 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. PolyOne Corporation Page 4 PolyOne Commodity to Specialty Transformation • Volume driven, commodity producer • Heavily tied to cyclical end markets • Performance largely dependent on non- controlling joint ventures 2000-2005 2006 - 2009 2010 – 2014 2015 and beyond • Steve Newlin appointed, Chairman, President and CEO • New leadership team appointed • Implementation of four pillar strategy • Focus on value based selling, investment in commercial resources and innovation to drive transformation • Substantial EPS growth from $0.13 to all-time high of $1.80 • Shift to faster growing, high margin, less cyclical end markets • Key acquisitions propel current and future growth, as well as margin expansion • Specialty mix expands to 65% of Operating Income – strongest mix of earnings in history • Accelerating growth • Deliver consistent double digit annual EPS growth • Maintain >35% vitality index • Pursue strategic acquisitions that expand specialty offerings and geographic breadth • Invest and grow current and next generation talent PolyOne Corporation Page 5 Building & 10% Electrical & 11% 9% Distribution 28% PP&S 52% 69% 13% 7% Asia 2014 Revenues: $3.8 Billion End Markets 2014 Revenues: $3.8 Billion PolyOne At A Glance $13 $31 $46 $46 $87 $96 $122 $195 $242 2006 2007 2008 2009 2010 2011 2012 2013 2014 Specialty Operating Income ($M) PolyOne Corporation Page 6 Old PolyOne *Operating Income excludes corporate charges and special items 2% 34% 43% 62% 65% 69% 0% 20% 40% 60% 80% 100% 2005 2008 2010 2013 2014 Q1 2015 2020 % o f O pe ra tin g In co m e* JV's Performance Products & Solutions Distribution Specialty 80%+ Specialty OI $5M $46M $87M $195M $242M $60M Mix Shift Highlights Specialty Transformation Transformation 2020 Platinum Vision Platinum Vision PolyOne Corporation Page 7 Confirmation of Our Strategy The World’s Premier Provider of Specialized Polymer Materials, Services and Solutions Specialization Globalization Operational Excellence Commercial Excellence PolyOne Corporation Page 8 -100% 0% 200% 300% 400% 500% 600% Strategy and Execution Drive Results $0.12 $0.27 $0.21 $0.13 $0.68 $0.82 $1.00 $1.31 $1.80 '06 '07 '08 '09 '10 '11 '12 '13 '14 ‘06-‘14 Adjusted EPS CAGR = 40% Adjusted EPS Share Price vs. Senior management uses operating income excluding special items, adjusted EPS, and working capital to assess performance and allocate resources because senior management believes that these measures are useful in understanding current profitability levels and that current levels may serve as a base for future performance.

Avient’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. That’s Avient. 21,000+ CUSTOMERS >75% ARE CUSTOMIZED SOLUTIONS TO UNIQUE SPECIFICATIONS of sales 18 AVIENT’S VALUE CREATION LEVERS 19 Exposure to high growth end markets Investment in commercial resources and innovation Strong free cash flow generation / capital deployment Clariant Masterbatch synergies COVID recovery Re-Rating: Current share price valuation Avient is poised for near-term and long-term shareholder value creation. 20 • 8% increase in sales drives 24% increase in adjusted EPS to $2.40 ($2.70 excluding step-up depreciation and amortization) as a result of continued growth in sustainable solutions and synergy capture • Clariant synergy capture ahead of schedule: $35M of savings planned from Clariant Masterbatch acquisition • Adjusted EBITDA of $510M – highest level in company history • Deleveraging ahead of schedule – 2.1x net debt to adjusted EBITDA by the end of 2021 2021 PROJECTIONS PEER COMPARISONS 21 As a specialty formulator, we don’t require significant capital investment, as compared to the base resin raw material suppliers we purchase from. Senior management also uses operating income before special items to assess performance and allocate resources because senior management believes that these measures are useful in understanding current profitability levels and how it may serve as a basis for future performance.

