PowerPoint Presentation M E D I C A L C O N N E C T O R S • Ongoing production with no change to regular set up • Excellent processing and demolding performance • Color stability during processing • Excellent chemical and impact resistance • Enabled efficient ongoing production rates without changing any processing parameters • Safeguarded color stability and transparency during processing for optimal aesthetics • Ensured regulatory requirements for biocompatible ISO109931 and FDA were met • Provided a solution effective across a range of high-temperature polymers, including PEEK, PPSU, PES, PSU, PEI, LCP, and PPS Colorant Chromatics Evoluscend non- PFAS* high-temperature polymer mold release additive KEY REQUIREMENTS WHY AVIENT AVIENT SOLUTION PRODUCTIVITY + REGULATORY LEARN MORE ELECTRICAL COMPONENT OEM (*) A non-PFAS additive manufactured without non-intentionally added (NIA) PFAS or PTFE. (*) manufactured without intentionally added PFAS and without PTFE (1) refers to sulfone products only https://www.avient.com/products/polymer-additives/processing-enhancement-additives/colorant-chromatics-evoluscend-non-pfas-high-temperature-mold-release-additive Slide Number 1

INJECTION MOLDER T O U C H S C R E E N S U R F A C E • Provide antimicrobial protection with strong log reduction (gram-negative / gram-positive efficacy) using globally available and cost-effective active ingredients • Incorporate a compatible recycled base resin • Utilize recyclate with no haze or discoloration (yellowing) of product, even with long-term heat aging • Maintain visual clarity while using antimicrobial raw materials with additional functional additives • Offered expertise in antimicrobial solutions, application development, and versatile product forms • Provided non-public health claims and reduced material use with recycled polycarbonate • Delivered strong efficacy >Log 2 against gram- negative and gram-positive bacteria • Supported a safe, hygienic environment while maintaining clarity and performance using a masterbatch with recycled content Cesa WithStand SX Low Haze Antimicrobial Additives KEY REQUIREMENTS WHY AVIENT?

Case Study - ColorMatrix Impress rPET Bottle vF PDF © 2019, All Right Reserved PolyOne Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012 BOTICÁRIO C O S M E T I C P A C K A G I N G • Cosmetic bottle packaging colorant designed to help distinguish product on the shelf • Compatible with sustainable packaging material to enable use in rPET technology • Brand-specified color • Local material development support • Achieved brighter color and more brilliant metallic effect than alternative colorants • Developed for use in 10% recycled rPET bottle • Formulated custom liquid colorant on-site and matched to brand color standard ColorMatrix™ Impress™ High Gloss Metallic Effect Colorants liquid color for bottle packaging KEY REQUIREMENTS WHY POLYONE?

RESPIRATORY DEVICE MANUFACTURER C P A P M A C H I N E C O V E R • Good aesthetics with high COF for grip functionality • Chemically bondable to FR PC/ABS down to 1mm • NCS S 9000-N color suitable for UV laser marking to white • Good scratch and mar resistance • Good chemical resistance to detergents, alcohols and bleach • Pass VOCs & out-gassing in accordance to ISO 18562-3/2:2017 • Customized formulation to balance mar resistance, flow, and laser marking whiteness and clarity • Collaborated on tooling improvements to widen processing window and increase yield rate • Provided application development and on- site technical support to manage short shot, sink marks, burn marks and air trap Customized VersaflexTM TPEs WHY AVIENT?

Abrasion Resistance Yarn on Yarn Abrasion Ultraviolet (UV) Resistance Flame Resistance Chemical Resistance (Acid) Chemical Resistance (Alkali) Chemical Resistance (Organic Solvent) X X O P P P P Property UOM Value Breaking Tenacity g/d 6.7 – 9.4 Specific Gravity Ratio 2.48 Elongation @ Break % 5.5 Tensile Modulus g/d 140 – 170 Moisture Regain* % °C TBD Property UOM Value Breaking Tenacity g/d 6.0 – 7.3 Specific Gravity Ratio 2.58 Elongation @ Break % 3.5 Tensile Modulus g/d 200 – 275 Moisture Regain* % °C TBD FIBERGLASS BARE FIBER PERFORMANCE FIBERGLASS DATA E-Glass S-Glass * Equilibrium moisture regain @ 55% RH ** Creep @ 40%-58% ultimate tensile strength *** Shrinkage in dry air @ 177 C for 30 minutes MOVING HIGH PERFORMANCE FIBERS FORWARD ABOUT FIBER-LINE® For over 25 years, FIBER-LINE® has provided science- driven expertise that improves the performance and the end-use processing of high performance fibers.

