They are based on management’s expectations that involve a number of business risks and uncertainties, any of which could cause actual results to differ materially from those expressed in or implied by the forward-looking statements. The non-GAAP financial measures include: adjusted EPS, Specialty platform operating income percentage, adjusted operating income, and return on invested capital.  PolyOne’s chief operating decision maker uses these financial measures to monitor and evaluate the ongoing performance of the Company and each business segment and to allocate resources.  Addressable market exceeds $40 billion  Strong performance demonstrates that our strategy and execution are working  Megatrends and emerging opportunities align with strengths  Innovation and services provide differentiation, incremental pricing power and competitive advantage  Strong and proven management team driving growth and performance 21 POLYONE CORPORATION Segment Highlights POLYONE CORPORATION 22 2015 Revenue: $0.8 Billion At a Glance: Color, Additives & Inks Key Applications 2015 Revenue by Industry Expanding Profits 1.7% 4.6% 5.1% 5.5% 7.2% 8.1% 9.7% 12.2% 14.7% 16.7% 17.0% 20%+ 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 YTD 2020 Operating Income % of Sales Platinum Vision United States 48% Europe 33% Asia 12% Latin America 5% Canada 2% Packaging 31% Industrial 13% B & C 11% W & C 11% Transportation 9% Consumer 8% Textiles 8% Healtchare 6% Appliances 2% E & E 1% POLYONE CORPORATION 23 2015 Revenue: $0.5 Billion At a Glance: Specialty Engineered Materials 2015 Revenue by Industry Expanding Profits 1.1% 1.3% 3.4% 5.1% 9.6% 8.0% 8.6% 9.3% 12.1% 14.7% 15.2% 20%+ 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 YTD 2020 Operating Income % of Sales Platinum Vision Consumer 20% Transportation 19% E & E 16% W & C 15% Healthcare 11% Industrial 8% Packaging 5% Appliances 3% B & C 3% United States 49% Europe 29% Asia 20% Canada 2% Key Applications POLYONE CORPORATION 24 2015 Revenue: $0.5 Billion At a Glance: Designed Structures & Solutions 2015 Revenue by Industry Expanding Profits 1.4% 5.6% 7.3% 3.0% 8-10% 0.3% 2012 2013 2014 2015 2016 YTD 2020 Operating Income % of Sales Platinum Vision Transportation 33% Industrial 24% Packaging 19% B & C 9% Healthcare 7% Consumer 5% Appliances 3% United States 97% Canada 3% Key Applications http://www.google.com/url?

If authorized representative is a business entity, not an individual, then please print the business name in the "signature" box, an authorized representative of the business entity must sign in the "By" box and print their name in the "Print Name" box. James DOC ID ----> 202018203934 S T A T E OF O H I O C E R T I F I C A T E Ohio Secretary of State, Frank LaRose 4463782 It is hereby certified that the Secretary of State of Ohio has custody of the business records for and, that said business records show the filing and recording of: AVIENT CORPORATION United States of America State of Ohio Office of the Secretary of State Witness my hand and the seal of the Secretary of State at Columbus, Ohio this 23rd day of April, A.D. 2020. The fees are as follows: Expedite 1 $100 2 Business Days Expedite 2 $200 1 Business Day Expedite 3 $300 4 Business Hours 2.

Full operational responsibility for execution lies within each business unit and operating site. Strategic plans at the facility and business unit level include planned efforts to achieve sustainability and operational goals. The Sustainability Council includes representation from business units, functions and regions from across the organization.

They are based on management’s expectations that involve a number of business risks and uncertainties, any of which could cause actual results to differ materially from those expressed in or implied by the forward-looking statements. 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 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, retain relationships with customers of acquired companies, and achieve the expected results of such acquisitions, including whether such businesses will be accretive to our earnings; • 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; • 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 and laws and regulations regarding the disposal of plastic in jurisdictions 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; • Information systems failures and cyber attacks; • Our ability to continue to pay regular cash dividends and the amounts and timing of any future dividends; 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. The non-GAAP financial measures include: adjusted EPS, Specialty platform operating income percentage, adjusted operating income, and return on invested capital. • PolyOne’s chief operating decision maker uses these financial measures to monitor and evaluate the ongoing performance of the Company and each business segment and to allocate resources.

Leek, United Kingdom 3. Full operational responsibility for execution lies within each business unit and operating site. Strategic plans at the facility and business unit level include planned efforts to achieve sustainability and operational goals.

