April 23, 2024 SHANGHAI – April 23, 2024 – Avient Corporation, a leading provider of specialized and sustainable materials solutions and services, is highlighting its newly expanded LubriOne™ portfolio that now includes a range of innovative internally lubricated polymer formulations that are produced without polytetrafluoroethylene (PTFE), for the start of the Chinaplas 2024 show today in Shanghai. Avient will be exhibiting its broad portfolio of advanced technologies including its PTFE-free LubriOne Internally Lubricated Formulations at Chinaplas 2024 from April 23-26, in Hall 8.2 Booth F31 at the National Exhibition and Convention Center of Hongqiao, Shanghai.  

April 17, 2023 PARIS, France – April 17, 2023 – Today, Avient Corporation is excited to announce it will showcase Dyneema® ultra-lightweight specialty fiber for the first time as part of its growing composite materials and sustainable solutions portfolios at JEC World 2023 next week. JEC World is the leading global trade show for composite materials and their applications, taking place at the Paris Nord Villepinte exhibition park April 25-27, 2023.

Webcast Details Avient will host a webcast on Wednesday, April 20, 2022 at 9:00 a.m. In addition, a recording of the audio will be available for one week, beginning at noon EST on Wednesday, April 20, 2022. http://www.avient.com/investors https://edge.media-server.com/mmc/p/edkwvu9r https://edge.media-server.com/mmc/p/edkwvu9r http://www.avient.com/investors https://www.avient.com/ 3 Forward-looking Statements In this press release, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995.

Microsoft Word - GHS MSDS Changes April 2014 Final.doc Brian E. Zoretich Senior Manager, Product Stewardship Phone: 440.930.1291 Fax: 440.930.3034 www.polyone.com brian.zoretich@polyone.com PolyOne Corporation is a global leader in innovative polymer materials, services and solutions. 33587 Walker Road, Avon Lake, Ohio USA 44012 April 2014 Dear Valued Customer, As part of PolyOne’s commitment to offer our customers the most value in a competitive global marketplace, we are making changes to our Material Safety Data Sheets (MSDSs) in order to meet the coming requirements of the Globally Harmonized System of Classification and Labeling of Chemicals (GHS). What our customers will see: In mid-April 2014, our newly formulated or significantly reformulated U.S. and European solutions will be accompanied by a new GHS-formatted MSDS (CLP classification in Europe).

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April 24, 2024 SÃO PAULO, Brazil – April 24, 2024 – Avient Corporation is pleased to announce that its Color and Additives team in Latin America (LATAM) will showcase its portfolio of specialized and sustainable materials solutions and services at the ABRE Sustainability Forum. Visit Avient at Vila dos Ipês in São Paulo, Brazil, Stand 9, April 24-25, to learn more about the company’s commitment to sustainability.  

April 23, 2024 SHANGHAI – April 23, 2024 – Avient Corporation, a premier provider of specialized and sustainable materials solutions and services, announces the launch of a new range of OnColor™ durable orange nylon colorants developed to improve the heat and long-term color stability of cautionary, orange-colored polymers for high-voltage electric vehicle (EV) connectors. Avient will be exhibiting its broad portfolio of advanced technologies for the plastics industry, including its new OnColor durable orange nylon colorants for high-voltage EV connectors at Chinaplas 2024 from April 23-26, in Hall 8.2 Booth F31 at the National Exhibition and Convention Center of Hongqiao, Shanghai.

April 11, 2022 ANAHEIM, Calif. – April 11, 2022 – Avient Corporation, a premier provider of specialized and sustainable material solutions and services, will exhibit in person this week at Medical Design & Manufacturing (MD&M) West and highlight several technologies, including the recently launched Colorant Chromatics™ Transcend™ premier healthcare colorants and the online platform called Avient Now.   Avient is exhibiting in booth 2101 at MD&M West from April 12-14.

Version 6, April 2015 (additions are donoted in underlined text) General information on GHS and timelines Q1: What is GHS? Beginning in mid-April 2014, PolyOne PolyOne FAQs for the Globally Harmonized System (GHS) Safety Data Sheets (SDS) and Product Labeling. Version 6, April 2015 (additions are donoted in underlined text) become ignitable under various industry definitions commonly used by OSHA.

7071-1998-AQ-RGC-RvA Initial certification date: 28 April 1998 Valid: 30 March 2024 – 29 March 2027 This is to certify that the management system of PolyOne-Shanghai, China No. 88, Guo Shou Jing Road, Z. Park, China (Shanghai) Pilot Free Trade Zone, Shanghai, China 201203 and the sites as mentioned in the appendix accompanying this certificate has been found to conform to the Quality Management System standard: GB/T 19001-2016 / ISO 9001:2015 This certificate is valid for the following scope: Design and Manufacture of Colour and Additive Concentrates http://www.dnv.com/assurance Certificate no.: 7071-1998-AQ-RGC-RvA Place and date: Shanghai, 20 March 2024 Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid. Park, China (Shanghai) Pilot Free Trade Zone, Shanghai, China 201203 Design and Manufacture of Colour and Additive Concentrates http://www.dnv.com/assurance