For individuals, this is generally your social security number (SSN). Social security number – – or Employer identification number – Part II Certification Under penalties of perjury, I certify that: 1. For mortgage interest paid, acquisition or abandonment of secured property, cancellation of debt, contributions to an individual retirement arrangement (IRA), and generally, payments other than interest and dividends, you are not required to sign the certification, but you must provide your correct TIN.

General Purposes The general purposes of the Committee are: • Oversee and monitor the establishment and maintenance by management of comprehensive safety, health, environmental, physical security and product stewardship policies, standards and practices for the Company, including risks related to such matters Oversee programs established by the Company whereby the Company is responsible to monitor compliance with Company policies, standards and practices and with applicable governmental laws and regulations concerning safety, health, environmental, physical security and product stewardship on a global basis. Compliance Programs • At least annually review the programs and procedures established by the Company that monitor compliance with the Company’s policies, standards and practices, and laws and regulations with respect to safety, health, environmental, physical security and product stewardship, including providing oversight of the systems that are in place to monitor and mitigate the Company’s carbon footprint and physical risks associated with climate change; • Periodically review with management the significant safety, health, environmental, physical security, and product stewardship risks or exposures faced by the Company, if any, and steps taken by management to minimize such risks and exposures to the Company and its constituencies; • At least annually review the status of the Company’s environmental and safety audit process, assessing compliance with Company policies, standards, practices, laws and regulations; and • Periodically review claims, demands, administrative orders and legal proceedings against the Company regarding safety, health, environmental, physical security and product stewardship matters.

Microsoft Word - 55453- PolyOne Corporation RCMS 2013 Option 2.docx ABS Quality Evaluations Letter Of Conformity Page 1 of 1 This is to confirm that the Environment, Health, Safety and Security Management System of: PolyOne Corporation 33587 Walker Road Avon Lake, OH 44012 U.S.A. has been assessed by ABS Quality Evaluations, Inc. and found to be in conformance with the requirements set forth by: RCMS®:2013 (Option 2) The Environment, Health, Safety and Security Management System is applicable to: Responsible Care Management System activities and corporate supported processes associated with the design and manufacture of plastic compounds, colorants, thermoplastic elastomer compounds, color concentrates and compounding of thermoplastic products.

Microsoft Word - 55543 Letter of Conformity RCMS Option 2 .docx ABS Quality Evaluations Letter Of Conformity This is to confirm that the Environment, Health, Safety and Security Management System of: PolyOne Corporation 3100 North 35th Street Terre Haute, IN 47804 U.S.A. WITH ADDITIONAL FACILITIES LISTED ON THE ATTACHED ANNEX) has been assessed by ABS Quality Evaluations, Inc. and found to be in conformance with the requirements set forth by: RCMS®:2013 (Option 2) The Environment, Health, Safety and Security Management System is applicable to: Design and Manufacture of Plastic Compounds Certificate No: 55543 Effective Date 21 December 2017 ABS Quality Evaluations, Inc. 16855 Northchase Drive, Houston, TX 77060, U.S.A.

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. Securities and Exchange Commission We provide Adjusted EBITDA because we believe that investors and securities analysts will find Adjusted EBITDA to be a useful measure for evaluating our operating performance.

AVIENT RESPONSIBLE CARE POLICY Avient Corporation conducts its operations in a manner that is protective of the environment, and the health, safety and security of associates, customers, and all our stakeholders, including the communities in which we operate. We further define these commitments with individual Policies on Environment, Safety & Health, Security and Product Stewardship.

https://www.preperm.com/reference/security-scanner/ Security equipment manufacturer

For individuals, this is generally your social security number (SSN). If you have changed your last name without informing the Social Security Administration (SSA) of the name change, enter your first name, the last name as shown on your social security card, and your new last name. Enter it in the social security number box.

Cybersecurity breaches, global information systems security threats and more sophisticated and targeted computer crime pose a risk to the security of our systems and networks and the confidentiality, availability and integrity of our data and communications. Our CISO and cybersecurity teams hold relevant certifications, including, but not limited to, Certified Information Systems Security Professional, Security+ Certification, Factor Analysis for Information Risk Analyst, Certified Information Systems Auditor, Security Systems Certified Practitioner or Certified Federal Information Security Management Act Compliance Practitioner. In millions) 2023 2022 Senior secured revolving credit facility due 2026 $ — $ — Senior secured term loan due 2026 — 423.6 Senior secured term loan due 2029 709.0 385.5 5.75% senior notes due 2025 647.2 645.2 7.125% senior notes due 2030 716.2 714.9 Other Debt 7.6 9.7 Total Debt $ 2,080.0 $ 2,178.9 Less short-term debt 9.5 2.2 Total long-term debt, net of current portion $ 2,070.5 $ 2,176.7 On August 16, 2023, the Company refinanced its senior secured term loans by amending its Credit Agreement (the Term Loan Amendment).

All Security Incidents shall be reported to Avient via email to soc@avient.com without undue delay and not later than 24 hours upon becoming aware of or suspecting a Security incident. For all Goods supplied to the U.S. and/or Canada, Supplier shall comply with CTPAT supply chain security guidelines. Supplier shall report any irregularity with respect to safety, health and environment and security.