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; changes in laws and regulations regarding plastics in jurisdictions where we conduct business; 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; our ability to achieve strategic objectives and successfully integrate acquisitions, including Avient Protective Materials; an inability to raise or sustain prices for products or services; our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; information systems failures and cyberattacks; 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; and 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 and any recessionary conditions. Three Months Ended March 31, 2023 Three Months Ended March 31, 2022 Reconciliation to Condensed Consolidated Statements of Income $ EPS $ EPS Net income from continuing operations attributable to Avient shareholders $ 20.8 $ 0.23 $ 64.4 $ 0.70 Special items, after tax (Attachment 3) 22.3 0.24 6.4 0.07 Amortization expense, after-tax 15.1 0.16 10.8 0.12 Adjusted net income / EPS $ 58.2 $ 0.63 $ 81.6 $ 0.89 8 Attachment 2 Avient Corporation Condensed Consolidated Statements of Income (Unaudited) (In millions, except per share data) Three Months Ended March 31, 2023 2022 Sales $ 845.7 $ 892.2 Cost of sales 598.1 637.8 Gross margin 247.6 254.4 Selling and administrative expense 190.5 152.2 Operating income 57.1 102.2 Interest expense, net (28.8) (16.9) Other income (expense), net 0.7 (0.6) Income from continuing operations before income taxes 29.0 84.7 Income tax expense (7.7) (20.0) Net income from continuing operations 21.3 64.7 (Loss) income from discontinued operations, net of income taxes (0.9) 19.8 Net income 20.4 84.5 Net income attributable to noncontrolling interests (0.5) (0.3) Net income attributable to Avient common shareholders $ 19.9 $ 84.2 Earnings (loss) per share attributable to Avient common shareholders - Basic: Continuing operations $ 0.23 $ 0.70 Discontinued operations (0.01) 0.22 Total $ 0.22 $ 0.92 Earnings (loss) per share attributable to Avient common shareholders - Diluted: Continuing operations $ 0.23 $ 0.70 Discontinued operations (0.01) 0.21 Total $ 0.22 $ 0.91 Cash dividends declared per share of common stock $ 0.2475 $ 0.2375 Weighted-average shares used to compute earnings per common share: Basic 91.0 91.5 Diluted 91.8 92.3 9 Attachment 3 Avient Corporation Summary of Special Items (Unaudited) (In millions, except per share data) Special items (1) Three Months Ended March 31, 2023 2022 Cost of sales: Restructuring costs, including accelerated depreciation $ (6.6) $ (4.4) Environmental remediation costs (1.4) (2.0) Reimbursement of previously incurred environmental costs — 0.6 Impact on cost of sales (8.0) (5.8) Selling and administrative expense: Restructuring, legal and other (15.7) 1.9 Acquisition related costs (3.4) (2.9) Impact on selling and administrative expense (19.1) (1.0) Impact on operating income (27.1) (6.8) Other income (loss), net (0.2) 0.1 Impact on income from continuing operations before income taxes (27.3) (6.7) Income tax expense (benefit) on above special items 6.9 1.8 Tax adjustments(2) (1.9) (1.5) Impact of special items on net income from continuing operations $ (22.3) $ (6.4) Diluted earnings per common share impact $ (0.24) $ (0.07) Weighted average shares used to compute adjusted earnings per share: Diluted 91.8 92.3 (1) Special items include charges related to specific strategic initiatives or financial restructuring such as: consolidation of operations; debt extinguishment costs; costs incurred directly in relation to acquisitions or divestitures; employee separation costs resulting from personnel reduction programs, plant realignment costs, executive separation agreements; asset impairments; settlement gains or losses and mark-to- market adjustments associated with actuarial gains and losses on pension and other post-retirement benefit plans; environmental remediation costs, fines, penalties and related insurance recoveries related to facilities no longer owned or closed in prior years; gains and losses on the divestiture of operating businesses, gains and losses on facility or property sales or disposals; results of litigation, fines or penalties, where such litigation (or action relating to the fines or penalties) arose prior to the commencement of the performance period; one-time, non-recurring items; and the effect of changes in accounting principles or other such laws or provisions affecting reported results

Avient holds all managers accountable for this behavior and leadership. As we develop our ability to resolve issues and work as a team, we will help each other become more effective and confident, and we will create an inclusive and collaborative work environment. This Code has been developed within the framework of Avient’s values.

Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: • The time required to consummate the acquisition of the Dyneema business, the satisfaction or waiver of conditions in the purchase agreement, the ability to obtain required regulatory or other third-party approvals and consents and otherwise consummate the proposed acquisition of the Dyneema business; • Our ability to achieve the strategic and other objectives relating to the proposed acquisition of the Dyneema business and possible sale of the Distribution business; • 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; • The current and potential future impact of the COVID-19 pandemic on our business, results of operations, financial position or cash flows, including without any limitation, any supply chain and logistics issues; • Changes in polymer consumption growth rates and laws and regulations regarding plastics in jurisdictions where we conduct business; • 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; • Our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; • Information systems failures and cyberattacks; • 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; and • Other factors described in our Annual Report on Form 10-K for the year ended December 31, 2021 under Item 1A, “Risk Factors.” Purchase price multiple rapidly declining on strength of business and synergy capture (1) Financial information is pro forma to include a full year of Clariant Color acquisition 11.9% 16.2% 2019PF 2021 EBITDA Margins SPECIALTY TRANSFORMATION 46% 66% 86% 100% 0% 40% 60% 80% 100% 2005 2010 2015 2021 2022 PF % o f A dj us te d EB IT D A(1 ) JVs Distribution Performance Products & Solutions Specialty (1) Adjusted EBITDA is EBITDA excluding corporate costs and special items (2) Pro forma for the acquisition of Dyneema® and potential divestiture of Distribution (2) 38 CULTURE AND PEOPLE 39 OUR SPECIALTY JOURNEY CONTINUES 40 • Dyneema® brings leading technology and brand with the World’s Strongest Fiber™, deep history of application development and strong management team focused on specialty applications • Dyneema® transaction is aligned with our previously stated acquisition goal of expanding our composites and fiber capabilities • Similar to our other technology expansion acquisitions, Dyneema® allows us to leverage our invest-to-grow strategy • We plan to explore a possible sale of our Distribution business. Our free cash flow supports shareholder value creation through investing in R&D for organic growth, completing bolt-on acquisitions, and returning cash to shareholders via our dividend program and opportunistic share repurchases. 44 1.

 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 closure of manufacturing facilities;  The timing of closings and shifts of production to new facilities related to asset realignments and any unforeseen loss of customers and/or disruptions of service or quality caused by such closings and/or production shifts;  Separation and severance amounts that differ from original estimates;  Amounts for non-cash charges related to asset write-offs and accelerated depreciation realignments of property, plant and equipment, that differ from original estimates;  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;  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 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;  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.  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. sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://www.mullerquaker.com/products/greek100/greek100-peach-and-passion-fruit&ei=-acYVZq7EIqwyASDjYL4CA&bvm=bv.89381419,d.cWc&psig=AFQjCNGNCQY1_dCN2RPLzxtap_Pu0omTXQ&ust=1427765484498432 POLYONE CORPORATION 25 2015 Revenue: $0.7 Billion At a Glance: Performance Products & Solutions 2015 Revenue by Industry Expanding Profits 5.5% 6.9% 3.8% 3.6% 5.5% 4.3% 6.3% 7.2% 7.7% 8.3% 12-14% 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 YTD 2020 Operating Income % of Sales Platinum Vision 11.6% B & C 31% Transportation 19% W & C 16% Industrial 13% Appliances 7% Consumer 5% Packaging 5% E & E 3% Healthcare 1% United States 79% Canada 14% Latin America 5% Asia 2% Key Applications POLYONE CORPORATION 26 2015 Revenue: $1.0 Billion At a Glance: Distribution Key Suppliers ROIC Expanding Profits 2.6% 3.0% 3.5% 4.0% 4.6% 5.6% 6.4% 5.9% 6.1% 6.6% 6.5-7.5% 6.6% 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 YTD 2020 Operating Income % of Sales Platinum Vision 15% 53% 2006 3Q 2016 Transportation 24% Healthcare 23% Industrial 16% Consumer 13% E & E 6% Appliances 6% W & C 4% Packaging 4% B & C 4% http://www.polyone.com/Pages/VariationRoot.aspx 27 POLYONE CORPORATION Application Examples POLYONE CORPORATION 28 Luxury Packaging with Gravitech Density Modified Polymers  Impart weight, sound and metallic finish to caps and closures for cosmetics and spirits applications  Elevate quality and prestige perceptions among high-end consumers  Eliminate time and cost associated with secondary operations and assembly POLYONE CORPORATION 29 Medical Device Housings with Chemically Resistant Engineered Polymers  Durable, long-lasting products stand up to the most aggressive disinfectants  Minimize environmental stress cracking and discoloration  One of the broadest medically approved polymer and colorant portfolios POLYONE CORPORATION 30 Printed Circuit Boards with Thermally Conductive Polymers  Replaces metal by etching circuit designs into thermally conductive plastic  Maintains heat transfer and cooling capabilities of metals  Reduces both weight and cost  Increases the lifetime and reliability of electronic systems POLYONE CORPORATION 31 Color & Design Services  Greater control of color development and supply chain  Work across entire design process from concept to commercialization  Inspire creativity in the use of polymer materials, colors and effects  Innovative brand differentiation  Faster development timelines POLYONE CORPORATION 32 Outdoor Applications  Leading provider of high performance specialty materials for the recreational and sports & leisure industry  Well positioned across all segments to address market needs  Metal to Polymer Conversion  Lightweighting  Thermal Management  Impact Performance Source: Outdoor Industry Association POLYONE CORPORATION 33 Fiber Colorants Solutions for clothing, apparel, footwear, automotive & sporting goods  ColorMatrix Fiber Colorant Solutions  Proprietary advanced liquid color formulations and equipment enable greater efficiency and productivity  Eliminates aqueous dyeing and its associated wastewater treatment  Solid Color Concentrates  Extrusion-spun fibers colored via solid masterbatch POLYONE CORPORATION 34  Improve performance and reduce cost through light-weighting, reduced waste, faster cycle times and extended shelf life  Aligned with megatrend of facing climate and resource challenges:  Sustainability benefits include lower package weight and improved recyclability of package at end of use Shelf-life extension Greater product consistency Recyclability and reduced carbon footprint Color and Special Effects Weight reduction Enhanced product aesthetics High heat resistance Preservative Technology POLYONE CORPORATION 35 Metal Replacement Solutions  Replaces metal in LED lighting  Extends LED durability and life span eliminating hot spots  Greater design flexibility with fewer parts  Weight reduction  Simplifies manufacturing and lowers total production cost POLYONE CORPORATION 36 High-Barrier Packaging Containers  Capability to extrude up to 13 layers  Strong oxygen and moisture vapor transmission protection  Can be made symmetrical or asymmetrical to meet customized needs of broad variety of applications  Barrier protection and superior sensory properties 1 Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except per share data) Below is a reconciliation of non-GAAP financial measures to the most directly comparable measures calculated and presented in accordance with U.S. Special items include charges related to specific strategic initiatives or financial restructuring such as: consolidation of operations; debt extinguishment costs; costs incurred directly in relation to acquisitions or divestitures; employee separation costs resulting from personnel reduction programs, plant phase-in costs, executive separation agreements; asset impairments; mark-to-market adjustments associated with actuarial gains and losses on pension and other post-retirement benefit plans; environmental remediation costs, fines, penalties and related insurance recoveries related to facilities no longer owned or closed in prior years; gains and losses on the divestiture of operating businesses, joint ventures and equity investments; gains and losses on facility or property sales or disposals; results of litigation, fines or penalties, where such litigation (or action relating to the fines or penalties) arose prior to the commencement of the performance period; one-time, non-recurring items; the effect of changes in accounting principles or other such laws or provisions affecting reported results; and tax adjustments.

