HANDLING AND USAGE RATES Triple A is a dispersion which can be supplied individually or in combination with other ColorMatrix colorant and additive technologies. ColorMatrix will recommend the best use rate depending on the expected level of AA following processing, storage conditions and the final desired AA level in the packaged product. This additive technology can be implemented during PET processing without impact on production efficiency. 0 10 20 30 40 50 60 70 80 0.050 0.1 0.15 0.2 % A A Re du ct io n % Use Rate Anthranilamide 0 10 20 30 40 50 60 70 80 90 .04 .06 .08.020 0.1 0.16 0.180.140.12 0.2 % A A Re du ct io n % Triple A-1+ 1.844.4AVIENT www.avient.com Copyright © 2022, Avient Corporation.

Although we are being impacted by weaker foreign exchange rates, Covid-related lockdowns in China, and the war in Ukraine, we are maintaining our full year adjusted EPS guidance of $3.50 on stronger growth projections in the Americas. Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: the ability and time required to consummate the acquisition of Dyneema; our ability to achieve the strategic and other objectives relating to the proposed acquisition of Dyneema; disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; the current and potential future impact of the COVID-19 pandemic on our business, results of operations, financial position or cash flows; changes in polymer consumption growth rates and laws and regulations regarding plastics in jurisdictions where we conduct business; fluctuations in raw material prices, quality and supply, and in energy prices and supply; production outages or material costs associated with scheduled or unscheduled maintenance programs; unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; an inability to raise or sustain prices for products or services; information systems failures and cyberattacks; and other factors affecting our business beyond our control, including without limitation, changes in the general economy, changes in interest rates and changes in the rate of inflation. Three Months Ended March 31, Reconciliation to Consolidated Statements of Income 2022 2021 Sales $ 1,293.8 $ 1,162.3 Gross margin - GAAP 293.7 302.4 Special items in gross margin (Attachment 3) 5.8 (2.2) Adjusted gross margin $ 299.5 $ 300.2 Adjusted gross margin as a percent of sales 23.2 % 25.8 % Operating income - GAAP 128.6 120.4 Special items in operating income (Attachment 3) 7.8 2.4 Adjusted operating income $ 136.4 $ 122.8 Adjusted operating income as a percent of sales 10.5 % 10.6 % The table below reconciles pre-special income tax expense and the pre-special effective tax rate to their most comparable US GAAP figures.

When showing constant dollar figures on GAAP and non-GAAP financial measures, the foreign exchange impact is calculated by using current foreign exchange rates and applying them to the prior period results. Avient does not provide reconciliations of forward-looking non-GAAP financial measures, such as outlook for Adjusted EBITDA, Adjusted Earnings Per Share and Adjusted Tax Rate, to the most comparable GAAP financial measures on a forward- looking basis because Avient is unable to provide a meaningful or accurate calculation or estimation of reconciling items and the information is not available without unreasonable effort. Continue fostering our Great Place to Work® culture Strategic Objectives Long Term Growth Rates Growth Drivers $340 $455 $790 $1,135 $51 $84 $212 $645 $108 $113 $231 $230 $265 $358 $726 $725 8-12% 8-10% 8-10% 5% Sustainable Solutions Composites Healthcare Asia/Emerging Regions Profitable Growth Great Place to Work 5.4% 10.9% 16.0% 2006 2014 2023 EBITDA Margins $0.14 $1.93 $2.36 2006 2014 2023 TOP-TIER SUSTAINABILITY PERFORMANCE AND RECOGNITION Industry Sustainability Standards ESG Ratings Performance 1 4 87th 94th percentile 5 Avient CDP Score: A- FE BRUARY 14 , 2024 W E BCAS T P RE S E N TAT I O N DR.