°C TBD Property UOM Value Breaking Tenacity g/d 8.4 Specific Gravity Ratio 1.38 Elongation @ Break % 19.5 Tensile Modulus g/d 70 Moisture Regain* % 0.4 Creep** % 1.0 – 12.0 Shrinkage*** % 3.0 – 8.0 Melt Point °C 256 Decomposition Temp. °C TBD High Tenacity Low Shrink MOVING HIGH PERFORMANCE FIBERS FORWARD This data is provided for informational purposes only, and does not constitute a specification. PET POLYESTER DATA PET POLYESTER BARE FIBER PERFORMANCE * Equilibrium moisture regain @ 55% RH ** Creep @ 40%-58% ultimate tensile strength *** Shrinkage in dry air @ 177 C for 30 minutes MOVING HIGH PERFORMANCE FIBERS FORWARD ABOUT FIBER-LINE® LOCATIONS Headquarters, R&D, Manufacturing FIBER-LINE® LLC 3050 Campus Drive Hatfield, PA 19440 +1 215.997.9181 fiber@fiber-line.com Manufacturing Operations FIBER-LINE® LLC 280 Performance Drive SE Hickory, NC 28602 +1 828.326.8700 fiber@fiber-line.com EMEA & Asia Pacific Operations FIBER-LINE® INTERNATIONAL B.V.

°C TBD Property UOM Value Breaking Tenacity g/d 42.0 Specific Gravity Ratio 1.56 Elongation @ Break % 2.5 Tensile Modulus g/d 1800 Moisture Regain* % 0.6 Creep** % 0 Shrinkage*** % °C TBD Standard Modulus High Modulus CHEMICAL COMPATIBILITY Chemical Resistance to Acid: Strength loss in HCl, HNO3, H2SO4 & NaCl. POLYBENZYLOATE (PBO) DATA POLYBENZYLOATE (PBO) BARE FIBER PERFORMANCE * Equilibrium moisture regain @ 55% RH ** Creep @ 40%-58% ultimate tensile strength *** Shrinkage in dry air @ 177 C for 30 minutes MOVING HIGH PERFORMANCE FIBERS FORWARD ABOUT FIBER-LINE® LOCATIONS Headquarters, R&D, Manufacturing FIBER-LINE® LLC 3050 Campus Drive Hatfield, PA 19440 +1 215.997.9181 fiber@fiber-line.com Manufacturing Operations FIBER-LINE® LLC 280 Performance Drive SE Hickory, NC 28602 +1 828.326.8700 fiber@fiber-line.com EMEA & Asia Pacific Operations FIBER-LINE® INTERNATIONAL B.V.

D is t. ) K W R P P G A V Y F U L R P M G C P F M C H X L H U N E C L A S H E M N C E S C L Source: Peer data per Bloomberg market data as of October 25, 2021 Avient reflects 2021 estimated revenue of $4,750M and estimated CAPEX of $80M (excludes one-time synergy capture CAPEX of $20M) Avient Specialty Formulators Other Chemical/Specialty Companies Free Cash Flow Conversion (1) 2021E (%) Being asset light helps us to generate strong free cash flow that is in line with specialty formulators. Free cash flow conversion calculated as (EBITDA – Capex) / EBITDA HIGH FREE CASH FLOW CONVERSION Avient reflects 2021 estimated EBITDA of $580M and estimated CAPEX of $80M (excludes one-time synergy capture CAPEX of $20M) Source: Peer data per Bloomberg market data as of October 25, 2021 86 92 85 82 79 77 74 89 83 82 80 79 79 78 78 72 33 A vi en t K W R P P G A V Y F U L R P M G C P F M C U N V R C E H X L B N R A S H E C L E M N H U N S C L A L B (12) Source: Peer data per Bloomberg market data as of October 25, 2021 Total Enterprise Value / 2021E EBITDA Our current valuation with updated guidance implies an EBITDA multiple that is below specialty formulator peers and the median of other selected chemical / specialty companies. With the Clariant Color business acquisition and divestment of the PP&S business, our exposure is now concentrated in less-cyclical and high-growth markets, with increased geographic diversification and a more specialized portfolio that can significantly expand EBITDA margins. 24 Avient reflects 2021 estimated EBITDA of $580M OUR VALUATION VERSUS PEERS Avient Specialty Formulators Other Chemical/Specialty Companies 11.0 18.3 16.3 15.4 14.5 11.6 11.1 36.2 28.0 24.9 13.0 11.5 11.3 10.0 9.2 8.8 7.7 6.7 A vi en t K W R P P G A V Y R P M F U L G C P A L B H X L E C L A S H F M C B N R S C L U N V R E M N C E H U N SUMMARY: WHY INVEST IN AVIENT?