Unfilled TPEs developed to deliver optical clarity for a wide variety of applications from pet toys to cap liners Unfilled, translucent TPE series developed for wide range of applications and offering good colorability Versaflex™ PF formulations are specially developed for the manufacture of co-extruded surface protective films

With a network of advanced manufacturing facilities across Europe, Middle East and Africa, we can quickly develop formulations to satisfy the demands of your applications. Avient Innovation Centers are designed to facilitate collaborative innovation, accelerate application development and increase speed-to-market. Avient Innovation Centers are designed to facilitate collaborative innovation, accelerate application development and increase speed-to-market.

NEW Colorant Chromatics™ Metallic Effect Pre-Colored Sulfone Formulations: new pre-colored sulfone solutions with metallic effects, including gold, bronze, and silver, developed to emulate finishes that use metal without the weight and secondary processing but have the benefits of sulfone polymers, including ultra-high temperature and chemical resistance. Especially useful for consumer goods, aerospace, and healthcare, they support extended shelf life, multiple sterilizations, lower energy requirements, and lower volatile organic compound (VOC) emissions, aligning with Avient’s commitment to developing sustainable solutions that can appear luxurious. RECENTLY LAUNCHED reSound™ REC AF 7210 TPEs: specifically developed for automotive interior applications, these new TPE grades from Avient contain 51-59% recycled content, with a minimum of 37% of that content from PCR sources, including closed-loop feedstock.

Discover FEA capabilities and the benefits for new product development. Long Fiber Technologies Application Development Avient long fiber technologies application development center bulletin highlighting services including design support, material validation, simulation support, and in-house prototyping

The 6-ply laminate is developed for this load, with two-thirds of the layers oriented in the 0-degree direction. By combining unidirectional composite tapes into multi-axial, multi-layered laminates at specified fiber volumes, CFRTP materials can be developed to provide customized mechanical properties to meet specific performance targets. By combining unidirectional composite tapes into multi-axial, multi-layered laminates at specified fiber volumes, CFRTP materials can be developed to provide customized mechanical properties to meet specific performance targets.  

Versaflex™ PF formulations are specially developed for the manufacture of co-extruded surface protective films Read how technical expertise and broad TPE portfolio shortened the development timeline and delivered a durable performance Sync design with manufacturability: Learn about how Avient Design can help simplify your new product development process