Avient'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. Examples include: • Dyneema®, the world’s strongest fiber™, enables unmatched levels of performance and protection for end-use applications, including ballistic personal protection, marine and sustainable infrastructure and outdoor sports • Unique technologies that improve the recyclability of products and enable recycled content to be incorporated, thus advancing a more circular economy • Light-weighting solutions that replace heavier traditional materials like metal, glass and wood, which can improve fuel efficiency in all modes of transportation and reduce carbon footprint • Sustainable infrastructure solutions that increase energy efficiency, renewable energy, natural resource conservation and fiber optic / 5G network accessibility Avient is certified ACC Responsible Care®, a founding member of the Alliance to End Plastic Waste and certified Great Place to Work®. Three Months Ended June 30, Six Months Ended June 30, 2023 2022 2023 2022 Sales: Color, Additives and Inks $ 524.5 $ 649.1 $ 1,061.5 $ 1,298.6 Specialty Engineered Materials 300.8 242.3 610.5 485.4 Corporate (0.9) (0.4) (1.9) (0.8) Sales $ 824.4 $ 891.0 $ 1,670.1 $ 1,783.2 Gross margin: Color, Additives and Inks $ 164.1 $ 193.4 $ 326.1 $ 385.5 Specialty Engineered Materials 91.5 66.0 185.4 134.4 Corporate (14.9) 1.5 (23.2) (4.6) Gross margin $ 240.7 $ 260.9 $ 488.3 $ 515.3 Selling and administrative expense: Color, Additives and Inks $ 96.1 $ 99.8 $ 192.5 $ 197.4 Specialty Engineered Materials 51.8 30.8 102.6 60.9 Corporate 30.5 30.2 73.8 54.7 Selling and administrative expense $ 178.4 $ 160.8 $ 368.9 $ 313.0 Operating income: Color, Additives and Inks $ 68.0 $ 93.6 $ 133.6 $ 188.1 Specialty Engineered Materials 39.7 35.2 82.8 73.5 Corporate (45.4) (28.7) (97.0) (59.3) Operating income $ 62.3 $ 100.1 $ 119.4 $ 202.3 Depreciation & amortization: Color, Additives and Inks $ 25.7 $ 25.8 $ 51.5 $ 51.9 Specialty Engineered Materials 19.9 7.6 41.1 15.5 Corporate 2.0 3.1 5.5 6.9 Depreciation & Amortization $ 47.6 $ 36.5 $ 98.1 $ 74.3 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 93.7 $ 119.4 $ 185.1 $ 240.0 Specialty Engineered Materials 59.6 42.8 123.9 89.0 Corporate (43.4) (25.6) (91.5) (52.4) Other income (expense), net (0.2) 1.6 0.5 1.0 EBITDA including special items $ 109.7 $ 138.2 $ 218.0 $ 277.6 Total Company special items in EBITDA 21.6 (0.2) 47.1 4.4 Total Company, EBITDA adjusted $ 131.3 $ 138.0 $ 265.1 $ 282.0 13 Attachment 7 Avient Corporation Reconciliation of Non-GAAP Financial Measures (Unaudited) (In millions, except per share data) Senior management uses gross margin before special items and operating income before special items to assess performance and allocate resources because senior management believes that these measures are useful in understanding current profitability levels and how it may serve as a basis for future performance.

Avient’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. Investing in Innovation — Specialty companies invest to grow, so we ensure our resources are concentrated on material science for high-growth end markets, poised for value creation in the long term. That’s Avient. 21,000+ CUSTOMERS >75% ARE CUSTOMIZED SOLUTIONS TO UNIQUE SPECIFICATIONS of sales 6 AVIENT’S VALUE CREATION LEVERS 7 Exposure to high growth end markets Investment in commercial resources and innovation Strong free cash flow generation / capital deployment Clariant Masterbatch synergies COVID recovery Re-Rating: Current share price valuation Avient is poised for near-term and long-term shareholder value creation.

