Investor Relations Contact: Eric R. Media Contact: Kyle G. Media Relations Contacts

The company noted that GAAP EPS includes 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. Investor Contacts

Commenting on the Company's 2021 outlook, Investor Relations Contact: Giuseppe (Joe) Di Salvo, Vice President, Treasurer and Investor Relations, Avient Corporation, +1 440-930-1921, giuseppe.disalvo@avient.com, or Media Contact: Kyle G. Investor Contacts

Has an immediate family member who is a current partner of the Company’s internal or external auditor, or who is a current employee of the Company’s internal or external auditor and personally works on the Company’s audit; 2 E. External Communication The Board believes that the Company’s senior management should speak for the Company. Periodically, the Company will provide opportunities for directors to visit Company facilities in order to provide greater understanding of the Company’s business and operations.

Under these circumstances, contact the Corporate Ethics Officer (ethics.officer@avient.com) or General Counsel (legal.officer@avient.com) immediately. Contact your Legal partner to request a due diligence review, and ensure you have received written approval prior to working with any agent or third party. An independent company receives all website and phone reports received by the Ethics Hotline and reports the information to the Corporate Ethics Officer.

The company is dedicated to serving customers in diverse industries around the globe, by creating value through collaboration, innovation and an unwavering commitment to excellence. Media Relations Contacts Company Officers

To meet the FERC requirements, each utility company is required to perform a risk assessment of their systems, identify the most critical assets within the power grid, and then propose and implement a plan to protect them. Using GlasArmor panels, Ballisti-Wall® and Ballisti-Cover® solutions enable utility companies to add a superior level of protection to critical components and meet FERC security requirements within a modular, adaptable construction.  Learn more about Avient’s advanced composite ballistic panel technologies, composite solutions or contact us to connect with one of our experts.

Rolatube, an innovative company with a fresh approach to product design, is the world’s only bistable, rollable composite manufacturer. The thermoplastic polymer base resin used also enables recyclability to support the company’s sustainability goals. If you’d like assistance with material selection for your applications, contact us.

Companies in these sectors are now looking for ways to further increase their security of supplies. Companies placing medical devices and packaged pharmaceuticals on the market need their products to comply with healthcare standards, no matter where their products are sold and no matter where they procure their raw materials. For healthcare companies, it means the selected custom colorant or functional additive can be procured from the Mevopur site most conveniently located for the converter, reducing the risk of supply disruption that can be caused by cross-border trade restrictions.

The Company noted it will provide more details on its 2021 outlook during the webcast scheduled for 9:00 a.m. There will be a question and answer section following the company’s prepared remarks. For the same reasons, the Company is unable to address the probable significance of the unavailable information. 4 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.