O P S ) 21 Sales Adjusted EBITDA $818 $823 2021 2022 + 1% Adjusted EPS + 8% - 3% (in millions) (in millions) (+ 9% excluding FX) (+ 18% excluding FX) (+ 5% excluding FX) Q3 EBITDA BRIDGE ( P R O F O R M A T O TA L C O M PA N Y ) 22 Price increases more than offset raw material and supply chain impacts $ millions CAI: 68Price / Mix (44)Inflation SEM: 41Price / Mix (26)Inflation 39Net Price Benefit (14)Wage and Energy Inflation 6Clariant Color Integration Synergies 14Incentives, Other Employee Costs (11)FX $137 Q3 2022   Adjusted EBITDA $ 142Q3 2021 (39)Demand Q3 2022 SEGMENT PERFORMANCE 23 CAI $587 $566 Sales ($ in millions) $93 $93 EBITDA SEM Pro Forma $326 $319 Sales $70 $62 EBITDA (+ 4% excluding FX) - 4% - 2% (+ 5% excluding FX) Flat (+ 7% excluding FX) - 11% (- 7% excluding FX) $500 $585 Cont.

Bergamid™ polymer formulations and GLS™ TPEs replace metal and provide comfort and usability for Swiss soldiers pocket knife Bergamid™ polymer formulations and GLS™ TPEs replace metal and provide comfort and usability for Swiss soldiers pocket knife

Sustainability Value Impact 2018 Sustainability Report 2 Sustainability Report | 2018 About PolyOne Message from the CEO 3 About Us: Vision and Values 4 Historic Transformation / Inspired Future 6 Our Sustainability Message What We Do / Where We Do It 8 Where We Are 10 Communities Counting on PolyOne 12 Sustainability @ PolyOne 14 PolyOne’s 4 Ps of Sustainability 15 People Safety First 17 Security 19 Talent Acquisition and Leadership Development 20 Career Training and Performance Feedback 21 Leadership Development Programs 22 Diversity & Inclusion 24 Associate Benefits 29 Awards & Recognition 30 Health & Wellness 31 A Great Place to Work 32 Products Innovation: The Lifeblood of a Specialty Organization 35 How Our Products Enable Sustainability 37 Mergers & Specialty Acquisitions 46 Our Solutions in Action: Product Case Studies 50 Product Stewardship & Excellence 56 Supplier Collaboration 58 Planet Environmental Stewardship 60 Energy & Emissions 62 Impact of LSS / Renewable Energy 64 Waste Management 66 Community Service 68 Community Engagement 70 Performance Performance Overview 73 Sustainable Products Performance 75 The Highest Ethical Standards 76 Enterprise Risk Management 79 Board of Directors 80 Appendix Environmental Data / GRI Content Index 81 Reconciliation of Non-GAAP Financial Measures 92 Contents Sustainability Report | 2018 3 At no greater time in the history of PolyOne has sustainability been such an influential force, and at the same time, a tremendous opportunity. NYMAX™ AND BERGAMID™ RECLAIMED NYLON FORMULATIONS offer high strength, durability and impact resistance, all while enabling landfill waste reduction of >21M pounds since 2016, by providing an alternative use for post-industrial reclaimed nylon*. Through our design expertise, deep material science resources, and the energy and passion of our associates, PolyOne is well placed to help organizations such as GV2020 achieve their goals and make the world a better place to live.” 70 Sustainability Report | 2018 Avon Lake, United States Our Avon Lake Community Service Team plans quarterly community service events for any associate to participate.

Louis, Missouri HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Goals & Metrics | Indices Sustainability Report | 2019 26 0 35 70 105 140 Talent Acquisition and Campus Recruiting Attracting top talent in all regions of the world is paramount for both meeting the current challenges our customers face, as well as building experience within Avient and our industry—to meet the needs of the future. GHG Emissions (MT) Greenhouse Gas Emissions (MT Scope 1 & 2 GHG) Greenhouse Gas Emissions Intensity (MT 1 & 2 GHG/ MT Production) 0 60,000 120,000 180,000 240,000 300,000 2016 2017 2018* 2019* .45 .40 .35 .30 .25 .20 .15 .10 .05 0 .43 .35 .38 .34 Total Energy (GJ) Energy Intensity (MWh/MT Production) Total Energy 0 200,000 400,000 600,000 800,000 1,000,000 2016 2017 2018 2019 1.10 1.00 .90 .80 .70 .60 .99 .86 .91 .85 *Excludes divested PP&S segment and is consistent with the GHG Protocol Corporate Accounting and Reporting Standard. HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Goals & Metrics | Indices Sustainability Report | 2019 70Sustainability Report | 2019 70 https://endplasticwaste.org/about/ https://endplasticwaste.org/about/ https://www.opcleansweep.org Earth Day Photo Contest To celebrate Earth Day this year, we challenged our Avient associates to share photos they have taken that depict and celebrate the Earth’s beauty.