Avient'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. Examples include: • Dyneema®, the world’s strongest fiber™, enables unmatched levels of performance and protection for end-use applications, including ballistic personal protection, marine and sustainable infrastructure and outdoor sports • Unique technologies that improve the recyclability of products and enable recycled content to be incorporated, thus advancing a more circular economy • Light-weighting solutions that replace heavier traditional materials like metal, glass and wood, which can improve fuel efficiency in all modes of transportation and reduce carbon footprint • Sustainable infrastructure solutions that increase energy efficiency, renewable energy, natural resource conservation and fiber optic / 5G network accessibility Avient is certified ACC Responsible Care®, a founding member of the Alliance to End Plastic Waste and certified Great Place to Work®. Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Sales: Color, Additives and Inks $ 486.5 $ 565.6 $ 1,548.0 $ 1,864.2 Specialty Engineered Materials 267.9 258.2 878.4 743.6 Corporate (0.7) (0.5) (2.6) (1.3) Sales $ 753.7 $ 823.3 $ 2,423.8 $ 2,606.5 Gross margin: Color, Additives and Inks $ 156.8 $ 161.3 $ 482.9 $ 546.8 Specialty Engineered Materials 78.3 66.9 263.7 201.3 Corporate (39.8) (32.8) (63.0) (37.4) Gross margin $ 195.3 $ 195.4 $ 683.6 $ 710.7 Selling and administrative expense: Color, Additives and Inks $ 92.3 $ 92.7 $ 284.8 $ 290.1 Specialty Engineered Materials 48.0 35.5 150.6 96.4 Corporate 20.7 26.6 94.5 81.3 Selling and administrative expense $ 161.0 $ 154.8 $ 529.9 $ 467.8 Operating income: Color, Additives and Inks $ 64.5 $ 68.6 $ 198.1 $ 256.7 Specialty Engineered Materials 30.3 31.4 113.1 104.9 Corporate (60.5) (59.4) (157.5) (118.7) Operating income $ 34.3 $ 40.6 $ 153.7 $ 242.9 Depreciation & amortization: Color, Additives and Inks $ 24.6 $ 24.2 $ 76.1 $ 76.1 Specialty Engineered Materials 20.5 12.9 61.6 28.4 Corporate 1.3 2.7 6.8 9.2 Depreciation & Amortization $ 46.4 $ 39.8 $ 144.5 $ 113.7 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 89.1 $ 92.8 $ 274.2 $ 332.8 Specialty Engineered Materials 50.8 44.3 174.7 133.3 Corporate (59.2) (56.7) (150.7) (109.5) Other income (expense), net 1.0 (32.3) 1.5 (31.3) EBITDA including special items $ 81.7 $ 48.1 $ 299.7 $ 325.3 Special items in EBITDA 41.0 71.2 88.1 75.6 Total Company, EBITDA adjusted $ 122.7 $ 119.3 $ 387.8 $ 400.9 13 Attachment 7 Avient Corporation Reconciliation of Non-GAAP Financial Measures (Unaudited) (In millions, except per share data) Senior management uses gross margin before special items and operating income before special items to assess performance and allocate resources because senior management believes that these measures are useful in understanding current profitability levels and how it may serve as a basis for future performance.

Examples include: • Unique technologies that improve the recyclability of products and enable recycled content to be incorporated, thus advancing a more circular economy • Light-weighting solutions that replace heavier traditional materials like metal, glass and wood, which can improve fuel efficiency in all modes of transportation and reduce carbon footprint • Sustainable infrastructure solutions that increase energy efficiency, renewable energy, natural resource conservation and fiber optic / 5G network accessibility Avient employs approximately 8,700 associates and is certified ACC Responsible Care®, a founding member of the Alliance to End Plastic Waste and certified Great Place to Work®. Avient'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. Three Months Ended December 31, Year Ended December 31, 2021 2020 2021 2020 Sales: Color, Additives and Inks $ 581.3 $ 525.8 $ 2,401.6 $ 1,502.9 Specialty Engineered Materials 228.2 190.6 918.9 708.8 Distribution 425.0 305.1 1,630.9 1,110.3 Corporate and eliminations (33.0) (24.5) (132.6) (79.9) Sales $ 1,201.5 $ 997.0 $ 4,818.8 $ 3,242.1 Gross margin: Color, Additives and Inks $ 164.5 $ 164.3 $ 727.5 $ 484.4 Specialty Engineered Materials 60.0 59.1 257.4 207.6 Distribution 36.5 32.4 155.8 124.0 Corporate and eliminations (7.9) (2.9) (41.1) (31.7) Gross margin $ 253.1 $ 252.9 $ 1,099.6 $ 784.3 Selling and administrative expense: Color, Additives and Inks $ 103.3 $ 106.8 $ 424.4 $ 303.6 Specialty Engineered Materials 31.2 28.7 125.4 113.2 Distribution 14.8 14.4 62.6 54.5 Corporate and eliminations 29.8 38.0 106.0 123.7 Selling and administrative expense $ 179.1 $ 187.9 $ 718.4 $ 595.0 Operating income: Color, Additives and Inks $ 61.2 $ 57.5 $ 303.1 $ 180.8 Specialty Engineered Materials 28.8 30.4 132.0 94.4 Distribution 21.7 18.0 93.2 69.5 Corporate and eliminations (37.7) (40.9) (147.1) (155.4) Operating income $ 74.0 $ 65.0 $ 381.2 $ 189.3 13 Attachment 7 Avient Corporation Reconciliation of Non-GAAP Financial Measures (Unaudited) (In millions, except per share data) Senior management uses gross margin before special items and operating income before special items to assess performance and allocate resources because senior management believes that these measures are useful in understanding current profitability levels and how it may serve as a basis for future performance.

