In this press release, statements that are not reported financial results or other historical information are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Securities and Exchange Commission

In this press release, statements that are not reported financial results or other historical information are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995.   Securities and Exchange Commission

In this press release, statements that are not reported financial results or other historical information are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. You are advised to consult any further disclosures we make on related subjects in our reports on Form 10-Q, 8-K and 10-K that we provide to the Securities and Exchange Commission.

In this press release, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. You are advised to consult any further disclosures we make on related subjects in our reports on Form 10-Q, 8-K and 10-K that we provide to the Securities and Exchange Commission.

In this press release, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. You are advised to consult any further disclosures we make on related subjects in our reports on Form 10-Q, 8-K and 10-K that we provide to the Securities and Exchange Commission.

BUILDING & CONSTRUCTION INDUSTRY BULLETIN SAFETY Security and prevention SOLUTION: Flame retardants, laser marking additives, electrical and thermal additives SURFACE FINISH Low maintenance, natural wood grain aesthetics SOLUTION: Wood plastic composite (WPC) capstock technology PROTECTION Potable water tanks, electrical connectors, piping & tubing, insulation SOLUTION: Antimicrobials, electrical and thermal additives LONGEVITY Long service life, chemical resistance, mold & mildew resistance SOLUTION: Weatherable colorants, impact modifiers, antimicrobial additives SUSTAINABILITY LEED building & material credits, healthy building, reduced energy use, lightweighting, eco-conscious SOLUTION: Recycled materials, chemical foaming agents, bio-derived colorants & additives LANDSCAPE HARMONY Concrete surfaces, patio coloring, stucco SOLUTION: Pool colorants, metallic flooring colorants, stains The building and construction industry is dynamic, with trends towards high- performance buildings, elegant outdoor areas, healthier living spaces, and eco-friendly environments.

KEY CHARACTERISTICS • Manufactured at four ISO 13485 certified manufacturing sites, providing global consistency and increased security of supply • Documented change control beyond CAS number, reducing risk of change • Non-phthalate and formulated without animal-derived substances • Available as concentrates or ready-to-use formulations in a wide range of polymers • Functionality and color can be combined in one product for convenience REGULATORY SUPPORT • Raw materials tested to: - ISO 10993-1 and USP biological evaluation - European Pharmacopeia 3.1.3/3.1.5 (polyolefin) - USP (polyethylene) - ICH Q3D elemental impurities • Registered Drug Master File (Type III) and/or Device Master File • Documentation support for approval or transition to comply with (new) regulations such as IVDR APPLICATION BULLETIN Healthcare use limitations apply—see below.

Prohibition on Hedging Our Securities. Avient’s Insider Trading Policy prohibits Directors, officers and certain other employees of Avient from engaging in hedging or other speculative transactions with respect to our securities, including buying or selling puts or calls, short sales, or margin purchases of our securities. The value realized on exercise (column (c)) was computed based on the difference between the closing stock price of the underlying securities at exercise and the base price of the SARs.

Prohibition on Hedging or Pledging Our Securities. Number of Securities Underlying Unexercised Options (#) Exercisable (column (b)) This column shows the fully vested and exercisable SARs held by the Named Executive Officers as of December 31, 2017. The value realized on exercise (column (c)) was computed by determining the difference between the closing stock price of the underlying securities at exercise and the base price of the SARs.

Se espera de usted que comprenda y siga las pautas de la empresa al utilizar las redes sociales, ya sea para uso empresarial o personal y el uso implique información o comunicaciones de Avient o guarde relación con su empleo o responsabilidades con o hacia la empresa. 16 Índice Seguridad informática, licencias de software y derechos de autor Como con las demás formas de información esenciales para las operaciones de Avient, usted debe proteger cuidadosamente la información contenida en ordenadores o grabada en diversos medios de almacenamiento para evitar la duplicación accidental o no autorizada, su modificación, divulgación o destrucción.