Avient Corporation (NYSE: AVNT) provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Media contact Nicole DeChant  Avient Corporation  nicole.dechant@avient.com Company Officers

Avient Corporation (NYSE: AVNT), with expected 2021 revenues of $4.6 to $4.7 billion, provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Media contact Michelle Maniscalco Senior Manager, Marketing Communications Avient Corporation michelle.maniscalco@avient.com  Company Officers

Avient Corporation provides specialized and sustainable materials solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Media Contact Nicole DeChant Avient Corporation nicole.dechant@avient.com Company Officers

SHENZEN, China – April 13, 2021 – Avient Corporation, a premier provider of specialized and sustainable material solutions and services, has unveiled its new liquid toner technology for polycarbonate (PC) resins, ColorMatrix™ Optica™ for PC.  Media contact Jennifer Huang Senior Manager, Marketing Communications Asia Avient Corporation +86 21 60284888 jennifer.huang@avient.com   Company Officers

About Avient Avient Corporation (NYSE: AVNT), with 2019 pro forma revenues of $4 billion, provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Jennifer Huang Senior Manager, Marketing Communications Asia Avient Corporation +86 21-6028-4888 jennifer.huang@avient.com Company Officers

CLEVELAND– September 10, 2020 – At the virtual Composites and Advanced Materials Expo (CAMX), Avient Corporation will introduce new enhanced adhesion formulations for its Glasforms™ thermoset pultruded composites. Michelle Maniscalco Senior Manager, Marketing Communications Avient Corporation +1 440-930-1988 michelle.maniscalco@avient.com Company Officers

PolyOne Corporation, with 2014 revenues of $3.8 billion, is a premier provider of specialized polymer materials, services and solutions. Matt Defosse Marketing Communications Manager, Europe PolyOne Corporation +49 6407-907-0386 matt.defosse@avient.com Company Officers

Avient Corporation provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Media contact Jennifer Huang  Senior Manager, Marketing Communications Asia  Avient Corporation   +86 21 60284888  jennifer.huang@avient.com Company Officers

CLEVELAND – December 12, 2022 – Avient Corporation today announced an expansion to its range of polyketone (PK) based materials with new Complēt™ PKE long fiber reinforced engineered thermoplastics. Media contact Nicole DeChant  Avient Corporation  nicole.dechant@avient.com Company Officers

About PolyOne PolyOne Corporation, with 2015 revenues of $3.4 billion, is a premier provider of specialized polymer materials, services and solutions. Media contact Michelle Maniscalco Marketing Communications Manager, North America PolyOne Corporation +1 440-930-1988 michelle.maniscalco@avient.com Company Officers