Click here for a technical bulletin with additional details about the testing. PolyOne Corporation, with 2017 revenues of $3.2 billion, is a premier provider of specialized polymer materials, services and solutions.

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. Seller may change the price and/or terms of delivery and shipment at any time up until delivery, except where a written alternative pricing mechanism exists that is signed by Seller. Buyer acknowledges and represents that it is familiar with and shall strictly comply with all applicable laws and regulations concerning the trade, export or re-export of products, services, data or technology (“Items”), including (but not limited to) the International Traffic in Arms Regulations (ITAR), the Export Administration Regulations (EAR), the trade sanctions regulations administered by the U.S.

This document is issued by the Company subject to SGS General Conditions of certification services available on Terms and Conditions | SGS. Certified since 06 September 2008 Jonathan Hall Global Head - Certification Services Authorised by SGS United Kingdom Ltd Rossmore Business Park, Ellesmere Port, Cheshire, CH65 3EN, UK t +44 (0)151 350-6666 - www.sgs.com https://www.sgs.com/en/terms-and-conditions/

Every Avient associate is accountable for these objectives, which is why we have aligned 20% of our 2022 annual incentive plan with ESG metrics (see details on page 5). In higher-risk areas, we maintain detailed security preparedness plans. Community Service Avient offers a global benefit of Community Service hours.

PolyOne Corporation, with 2013 revenues of $3.8 billion, is a premier provider of specialized polymer materials, services and solutions. Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: our ability to realize anticipated savings and operational benefits from the realignment of assets, including the planned closure of certain manufacturing facilities; the timing of closings and shifts of production to new facilities related to asset realignments and any unforeseen disruptions of service or quality caused by such closings and/or production shifts; our ability to identify and evaluate acquisition targets and consummate acquisitions; the ability to successfully integrate acquired companies into our operations, retain the management teams of acquired companies and retain relationships with customers of acquired companies including without limitations Spartech Corporation; disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; the financial condition of our customers, including the ability of customers (especially those that may be highly leveraged and those with inadequate liquidity) to maintain their credit availability; the speed and extent of an economic recovery, including the recovery of the housing market; our ability to achieve new business gains; the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; changes in polymer consumption growth rates where we conduct business; changes in global industry capacity or in the rate at which anticipated changes in industry capacity come online; fluctuations in raw material prices, quality and supply and in energy prices and supply; production outages or material costs associated with scheduled or unscheduled maintenance programs; unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; an inability to achieve or delays in achieving or achievement of less than the anticipated financial benefit from initiatives related to working capital reductions, cost reductions and employee productivity goals; an inability to raise or sustain prices for products or services; an inability to maintain appropriate relations with unions and employees; our ability to continue to pay cash dividends; the amount and timing of repurchases of our common shares, if any; and other factors affecting our business beyond our control, including, without limitation, changes in the general economy, changes in interest rates and changes in the rate of inflation.

CLEVELAND - PolyOne Corporation (NYSE: POL), a premier provider of specialized polymer materials, services and solutions, today announced that its Board of Directors has appointed Robert M. About PolyOne PolyOne Corporation, with 2013 revenues of $3.8 billion, is a premier provider of specialized polymer materials, services and solutions. Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: our ability to achieve the strategic and other objectives relating to the acquisition of Spartech Corporation, including any expected synergies; our ability to successfully integrate Spartech and achieve the expected results of the acquisition, including, without limitation, the acquisition being accretive; disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; the financial condition of our customers, including the ability of customers (especially those that may be highly leveraged and those with inadequate liquidity) to maintain their credit availability; the speed and extent of an economic recovery, including the recovery of the housing market; our ability to achieve new business gains; the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; changes in polymer consumption growth rates where we conduct business; changes in global industry capacity or in the rate at which anticipated changes in industry capacity come online; fluctuations in raw material prices, quality and supply and in energy prices and supply; production outages or material costs associated with scheduled or unscheduled maintenance programs; unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; an inability to achieve or delays in achieving or achievement of less than the anticipated financial benefit from initiatives related to working capital reductions, cost reductions and employee productivity goals; an inability to raise or sustain prices for products or services; an inability to maintain appropriate relations with unions and employees; the inability to achieve expected results from our acquisition activities; our ability to continue to pay cash dividends; the amount and timing of repurchases of our common shares, if any; and other factors affecting our business beyond our control, including, without limitation, changes in the general economy, changes in interest rates and changes in the rate of inflation.