Louis, Missouri HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Goals & Metrics | Indices Sustainability Report | 2019 26 0 35 70 105 140 Talent Acquisition and Campus Recruiting Attracting top talent in all regions of the world is paramount for both meeting the current challenges our customers face, as well as building experience within Avient and our industry—to meet the needs of the future. GHG Emissions (MT) Greenhouse Gas Emissions (MT Scope 1 & 2 GHG) Greenhouse Gas Emissions Intensity (MT 1 & 2 GHG/ MT Production) 0 60,000 120,000 180,000 240,000 300,000 2016 2017 2018* 2019* .45 .40 .35 .30 .25 .20 .15 .10 .05 0 .43 .35 .38 .34 Total Energy (GJ) Energy Intensity (MWh/MT Production) Total Energy 0 200,000 400,000 600,000 800,000 1,000,000 2016 2017 2018 2019 1.10 1.00 .90 .80 .70 .60 .99 .86 .91 .85 *Excludes divested PP&S segment and is consistent with the GHG Protocol Corporate Accounting and Reporting Standard. HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Goals & Metrics | Indices Sustainability Report | 2019 70Sustainability Report | 2019 70 https://endplasticwaste.org/about/ https://endplasticwaste.org/about/ https://www.opcleansweep.org Earth Day Photo Contest To celebrate Earth Day this year, we challenged our Avient associates to share photos they have taken that depict and celebrate the Earth’s beauty.

Flow Length, inches (cm) Series Injection Velocity, 3 in/s (8 cm/s) Injection velocity, 5 in/s (13 cm/s) DynaflexTM D 13-15 (33-38) 18-20 (46-51) DynaflexTM G 12-22 (30-56) 18-30 (46-70) VersaflexTM 9-16 (23-41) 13-26 (33-66) VersalloyTM 18-20 (46-51) 30-32 (76-81) VersollanTM 12-17 (30-43) 19-22 (48-56) *Spiral flow tests performed using a 0.0625" (1.6 mm) thick, 0.375" (9.5 mm) wide channel at 400˚F (204˚C). TPE mold temperatures of 70-120˚F (21-49˚C) are typical. TPE mold temperatures of 70-120˚F (21-49˚C) are typical.

Visit Our Sustainability Site for More Information LEARN MORE As a founding member of the Alliance to End Plastic Waste, Avient will collaborate to develop and implement solutions to end plastic waste with over 70 members across the value chain. Rania, India 70. cf_chl_jschl_tk__=pmd_3412acbd59c39f87411637add4665efb8a0aab18-1626893562-0-gqNtZGzNAg2jcnBszQe6 Global Giving Over 2,600 Avient associates participated in our inaugural Global Giving campaign, ser ving more than 100 communities and benefitting 70 non-profit and charity organizations around the world.

