RISK PERCEPTION RISK TOLERANCE DECISION OR ACTION .56 Injury Rate 65% of sites worked injury-free 110% increase in consecutive days injury free in the last two years SAFETY FIRST 50% 0 70%20 43% Average number of risk assessments completed every day Reduction in lacerations since 2017 Reduction in ergonomic related injuries Automobile related injuries Reduction in acquisition injury rate 74424.indd main_3 3/16/20 12:25 PM Annual Report | 2019 4 With our focus on People, it has led to the creation and expansion of Employee Resource Groups (ERGs) at PolyOne to advance diversity and inclusion.

Prefer to buy sustainable products 44% Of consumers are purpose-driven, an all-time high Product-Driven 4% Brand-Driven 15% Value-Driven 37% Purpose-Driven 44% Drivers of Purchasing Decisions Avient Corporation 25 SUSTAINABLY-MARKETED PRODUCTS GROW 2X FASTER 110 120 130 140 150 160 2017 2018 2019 2020 2021 2022 Sustainably-Marketed Products vs.

We grew organic sales in each of the regions with both our Color, Additives and Inks and Specialty Engineered Materials segments growing at 3% and 6%, respectively, while expanding adjusted EBITDA margins 90 and 110 basis points, respectively, over 2023."

In the last two years, we achieved a 110% increase in consecutive injury free days, and reported an injury rate of 0.56 for 2019, far better than the industry average. Challenge Accepted. 2019 Sustainability Report Table of Contents Message from the CEO Message from the Governance and Corporate Responsibility Committee Sustainability Goals About Avient Historic Transformation Inspired Future Better Together: PolyOne and Clariant Masterbatch Who We Are What We Do: Material Science Revenue by Geography and End Market Where We Are: Global Locations Communities Counting on Avient Message from Avient’s VP of Sustainability Avient’s 4 Ps of Sustainability People Management Approach: EH&S Safety First Continuous Improvement Occupational Safety & Health Performance: Metrics and Monitoring Security Management Approach: Training and Development Career Training and Performance Feedback Operational and Commercial Excellence Training Leadership Development Programs Manager Training and Front-Line Engagement Talent Acquisition and Campus Recruiting Management Approach: Diversity & Inclusion Leading Change from the Top Workforce Demographics Associate Benefits Awards & Recognition Programs Health and Wellness A Great Place to Work Products Innovation: The Lifeblood of a Specialty Organization No Surprises PledgeSM How Our Products Enable Sustainability Our Solutions…In Action Management Approach: Product Stewardship Global Chemical Management Product Excellence Management Approach: Supplier Evaluation Strategic Partnerships and Alliances Planet Protecting Our Planet Energy, Greenhouse Gas (GHG) Emissions and Climate Change Eliminating Plastic Waste Earth Day Photo Contest Community Service Community Engagement Performance Performance Overview Sustainable Products Performance The Highest Ethical Standards Ethics Hotline and Reporting Enterprise Risk Management (ERM) Board of Directors Governance Policies & Guidelines Goals Sustainability Goals People and Planet Data and Metrics Indices GRI/SASB/TCFD Content Index Reconciliation of Non-GAAP Financial Measures forward arrow FC: Back Arrow Button 2: Page 2: Page 3: Page 4: Page 5: Page 6: Page 7: Page 8: Page 9: Page 10: Page 11: Page 12: Page 13: Page 14: Page 15: Page 16: Page 17: Page 18: Page 19: Page 20: Page 21: Page 22: Page 23: Page 24: Page 25: Page 26: Page 27: Page 28: Page 29: Page 30: Page 31: Page 32: Page 33: Page 34: Page 35: Page 36: Page 37: Page 38: Page 39: Page 40: Page 41: Page 42: Page 43: Page 44: Page 45: Page 46: Page 47: Page 48: Page 49: Page 50: Page 51: Page 52: Page 53: Page 54: Page 55: Page 56: Page 57: Page 58: Page 59: Page 60: Page 61: Page 62: Page 63: Page 64: Page 65: Page 66: Page 67: Page 68: Page 69: Page 70: Page 71: Page 72: Page 73: Page 74: Page 75: Page 76: Page 77: Page 78: Page 79: Page 80: Page 81: Page 82: Page 83: Page 84: Page 85: Page 86: Page 87: Page 88: Page 89: Page 90: Page 91: Page 92: Page 93: Page 94: Page 95: Page 96: Page 97: Page 98: Page 99: Page 100: Page 101: Page 102: Page 103: Page 104: Page 105: Page 106: Page 107: Page 108: Page 109: Page 110: forward arrow button 2: Page 2: Page 3: Page 4: Page 5: Page 6: Page 7: Page 8: Page 9: Page 10: Page 11: Page 12: Page 13: Page 14: Page 15: Page 16: Page 17: Page 18: Page 19: Page 20: Page 21: Page 22: Page 23: Page 24: Page 25: Page 26: Page 27: Page 28: Page 29: Page 30: Page 31: Page 32: Page 33: Page 34: Page 35: Page 36: Page 37: Page 38: Page 39: Page 40: Page 41: Page 42: Page 43: Page 44: Page 45: Page 46: Page 47: Page 48: Page 49: Page 50: Page 51: Page 52: Page 53: Page 54: Page 55: Page 56: Page 57: Page 58: Page 59: Page 60: Page 61: Page 62: Page 63: Page 64: Page 65: Page 66: Page 67: Page 68: Page 69: Page 70: Page 71: Page 72: Page 73: Page 74: Page 75: Page 76: Page 77: Page 78: Page 79: Page 80: Page 81: Page 82: Page 83: Page 84: Page 85: Page 86: Page 87: Page 88: Page 89: Page 90: Page 91: Page 92: Page 93: Page 94: Page 95: Page 96: Page 97: Page 98: Page 99: Page 100: Page 101: Page 102: Page 103: Page 104: Page 105: Page 106: Page 107: Page 108: Page 109: Page 110: Back Arrow Button 4:

