Buyer acknowledges that Seller has furnished to Buyer Safety Data Sheets, which include warnings together with safety and health information concerning the Product and/or the containers for such Product. No statement of agreement, oral or written, made before or at the formation of the contract shall vary or modify the written terms hereof, and neither party shall claim any amendment, modification or release from any provision hereof unless such change occurs in a writing signed by the other party and specifically identifying it as an amendment to the contract. No modification or addition to the contract shall occur by the acknowledgment or acceptance by Seller of a purchase order, acknowledgment, release or other form submitted by Buyer containing additional or different terms or conditions. 20.

Buyer acknowledges that Seller has furnished to Buyer Safety Data Sheets, which include warnings together with safety and health information concerning the Product and/or the containers for such Product. No statement of agreement, oral or written, made before or at the formation of the Contract shall vary or modify the written terms hereof, and neither party shall claim any amendment, modification or release from any provision hereof unless such change occurs in a writing signed by the other party and specifically identifying it as an amendment to the Contract. No modification or addition to the Contract shall occur by the acknowledgment or acceptance by Seller of a purchase order, acknowledgment, release or other form submitted by Buyer containing additional or different terms or conditions. 20.

Buyer acknowledges that Seller has furnished to Buyer Safety Data Sheets, which include warnings together with safety and health information concerning the Product and/or the containers for such Product. No statement of agreement, oral or written, made before or at the formation of the contract shall vary or modify the written terms hereof, and neither party shall claim any amendment, modification or release from any provision hereof unless such change occurs in a writing signed by the other party and specifically identifying it as an amendment to the contract. No modification or addition to the contract shall occur by the acknowledgment or acceptance by Seller of a purchase order, acknowledgment, release or other form submitted by Buyer containing additional or different terms or conditions. 20.

Buyer acknowledges that Seller has furnished to Buyer Safety Data Sheets, which include warnings together with safety and health information concerning the Product and/or the containers for such Product. No statement of agreement, oral or written, made before or at the formation of the contract shall vary or modify the written terms hereof, and neither party shall claim any amendment, modification or release from any provision hereof unless such change occurs in a writing signed by the other party and specifically identifying it as an amendment to the contract. No modification or addition to the contract shall occur by the acknowledgment or acceptance by Seller of a purchase order, acknowledgment, release or other form submitted by Buyer containing additional or different terms or conditions. 20.

Specifically, this includes applications such as printers, scanners, lubricated bearings and gears, pulley mechanisms, and conveyor systems for automotive sunroofs, seat mechanisms, and mirror sliding parts. 