Richardson Executive Vice President, Chief Financial Officer PolyOne Corporation Page 15 Track Record of Accelerated Growth Total Revenue Adjusted EPS Adjusted EBITDA $2,061 $2,506 $2,709 $2,861 $3,771 2009 2010 2011 2012 2013 ($ in millions, except EPS ) $105 $179 $202 $255 $344 2009 2010 2011 2012 2013 $0.13 $0.68 $0.82 $1.00 $1.31 2009 2010 2011 2012 2013 PolyOne Corporation Page 16 $0.31 $0.44 $0.20 $0.30 $0.40 Q1 2013 Q1 2014 Adjusted EPS $42 $60 $20 $40 $60 Q1 2013 Q1 2014 Specialty Operating Income ($ millions) Q1 2014 Financial Highlights  Growth momentum accelerates driven by specialty platform  Specialty segments and Distribution achieve record results  All segments increase operating income compared to prior year  Revenue grew 25% versus Q1 2013 +43% +42% $57 $79 $30 $60 $90 Q1 2013 Q1 2014 Adjusted Operating Income ($ millions) +39% PolyOne Corporation Page 17 Commitment to Operational Excellence 81% 96% 2006 2013 16.2% 10.9% 2006 2013 On-Time Delivery Working Capital % of Sales 5.0% 31.0% 2006 2013 Percent of Associates Trained in LSS  Three consecutive years – CFO Magazine Best Working Capital Management Program in the chemical industry World’s Best Business Process Excellence Program in 2012*  95 certified Black Belts  211 certified Green Belts  422 Project Leaders World’s Best “Start-up Program” for Lean Six Sigma Deployment in 2009* *Both awards received from International Quality and Productivity Center PolyOne Corporation Page 18 Debt Maturities & Pension Funding – 3/31/14 Net Debt / EBITDA* = 1.9x $48 $317 $600 $0 $100 $200 $300 $400 $500 $600 $700 $800 2015 2020 2023 Debt Maturities As of March 31, 2014 ($ millions) Coupon Rates: 7.500% 7.375% 5.250% *TTM 12/31/2013 ** includes US-qualified pension plans only 60% 100% 20% 30% 40% 50% 60% 70% 80% 90% 100% 2008 2014 Pension Funding** As of March 31, 2014 PolyOne Corporation Page 19 Free Cash Flow and Strong Balance Sheet Fund Investment / Shareholder Return $0.16 $0.20 $0.24 $0.32 $0.10 $0.20 $0.30 $0.40 2011 2012 2013 2014 Annual Dividend  Expanding our sales, marketing, and technical capabilities  Targets that expand our: • Specialty offerings • End market presence • Geographic footprint • Operating Margin  Synergy opportunities  Adjacent material solutions  Repurchased 1.4 million shares in Q1 2014  Repurchased 6.4 million shares since April 2013  13.6 million shares are available for repurchase under the current authorization Organic Growth Acquisitions Share Repurchases Dividends  Investing in operational and LSS initiatives (including synergy capture)  Manufacturing alignment PolyOne Corporation Page 20 3.07 3.05 1.81 1.45 1.82 1.54 0.85 3.15 1.17 1.69 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 0.91 PolyOne Valuation Aspirations PEG Ratio Comparison Represents $38 of share price upside Avg = 1.96 PolyOne Corporation Page 21 Innovating for the Future Dr.