They use words such as "will," “anticipate,” “estimate,” “expect,” “project,” “intend,” “plan,” “believe” and other words and terms of similar meaning in connection with any discussion of future operating or financial condition, performance and/or sales. items, include statements relating to future actions; prospective changes in raw material costs, product pricing or product demand; future performance; estimated capital expenditures; results of current and anticipated market conditions and market strategies; sales efforts; expenses; the outcome of contingencies such as legal proceedings and environmental liabilities; and financial results. Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: • disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; • the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; • disruptions or inefficiencies in our supply chain, logistics, or operations; • changes in laws and regulations in jurisdictions where we conduct business, including with respect to plastics and climate change; • fluctuations in raw material prices, quality and supply, and in energy prices and supply; • demand for our products and services; • production outages or material costs associated with scheduled or unscheduled maintenance programs; • unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; • our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; • information systems failures and cyberattacks; • our ability to service our indebtedness and restrictions on our current and future operations due to our indebtedness; • amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; • other factors affecting our business beyond our control, including without limitation, changes in the general economy, changes in interest rates, changes in the rate of inflation, geopolitical conflicts, tariffs, and any recessionary conditions; and • other factors described in our Annual Report on Form 10-K under Item 1A, “Risk Factors.” Offsetting any inflationary headwinds with our time-tested rigor in raw material sourcing, substitution and pricing actions 6.

They use words such as "will," “anticipate,” “estimate,” “expect,” “project,” “intend,” “plan,” “believe” and other words and terms of similar meaning in connection with any discussion of future operating or financial condition, performance and/or sales. items, include statements relating to future actions; prospective changes in raw material costs, product pricing or product demand; future performance; estimated capital expenditures; results of current and anticipated market conditions and market strategies; sales efforts; expenses; the outcome of contingencies such as legal proceedings and environmental liabilities; and financial results. Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: • disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; • the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; • disruptions or inefficiencies in our supply chain, logistics, or operations; • changes in laws and regulations in jurisdictions where we conduct business, including with respect to plastics and climate change; • fluctuations in raw material prices, quality and supply, and in energy prices and supply; • demand for our products and services; • production outages or material costs associated with scheduled or unscheduled maintenance programs; • unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; • our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; • information systems failures and cyberattacks; • our ability to service our indebtedness and restrictions on our current and future operations due to our indebtedness; • amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; • other factors affecting our business beyond our control, including without limitation, changes in the general economy, changes in interest rates, changes in the rate of inflation, geopolitical conflicts, and any recessionary conditions; and • other factors described in our Annual Report on Form 10-K under Item 1A, “Risk Factors.” EBITDA 358 384 FY 2023 FY 2024 • Driven by new applications for drug delivery and building & construction as well as demand recovery in packaging and consumer • Adjusted EBITDA margin expansion driven by higher sales and net price benefit EXCL.