In the last two years, we achieved a 110% increase in consecutive injury free days, and reported an injury rate of 0.56 for 2019, far better than the industry average. Challenge Accepted. 2019 Sustainability Report Table of Contents Message from the CEO Message from the Governance and Corporate Responsibility Committee Sustainability Goals About Avient Historic Transformation Inspired Future Better Together: PolyOne and Clariant Masterbatch Who We Are What We Do: Material Science Revenue by Geography and End Market Where We Are: Global Locations Communities Counting on Avient Message from Avient’s VP of Sustainability Avient’s 4 Ps of Sustainability People Management Approach: EH&S Safety First Continuous Improvement Occupational Safety & Health Performance: Metrics and Monitoring Security Management Approach: Training and Development Career Training and Performance Feedback Operational and Commercial Excellence Training Leadership Development Programs Manager Training and Front-Line Engagement Talent Acquisition and Campus Recruiting Management Approach: Diversity & Inclusion Leading Change from the Top Workforce Demographics Associate Benefits Awards & Recognition Programs Health and Wellness A Great Place to Work Products Innovation: The Lifeblood of a Specialty Organization No Surprises PledgeSM How Our Products Enable Sustainability Our Solutions…In Action Management Approach: Product Stewardship Global Chemical Management Product Excellence Management Approach: Supplier Evaluation Strategic Partnerships and Alliances Planet Protecting Our Planet Energy, Greenhouse Gas (GHG) Emissions and Climate Change Eliminating Plastic Waste Earth Day Photo Contest Community Service Community Engagement Performance Performance Overview Sustainable Products Performance The Highest Ethical Standards Ethics Hotline and Reporting Enterprise Risk Management (ERM) Board of Directors Governance Policies & Guidelines Goals Sustainability Goals People and Planet Data and Metrics Indices GRI/SASB/TCFD Content Index Reconciliation of Non-GAAP Financial Measures forward arrow FC: Back Arrow Button 2: Page 2: Page 3: Page 4: Page 5: Page 6: Page 7: Page 8: Page 9: Page 10: Page 11: Page 12: Page 13: Page 14: Page 15: Page 16: Page 17: Page 18: Page 19: Page 20: Page 21: Page 22: Page 23: Page 24: Page 25: Page 26: Page 27: Page 28: Page 29: Page 30: Page 31: Page 32: Page 33: Page 34: Page 35: Page 36: Page 37: Page 38: Page 39: Page 40: Page 41: Page 42: Page 43: Page 44: Page 45: Page 46: Page 47: Page 48: Page 49: Page 50: Page 51: Page 52: Page 53: Page 54: Page 55: Page 56: Page 57: Page 58: Page 59: Page 60: Page 61: Page 62: Page 63: Page 64: Page 65: Page 66: Page 67: Page 68: Page 69: Page 70: Page 71: Page 72: Page 73: Page 74: Page 75: Page 76: Page 77: Page 78: Page 79: Page 80: Page 81: Page 82: Page 83: Page 84: Page 85: Page 86: Page 87: Page 88: Page 89: Page 90: Page 91: Page 92: Page 93: Page 94: Page 95: Page 96: Page 97: Page 98: Page 99: Page 100: Page 101: Page 102: Page 103: Page 104: Page 105: Page 106: Page 107: Page 108: Page 109: Page 110: forward arrow button 2: Page 2: Page 3: Page 4: Page 5: Page 6: Page 7: Page 8: Page 9: Page 10: Page 11: Page 12: Page 13: Page 14: Page 15: Page 16: Page 17: Page 18: Page 19: Page 20: Page 21: Page 22: Page 23: Page 24: Page 25: Page 26: Page 27: Page 28: Page 29: Page 30: Page 31: Page 32: Page 33: Page 34: Page 35: Page 36: Page 37: Page 38: Page 39: Page 40: Page 41: Page 42: Page 43: Page 44: Page 45: Page 46: Page 47: Page 48: Page 49: Page 50: Page 51: Page 52: Page 53: Page 54: Page 55: Page 56: Page 57: Page 58: Page 59: Page 60: Page 61: Page 62: Page 63: Page 64: Page 65: Page 66: Page 67: Page 68: Page 69: Page 70: Page 71: Page 72: Page 73: Page 74: Page 75: Page 76: Page 77: Page 78: Page 79: Page 80: Page 81: Page 82: Page 83: Page 84: Page 85: Page 86: Page 87: Page 88: Page 89: Page 90: Page 91: Page 92: Page 93: Page 94: Page 95: Page 96: Page 97: Page 98: Page 99: Page 100: Page 101: Page 102: Page 103: Page 104: Page 105: Page 106: Page 107: Page 108: Page 109: Page 110: Back Arrow Button 4:

Fiber Technology Avient Corporation 107 We are breaking ground on a new innovation center adjacent to our manufacturing facility in Pune • Focused on investments in both R&D resource additions and capital investments • Platform development in new disruptive markets to support core business and strategy ISHA Avient Manufacturing Site, Pune, India India Innovation Center Innovative Sustainable Holistic Accelerator (ISHA) Avient Corporation 108 2021E 2022E 2023E 2024E 2025E $1.1B $1.6B Growth Through Innovation Avient Corporation 109 Total CAI and SEMWorld-Class Vitality Index % of revenue from products launched last five years 35% Revenue from new products Summary Jamie Beggs Avient Corporation 110 $442 $457 $580 $1.74 $1.93 $3.00 Full Year 2019 – 2021 Organic Growth (TOTAL COMPANY) Sales Adjusted EBITDA $3,981 $3,783 $4,750 + 19% Adjusted EPS (1) Financial information is pro forma to include a full year of Clariant Color acquisition (in millions) (in millions) (1)(1) + 31% + 72% Avient Corporation 111 2021 Sales Growth Summary Key Growth Drivers Segments (1) Financial information is pro forma to include a full year of Clariant Color business acquisition Sales Growth 2020 Proforma 3,783$ Sustainable Solutions 140 18% Healthcare 150 31% Composites 44 33% Growth in Asia / LATAM 103 21% Other 530 28% 2021 Estimated 4,750$ 26% Sales Growth 2020 Proforma 3,783$ Color, Additives & Inks 330 16% Specialty Engineered Materials 195 28% Distribution 495 45% Corporate & Eliminations (53) 2021 Estimated 4,750$ 26% Avient Corporation 112 Year–to–date EBITDA Bridge 2020 September YTD $ 339 Demand 132 EBITDA($ millions) (1) Financial information is pro forma to include a full year of Clariant Color business acquisition CAI: Price / Mix 96 Inflation (74) SEM: Price / Mix 61 Inflation (45) Distribution: Price / Mix 204 Inflation (195) Net Price Benefit 47 Supply Chain Disruptions (38) COVID Response Applications (11) Synergies 34 Incentives, Travel, FX, Other (48) 2021 September YTD $ 455 • Demand driven by growth in sustainable solutions, healthcare and consumer applications • Price increases have more than covered raw material and freight inflation impacts of $300M year- to-date compared to 2020 • Synergy capture on pace to achieve $52M in annual savings in 2021 Avient Corporation 113 $1,110 $3,000 Return on Invested Capital Avient Corporation 114 Invested Capital 2006 Current 11% Cost of Capital ROIC (after-tax) 0.1 0.1 0.2 0.5 0.6 0.7 0.8 0.9 0.9 1.0 1.0 11 12 13 14 15 16 17 18 19 20 21 44% 98% YTD 5 - YR 10 - YR 0.16 0.20 0.26 0.34 0.42 0.50 0.58 0.72 0.79 0.81 0.85 0.95 11 12 13 14 15 16 17 18 19 20 21 22 2.1x Q4 NET LEVERAGE ~$1Bn REPURCHASED OVER LAST 10 YEARS ~$450MM PAID OVER LAST 11 YEARS Creating Value for Shareholders Avient Corporation 115 Share Performance Dividends Share Repurchases Deleveraging 3.5x 2.1x Growing Dividend Cumulative Buybacks Net Leverage $B $ p r sh ar Total Shareholder Return ~$4.3Bn MARKET CAP INCREASE OVER LAST 10 YEARS (1) Share performance includes reinvested dividends and is as of December 2, 2021 (2) Financial information is pro forma to include a full year of Clariant Color acquisition (2) 528% Shaping a Sustainable Future… Avient Corporation 116 SUSTAINABLE SOLUTIONS $340 $930 2016 2021E Brand Owner Commitment 10 – 50 Percent of recycled plastic used 13% organic CAGR Avient Corporation 117 8-12% HEALTHCARE $225 $685 17,645 29,445 9% organic CAGR Source: BCC Research, Nov. 2020 11% CAGR Market for Medical Plastics (millions of LBs) Figures above include relevant Sustainable Solutions sales Avient Corporation 118 8-10% COMPOSITES $74 $260 2017 2021E 11% organic CAGR Figures above include relevant Sustainable Solutions sales Avient Corporation 119 5G Capacity and Demand Source: Mobile Experts: 5G Millimeter Wave 2019: ns e an C ap ac ity ( o. 10% CAGR ASIA AND LATIN AMERICA $210 $1,150 Weighted Avg.