Examples include: • Unique technologies that improve the recyclability of products and enable recycled content to be incorporated, thus advancing a more circular economy • Light-weighting solutions that replace heavier traditional materials like metal, glass and wood, which can improve fuel efficiency in all modes of transportation and reduce carbon footprint • Sustainable infrastructure solutions that increase energy efficiency, renewable energy, natural resource conservation and fiber optic / 5G network accessibility Avient employs approximately 8,400 associates and is certified ACC Responsible Care®, a founding member of the Alliance to End Plastic Waste and certified Great Place to Work®. Avient'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. Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Sales: Color, Additives and Inks $ 586.6 $ 493.8 $ 1,820.3 $ 977.1 Specialty Engineered Materials 233.6 174.1 690.7 518.2 Distribution 438.8 276.9 1,205.9 805.2 Corporate and eliminations (39.2) (20.3) (99.6) (55.4) Sales $ 1,219.8 $ 924.5 $ 3,617.3 $ 2,245.1 Gross margin: Color, Additives and Inks $ 172.1 $ 155.0 $ 563.0 $ 320.1 Specialty Engineered Materials 63.1 53.4 197.4 148.5 Distribution 39.9 30.8 119.3 91.6 Corporate and eliminations (19.7) (29.0) (33.2) (28.8) Gross margin $ 255.4 $ 210.2 $ 846.5 $ 531.4 Selling and administrative expense: Color, Additives and Inks $ 105.3 $ 104.5 $ 321.1 $ 196.8 Specialty Engineered Materials 31.4 28.7 94.2 84.5 Distribution 16.1 13.3 47.8 40.1 Corporate and eliminations 23.9 30.2 76.2 85.7 Selling and administrative expense $ 176.7 $ 176.7 $ 539.3 $ 407.1 Operating income: Color, Additives and Inks $ 66.8 $ 50.5 $ 241.9 $ 123.3 Specialty Engineered Materials 31.7 24.7 103.2 64.0 Distribution 23.8 17.5 71.5 51.5 Corporate and eliminations (43.6) (59.2) (109.4) (114.5) Operating income $ 78.7 $ 33.5 $ 307.2 $ 124.3 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 93.4 $ 76.8 $ 321.1 $ 171.3 Specialty Engineered Materials 39.6 32.2 127.0 86.7 Distribution 24.0 17.7 72.1 51.9 Corporate and eliminations (41.5) (56.7) (105.3) (108.3) Other income, net 1.4 1.5 4.1 12.6 EBITDA $ 116.9 $ 71.5 $ 419.0 $ 214.2 13 Attachment 7 Avient Corporation Reconciliation of Non-GAAP Financial Measures (Unaudited) (In millions, except per share data) Senior management uses gross margin before special items and operating income before special items to assess performance and allocate resources because senior management believes that these measures are useful in understanding current profitability levels and how it may serve as a basis for future performance.