D is t. ) K W R P P G A V Y F U L R P M G C P H X L F M C H U N IF F E C L A S H K R A E M N C E S C L A LB Median: 5%Median: 3% Source: Peer data per Bloomberg market data as of July 28, 2021 Avient reflects 2021 estimated revenue of $4,650M and excludes one-time synergy capture CAPEX ($20M) Avient Specialty Formulators Other Chemical/Specialty Companies Free Cash Flow Conversion (1) 2021E (%) Being asset light helps us to generate strong free cash flow that is in line with specialty formulators. Free cash flow conversion calculated as (EBITDA – Capex) / EBITDA Median: 81% Median: 78% HIGH FREE CASH FLOW CONVERSION Avient reflects 2021 estimated EBITDA of $580M and excludes one-time synergy capture CAPEX ($20M) Source: Peer data per Bloomberg market data as of July 28, 2021 87 90 86 82 80 78 73 87 82 82 79 79 78 78 77 76 71 67 46 A vi en t K W R P P G A V Y F U L R P M G C P F M C U N V R C E IF F A S H E C L B N R E M N H X L H U N K R A S C L A L B (6) Source: Peer data per Bloomberg market data as of July 28, 2021 Total Enterprise Value / 2021E EBITDA Our current valuation with updated guidance implies an EBITDA multiple that is below specialty formulator peers and the median of other selected chemical / specialty companies. With the Clariant Masterbatch acquisition and divestment of the PP&S business, our exposure is now concentrated in less-cyclical and high-growth markets, with increased geographic diversification and a more specialized portfolio that can significantly expand EBITDA margins. 25 Avient reflects 2021 estimated EBITDA of $580M OUR VALUATION VERSUS PEERS Avient Specialty Formulators Other Chemical/Specialty Companies 9.5 18.5 15.1 15.1 14.0 11.0 10.4 29.5 28.2 23.9 18.7 12.4 12.2 11.1 9.3 9.2 9.2 7.6 7.6 6.0 A vi en t K W R P P G A V Y R P M F U L G C P A L B H X L E C L IF F F M C B N R A S H S C L E M N U N V R K R A C E H U N Median: 11.1xMedian: 14.6x SUMMARY: WHY INVEST IN AVIENT?

