Avient does not provide reconciliations of forward-looking non-GAAP financial measures, such as outlook for Adjusted EBITDA, Adjusted Earnings Per Share and Free Cash Flow to the most comparable GAAP financial measures on a forward-looking basis because Avient is unable to provide a meaningful or accurate calculation or estimation of reconciling items and the information is not available without unreasonable effort. Management believes this provides comparability of the performance of the combined businesses. A reconciliation of these measures to their most directly comparable GAAP measures is provided in the tables below.

Leadership, EHS&S-PS, Facility Services, Design & Development, Information Technology, Sourcing, Logistics, Legal, and Human Resources 65536-21623Certificate No: Page 4 of 53 ABS Quality Evaluations, Inc. 1701 City Plaza Drive, Spring, TX 77389, U.S.A. NEU Specialty Engineered Materials, LLC 15 Corporate Drive North Haven, CT 06473 Compound, Supply, and Prototyping Services of Thermoplastics 65536-109481Certificate No: Page 34 of 53 ABS Quality Evaluations, Inc. 1701 City Plaza Drive, Spring, TX 77389, U.S.A.

Avient Corporation provides equal opportunity in all aspects of its employment practices.

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. Management believes this provides comparability of the performance of the combined businesses. Leveraging Service as Our Timeless Differentiator — We serve our customers with excellence to build trusting, lasting and collaborative relationships.

S’abstenir d’offrir de l’argent, des prêts, des crédits, des remises préjudiciables, des cadeaux, des produits ou des services à des collaborateurs d’Avient pour leur usage ou leur avantage personnel.

Activities, brands, products, and services Benefits provided to full-time employees that are not provided to temporary or part-time employees Occupational health services

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. Management believes this provides comparability of the performance of the combined businesses. Leveraging Service as Our Timeless Differentiator — We serve our customers with excellence to build trusting, lasting and collaborative relationships.

Any samples or developmental material provided by Seller are provided “AS IS” with no warranty as to its performance and such samples or materials shall not create any warranty by sample, which is hereby waived. The act of providing a sample or developmental material does not operate as permission, recommendation, or inducement to practice any patented invention without permission of the patent owner. Seller reserves to itself all applicable duty drawback allowances, and Buyer shall provide assistance in connection with Seller’s application for the same.

Any samples or developmental material provided by Seller are provided “AS IS” with no warranty as to its performance and such samples or materials shall not create any warranty by sample, which is hereby waived. The act of providing a sample or developmental material does not operate as permission, recommendation, or inducement to practice any patented invention without permission of the patent owner. 5. Seller reserves to itself all applicable duty drawback allowances, and Buyer shall provide assistance in connection with Seller’s application for the same. 11.

Any samples or developmental material provided by Seller are provided “AS IS” with no warranty as to its performance and such samples or materials shall not create any warranty by sample, which is hereby waived. The act of providing a sample or developmental material does not operate as permission, recommendation, or inducement to practice any patented invention without permission of the patent owner. 5. Seller reserves to itself all applicable duty drawback allowances, and Buyer shall provide assistance in connection with Seller’s application for the same. 11.