HOME OUR CODE RESPECT FOR ALL HONESTY AT WORK INTEGRITY IN OUR BUSINESS CORPORATE SOCIAL RESPONSIBILITY RESOURCES مدونة قواعد السلوك مدونة قواعد السلوك الخاصة | 9 إدمان المخدرات نتحمل جميعًاً اتخاذ الخطوات المطلوبة لضمان عملنا في بيئة خالية من جميع آثار الكحول وكذلك العقاقير غير المشروعة وغيرها من المواد الخاضعة للرقابة. HOME OUR CODE RESPECT FOR ALL HONESTY AT WORK INTEGRITY IN OUR BUSINESS CORPORATE SOCIAL RESPONSIBILITY RESOURCES „المعلومات الجوهرية غير المخصصة للعامة” هي أي معلومات لا يشك الشخص العاقل في أهميتها في اتخاذ قرار استثماري لا يجب إفشاؤه للعامة. مدونة قواعد السلوك المسؤولية الاجتماعية المسؤولية الاجتماعية مدونة قواعد السلوك الخاصة | 29 https://www.avient.com/sites/default/files/2021-07/avient-human-rights-position-statement-updated-july-2021.pdf https://www.avient.com/sites/default/files/2021-07/avient-human-rights-position-statement-updated-july-2021.pdf جهات الاتصال الداخلية — موارد الأخلاقيات والامتثال تالية مباشرةًً: للاطلاع على المزيد من المعلومات حول المدونة أو توقعاتنا، اتصل بالموارد ال • Avient المشرف عليك أو أي مدير في • ممثل الموارد البشرية أو إدارة الموارد البشرية • مسؤول أخلاقيات الشركة • أي عضو من أعضاء إدارة الشؤون القانونية • الوظيفة التي تتمتع بقدر مناسب من الخبرة )على سبيل المثال، الشؤون المالية للشركة، ومراجع الحسابات الداخلية، وقسم التوريد( اتصل أو استخدم الخط الساخن للأخلاقيات في حالة: • إذا احتجت إلى مشورة أو كان لديك سؤال تطرحوه • إذا كانت لديك رغبة في طرح مشكلة ما أو شاغل يثير قلقك • ا إذا طرحت مشكلة أو أمر ما يشغل بالك ولم تكن راضيً • إذا لم تكن متأكدًا أين يمكنك التوجه للحصول على المعلومات • إذا لم تكن شاعراً بالارتياح من خلال استخدام أحد المصادر الأحرى المُدرجة في المدونة الخط الساخن للأخلاقيات متاح عالميًاً بأكثر من 20 لغة على مدار 24 ساعة في اليوم طوال أيام الأسبوع.

 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. 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 22 2016 Revenue: $0.7 Billion At a Glance: Performance Products & Solutions 2016 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 2020 Operating Income % of Sales Platinum Vision 11.1% B & C 30% Transportation 18% W & C 16% Industrial 16% Appliance 6% Consumer 5% Packaging 5% E & E 3% Healthcare 1% United States 78% Canada 16% Latin America 4% Asia 2% Key Applications POLYONE CORPORATION 23 2016 Revenue: $1.1 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% 6.4% 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2020 Operating Income % of Sales Platinum Vision 15% 51% 2006 2016 Transportation 24% Healthcare 22% Industrial 18% Consumer 15% Appliance 6% E & E 5% B & C 4% Packaging 4% W & C 2% http://www.polyone.com/Pages/VariationRoot.aspx 24 POLYONE CORPORATION Application Examples POLYONE CORPORATION 25 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 26  Eliminate costs by increasing pigment density  Enhance color performance without altering form and formulation  Increase design capabilities by reducing weight and layer thickness Optimize Color Usage with OnColor Super Concentrates POLYONE CORPORATION 27  Inhibit microbial growth on polymer surface  Enhance value or products and devices  Highly versatile concentrate with the ability to be incorporated into a wide variety of products Combat Bacteria Formation with WithStand Antimicrobial Technology POLYONE CORPORATION 28 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 29 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 30 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 31 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 32 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) Senior management uses comparisons of adjusted net income attributable to PolyOne common shareholders, adjusted earnings per share (EPS) attributable to PolyOne common shareholders and operating income before special items to assess performance and allocate resources because senior management believes that these measures are useful in understanding current profitability levels and that current levels may serve as a base for future performance.

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. Senior management uses adjusted operating income, adjusted EPS, and working capital to assess performance and allocate resources because senior management believes that these measures are useful in understanding current profitability levels and that current levels may serve as a base for future performance.