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.

Avient Corporation was originally established as PolyOne Corporation in 2000 through the consolidation of two companies in the materials industry. The early years were challenging as the company struggled to find or create its identity as a combined enterprise. As the company evolved into specialty areas, we focused on putting our customers and their needs first, then looking inward to make a difference.

However, no one company or country can solve the plastics waste problem. Company Company Officers

Jefferies and Company, Inc. Avient Company Officers Investor Contacts

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.

With the increase in sales experienced so far, the company is increasing its adjusted EPS expectation to The company anticipates it will end the year with approximately Investor Contacts

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.

The Company uses both GAAP (generally accepted accounting principles) and non-GAAP financial measures. Each of such adjustments has not yet occurred, is out of the Company’s control, and/ or cannot be reasonably predicted. For the same reasons, the Company is unable to address the probable significance of the unavailable information.

ROBOTIC EMULATION ENABLES PERSONALIZED PROSTHETICS WITH COMPOSITES Photo courtesy of the DoD Center for the Intrepid COMPOSITE SPRINGS PROVIDE FLEXIBILITY IN PROSTHETIC PERFORMANCE AND DESIGN © 2022, All Rights Reserved Avient Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012 To learn more, please contact Avient at 1.844.4AVIENT (1.844.428.4368) or visit www.avient.com. Enter Humotech, a company focused on accelerating the discovery of innovative real-world solutions to enhance and augment human mobility through research and development of prostheses, exoskeletons, and other wearable machines.

MATERIAL REDUCES COSTS WITH LOWER SPECIFIC GRAVITY, AND HIGHER FLOW THAN COMPETITIVE TPV © 2021, All Rights Reserved Avient Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012 To learn more about Versalloy™ Thermoplastic Vulcanizate, contact Avient at +1.844.4AVIENT (1.844.428.4368) or visit avient.com. The company also sought a vendor who could provide rapid delivery and reliable material supply to avoid production delays.