprised of two layers inside the closure, and can be manufactured using compression lining or injection molding processes.

THE SOLUTION The Avient technical team leveraged its expertise in liquid colorants and chemical additives to scientifically engineer its line of ColorMatrix™ Excelite™ chemical foaming additives (CFAs) for PVC processing.

GLS™ TPEs with Antimicrobial Technologies This specialty line of GLS™ thermoplastic elastomers has imbedded antimicrobial additives that inhibit bacterial growth by 99.9% or more (log 3) and resist fungal growth to protect molded plastic parts.