YesÍ No‘ Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. DOCUMENTS INCORPORATED BY REFERENCE Part III of this Annual Report on Form 10-K incorporates by reference certain information from the registrant’s definitive Proxy Statement with respect to the 2012 Annual Meeting of Shareholders.

The definition further incorporates qualitative indicators, such as the likelihood of a material that a reasonable person would deem an omission or misstatement important. Select all that apply ☑ No [Fixed row] (7.1.2) Has your emissions accounting methodology, boundary, and/or reporting year definition changed in the reporting year? Change(s) in methodology, boundary, and/or reporting year definition?

Cet engagement se reflète dans notre définition de la durabilité : employés, produits, planète et performance. Cet engagement se reflète dans notre définition de la durabilité : employés, produits, planète et performance.

Yes Í No ‘ Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. DOCUMENTS INCORPORATED BY REFERENCE Part III of this Annual Report on Form 10-K incorporates by reference certain information from the registrant’s definitive Proxy Statement with respect to the 2014 Annual Meeting of Shareholders.

Yes Í No ‘ Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. DOCUMENTS INCORPORATED BY REFERENCE Part III of this Annual Report on Form 10-K incorporates by reference certain information from the registrant’s definitive Proxy Statement with respect to the 2015 Annual Meeting of Shareholders.

Yes Í No ‘ Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. DOCUMENTS INCORPORATED BY REFERENCE Part III of this Annual Report on Form 10-K incorporates by reference certain information from the registrant’s definitive Proxy Statement with respect to the 2016 Annual Meeting of Shareholders.

The 2017 Plan includes a definition of “Change of Control,” which is set forff th below. 17 Other Features Change of Control: The 2017 Plan includes a definition of “Change of Control.” Definitions.

Microsoft Word - 2016 Proxy - Final.docx UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the RegistrantR Filed by a Party other than the Registrant £ Check the appropriate box: £ Preliminary Proxy Statement £ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) R Definitive Proxy Statement £ Definitive Additional Materials £ Soliciting Material Pursuant to Rule 14a-12 POLYONE CORPORATION (Name of Registrant as Specified in its Charter) (Name of Person(s) Filing Proxy Statement, if Other Than the Registrant) Payment of Filing Fee (Check the appropriate box): R No fee required Generally, the definition of a Qualifying Separation from Service is if Mr.

Responsabilità aggiuntive di supervisori e manager di Avient • Date il buon esempio e definite gli standard per un adeguato comportamento in Avient

Eight ways we help customers meet their sustainability goals through material science: *Ellen MacArthur Foundation criteria **Avient Sustainable Solutions definitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) ^2020 is Pro forma to include full year of the Clariant Masterbatch business 2016 2017 2018 2019 2020PF^ Revenue from Sustainable Solutions** 2016–2020 Eco-conscious Sustainable Infrastructure VOC Reduction Human Health & Safety Reduced Energy Use Bio-polymers $340M $405M $455M $550M $790M Sustainability Report | 2020 39 https://www.ellenmacarthurfoundation.org/explore/the-circular-economy-in-detail Innovation: The Lifeblood of a Specialty Organization At Avient, our proven ability to innovate materials that enable our customers’ sustainability goals remains a key differentiator for our company. 1) 2019 and 2020 figures are pro forma to include a full year of the acquired Clariant Masterbatch business (2) 2021 EPS figure reflects management guidance as of July 30, 2021 earnings call 4% 8% 10% 15% 21% 23% ** 2020 Pro Forma for Clariant Masterbatch acquisition High Growth End Markets 2006 2020 PF** 58% M ke t R ve e a % o f To ta l Consumer Packaging 0% 20% 40% 60% 80% 0% 20% 40% 60% 80% 2005 2010 2015 2020 PF** $14M $117M $273M $527M Adjusted EBITDA* from Specialty Platform o f A ju st E B IT D A * Specialty EBITDA DistributionJV’s Performance Products & Solutions Specialty Applications * Adjusted EBITDA is EBITDA excluding corporate costs and special items ** 2020 Pro Forma for Clariant Masterbatch acquisition 7% 46% 87% 66% A Specialty Transformation Poised for Future Growth Building & Construction 2006 2020 PF** 38% 9% M ke t R ve e a % o f To ta l Adjusted EPS Growth 2019PF(1) 2020PF(1) 2021F(2) $1.93 $3.00 $1.74 31% CAGR Sustainability Report | 2020 74 *Avient Sustainable Solutions definitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) **2020 is Pro forma to include full year of the Clariant Masterbatch business 2016 2017 2018 2019 2020PF** Revenue from Sustainable Solutions* 2016–2020 VOC Reduction Human Health & Safety Reduced Energy Use Bio-polymers Eco-conscious Sustainable Infrastructure Sustainable Solutions Performance As highlighted in our Products section, Avient has a highly-technical and broad portfolio of material solutions that help our customers—and our planet— be more sustainable.