Avient Climate-related Scenario Analysis Summary SCOPE & TIME HORIZON AVIENT SCENARIO NET ZERO FUTURE PLEDGING PROGRESS STEADFAST POLICY CONVENTION 1.3-1.5°C 1.9-2.3°C 2.4-2.8°C TRANSITION RISK Net Zero Emissions Scenario Announced Pledges Scenario Stated Policies Scenario (IEA WEO 2021 1 scenarios) (NZE) | 1.4°C (APS) | 2.1°C (STEPS) | 2.6°C Emissions peak at 2050 and slowly decline through 2100 Emissions continue to rise beyond 2100 at slower rates Emissions continue to rise beyond 2100 at current rates BUSINESS IMPLICATIONS Increased transition risk: Business impacted by climate policies, carbon prices, market pressures and technological advancements Increased physical risk: Business impacted by direct damages and indirect discruption assocated with severe changes in climate driven weather events · Highly regulated policy environment · Moderate policy regulation · Few changes to current policy settings · Ambitious; net zero commitments achieved at most all levels · Government commitments and National Determined Contributions are achieved · Not all stated commitments are achieved · Improved air pollution in advanced and emerging market & developing economies · Rising air pollution levels especially in emerging market and developing economies · Doubling of the frequency of extreme heat events by 2050 and 120% increase in intensity & rising air pollution levels especially in emerging market and developing economies · Expectation of signifcant capital allocation for innovative product design, energy efficiency investments, and clean electrification of operations · Additional levels of R&D investment will be required to contribute to and attain announced commitments. · Continued R&D investment in current initiatives is expected · Steep increases in advanced economies' carbon prices · Considerable increases in emerging economies' carbon prices · Some change in carbon prices · Declining fuel prices · Regional variability in fuel prices, though slight net increase · Rising fuel prices 1 International Energy Agency World Energy Outlook 2021 The following summarizes Avient's climate-related risks and opportunities analyzed across multiple scenarios, in alignment with the Task Force on Climate-Related Financial Disclosures (TCFD) framework. CLIMATE-RELATED SCENARIOS ANALYZED Global operations through 2050 PARAMETERS & ASSUMPTIONS EXCEED 2.5°C EXCEED 2.0°C RETURN BELOW 1.5°C IMPACT DRIVER & TIME HORIZON NET ZERO FUTURE PLEDGING PROGRESS STEADFAST POLICY Policy & Legal Risk M L Carbon pricing exposure in USA, China, Germany and Spain Fines and/or compliance measures: · Clean electrification of operations; · Emissions intensive equipment phase-out; · Circular economic and materials efficiency strategies; · Net-zero carbon building standards; · Mandatory energy management systems and audits Carbon pricing exposure in USA, China, Germany, Spain, and Saudi Arabia Increased fines and compliance measures related to: · Phase-outs aligned with Nationaly Determined Contributions (NDC); · Renewable energy sourcing; · Material efficiency standards (minimum recycled content for packaging, and enhanced vechicle air quality) Some regional carbon pricing exposure in China, Germany and Spain Technology Risk S M Capital expenditures to subsitute emissions intensive technologies Declining price point competitiveness caused by decarbonization pass through costs R&D costs to transition to design and deploy lower-emissions technologies Slower substitution of materials with lower- emission options Market Risk S M Declining redundant supply and sourcing more sustainably causes raw material costs to rise Customers demand to lower their scope 3 emissions from purchased goods and services across all markets Increasing competition from existing and unforeseen polymer and non-polymer- based products that reduce further impact on climate Customer behaviors from advanced economies demand lower carbon products Rising degree of uncertainty in raw material prices Slow customer behavior changes in some advanced economies High degree of uncertainty in energy market signals Reputation Risk L Chemical sector or certain petrochemical materials (i.e., plastics) stigmatized Rising expectations for rapid innovation and displacement of older, heavily carbon- intensive designs and manufacturing processes NDC countries expected to innovate and seek rapid minimization of customers' scope 3 emissions Increased concern from stakeholders for not addressing climate change globally or for the chemicals sector Acute & Chronic Risk L Possible direct damage to fixed assets and logistics disruptions in both our value chain and operations More frequent and intense weather events and changing preciptation patterns are likely to damage manufaturing faciliites, disrupt logistics and sourcing activities, and negatively affect employee health and communities where we operate More frequent and intense weather events and changing preciptation patterns are likely to affect the performance of grids and thermal plants while pushing up demand for cooling, damage fixed assets, disrupt logistics and sourcing activities, and negatively affect employee health and communities where we operate IMPACT DRIVER & TIME HORIZON NET ZERO FUTURE PLEDGING PROGRESS STEADFAST POLICY Resource Efficiency Opportunity S M L More efficient production and distribution processes, reduced natural resource usage, continued use of recycling, and inclusion of recycled materials in our products such as reSoundTM R, ColorMatrix™ Capture™ Oxygen Scavenger, among others will contribute to increasing product revenues and reduced operating costs Resource efficiency efforts supported by capital allocation in NDC countries is more likely and may accelerate a path toward maximizing ROI and reducing operating costs Less regulatory and pressure to incentivize may cause gains from efforts to lag Energy Source Opportunity M L Use of greater external financing options, such as operating lease arrangements or energy performance shared savings contracts, to source lower emission-energy and new technologies, such as carbon capture, utilization & storage (CCUS), in our operations may reduce operating costs and maximize returns on investment Use of lower emission-sources of energy in operations will lower operating costs and contribute toward reductions of our scope 1 and 2 emissions and product carbon intensities Use of renewable energy, increased efficiency, and electrification initiatives will lower operating costs and contribute toward reductions of our scope 1 and 2 emissions and product carbon intensities.