When showing constant dollar figures on GAAP and non-GAAP financial measures, the foreign exchange impact is calculated by using current foreign exchange rates and applying them to the prior period results. Continue fostering our Great Place to Work® culture Strategic ObjectivesStrategic Objectives Long Term Growth Rates Growth DriversGrowth Drivers $340 $455 $790 $1,175 $51 $84 $212 $668 $108 $113 $231 $293 $265 $358 $726 $830 8-12% 10% 8-10% 5% Sustainable Solutions Composites Healthcare Asia/Emerging Regions Profitable GrowthProfitable Growth Great Place to WorkGreat Place to Work 5.4% 11.5% 16.2% 2006 2018 2022 EBITDA Margins $0.14 $2.67 $3.04 2006 2018 2022 2022 data is pro forma for acquisition of Avient Protective Materials and Distribution divestiture TOP-TIER SUSTAINABILITY PERFORMANCE AND RECOGNITION Industry Sustainability Standards 90th percentile 87th ESG Ratings Performance 5 5 Innovation is the lifeblood of a specialty company. Avient reflects 2023 adjusted EBITDA guidance of $525M and estimated run-rate CAPEX of $110M. 2023E (%) 27 79 89 83 83 78 75 90 81 76 72 68 63 53 11 Avient Specialty Other Specialty / MULTIPLE EXPANSION Note: Avient reflects 2023 adjusted EBITDA guidance of $525M and closing share price of $37.07.

Total expected cost synergy estimates increased from $60 million to $75 million, and the rate of capture has also accelerated. Factors that could cause actual results to differ materially from those implied by these forward-looking statements include the impact the COVID-19 pandemic has on our business, results from operations, financial condition and liquidity; our ability to achieve the strategic and other objectives relating to the acquisition of Clariant’s Masterbatch business, including any expected synergies; disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; changes in polymer consumption growth rates and laws and regulations regarding plastics in jurisdictions where we conduct business; changes in global industry capacity or in the rate at which anticipated changes in industry capacity come online; fluctuations in raw material prices, quality and supply, and in energy prices and supply; production outages or material costs associated with scheduled or unscheduled maintenance programs; unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; our ability to continue to pay cash dividends including at the increased rate; an inability to raise or sustain prices for products or services; an ability to achieve or delays in achieving or achievement of less than the anticipated financial benefit from initiatives related to acquisitions and integration, working capital reductions, costs reductions and employee productivity goals; information systems failures and cyberattacks; and other factors affecting our business beyond our control, including, without limitation, changes in the general economy, changes in interest rates and changes in the rate of inflation. December 31, GAAP Special Adjusted GAAP Special Adjusted Income from continuing operations before income taxes $ 57.4 $ 4.2 $ 61.6 $ 19.3 $ 15.0 $ 34.3 Income tax (expense) benefit - GAAP 17.3 — 17.3 (12.9) — (12.9) Income tax impact of special items (Attachment 3) — 1.3 1.3 — 0.4 0.4 Tax adjustments (Attachment 3) — (32.2) (32.2) — 4.5 4.5 Income tax (expense) benefit $ 17.3 $ (30.9) $ (13.6) $ (12.9) $ 4.9 $ (8.0) Effective Tax Rate(1) (30.1) % 22.1 % 66.8 % 23.3 % (1) Rates may not recalculate from figures presented herein due to rounding 12 Year Ended GAAP Special Adjusted GAAP Special Adjusted Income from continuing operations before income taxes $ 139.0 $ 66.2 $ 205.2 $ 109.4 $ 61.7 $ 171.1 Income tax expense - GAAP (5.2) — (5.2) (33.7) — (33.7) Income tax impact of special items (Attachment 3) — (14.1) (14.1) — (11.1) (11.1) Tax adjustments (Attachment 3) — (27.3) (27.3) — 5.2 5.2 Income tax expense $ (5.2) $ (41.4) $ (46.6) $ (33.7) $ (5.9) $ (39.6) Effective Tax Rate(1) 3.7 % 22.7 % 30.8 % 23.1 % (1) Rates may not recalculate from figures presented herein due to rounding The following pro forma adjustments are referenced by management to provide comparable business performance by incorporating the Clariant Masterbatch business in periods prior to the acquisition date (July 1, 2020).

