Q 4 AN D FU LL Y EA R 2020 PE RF O RM AN CE $0.30 $0.52 Q4 2020 ORGANIC PERFORMANCE Sales $922 $997 +8% Operating Income EPS $58 $80 +38% +73% • Record 4th quarter sales, adjusted operating income and adjusted EPS performance • All segments delivered year-over-year sales and operating income growth, led by consumer and healthcare end markets • Clariant Masterbatch integration synergy capture ahead of schedule: $5 million realized in 2020 ($ in millions except EPS) (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition Q4 2020 SEGMENT PERFORMANCE 10 Sales Operating Income $100 $100 $100 $922 $100 $100 $100 $997 Distribution CAI SEM Total 2019 2020 $178 $272 $490 $191 $305 $526 SEM Distribution CAI +8% +7% +7% +12% $5 $5 $5 $58 $5 $5 $5 $80 Avient CAI SEM Total $17 $19 $40 $18 $30 $58 Distribution SEM CAI +38% +45% +58% +6% (3) (3) (1) (2) (1) Total company sales include intercompany sales eliminations (2) Total company reflects adjusted operating income and includes corporate costs (3) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition 2020 HIGHLIGHTS 11 • Completed transformational Clariant Masterbatch acquisition and created new brand name Avient • Increased pro forma adjusted EPS 11% from $1.74 to $1.93 as an essential supplier during the pandemic and due to growth in demand for consumer applications • Specialty Engineered Materials delivered record operating income on gains from composites • Achieved record free cash flow, increased dividend for 10th year in a row and delevered from 3.5x to 2.7x net debt to pro forma adjusted EBITDA • Culture is everything: Certified as a Great Place to Work® $133 $150 23%8% 21% 2006 2020PF Avient Portfolio Transformation 22% 59% CLARIANT MASTERBATCH: TRANSFORMATIONAL ACQUISITION 12 Clariant MB EBITDA Growth Purchase Price Multiple 10.8 9.6 6.5 2019PF 2020PF 2020PF w/ Full Synergies • Acquisition of Clariant Masterbatch significantly expands presence in healthcare, packaging and consumer end markets • Strength of portfolio – 13% EBITDA growth as an essential supplier in COVID response and recovery • Acquisition completed on July 1, 2020 for $1.4 billion.

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 ju ri s p r 10 0 W rk rs 0.58 Injury Incidence Rate* Rubber & Plastics Mfg. 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.

In ju ri s p r 10 0 W rk rs 0.58 Injury Incidence Rate* Rubber & Plastics Mfg. 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.

