Beggs 45 Senior Vice President, Chief Financial Officer Cathy K. Senior Vice President and Chief Financial Officer, 2008 to 2011. BEGGS Senior Vice President and Chief Financial Officer (Principal Financial and Accounting Officer) February 22, 2022 Jamie A.

The non-GAAP financial measures include: adjusted EPS, adjusted operating income, free cash flow and adjusted EBITDA. A reconciliation of each historical non-GAAP financial measure with the most directly comparable GAAP financial measure is attached to this presentation which is posted on our website at www.avient.com. To provide comparable financial results, the Company references “pro forma” financial metrics, which include the business results of Clariant Color for periods prior to the Acquisition Date.

A reconciliation of each historical non-GAAP financial measure with the most directly comparable GAAP financial measure is attached to this presentation which is posted on our website at www.avient.com. To provide comparable financial results, the Company references “pro forma” financial metrics, which include the business results of Clariant Color for periods prior to the Acquisition Date. Non-GAAP financial measures have limitations as analytical tools and should not be considered in isolation from, or solely as alternatives to, financial measures prepared in accordance with GAAP.

Forward – Looking Statements Page 2 • This presentation includes the use of both GAAP (generally accepted accounting principles) and non-GAAP financial measures. In certain cases throughout this presentation, we have presented GAAP and non-GAAP financial measures adjusted to reflect full- year 2012 Pro forma results, including Spartech and Glasforms and excluding discontinued operations. • PolyOne’s chief operating decision makers use these financial measures to monitor and evaluate the ongoing performance of the Company and each business segment and to allocate resources. In addition, operating income before special items and adjusted EPS are components of various PolyOne annual and long-term employee incentive plans. • A reconciliation of each non-GAAP financial measure with the most directly comparable GAAP financial measure is attached to this presentation which is posted on our website at www.polyone.com.

BEGGS Senior Vice President and Chief Financial Officer Jamie A. Beggs is senior vice president and chief financial officer of Avient Corporation, a premier provider of specialized and sustainable material solutions and services. She previously served as chief financial officer of Hunt Consolidated, Inc., a diversified holding company whose businesses served many industries including energy, real estate and private investments.

The non-GAAP financial measures include: adjusted EPS, adjusted operating income, free cash flow and adjusted EBITDA. A reconciliation of each non-GAAP financial measure with the most directly comparable GAAP financial measure is attached to this presentation which is posted on our website at www.avient.com. To provide comparable financial results, the Company references “pro forma” financial metrics, which include the business results of CMB for periods prior to the Acquisition Date.

A reconciliation of each historical non-GAAP financial measure with the most directly comparable GAAP financial measure is attached to this presentation which is posted on our website at www.avient.com. Non-GAAP financial measures have limitations as analytical tools and should not be considered in isolation from, or solely as alternatives to, financial measures prepared in accordance with GAAP. Below is a reconciliation of these non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with GAAP.

A reconciliation of each historical non-GAAP financial measure with the most directly comparable GAAP financial measure is attached to this presentation which is posted on our website at www.avient.com. Non-GAAP financial measures have limitations as analytical tools and should not be considered in isolation from, or solely as alternatives to, financial measures prepared in accordance with GAAP. The presentation of these measures may be different from non-GAAP financial measures used by other companies.

You are advised to consult any further disclosures we make on related subjects in our reports on Form 10-Q, 8-K and 10-K that we provide to the Securities and Exchange Commission. 5 Non-GAAP Financial Measures The Company uses both GAAP (generally accepted accounting principles) and non-GAAP financial measures. The non-GAAP financial measures include estimated 2022 Dyneema business and Composites Platform pro forma EBITDA. The Company does not provide reconciliations of forward-looking non-GAAP financial measures, such as outlook for adjusted EBITDA, to the most comparable GAAP financial measures on a forward-looking basis because the Company is unable to provide a meaningful or accurate calculation or estimation of reconciling items and the information is not available without unreasonable effort.

SELECTED FINANCIAL DATA Refer to Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” in Part II of this Annual Report on Form 10-K and the notes to our accompanying consolidated financial statements for additional information regarding the financial data presented below, including matters that might cause this data not to be indicative of our future financial condition, results of operations or cash flows. Richardson Executive Vice President and Chief Financial Officer (Principal Financial and Accounting Officer) Date: February 12, 2016 /S/ STEPHEN D. FINANCIAL INFORMATION Security analysts and representatives of financial institutions are invited to contact: Eric R.