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

Forward-looking statements give current expectations or forecasts of future events and are not guarantees of future performance. Investor Relations, Giuseppe (Joe) Di Salvo, Vice President, Treasurer and Investor Relations, Avient Corporation, +1 440-930-1921, giuseppe.disalvo@avient.com; Media, Kyle G. Rose, Vice President, Corporate Communications, Avient Corporation, +1 440-930-3162, kyle.rose@avient.com

TERMS AND CONDITIONS These Terms and Conditions govern the sale of Products (“Product(s)”) 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 this contract with such law, decree, order, regulation, or ruling. Terms and Conditions (December 1, 2024)

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 or Media Contact: Kyle G. Rose, Vice President, Corporate Communications, Avient Corporation, +1 440-930-3162, kyle.rose@avient.com

OMNICOLOR™ MULTIPURPOSE COLORANTS Polyethylene 1% Polypropylene 1% GP Polystyrene 1% HI Polystyrene 1–2% Acrylics (Opaque) 1% PBT Polyester 1% PET Polyester 1% Polyurethane 1–2% Polyamide (Nylon) 1% Acetal 1% SAN 1% ABS 1–3% PVC 1–3% Polycarbonate 1% Thermoplastic 1–3% Alloys & Blends 1–3% EVA 1% Filled Polymers 1–3% RECOMMENDED ADDITION RATES CONCENTRATE SELECTION Omnicolor colorants are generally selected because of their versatility where a wide range of polymers are processed and their availability for sale in small quantities. Increasing the back pressure 2. Therefore, Omnicolor should not be used in: 1.

1 Company’s non-GAAP reconciliation can be found at the press release here. Forward-looking statements give current expectations or forecasts of future events and are not guarantees of future performance. Any forward-looking statement speaks only as of the date on which such statement is made, and we undertake no obligation to publicly update forward-looking statements, whether as a result of new information, future events or otherwise.

1 Company’s non-GAAP reconciliation can be found at the press release here. Forward-looking statements give current expectations or forecasts of future events and are not guarantees of future performance. Any forward-looking statement speaks only as of the date on which such statement is made, and we undertake no obligation to publicly update forward-looking statements, whether as a result of new information, future events or otherwise.

1 Company’s non-GAAP reconciliation can be found at the press release here. Forward-looking statements give current expectations or forecasts of future events and are not guarantees of future performance. Any forward-looking statement speaks only as of the date on which such statement is made, and we undertake no obligation to publicly update forward-looking statements, whether as a result of new information, future events or otherwise.

Forward-looking statements give current expectations or forecasts of future events and are not guarantees of future performance. Investor Relations, Giuseppe (Joe) Di Salvo, Vice President, Treasurer and Investor Relations, Avient Corporation, +1 440-930-1921, giuseppe.disalvo@avient.com; Media, Kyle G. Rose, Vice President, Marketing and Communications, Avient Corporation, +1 440-930-3162, kyle.rose@avient.com

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, or Media Contact: Kyle G. Rose, Vice President, Marketing and Communications, Avient Corporation, +1 440-930-3162, kyle.rose@avient.com