Natural gas and raw materials costs represent a substantial part of our manufacturing costs. Shipping and Handling Costs Shipping and handling costs are included in cost of sales. The RIFS costs are exclusive of any costs that may ultimately be required to remediate the lower Passaic River area being studied or costs associated with natural resource damages that may be assessed.

This is due to the inherent difficulty of forecasting the timing and amount of certain items, such as, but not limited to, restructuring costs, environmental remediation costs, acquisition-related costs, and other non-routine costs. S EC O N D Q UART ER 2022 RE S U LTS $122 $134 $0.87 $0.98 Q2 2022 PERFORMANCE (TOTAL COMPANY) 4 Sales Adjusted Operating Income $1,235 $1,302 + 5% Adjusted EPS + 10% + 13% (in millions) (in millions) (+ 10% excluding FX) (+ 16% excluding FX) (+ 20% excluding FX) Q2 2022 SEGMENT PERFORMANCE 5 CAI $624 $649 ($ in millions) SEM Distribution $86 $94 + 4% + 9% $404 $443 $24 $27 + 10% + 13% (1) $241 $244 $37 $37 + 1% Flat (+ 10% excluding FX) (+ 16% excluding FX) (+ 6% excluding FX) (+ 3% excluding FX) Q2 2021 $1,235 $122 Sustainable Solutions 17 7% 7 Healthcare 23 14% 5 Composites (ex Outdoor High Performance) 10 20% 4 Growth in Asia / LATAM 5 3% 1 Other 69 11% 5 Sub-total $1,359 10% $144 Outdoor High Performance Impact (9) (5) Wage Inflation and Overtime (7) Other Supply Chain Costs (2) Clariant Color Integration Synergies 7 Incentives, Other Employee Costs 4 FX (48) (7) Q2 2022 $1,302 5% $134 Q2 2022 SALES AND OPERATING INCOME (TOTAL COMPANY) 6 Sales Growth Rate Operating Income$ millions EBITDA Q2 EBITDA BRIDGE 7 Price increases more than offsets raw material and supply chain impacts Q2 2021 $ 159 Demand (29) $ millions CAI: Price / Mix 87 Inflation (58) SEM: Price / Mix 36 Inflation (24) Distribution: Price / Mix 45 Inflation (41) Net Price Benefit 45 Wage Inflation and Overtime (7) Other Supply Chain Costs (2) Clariant Color Integration Synergies 7 Incentives, Other Employee Costs 4 FX (7) Q2 2022 $ 170 China Lockdowns / Russia Impact $ (14) Outdoor High Performance (5) Transportation (5) 8 Q2 '21 Adjusted EPS 0.87$ Color, Additives and Inks 0.11 Specialty Engineered Materials 0.01 Distribution 0.03 Corporate Costs 0.01 F/X (0.05) Segment OI 0.11$ Interest Expense 0.03 Tax Rate (0.03) Q2 '22 Adjusted EPS 0.98$ Q2 EPS BRIDGE Key Updates • Provided progress on 2030 Sustainability Goals • Emphasized commitment to U.N. D I S T R IBU T I O N) 18 END-MARKET FOCUS FOR NEW INNOVATION Semiconductors Robotics Healthcare Interconnected disruptive markets with massive innovation needs 19 APPENDIX Performance Additives Pigments TiO2 Dyestuffs 3%Polyethylene Nylon 6% Polypropylene Other Raw Materials 30% Styrenic Block Copolymer ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials 22 • Significant raw material price inflation and tight inventory continued in Q2 2022, although at a slightly lesser rate compared to the prior quarter o For Q2 2022, the average cost of key hydrocarbon based materials was up 15%, roughly the same as the average cost of non- hydrocarbon based materials

In particular, these 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. This is due to the inherent difficulty of forecasting the timing and amount of certain items, such as, but not limited to, restructuring costs, environmental remediation costs, acquisition-related costs, and other non- routine costs. Whether an additional line at an existing manufacturing plant, or a new facility in a growing region, we ramp-up quickly and cost-efficiently. 30 Capex / Revenue 2022E (%) AVIENT IS ASSET LIGHT Avient Specialty Other 4 7 7 7 ( xc l.

Natural gas and raw materials costs represent a substantial part of our manufacturing costs. Shipping and Handling Costs Shipping and handling costs are included in cost of sales. These costs are presented within Debt extinguishment costs in our Consolidated Statements of Income.

