The company reported first quarter sales of 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

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

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.

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

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

In addition to providing resources for associates to improve their skills and further their career with Avient, the learning opportunities enhance collaboration across the company as associates build their networks. Our Avient Academy core offerings include trainings to increase business acumen, enhance presentation skills, cultivate relationships across the company, support the transition from individual contributor to manager, and prepare top talent to become visionary leaders at the company.

The vision that guides our collective efforts is consistent and unwavering: To be the company of choice for all. This Employee Resource Group works to create a safe and accepting environment that enables LGBTQ associates to perform to their fullest potential and contribute to the success of our company. Through a combination of seminar participation and peer company benchmarking, our team quickly began offering educational programming and awareness—for both LGBTQ associates and supporters.

The company noted that GAAP EPS includes special items (Attachment 3). The question and answer session will follow the company’s presentation and prepared remarks. To access Avient’s news library online, please visit www.avient.com/news # # # 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.

For the same reasons, the Company is unable to address the probable significance of the unavailable information. The question and answer session will follow the company’s presentation and prepared remarks. # # 7 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.