Additional detail, systems, and performance metrics are provided in the Occupational Health & Safety section of this report. 0.0 0.3 0.6 0.9 1.2 1.5 2013 2014 2015 2016 2017 2018 2019 2020 In ju ri s p r 0 W rk rs 0.50 COVID-19 Protecting Our People as an Essential Business As a global organization, Avient recognized the early risks associated with the COVID-19 pandemic. In this way, we also keep today’s waste from becoming tomorrow’s contamination. 0 ZERO Reportable Releases IN EXCESS OF PERMITTED LEVEL TO THE ENVIRONMENT SINCE 2013 Total Waste Intensity K g W te /M P ro ct io 6,500 13,000 19,500 26,000 2016 2017 2018 2019* 2020* Total Waste tr ic T *To facilitate year over year comparisons, 2019 and 2020 metrics for Planet categories have been presented on a pro forma basis inclusive of the acquisition of the Clariant Masterbatch business. Sustainability Report | 2020 81 https://www.avient.com/sites/default/files/2020-07/avient-audit-committee-charter-rev-10-2019.pdf https://www.avient.com/california-transparency-act-disclosure https://www.avient.com/sites/default/files/2020-07/code-of-ethics-for-ceo-cfo-and-controller.pdf https://www.avient.com/sites/default/files/2020-07/avient-compensation-committee-charter-amended-july-2018-name-july-2020.pdf https://www.avient.com/sites/default/files/2020-10/avient-conflict-minerals-policy-10.2020.pdf https://www.avient.com/sites/default/files/2020-07/avient-corporate-governance-guidelines-change-in-ng-committee-name-2020.pdf https://www.avient.com/sites/default/files/2020-10/avient-environmental-policy-august-2020.pdf https://www.avient.com/sites/default/files/2021-04/eeo-updated-2020.pdf https://www.avient.com/company/policies-and-governance/global-policy-anti-bribery-and-anti-corruption https://www.avient.com/company/policies-and-governance/global-policy-antitrust https://www.avient.com/sites/default/files/2020-07/avient-governance-and-corporate-responsibility-committee-charter-rev-2020.pdf https://www.avient.com/company/policies-and-governance/polyone-corporation-privacy-statement https://www.avient.com/sites/default/files/2020-10/quality-policy.pdf https://www.avient.com/sites/default/files/2021-05/avient-responsible-care-ehs-s-policies-2021.pdf https://www.avient.com/sites/default/files/2020-10/avient-health-safety-policy-august-2020.pdf https://www.avient.com/sites/default/files/2020-10/avient-security-policy-august-2020.pdf https://www.avient.com/sites/default/files/2020-10/supplier-code-of-conduct.pdf M E T R I C S Sustainability Report | 2020 82Sustainability Report | 2020 82 Category 2016 2017 2018 2019 2020 Total TRIR (# - Direct) 0.74 0.69 0.51 0.56 0.50 Total TRIR (# - Contractors) 0.00 0.00 0.00 0.00 0.00 Recordable Injuries (Total #) 51 43 35 36 37 Recordable Illnesses (Total #) 0 0 0 0 0 Total LTIR (# - Direct) 0.29 0.20 0.13 0.29 0.24 Total LTIR (# - Contractors) 0.00 0.00 0.00 0.00 0.00 Total Fatality Rate (# - Direct) 0.00 0.00 0.00 0.00 0.00 Total Fatality Rate (# - Contractors) 0.00 0.00 0.00 0.00 0.00 Process Safety Incident Count (#) 0 0 0 0 0.00 Process Safety Total Incident Rate (#) 0.00 0.00 0.00 0.00 0.00 Process Safety Incident Severity Rate (#) 0.00 0.00 0.00 0.00 0.00 Residual Risk Reduction (# of assessments) NA NA 13,267 7,102 4,258 Residual Risk Point Reduction (#) NA NA 1,035,177 864,997 1,009,830 EH&S Internal Audits (#) 40 53 53 58 37 Workers covered by an EH&S Management Systems (%) 100 100 100 100 100 Workers covered by an internally audited EH&S MS (%) 100 100 100 100 100 Facilities w/ an externally certified EH&S MS (%)* 20 24 30 35 74 Suppliers w/ an externally certified EH&S MS (% of surveyed) NA NA NA NA 81 Transport Incidents (# - US DOT 5800/EU ADR) 0 0 0 0 0 Capital Invested in EH&S ($MM USD) 5.305 5.201 8.858 7.870 4.910 *Includes Responsible Care Management System, Responsible Care 14001, ISO 14001, ISO 45001, ISO 50001, & OHSAS 18001.