Natural gas and raw materials costs represent a substantial part of our manufacturing energy costs. Cost of Sales Cost of sales as a percentage of sales decreased from 83.8% in 2011 to 81.1% in 2012. Shipping and Handling Costs Shipping and handling costs are included in cost of sales.

This, in turn, raises productivity and reduces system costs. Commercial Improvements Lower part costs improve margins and increase competitive edge. In addition, production costs increase, as rubber parts typically require deflashing and assembly using adhesives.

This is due to the inherent difficulty of forecasting the timing and amount of certain items, such as, but not limited to, environmental remediation costs, mark-to-market adjustments associated with benefit plans, acquisition related costs, and other non-routine costs. Three Months Ended March 31, 2024 2023 Reconciliation to Condensed Consolidated Statements of Income $ EPS $ EPS Net income from continuing operations attributable to Avient shareholders $ 49.4 $ 0.54 $ 20.8 $ 0.23 Special items, after-tax (Attachment 3) 5.5 0.06 22.3 0.24 Amortization expense, after-tax 14.9 0.16 15.1 0.16 Adjusted net income / EPS $ 69.8 $ 0.76 $ 58.2 $ 0.63 7 Attachment 2 Avient Corporation Condensed Consolidated Statements of Income (Unaudited) (In millions, except per share data) Three Months Ended March 31, 2024 2023 Sales $ 829.0 $ 845.7 Cost of sales 550.8 598.1 Gross margin 278.2 247.6 Selling and administrative expense 184.2 190.5 Operating income 94.0 57.1 Interest expense, net (26.6) (28.8) Other (expense) income, net (0.9) 0.7 Income from continuing operations before income taxes 66.5 29.0 Income tax expense (16.8) (7.7) Net income from continuing operations 49.7 21.3 Loss from discontinued operations, net of income taxes — (0.9) Net income 49.7 20.4 Net income attributable to noncontrolling interests (0.3) (0.5) Net income attributable to Avient common shareholders $ 49.4 $ 19.9 Earnings (loss) per share attributable to Avient common shareholders - Basic: Continuing operations $ 0.54 $ 0.23 Discontinued operations — (0.01) Total $ 0.54 $ 0.22 Earnings (loss) per share attributable to Avient common shareholders - Diluted: Continuing operations $ 0.54 $ 0.23 Discontinued operations — (0.01) Total $ 0.54 $ 0.22 Cash dividends declared per share of common stock $ 0.2575 $ 0.2475 Weighted-average shares used to compute earnings per common share: Basic 91.2 91.0 Diluted 92.0 91.8 8 Attachment 3 Avient Corporation Summary of Special Items (Unaudited) (In millions, except per share data) Special items (1) Three Months Ended March 31, 2024 2023 Cost of sales: Restructuring costs, including accelerated depreciation $ 3.6 $ (6.6) Environmental remediation costs (4.0) (1.4) Impact on cost of sales (0.4) (8.0) Selling and administrative expense: Restructuring and employee separation costs (0.7) (11.3) Legal and other (3.5) (4.4) Acquisition related costs (1.6) (3.4) Impact on selling and administrative expense (5.8) (19.1) Impact on operating income (6.2) (27.1) Other income (loss), net — (0.2) Impact on income from continuing operations before income taxes (6.2) (27.3) Income tax benefit on above special items 1.4 6.9 Tax adjustments(2) (0.7) (1.9) Impact of special items on net income from continuing operations $ (5.5) $ (22.3) Diluted earnings per common share impact $ (0.06) $ (0.24) Weighted average shares used to compute adjusted earnings per share: Diluted 92.0 91.8 (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 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 These costs are included in Corporate.