Steel – Static 0.25 0.46 0.18 0.15 0.12 0.19 0.11 0.14 0.13 0.24 0.17 0.17 Impact Notched Izod Impact (23°C, 3.18 mm, Injection Molded) J/m ASTM D256A 41 64(6) 110 107 107 70 80 37 37 75 – 69 Thermal Properties Heat Deflection Temperature ASTM D648 0.45 MPa °C 215(6) – 250 215 216 184 152 151(6) 153(6) 218(6) – – 1.8 MPa °C 65(6) 239(7) 244(6) 210 210 75 94 81.1(6) 88 197(6) – 135(5) Electrical Properties Surface Resistivity ohms/sq ASTM D254 – – – 1.30x1012 1.9x1012 5.2x1012 – – – – – 1.0x109 Dielectric Strength (Short Time) kV/mm – – 8.5 – – – – – – – – – Flammability Flame Rating Class UL 94 HB – – HB HB HB – HB – – – – LubriOne™ Internally Lubricated Formulations NOTES (1) Type I, 5.1mm/min (2) Type I, 21.3 mm/min (3) Type I, 50 mm/min (4) Type I, 5.1mm/min, Break (5) 3.2 mm thick, Unannealed (6) 6.35 mm thick, Unannealed (7) 3.2 mm thick, Annealed PRODUCT DESCRIPTION UNITS TEST METHOD 5024 RS HI 5021 RS S1 5021 RS X2 5019 X1 LB6700- 5001 RS AF Black NN- 000/01M Black SO REC LB6600- 5030 RS Grey LB3300- 5010 RS LB3300- 5005 RS REC LB3220- 5001 RS C Natural X1 5010 GP Grey 5006 RS PE 5004 RS PE LB4200- 5022 Black LB4200- 5023 Base Polymer PA 6 PA6/PA66 PA66 PBT PC PKE POM Lubricant UHMWPE1 UHMWPE UHMWPE UHMWPE UHMWPE MoS22 Graphite UHMWPE UHMWPE UHMWPE Graphite UHMWPE UHMWPE MoS2 UHMWPE Filler type GF10 GF30 GF30 GF50 GF50 Unfilled GF33 GF20 MI20 GF10 Unfilled GF20 GF30 Unfilled Unfilled General Properties Specific Gravity g/cm3 ISO 1183 1.18 1.35 1.39 1.55 1.58 1.14 1.44 1.42 1.46 1.23 1.26 1.34 1.43 1.4 1.35 Mechanical Properties Tensile Modulus (23°C) MPa ISO 527-1 4250 9500 9000 15500 16600 3500 10600 6300 3330 4000 1630 5300 9250 2470 2150 Tensile Strength (Yield, 23°C) MPa ISO-527-2 97 150 160 205 200 85 164 102 55 60 60 108 99.1 55 50 Tensile Elongation (Break, 23°C) % ISO-527-2 12 2.5 3 2.7 2.4 3.4 2.0 4.2 8 2.5 46 3.7 1.5 11 11 Flexural Strength (23°C) MPa ISO 178 103 – – 285 265 108 215 127 78 85 38 155 117 73 68 Flexural Modulus (23°C) MPa ISO 178 3250 – – 12400 11100 2690 9000 4700 3000 3100 1380 4600 5450 2210 2070 Impact Charpy Notched Impact Strength (23°C, Injection Molded) kJ/m^2 ISO 179 14 12 10 15 10 3 6 7.7 4.3 12 15 10 7.6 8 5 Charpy Unnotched Impact Strength (23°C, Injection Molded) kJ/m^2 ISO 179 82 55 61 75 60 65 50 47 69 - NB 63 36 NB NB Thermal Properties Deflection Temperature Under Load 1.8 Mpa, Unannealed °C ISO 75-2/A 107 – – 204 – 73 235 – – – 90 210 204 86 80 Cofficient of Friction (CoF) & Wear Rate CoF vs. Steel - Static ASTM D1894 – 0.237 0.183 – – – – – – – – – – – – CoF (20min 0.2 m/s) g/min ASTM G77 – – – – – – – – – – – 0.79 0.79 – – Wear Rate (20h, 1m/s) g/min ASTM G77 – – – – – – – – – – – 1.02E-05 1.89E-05 – – Wear Rate (PV=2500) (in3-min/ ft-lb-hr) *10-10 ASTM D3702 – 125 175 – – – – – – – – – – – – Flammability Flame Rating UL 94 – – – – – – – HB HB V2 @ 3mm – – – – – LubriOne™ Internally Lubricated Formulations - PTFE-Free NOTES *ASTM D3702 (PV=2500, against 1018-steel) 1UHMWPE - ultra high molecular weight polyethylene 2MoS2 - molybdenum disulphide To learn more about LubriOne™ internally lubricated solutions, contact Avient at +1.844.4AVIENT (1.844.428.4368) www.avient.com EXPLORE WEAR RESISTANCE LubriOne internally lubricated thermoplastic polymers have been specifically designed to improve tribological performance in components, offering low coefficient of friction and improved wear–resistance properties.