FIGURE 32 - Bubbler (left) & Ba�e (Right) FIGURE 34 - Bubbler (left) & Baffle (right) FIGURE 35 - Series cooling line layout 25% - 75% Wall Thickness 10˚(soft materials) - 30˚(brittle materials) 110˚(brittle materials)- 140˚(soft materials) FIGURE 33 - Tunnel gate 18 Gravi-Tech Cooling Line Guidelines The rules for cooling line layouts are to keep the depth and pitch ratios constant throughout.

HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 61 Supporting Local Needs Worldwide in 2023: 110+ Communities served worldwide 3,000+ Associates engaged 60 NGOs and charity organizations supported $1.5M Donated 7,000+ Hours volunteered Sustainable Practices for a Better Future In 2023, Avient held the inaugural Sustainability Practices for a Better Future contest. Over 3,000 Avient associates participated, serving more than 110 communities and benefitting 60 non-profit and charity organizations around the world.

HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 61 Supporting Local Needs Worldwide in 2023: 110+ Communities served worldwide 3,000+ Associates engaged 60 NGOs and charity organizations supported $1.5M Donated 7,000+ Hours volunteered Sustainable Practices for a Better Future In 2023, Avient held the inaugural Sustainability Practices for a Better Future contest. Over 3,000 Avient associates participated, serving more than 110 communities and benefitting 60 non-profit and charity organizations around the world.

FIGURE 32 - Bubbler (left) & Ba�e (Right) FIGURE 34 - Bubbler (left) & Baffle (right) FIGURE 35 - Series cooling line layout 25% - 75% Wall Thickness 10˚(soft materials) - 30˚(brittle materials) 110˚(brittle materials)- 140˚(soft materials) FIGURE 33 - Tunnel gate 18 Gravi-Tech Cooling Line Guidelines The rules for cooling line layouts are to keep the depth and pitch ratios constant throughout.