This is due to the inherent difficulty of forecasting the timing and amount of certain items, such as, but not limited to, environmental remediation costs, mark-to-market adjustments associated with benefit plans, acquisition related costs, and other non-routine costs. Three Months Ended June 30, 2024 2023 Reconciliation to Condensed Consolidated Statements of Income $ EPS $ EPS Net income from continuing operations attributable to Avient shareholders $ 33.6 $ 0.36 $ 22.1 $ 0.24 Special items, after-tax (Attachment 3) 21.8 0.24 19.6 0.21 Amortization expense, after-tax 14.8 0.16 16.2 0.18 Adjusted net income / EPS $ 70.2 $ 0.76 $ 57.9 $ 0.63 Six Months Ended June 30, 2024 2023 Reconciliation to Condensed Consolidated Statements of Income $ EPS $ EPS Net income from continuing operations attributable to Avient shareholders $ 83.0 $ 0.90 $ 42.9 $ 0.47 Special items, after-tax (Attachment 3) 27.3 0.30 41.9 0.46 Amortization expense, after-tax 29.7 0.32 31.3 0.34 Adjusted net income / EPS $ 140.0 $ 1.52 $ 116.1 $ 1.27 8 Attachment 2 Avient Corporation Condensed Consolidated Statements of Income (Unaudited) (In millions, except per share data) Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Sales $ 849.7 $ 824.4 $ 1,678.7 $ 1,670.1 Cost of sales 592.1 583.7 1,142.9 1,181.8 Gross margin 257.6 240.7 535.8 488.3 Selling and administrative expense 185.1 178.4 369.3 368.9 Operating income 72.5 62.3 166.5 119.4 Interest expense, net (26.6) (29.4) (53.2) (58.2) Other (expense) income, net (0.9) (0.2) (1.8) 0.5 Income from continuing operations before income taxes 45.0 32.7 111.5 61.7 Income tax expense (11.2) (10.4) (28.0) (18.1) Net income from continuing operations 33.8 22.3 83.5 43.6 Loss from discontinued operations, net of income taxes — — — (0.9) Net income $ 33.8 $ 22.3 $ 83.5 $ 42.7 Net income attributable to noncontrolling interests (0.2) (0.2) (0.5) (0.7) Net income attributable to Avient common shareholders $ 33.6 $ 22.1 $ 83.0 $ 42.0 Earnings (loss) per share attributable to Avient common shareholders - Basic: Continuing operations $ 0.37 $ 0.24 $ 0.91 $ 0.47 Discontinued operations — — — (0.01) Total $ 0.37 $ 0.24 $ 0.91 $ 0.46 Earnings (loss) per share attributable to Avient common shareholders - Diluted: Continuing operations $ 0.36 $ 0.24 $ 0.90 $ 0.47 Discontinued operations — — — (0.01) Total $ 0.36 $ 0.24 $ 0.90 $ 0.46 Cash dividends declared per share of common stock $ 0.2575 $ 0.2475 $ 0.5150 $ 0.4950 Weighted-average shares used to compute earnings per common share: Basic 91.3 91.1 91.3 91.1 Diluted 92.2 91.9 92.0 91.9 9 Attachment 3 Avient Corporation Summary of Special Items (Unaudited) (In millions, except per share data) Special items (1) Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Cost of sales: Restructuring costs, including accelerated depreciation $ 0.2 $ (1.2) $ 3.8 $ (7.8) Environmental remediation costs (21.8) (13.0) (25.8) (14.4) Impact on cost of sales (21.6) (14.2) (22.0) (22.2) Selling and administrative expense: Restructuring and employee separation costs (2.8) (0.5) (3.5) (11.9) Legal and other (2.3) (6.4) (5.8) (10.6) Acquisition related costs (0.5) (0.7) (2.1) (4.2) Impact on selling and administrative expense (5.6) (7.6) (11.4) (26.7) Impact on operating income (27.2) (21.8) (33.4) (48.9) Interest expense, net - financing costs (1.0) — (1.0) — Other income (loss) 0.1 0.1 0.1 (0.1) Impact on income from continuing operations before income taxes (28.1) (21.7) (34.3) (49.0) Income tax benefit on above special items 7.0 5.5 8.4 12.4 Tax adjustments(2) (0.7) (3.4) (1.4) (5.3) Impact of special items on net income from continuing operations $ (21.8) $ (19.6) $ (27.3) $ (41.9) Diluted earnings per common share impact $ (0.24) $ (0.21) $ (0.30) $ (0.46) Weighted average shares used to compute adjusted earnings per share: Diluted 92.2 91.9 92.0 91.9 (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 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 These costs are included in Corporate.

Recently, these more flexible polyethylenes have seen use as low-cost rubber replacements for some non-demanding molded goods applications. Lower fabrication costs Lower per-piece finished part cost

In order to optimize its profit margins, the company sought to control system costs by avoiding secondary assembly and handling. Lower system costs = higher margins: By reducing waste from part deformation, the Avient TPE allowed the manufacturer to leverage efficient, fast 2K molding for system cost reduction. With OnFlex-S TPE, the company achieved system cost benefits that have made this product line a profitable one.