Independent Registered Public Accountant Services and Related Fee Arrangements AUDIT Report of the Audit Committee AUDIT The Audit Committee of the Board of Directors CORPORATE GOVERNANCE CORPORATE GOVERNANCE Director Independence Lead Director CORPORATE GOVERNANCE Board Leadership Structure Board’s Oversight of Risk Code of Ethics, Code of Conduct and Corporate Governance Guidelines CORPORATE GOVERNANCE Communication with Board Board and Committees Board Attendance Board Committees CORPORATE GOVERNANCE AAudit Committee – Primary Responsibilities and Requirements NUMBER OF MEETINGS IN 2018: 9 COMMITTEE MEMBERS:* Compensation Committee – Primary Responsibilities and Requirements NUMBER OF MEETINGS IN 2018: 5 COMMITTEE MEMBERS: CORPORATE GOVERNANCE Nominating and Governance Committee – Primary Responsibilities and Requirements NUMBER OF MEETINGS IN 2018: 4 COMMITTEE MEMBERS:* CORPORATE GOVERNANCE Environmental, Health and Safety Committee – Primary Responsibilities and Requirements NUMBER OF MEETINGS IN 2018: 3 COMMITTEE MEMBERS:* Board Refreshment 0% 20% 40% 60% 80% 100% 5 or fewer 6 to 10 More than 10 Years of Service NON-EMPLOYEE DIRECTOR COMPENSATION 2018 NON-EMPLOYEE DIRECTOR COMPENSATION Role Annual Cash Retainers 2018 Director Compensation Table Name Fees Earned or Paid in Cash (a) ($) Stock Awards (b) ($) Total (c) ($) (1) NON-EMPLOYEE DIRECTOR COMPENSATION Fees Earned or Paid in Cash (column (a)) Stock Awards (column (b)) Option Awards Outstanding and Fully-Vested Deferred Shares Name Number of Deferred Shares(1) (#) OWNERSHIP OF POLYONE SHARES OWNERSHIP OF POLYONE SHARES Beneficial Ownership of Our Common Shares Name Number of Shares Owned(1) Right to Acquire Shares Total Beneficial Ownership OWNERSHIP OF POLYONE SHARES Name and Address Number of Shares % of Shares Stock Ownership Guidelines for Non-Employee Directors Section 16(a) Beneficial Ownership Reporting Compliance COMPENSATION DISCUSSION AND ANALYSIS COMPENSATION DISCUSSION AND ANALYSIS Executive Summary Name Title How Pay is Tied to Company Performance. Other Benefits. 2018 Grants of Plan-Based Awards Target ($) (d) Estimated Future Payouts Under Equity Incentive Plan Awards Exercise or Base Price of Option Awards ($/Sh) (i) Threshold (#) (f) Estimated Future Payouts Under Non- Equity Incentive Plan Awards Name (a) Grant Date (b) Grant Date Fair Value of Stock and Option Awards ($) (j) Threshold ($) (c) Maximum ($) (e) All Other Stock Awards: Number of Shares of Stock or Units (#) (h) Target (#) (g) EXECUTIVE COMPENSATION Estimated Future Payouts Under Non-Equity Incentive Plan Awards (columns (c), (d) and (e)) (1) 2018 Annual Incentive Program Payments (2) Cash-Settled Performance Units. Exercise or Base Price of Option Awards (column (i)) Grant Date Fair Value of Stock and Option Awards (column (j)) Narrative Disclosure Relating to the 2018 Summary Compensation Table and the 2018 Grants of Plan-Based Awards Table Outstanding Equity Awards at 2018 Fiscal Year-End Option Exercise Price ($) (e) Option Expiration Date (f) Market Value of Shares or Units of Stock That Have Not Vested ($) (h) Equity Incentive Plan Awards: Market or Payout Value of Unearned Shares, Units or Other Rights that Have Not Vested ($) (j) Name (a) Stock Awards Equity Incentive Plan Awards: Number of Securities Underlying Unexercised Unearned Options (#) (d) Equity Incentive Plan Awards: Number of Unearned Shares, Units or Other Rights that Have Not Vested (#) (i) Number of Shares or Units of Stock That Have Not Vested (#) (g) Number of Securities Underlying Unexercised Options (#) Unexercisable (c) Number of Securities Underlying Unexercised Options (#) Exercisable (b) Option Awards EXECUTIVE COMPENSATION EXECUTIVE COMPENSATION Number of Securities Underlying Unexercised Options (#) Exercisable (column (b)) Number of Securities Underlying Unexercised Options (#) Unexercisable (column (c)) Equity Incentive Plan Awards: Number of Securities Underlying Unexercised Unearned Options (column (d)) Option Exercise Price (column (e)) Option Expiration Date (column (f)) Number of Shares or Units of Stock That Have Not Vested (column (g)) Market Value of Shares or Units of Stock That Have Not Vested (column (h)) Equity Incentive Plan Awards: Number of Unearned Shares, Units or Other Rights That Have Not Vested (column (i)) EXECUTIVE COMPENSATION Equity Incentive Plan Awards: Market or Payout Value of Unearned Shares, Units or Other Rights That Have Not Vested (column (j)) 2018 Option Exercises and Stock Vested Name (a) Option Awards Stock Awards Number of Shares Acquired on Exercise (#) (b) Value Realized on Exercise ($) (c) Number of Shares Acquired on Vesting (#) (d) Value Realized on Vesting ($) (e) Option Awards (columns (b) and (c)) Stock Awards (columns (d) and (e)) 2018 Nonqualified Deferred Compensation EXECUTIVE COMPENSATION Name Aggregate Executive Registrant Aggregate Aggregate Aggregate Balance at Contributions Contributions Earnings Withdrawals/ Balance at in Last FY in Last FY in Last FY Distributions Last FYE (1) ($)(2) ($)(3) ($)(4) ($) ($)(1)(5) Potential Payments Upon Termination or Change of Control Summary of Potential Payments EXECUTIVE COMPENSATION Management Continuity Agreements Executive Severance Plan EXECUTIVE COMPENSATION Annual Plan Long-Term Incentive Awards Retirement Benefits Payments and Benefits Upon Termination — As of the End of Fiscal Year 2018 EXECUTIVE COMPENSATION EXECUTIVE COMPENSATION CEO Pay Ratio Disclosure CEO Annual Total Compensation for 2018: $6,127,920 Median Employee Annual Total Compensation for 2018: $48,056 Ratio of CEO to Median Employee Annual Total Compensation for 2018: 128:1 How the Median Employee was Determined in 2017 EXECUTIVE COMPENSATION Compensation Committee Interlocks and Insider Participation Policy on Related Person Transactions Risk Assessment of the Compensation Programs EXECUTIVE COMPENSATION Compensation Committee Report The Compensation Committee of the Board of Directors MISCELLANEOUS MISCELLANEOUS PROVISIONS Voting at the Meeting not Shareholder Proposals MISCELLANEOUS Proxy Solicitation We will furnish without charge to each person from whom a proxy is being solicited, upon written request of any such person, a copy of the Annual Report on Form 10-K of the Company for the fiscal year ending December 31, 2018, as filed with the SEC, including the financial statements and schedules thereto.

