Michelle Maniscalco Senior Manager, Marketing Communications Avient Corporation michelle.maniscalco@avient.com Jennifer Huang Senior Manager, Marketing Communications Asia Avient Corporation +86 21 6028-4888 jennifer.huang@avient.com Company Officers

Avient Corporation’s PCR Color Prediction Service earns 2023 Re|focus Sustainability Innovation in Design Award by The Plastics Industry Association (PLASTICS). Media contact Nicole DeChant Avient Corporation nicole.dechant@avient.com Company Officers

Unified social credit code: 91320412MA1NMF5W4P is in conformity with Quality Management System Standard: GB/T19001-2016 / ISO9001:2015 The certificate is valid to the following product(s)/service: Textile (Yarn), Glass Products (Yarn) Coating Processing Registration Address/ Physical Address: R&D Workshop 5, No. 8, Lanxiang Road, West Taihu Science and Technology Industrial Park, Changzhou City, Jiangsu Province, P.

Corporate Media Contact Kyle G. Rose Director, Corporate Communications PolyOne Corporation +1 440-930-3162 kyle.rose@avient.com Company Officers

Avient Corporation common stock trades on the New York Stock Exchange under the AVNT symbol. Avient Company Officers

Learn about Avient Corporation common stock (NYSE: AVNT) performance by reviewing trading statistics, ratios, dividend reinvestment statements and an ownership summary.  Avient Company Officers

Review the estimates of arithmetic mean earnings, mean recommendation and mean future five-year growth rate from analysts who cover Avient Corporation and publish on First Call.  Avient Company Officers

CARPET PRODUCER N Y L O N C A R P E T • Antimicrobial effectiveness for residential and hospital carpets • Suitable for Bulked Continuous Filament (BCF) processed polyamide (nylon) • Limited impact on color • Quick development to address growing market needs for hygienic surface coverings • Developed efficient antimicrobial solution adapted to BCF processing for high-quality yarns • Reduced risk of discoloration with a smartbatch alternative • Leveraged global capabilities to offer quick development, trials and production quantities • Cesa™ Fiber Additives – antimicrobial additives KEY REQUIREMENTS WHY AVIENT? AVIENT SOLUTION ANTIMICROBIAL EFFECTIVENESS LEARN MORE Copyright © 2023, Avient Corporation.

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? AVIENT SOLUTION LOW DENSITY + EXCELLENT SURFACE LEARN MORE Copyright © 2022, Avient Corporation.

Patterson, president and chief executive officer, PolyOne Corporation.  Corporate and eliminations Company Officers