March 17, 2015 New technologies that will launch at NPE 2015 include: ANTEC 2015

Homepage // News Center // PolyOne Shareholders Approve All Proposals at 2015 Annual Meeting May 14, 2015 CLEVELAND – PolyOne Corporation (NYSE: POL), a leading global provider of specialized polymer materials, services and solutions, today held its 2015 annual meeting of shareholders, during which time all presented proposals before shareholders were approved.

Homepage // News Center // PolyOne Features Innovative Packaging Technologies and Inspiration at PACK EXPO 2015 September 28, 2015 CLEVELAND – September 28, 2015 – PolyOne Corporation (NYSE: POL) is highlighting innovative technologies and insights that enable emotional connections through packaging at this year’s PACK EXPO, North America’s largest annual packaging exhibition, being held in Las Vegas this week.

The issuing Certification Body is responsible for the accuracy of this document. Version / Date: 1 (no adjustments) / 30.12.2024 Page 1 of 2 ISCC PLUS Certificate Certificate Number: ISCC-PLUS-Cert-PL214-26100824 Bureau Veritas Polska Sp. z o.o. ISCC compliant materials can be claimed as “in line with FEFAC soy sourcing guidelines 2015”

To check this certificate validity, please call + 33(0) 1 41 97 00 60. AVIENT BELGIUM 2, RUE MELVILLE WILSON 5330 ASSESSE- BELGIUM Bureau Veritas Certification France certify that the Management System of the above organization has been audited and found to be in accordance with the requirements of the management system standard detailed below: Standard ISO 14001 : 2015 Scope of certification DESIGN AND MANUFACTURE OF COLOUR AND ADDITIVE CONCENTRATES, THERMOPLASTIC RESINS AND SPECIALITY COMPOUNDS. Certification cycle start date: 22 February 2023 Subject to the continued satisfactory operation of the organization’s Management System, this certificate expires on: 10 January 2026 Expiry date of previous cycle: : 10 January 2023 Certification audit date: 21 November 2022 Original certification date: 11 January 2017

NYSE: POL) a premier provider of specialized polymer materials, services and solutions, intends to release its fourth quarter 2015 earnings before the market opens on To view the original version on PR Newswire, visit:http://www.prnewswire.com/news-releases/polyone-to-hold-fourth-quarter-2015-conference-call-300203974.html

Homepage // News Center // PolyOne Presents Leading-Edge Solutions at Fakuma 2015 October 13, 2015 The Fakuma trade show is held in Friedrichshafen, Germany from October 13- 17, 2015.

MSC Certificate Place and date: For the issuing office: Shanghai, 20 March 2024 DNV - Business Assurance Building 9, No. 1591 Hongqiao Road, Changning DistrictShanghai China 200336 Zhu Hai Ming Management Representative Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid. ACCREDITED UNIT: DNV Business Assurance B.V., Zwolseweg 1, 2994 LB, Barendrecht, Netherlands - TEL: +31(0)102922689. www.dnv.com/assurance MANAGEMENT SYSTEM CERTIFICATE Certificate no.: 1614-2000-AE-RGC-RvA Initial certification date: 23 May 2000 Valid: 24 May 2024 – 23 May 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 has been found to conform to the Environmental Management System standard: ISO 14001:2015 This certificate is valid for the following scope: Design and Manufacture of Colour and Additive Concentrates http://www.dnv.com/assurance

Registration of a company name with the Companies Registry does not confer any trade mark rights or any other intellectual property rights in respect of the company name or any part thereof. 公公公公 司司司司 更更更更 改改改改 名名名名 稱稱稱稱 證證證證 明明明明 書書書書 CERTIFICATE OF CHANGE OF NAME 本 人 謹 此 證 明 I hereby certify that POLYONE HONG KONG HOLDING LIMITED 已 藉 特 別 決 議 更 改 其 名 稱 ， 該 公 司 根 據 having by special resolution changed its name, is n ow incorporated under the 香 港 法 例 第 622 章《 公 司 條 例 》註 冊 的 名 稱 現 為 Companies Ordinance (Chapter 622 of the Laws of Hon g Kong) in the name of Avient Hong Kong Holding Limited 本 證 明 書 於 二二二二 ＯＯＯＯ 二二二二 一一一一 年 八八八八 月 二二二二 日 發 出 。

Polyone de Mexico Manufacturing - TS 85585 Certificate of Registration QUALITY MANAGEMENT SYSTEM - IATF 16949:2016 This is to certify that: Polyone de Mexico Manufacturing S. de R.L. de C.V. An electronic certificate can be authenticated online. An electronic certificate can be authenticated online.