PolyOne Corporation Page 3 PolyOne Commodity to Specialty Transformation 2000-20052000-2005 2006 - 20092006 - 2009 2010 – 20152010 – 2015 2016 and beyond 2016 and beyond • Steve Newlin appointed, Chairman, • Steve Newlin appointed, Chairman, • Substantial EPS growth from $0.13 to all-time high of $1.96 • Substantial EPS growth from $0.13 to all-time high of $1.96 • Deliver consistent double digit annual EPS growth • Deliver consistent double digit annual EPS growth • Volume driven, commodity producer • Volume driven, commodity producer pp , , President and CEO • New leadership team appointed pp , , President and CEO • New leadership team appointed • Shift to faster growing, high margin, less • Key acquisitions propel • Shift to faster growing, high margin, less • Key acquisitions propel • Maintain >35% vitality index • Pursue strategic i iti th t • Maintain >35% vitality index • Pursue strategic i iti th t • Heavily tied to • Heavily tied to cyclical end markets • Implementation of four pillar strategy • Implementation of four pillar strategy y q p p current and future growth, as well as margin expansion • Specialty mix expands y q p p current and future growth, as well as margin expansion • Specialty mix expands acquisitions that expand specialty offerings and geographic breadth acquisitions that expand specialty offerings and geographic breadth • Performance largely dependent on non- controlling joint ventures • Performance largely dependent on non- controlling joint ventures • Focus on value based selling, investment in commercial resources and innovation to drive transformation • Focus on value based selling, investment in commercial resources and innovation to drive transformation to 65% of Operating Income – strongest mix of earnings in history to 65% of Operating Income – strongest mix of earnings in history • Invest and grow current and next generation talent • Invest and grow current and next generation talent PolyOne Corporation Page 4 Confirmation of Our Strategy SpecializationSpecialization GlobalizationGlobalization Associates Operational Operational Commercial Commercial Th W ld’ P i P id f S i li d PolyOne Corporation Page 5 The World’s Premier Provider of Specialized Polymer Materials, Services and Solutions 27 Consecutive Quarters of EPS Growth PolyOne Corporation Page 6 PolyOne At A Glance 2015 Revenues: $3.4 Billion2015 Revenues: $3.4 Billion 2015 Revenues: $3.4 Billion2015 Revenues: $3.4 Billion 7% PP&S Distribution 29% CAI 23% SEM %DSS End MarketsEnd Markets Adjusted EPSAdjusted EPS 66% 15%DSS End MarketsEnd Markets $1.31 $1.80 Adjusted EPSAdjusted EPS Textiles $1.96 $0 27 $0 21 $0.68 $0.82 $1.00 $1.31 Building & C PolyOne Corporation Page 7 $0.12 $0.27 $0.21 $0.13 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 10%Electrical & Mix Shift Highlights Specialty Transformation Old PolyOne Transformation 2020 80% nc om e* pe ra tin g In 80%+ 43% 65% % o f O 2%0% 2005 2010 2015 2020 Specialty OI $5M $87M $229M Platinum PolyOne Corporation Page 8 *Operating Income excludes corporate charges and special items JV's Performance Products & Solutions Distribution Specialty Color and Engineered Materials at the Heart of Specialty Transformation OPERATING MARGIN 16.7% 17.5% 20%+ COLOR, ADDITIVES AND INKS 15 8% 20%+ SPECIALTY ENGINEERED MATERIALS 12.2% 9.6% 9.3% 12.1% 15.8% 1 7% 4.6% 5.1% 5.5% 7.2% 8.1% 3.4% 5.1% 8.0% 8.6% 1.1% 1.3% YTD YTD PolyOne Corporation Page 9 Proof of Performance & 2020 Goals 2006 2Q 2016 2020 “Where we were” “Where we are” Platinum Vision 1) Operating Income %1) Operating Income % Specialty: Color, Additives & Inks 1.7% 18.0% 20%+ S i lt E i d M t i l 1 1% 14 9% 20%+Specialty Engineered Materials 1.1% 14.9% 20%+ Designed Structures & Solutions N/A 1.7% (TTM) 8 – 10% Performance Products & Solutions 5.5% 12.3% 12 – 14% Distribution 2.6% 6.5% 6.5 – 7.5% 2) Specialty Platform % of Operating Income 6.0% 61% 80%+ 3) ROIC* 5.0% 12.0% 15% 4) Adjusted EPS Growth N/A 11% Double Digit PolyOne Corporation Page 10 ) j % Expansion *ROIC is defined as TTM adjusted OI divided by the sum of average debt and equity over a 5 quarter period TPE’s & Film Therma-Tech™ & Sheet GEON™ Vinyl TPE + OnForce™ Gravi-Tech™ Polymer ColorantsTherma-Tech™ Film PolyOne Corporation Page 11Page 11 Target End Markets… Healthcare OnForce TPE + OnForce TPE Vibration Dampening (SEM/GLS) Source: Outdoor Industry Association TPE & Film (SEM + DSS) Thermoplastic Elastomers TPE O F Polymer Colorants (CAI) Thermatech TPE + OnForce OnForce Thermoplastic Elastomers Sheet (DSS) Polymer Colorants (CAI) PolyOne Corporation Page 12 Target End Markets… Outdoor High Performance Sound & Vibration Management Roof Systems Management Interior & Exterior Trim Interior Structural Components Fuel Handling Underhood Components g SystemsAir management Electronics & Cameras Structural Braces & Brackets Lighting Fluid Handling PolyOne Corporation Page 13 Target End Markets… Automotive ColorMatrix™ Amosorb™ ColorMatrix™ Ultimate™ UV Oxygen Scavenger Ultimate UV Light Barrier PreservaPak™ OnColor™ Smart Batch™ OnCap™ Laser Marking Additives VersaFlex™ TPE Cap Liner PolyOne Corporation Page 14 Target End Markets… Packaging Innovation Drives Earnings Growth $53 Research & Development Spending ($ millions) Specialty Platform Vitality Index Progression* 34% CAI & SEM Gross Margin Target ≥ 35% $20 $53 43% *Specialty Platform revenue from products introduced in last five years 2006 2015 2006 20152006 2015 Innovation Pipeline PotentialInnovation Pipeline Potential PolyOne Corporation Page 15 Ours is Not a Cost Cutting Story VolumeCommercial, R&D Adjusted 2,883 Volume (lbs in millions) $192 Commercial, R&D and Marketing Spending ($M) $721 Adjusted Gross Profit ($M) -16% +86% +138% 2,414$103 $303 2006 20152006 2015 2006 2015 PolyOne Corporation Page 16 Design and Service as a Differentiator Right Material & Color Desired Product Design Appropriate Manufacturing Process Connecting Delivering Concept to Commercialization Connecting the Dots with iQ Design Labs and InVisiO Color Design PolyOne Corporation Page 17 CommercializationInVisiO Color Design Customer First Through World-Class Service Strengthening relationships through:  Providing LSS services to small/medium sized customers  Providing training in Customer Centric Selling Skills with customers On-Time Delivery Commitment to Operational Excellence World’s Best Business Process Excellence Program in 2012* World’s Best Start-up program for Lean Six Sigma Deployment in 2009* 81% 93% 2006 2015 Working Capital % of Sales 16.2%  52% of associates trained in LSS PolyOne Corporation Page 18 2006 2015  Five consecutive years – CFO Magazine Best Working Capital Management in the chemical industry Debt Maturities & Pension Funding 102% Pension Funding** As of June 30, 2016 $700 $800 Debt Maturities As of June 30, 2016 ($ millions) 80% 90% $547 $600 $600 $700 70% $500 50% $300 $400 30% 2008 2Q 2016 $200 2022 2023 Coupon Rate: LIBOR + 2 75% 5 250% PolyOne Corporation Page 19 Net Debt / Adjusted EBITDA*= 2.3x ** includes US-qualified pension plans only*TTM 6/30/2016 Coupon Rate: LIBOR + 2.75% 5.250% (3.50%) Free Cash Flow and Strong Balance Sheet Fund Investment / Shareholder Return  Expanding our sales, marketing, and technical capabilities  Investing in operational  Repurchased 17.3 million shares since early 2013  10 0 million shares are Investing in operational and LSS initiatives  ~75% of capital expenditures fund growth initiatives Organic Gro th Share Rep rchases  10.0 million shares are available for repurchase under the current authorization Growth Repurchases Acquisitions Dividends Annual Dividend  Targets that expand our: • Specialty offerings • End market $0.32 $0.40 $0.48 $0.30 $0.40 $0.50 • End market presence • Geographic breadth  Synergy opportunities  Adjacent material $0.24 PolyOne Corporation Page 20 $0.16 $ $0.10 2011 2012 2013 2014 2015 2016 solutions Why Invest In PolyOne?

