This technology also provides the opportunity to support future applications to enhance the communication quality for 5G construction.

Moreover, the innovative and collaborative nature of the pipelining system can increase future pipeline safety, limit environmental, climate, and public impact, and provide a cost-saving solution to energy providers around the globe.

Forward-looking statements give current expectations or forecasts of future events and are not guarantees of future performance. 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. Rose, Vice President, Corporate Communications, Avient Corporation, +1 440-930-3162, kyle.rose@avient.com

KLA: 245806 - v5 - p. 1/8 TERMS AND CONDITIONS TERMOS E CONDIÇÕES 1. These Terms and Conditions (“Terms and Conditions”) shall apply to any and all sales of products (“Products”) of PolyOne Corporation and its affiliates ("Seller") to third parties (“Buyer”). 1. If a present or future law, governmental decree, order, regulation, or ruling under any existing or future legislation prevents Seller from increasing or revising the price as provided herein, or nullifies or reduces any price or price increase hereunder, upon written notice from one to the other Seller and Buyer will attempt to identify mutually agreeable changes to conform this contract with such law, decree, order, regulation, or ruling.

Forward-looking statements give current expectations or forecasts of future events and are not guarantees of future performance. Achievement of future results is subject to risks, uncertainties and assumptions. Rose, Vice President, Marketing and Communications, Avient Corporation, +1 440-930-3162, kyle.rose@avient.com

As we look to the future, we are confident that Forward-looking statements give current expectations or forecasts of future events and are not guarantees of future performance. Rose, Vice President, Corporate Communications, PolyOne Corporation, +1 440-930-3162, kyle.rose@avient.com

TERMS AND CONDITIONS These Terms and Conditions govern the sale of Products to another (“Buyer”) by Avient Corporation and its affiliates (“Seller”). 1. If a present or future law, governmental decree, order, regulation, or ruling under any existing or future legislation prevents Seller from increasing or revising the price as provided herein, or nullifies or reduces any price or price increase hereunder, upon written notice from one to the other, Seller and Buyer will attempt to identify mutually agreeable changes to conform these Terms with such law, decree, order, regulation, or ruling. Terms and Conditions (April 1, 2024)