Page 1 of 4 https://abs.ez2xs.com https://abs.ez2xs.com ISO 9001:2015 Certificate Of Conformance ANNEX Certificate No.: 65799 Avient Corporation At the below facilities FACILITY NAME FACILITY ACTIVITY ADDRESS Avient Corporation - Avon Lake, OH Management of QMS, Design and manufacture of colour and additive concentrates, thermoplastic resins and specialty compounds 33587 Walker Road Avon Lake OH 44012 United States Avient (Argentina) SA Administration, Site management, Manufacture, Laboratory (QC and Colormatching), Procurement, Maintenance, Infrastructure, Warehouse and Transport, Sales Av. Langiewicza 50 95-050 Konstantynów Łódzki Poland Clariant Masterbatches (Saudi Arabia) Ltd Administration, Site management, Manufacture, Laboratory, Procurement, Maintenance, Infrastructure, Warehouse and Transport 2nd Industrial City, Al-Kharj Road Riyadh Saudi Arabia Avient Colorants Singapore Pte Ltd Administration, Site management, Manufacture, Laboratory, Procurement, Maintenance, Infrastructure, Warehouse and Transport 1 International Business Park Singapore 609917 Avient Colorants Singapore Pte Ltd Administration, Site management, Manufacture, Laboratory, Procurement, Maintenance, Infrastructure, Warehouse and Transport 8 Third Chin Bee Road Singapore 618684 Avient South Africa (Pty) Ltd. Organize Sanayi Bölgesi, 83539 27060 Sehitkamil Türkiye Avient Colorants USA LLC Administration, Site management, Manufacture, Laboratory, Procurement, Maintenance, Infrastructure, Warehouse and Transport 926 Elliott Road Albion MI 49224 United States Avient Corporation Administration, Site management, Manufacture, Laboratory, Procurement, Maintenance, Infrastructure, Warehouse and Transport 3023 Mayo Street Dalton GA 30720 United States Avient Corporation Administration, Site management, Manufacture, Laboratory, Procurement, Maintenance, Infrastructure, Warehouse and Transport 85 Industrial Park Holden MA 01520 United States Avient Corporation Administration, Site management, Manufacture, Laboratory, Procurement, Maintenance, Infrastructure, Warehouse and Transport 17 Foss Road Lewiston ME 04240 United States Avient Corporation Administration, Site management, Manufacture, Laboratory, Procurement, Maintenance, Infrastructure, Warehouse and Transport 9101 International Parkway Minneapolis MN 55428 United States Avient Corporation Administration, Site management, Manufacture, Laboratory, Procurement, Maintenance, Infrastructure, Warehouse and Transport 337 Timber Road Mooresville NC 28115 United States Avient Corporation Administration, Site management, Manufacture, Laboratory, Procurement, Maintenance, Infrastructure, Warehouse and Transport 4425 East Elwood Street, Suite 104 Phoenix AZ 85040 United States Avient Corporation Administration, Site management, Manufacture, Laboratory, Procurement, Maintenance, Infrastructure, Warehouse and Transport 625 Wegner Drive West Chicago IL 60185 United States Avient Corporation Administration, Site management, Manufacture, Laboratory, Procurement, Maintenance, Infrastructure, Warehouse and Transport 382 Arbor Court Winchester VA 22602 United States Avient Vietnam Company Limited Administration, Site management, Manufacture, Laboratory, Procurement, Maintenance, Infrastructure, Warehouse and Transport 3 VSIP street 02 75000 Tuan Anh Town Vietnam Avient Colorants (Guangzhou) Ltd.

They are based on management’s expectations that involve a number of business risks and uncertainties, any of which could cause actual results to differ materially from those expressed in or implied by the forward‐looking statements. 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 performance and/or sales. • Factors that could cause actual results to differ materially from those implied by these forward looking statements include but are not limited to:• 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 Spartech acquisition, 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;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 amount and timing of repurchases, if any, of PolyOne common shares and our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends;  The effect on foreign operations of currency fluctuations, tariffs, and other political, economic and regulatory risks;  Changes in polymer consumption growth rates in the markets where we conduct business;g p y p g ;  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, employee productivity goals, and an inability to raise or sustain prices for products or services;, , p y p y g , y p p ;  An inability to maintain appropriate relations with unions and employees; 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. • The above list of factors is not exhaustive. • We undertake no obligation to publicly update forward‐looking statements, whether as a result of new information, future events or otherwise. 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. • 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.

As a global company headquartered in the United States, both U.S. laws and the laws and regulations of other countries where we do business apply to our activities. If the local policies or guidelines at a certain business unit or location are stricter than the policy or guideline in the Code, you must always follow the stricter policy. They are also responsible to make all necessary disclosures in accordance with generally accepted accounting principles in effect in the United States and other applicable countries.

chief operating decision maker uses these financial measures to monitor and evaluate the ongoing performance of the Company and each business segment and to allocate resources. They are based on management's expectations that involve a number of business risks and uncertainties, any of which could cause actual results to differ materially from those expressed in or implied by the forward-looking statements. Business Segment Operations (Unaudited)

Photos: (Right) PolyOne associate wellness events in Belgium and the United States. Since 2007 we have raised more than $14 million for United Way chapters throughout North America. $14M+ For United Way Since 2007 1.8 1.4 1 .6 .2 2007 2010 2013 2016 2019 $ M IL L IO N S U .S . For Unit 1.8 1.4 1 .6 .2 2007 2010 2013 20 $ M IL L IO N S U .S .