They use words such as "will," “anticipate,” “estimate,” “expect,” “project,” “intend,” “plan,” “believe” and other words and terms of similar meaning in connection with any discussion of future operating or financial condition, performance and/or sales. items, include statements relating to future actions; prospective changes in raw material costs, product pricing or product demand; future performance; estimated capital expenditures; results of current and anticipated market conditions and market strategies; sales efforts; expenses; the outcome of contingencies such as legal proceedings and environmental liabilities; and financial results. Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: • disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; • the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; • disruptions or inefficiencies in our supply chain, logistics, or operations; • changes in laws and regulations in jurisdictions where we conduct business, including with respect to plastics and climate change; • fluctuations in raw material prices, quality and supply, and in energy prices and supply; • demand for our products and services; • production outages or material costs associated with scheduled or unscheduled maintenance programs; • unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; • our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; • information systems failures and cyberattacks; • our ability to service our indebtedness and restrictions on our current and future operations due to our indebtedness; • amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; • other factors affecting our business beyond our control, including without limitation, changes in the general economy, changes in interest rates, changes in the rate of inflation, geopolitical conflicts, tariffs, and any recessionary conditions; and • other factors described in our Annual Report on Form 10-K under Item 1A, “Risk Factors.” Offsetting any inflationary headwinds with our time-tested rigor in raw material sourcing, substitution and pricing actions 6.