a) Section 5 Section 9 (d) Section 8 Person Outstanding Company Voting Securities Incumbent Board Business Combination Section 13 (k) (l) (m) (n) (o) Section 5 Section 9 (p) (q) (r) (s) (t) (u) Section 4 Section 9 (v) (w) Section 8 (x) Section 8 (y) Section 8 (z) (aa) (bb) Section 6 Section 9 (cc) Section 7 Section 9 (dd) Section 7 Section 9 (ee) (ff) (gg) Section 5 Section 9 (hh) 3.

In ju ri s p r 10 0 W rk rs 0.58 Injury Incidence Rate* Rubber & Plastics Mfg. 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.

Parameters used in the RCP 2.6 scenario, which limits the radiative forcing to 2.6 W/m2, included measurable factors i.e. total insured value (TIV) exposed due to the impact of acute (drought, heavy precipitation, heatwaves etc.) and chronic (changing wind patterns, heat stress, sea level rise etc.) physical climate risks based on property value and business interruption in the medium (by 2030) to long term time-horizon (by 2050). Parameters used in the RCP 4.5 scenario, which limits the radiative forcing to 4.5 W/m2, included measurable factors i.e. total insured value (TIV) exposed due to the impact of acute (drought, heavy precipitation, heatwaves etc.) and chronic (changing wind patterns, heat stress, sea level rise etc.) physical climate risks based on property value and business interruption in the medium (by 2030) to long term time-horizon (by 2050). The scenarios chosen for physical climate-related risk scenario analysis are low, intermediate and high based on the RCP 2.6, RCP 4.5 and RCP 8.5 scenarios. 111 Parameters used in the RCP 4.5 scenario, which assumes the radiative forcing increases up to 8.5 W/m2, included measurable factors i.e. total insured value (TIV) exposed due to the impact of acute (drought, heavy precipitation, heatwaves etc.) and chronic (changing wind patterns, heat stress, sea level rise etc.) physical climate risks based on property value and business interruption in the medium (by 2030) to long term time-horizon (by 2050).

In Handbook of Polymer Applications in Medicine and Medical Devices,¹ Laurence W.