Reconciliation to condensed $ Millions EPS (in $) $ Millions EPS (in $) Net (loss) income attributable to Avient common shareholders (20.2) (0.22) 49.4 0.54 Special items, after-tax 75.7 0.82 5.5 0.06 Amortization expense, after-tax 14.5 0.16 14.9 0.16 Adjusted net income / EPS 70.0 0.76 69.8 0.76 Per share amounts may not recalculate from figures present herein due to rounding 11 Reconciliation to EBITDA and Adjusted EBITDA $ Millions $ Millions Net (loss) income – GAAP (19.9) 49.7 Income tax (benefit) expense (6.7) 16.8 Interest expense, net 26.9 26.6 Depreciation & amortization 45.3 44.3 EBITDA 45.6 137.4 Special items, before tax 101.2 6.2 Interest expense included in special items (1.7) - Depreciation & amortization included in special items (0.4) (0.5) Adjusted EBITDA 144.7 143.1 Adjusted EBITDA as a percent of sales 17.5% 17.3% PAGE 1 OF 3 Copyright © . 2025 30 Reconciliation of Non-GAAP financial measures Reconciliation to EBITDA and Adjusted EBITDA $ Millions $ Millions Sales Color, Additives and Inks 519.7 515.3 Specialty Engineered Materials 308.4 314.4 Corporate (1.5) (0.7) Sales 826.6 829.0 Operating income Color, Additives and Inks 78.6 74.8 Specialty Engineered Materials 47.1 53.4 Corporate (125.0) (34.2) Operating income 0.7 94.0 Depreciation and amortization Color, Additives and Inks 21.7 21.9 Specialty Engineered Materials 21.5 19.6 Corporate 2.1 2.8 Depreciation and amortization 45.3 44.3 Earnings before interest, taxes, depreciation and amortization Color, Additives and Inks 100.3 96.7 Specialty Engineered Materials 68.6 73.0 Corporate (122.9) (31.4) Other expense, net (0.4) (0.9) EBITDA 45.6 137.4 Special items, before tax 101.2 6.2 Interest expense included in special items (1.7) - Depreciation and amortization included in special items (0.4) (0.5) Adjusted EBITDA 144.7 143.1 Adjusted EBITDA as a percent of sales Color, Additives and Inks 19.3% 18.8% Specialty Engineered Materials 22.2% 23.2% PAGE 2 OF 3 Copyright © . 2025 31 measures Reconciliation to condensed Three months ended March 31, 2023 $ Millions EPS (in $) Net income from continuing operations attributable to Avient common shareholders 20.8 0.23 Special items, after-tax 22.3 0.24 Amortization expense, after-tax 15.1 0.16 Adjusted net income / EPS 58.2 0.63 Reconciliation to EBITDA and Adjusted EBITDA Year ended December 31, 2024 $ Millions Net income – GAAP 170.7 Income tax expense 54.1 Interest expense 105.6 Depreciation & amortization 179.7 EBITDA 510.1 Special items, before tax 20.1 Interest expense included in special items (2.3) Depreciation & amortization included in special items (1.5) Adjusted EBITDA 526.4 Adjusted EBITDA as a percent of sales 16.2% PAGE 3 OF 3 Reconciliation to condensed Three months ended June 30, 2024 $ Millions EPS (in $) Net income attributable to Avient common shareholders 33.6 0.36 Special items, after-tax 21.8 0.24 Amortization expense, after-tax 14.8 0.16 Adjusted net income / EPS 70.2 0.76 Reconciliation to condensed Year ended December 31, 2024 $ Millions EPS (in $) Net (loss) income attributable to Avient common shareholders 169.5 1.84 Special items, after-tax 15.9 0.17 Amortization expense, after-tax 59.5 0.65 Adjusted net income / EPS 244.9 2.66 Per share amounts may not recalculate from figures present herein due to rounding Q4 2024 Earnings webcast Slide 1 Slide 2: Disclaimer Slide 3: Avient at a glance... Slide 4 Slide 5 Slide 6: Intersecting secular trends and high growth markets with our technologies to create product platforms of scale Slide 7: Strategic approach to drive sustainable growth Slide 8: Strategic approach to drive sustainable growth Slide 9: Strategic approach to drive sustainable growth Slide 10: Organic revenue growth with margin expansion Slide 11: Pathway to 20%+ adjusted EBITDA margins Slide 12: Disciplined capital allocation Slide 13: Avient is a compelling investment thesis Slide 14 Slide 15: Q1 2025 highlights Slide 16: Q1 2025 organic revenue growth - by region Slide 17: Playbook in current environment Slide 18: Color, Additives & Inks – Q1 2025 performance Slide 19: Specialty Engineered Materials – Q1 2025 performance Slide 20: Global reach with a local touch Slide 21 Slide 22: 2025 financial guidance unchanged... Slide 23 Slide 24: Avient 2024 sales Slide 25: Color, Additives & Inks Slide 26: Specialty Engineered Materials Slide 27: Avient 2024 regional sales, by end market Slide 28: Raw material basket Slide 29: Reconciliation of Non-GAAP financial measures (UNAUDITED) Slide 30: Reconciliation of Non-GAAP financial measures (UNAUDITED) Slide 31: Reconciliation of Non-GAAP financial measures (UNAUDITED)

PolyOne �Investor Presentation Slide Number 2 Slide Number 3 Slide Number 4 Slide Number 5 Slide Number 6 Slide Number 7 Slide Number 8 Slide Number 9 Slide Number 10 Slide Number 11 Slide Number 12 Slide Number 13 Slide Number 14 Slide Number 15 Slide Number 16 Slide Number 17 Slide Number 18 Slide Number 19 Slide Number 20 Slide Number 21 Slide Number 22 Slide Number 23 Slide Number 24 Slide Number 25 Slide Number 26 Slide Number 27 Slide Number 28 Slide Number 29 Slide Number 30 Slide Number 31 Slide Number 32 Investor Presentation - March 2018 r4.pdf Investor Presentation - March 2018

Examples include Residual Risk Reduction (R3), which incorporates behavioral safety, improvements to safety leadership, various safety suggestion mechanisms, internal and external audit systems, and Global Safety Days. Added during processing, Hydrocerol is heat activated and releases gas to form a cellular foam structure, keeping the outer skin solid without voids. Planet—Community Service Operational Safety, Emergency Preparedness & Response Process Safety Incidents Count (PSIC), Process Safety Total Incident Rate (PSTIR), and Process Safety Incident Severity Rate (PSISR) RT-CH-540a.1 1.

Human Health & Safety Learn more about our solid solution, Cesa™ Non-PFAS Process Aid for Extrusion, and our Colorant Chromatics™ Evoluscend™ Non-PFAS High-Temperature Mold Release Additive. Colorant Chromatics™ Evoluscend™ Non-PFAS High-Temperature Mold Release Additive

Safety Data Sheets Safety Data Sheets Enables effective package separation and improve manufacturing operations such as mold release during thermoforming and packaging pick and place operations (Chinese language version)