PY ( T O TA L C O M PA N Y ) $790 $719 2022 2023 $107 $114 2022 2023 Sales Adjusted EBITDA (in millions) $0.42 $0.52 2022 2023 Adjusted EPS (in millions) - 9% + 7% + 24% Sales Adjusted EBITDA Adjusted EPS 15 Q4 2023 SEGMENT PERFORMANCE 16 CAI $491 $459 Sales (in millions) $70 $84 EBITDA SEM $301 $260 Sales $55 $49 EBITDA - 7% - 14%+20% - 11% 2022 2023 (in millions) Q4 EBITDA BRIDGE ( T O TA L C O M PA N Y ) 17 $ millions CAI: Price / Mix 11 Deflation 14 SEM: Price / Mix 4 Deflation 9 Net Price Benefit 38 Cost Reductions 13 Wage Inflation (8) Other (2) Q4 2023 $114 Adjusted EBITDA Q4 2022 $ 107 Demand (34) • Demand was down, but less than in previous quarters, due to slowing pace of destocking • Positive net price benefit: o CAI – Pricing flat with favorable mix from uptick in packaging and consumer end markets and raw material deflation o SEM - Pricing flat with favorable mix from Composites and raw material deflation • Cost reductions primarily driven by reduced administrative costs and cost synergies 2 0 2 4 G U I D A N C E 2024 GUIDANCE Full Year 2024 Guidance Adjusted EBITDA $505 to $535 million Adjusted EPS $2.40 to $2.65 Interest Expense $105 to $110 million Adjusted Effective Tax Rate 23% to 25% Capital Expenditures ~$140 million 19 Q1 Adjusted EPS of $0.68 A P P E N D I X 21 Performance Additives 15% Pigments 13% TiO2 9% Dyestuffs 2% Polyethylene 10%Nylon 5% Polypropylene 4% Styrenic Block Copolymer 4% Other Raw Materials 38% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials RA W MATERIAL BASKET SEGMENT DATA U.S. & Canada 41% EMEA 36% Asia 18% Latin America 5% 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS Consumer 19% Packaging 23%Industrial 16% Building and Construction 9% Telecommunications 4% Energy 5% Defense 7% END MARKET REVENUE $2,007M $358M $1,138M $224M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $502M$3,143M (1) Transportation 10% Healthcare 7% 23 (1) Total company sales and adjusted EBITDA of $3,143M and $502M, respectively, include intercompany sales eliminations and corporate costs 2 0 2 3 R E V E N U E | $ 2 . 0 B I L L I O N US & Canada 34% EMEA 37% Asia 21% Latin America 8% END MARKET REGION 24 Packaging 34% Consumer 21% Healthcare 8% Industrial 15% Transportation 9% Building & Construction 10% Telecommunications 1% Energy 2% COLOR, ADDITIVES & INKS 2 0 2 3 R E V E N U E | $ 1 . 1 B I L L I O N US & Canada 52% EMEA 35% Asia 13% 25 Packaging 5% Consumer 16% Healthcare 6%Industrial 16% Transportation 12% Telecommunications 9% Energy 10% Defense 18% Building & Construction 8% END MARKET REGION SPECIALTY ENGINEERED MATERIALS Packaging 32% Consumer 26% Healthcare 9% Industrial 13% Building & Construction 6% Telecommunications 2% Energy 2% Defense 1% Asia (18% of sales) Transportation 9% 2 0 2 3 AV I E N T R E G I O N A L S A L E S Packaging 25% Consumer 13% Healthcare 5% Industrial 18% Building & Construction 9% Energy 5% Defense 8% EMEA (36% of sales)Transportation 13% Packaging 13% Consumer 22% Healthcare 10% Industrial 16% Building & Construction 12% Energy 6% Defense 8% US & Canada (41% of sales) Transportation 9% Packaging 59% Consumer 22% Healthcare 2% Industrial 8% Building & Construction 4% LATAM (5% of sales) Transportation 5% Telecommunications 4% Telecommunications 4% 26 B Y E N D M A R K E T Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) Senior management uses comparisons of adjusted net income from continuing operations attributable to Avient shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to Avient shareholders, excluding special items, to assess performance and facilitate comparability of results.

Leverage PolyOne’s global reach Phase 1 Phase 2 Phase 3 18-20% operating margins Invest in commercial resources I N V E S T - T O - G R O W P R O O F O F P E R F O R M A N C E PolyOne Corporation 25 Commercial Resources Operating Income ($ in millions) Operating Margins 243 340 At Acquisition Today $36 $96 At Acquisition Today 11% 20% At Acquisition Today Established Acquisitions (> 7 years) + 40% + 165% + 900 bps I N V E S T - T O - G R O W D R I V I N G T H E F U T U R E PolyOne Corporation 26 Commercial Resources Operating Income ($ in millions) Operating Margins 138 181 251 At Acquisition Today Goal $23 $25 $70 At Acquisition Today Goal 7% 8% 18-20% At Acquisition Today Goal Recent Acquisitions PolyOne Corporation 27 Average Company Size # of Possibilities Rationale $200M • • • S T R O N G P I P E L I N E D R I V E N B Y F R A G M E N T E D M A R K E T $0 $150 $300 $450 $600 $750 $900 2011 2012 2013 2014 2015 2016 2017 2018 $890M R E T U R N I N G C A S H T O S H A R E H O L D E R S O V E R $ 1 . 2 B I L L I O N S I N C E 2 0 1 1 PolyOne Corporation $0.16 $0.20 $0.24 $0.32 $0.40 $0.48 $0.54 $0.70 $0.78 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 3-Year Dividend Plan Cumulative Share Repurchases Increasing Annual Dividend 28 6.3% 14.1% 16-17% 2009 2018 Updated Expectations R O I C D R I V E S S H A R E H O L D E R R E T U R N PolyOne Corporation 29 PolyOne Corporation 30 W H Y I N V E S T I N P O L Y O N E ?