CUSTOMIZED SOLUTIONS Our custom capabilities include: • Drilling • Routing • Machining USES AND APPLICATIONS Composite ballistic panels from Avient are suitable for indoor and outdoor use in commercial, governmental, industrial, and residential applications: • Military structures • Infrastructure facilities and equipment • Banks • Check cashing stations • Pawn shops • Loan and bail/bond offices • Courtrooms • Police stations • Detention facilities • Bonded warehousing • Security buildings • Equipment shielding locations • Safe rooms • Storm shelters • Judges’ chambers • Finishing • Custom colors • Unique panel sizes UL 752 & NIJ STANDARDS FOR BALLISTIC RESISTANT PROTECTIVE MATERIALS UL Rating NIJ Level Ammunition Velocity No. Property GlasArmor Panel ThermoBallistic Panel Test Method Glass Content 55 wt% 73 wt% Density 0.066 lb/in3 1.83 g/cm3 0.062 lb/in3 1.72 g/cm3 ASTM D-792 Flex Mod 2.1–2.7 msi 14.5 - 18.6 GPa 2.5 msi 17.2 GPa ASTM D-790 Flex Strength 65 ksi 448 MPa 14 ksi 96.5 MPa ASTM D-790 Barcol Hardness 50–60 n/a ASTM D-2583 Fire Rating 1 hour1 n/a ASTM E-119-09c Flame Spread Rating 452 n/a ASTM E-84-08a Smoke Developed Rating 1652 n/a ASTM E-84-08a MATERIAL DATA (TYPICAL VALUES) 1 UL Level 3 panel was fire tested as part of a wall system with steel studs and drywall face sheet 2 NFPA & IBC Class B rating achieved www.avient.com Copyright © 2023, Avient Corporation.

Standard grades in the portfolio conform to UL 94 V-2, V-0 and 5VA performance ratings, and many offer elevated Relative Thermal Index (RTI) ratings. Available in both halogen and non-halogen products, including grades with UL Yellow Card rating, Maxxam FR products can be customized for specific performance needs. Vents should be placed at the intersection of each 90° bend in the runner system off of the cold slug well and vented to atmosphere Black Specks Contamination • Purge barrel with general purpose PP • Verify correct nozzle is being used • Pull screw for cleaning Degraded/overheated material • Decrease melt temperature • Decrease injection speed • Use appropriately sized barrel Brittleness Degraded/overheated material • Decrease melt temperature • Decrease injection speed • Use appropriately sized barrel Gate location and/or size • Relocate gate to nonstress area • Increase gate size to allow higher flow rate and lower molded-in stress Burning Process related Mold design • Clean, widen and increase number of vents • Increase gate size to reduce shear Fibers/Minerals on Surface or Uneven Surface Appearance Melt temperature too low • Increase injection speed Insufficient packing • Increase hold pressure and time Flash Injection pressure too high • Decrease injection pressure • Increase clamp pressure • Increase transfer position Excess material volume • Decrease pack pressure • Decrease shot size Melt and/or mold too hot • Decrease screw speed Loose clamp • Reset mold height • Increase clamp tonnage Troubleshooting Recommendations Incomplete Fill Melt and/or mold too cold • Increase nozzle and barrel temperatures Mold design • Enlarge or widen vents and increase number of vents • Check that vents are unplugged • Check that gates are unplugged • Enlarge gates and/or runners • Perform short shots to determine fill pattern and verify proper vent location • Increase wall thickness to move gas trap to parting line Shot size • Adjust transfer position to 98% full Nozzle Drool Nozzle temperature too hot • Decrease nozzle temperature • Increase screw decompression Shrink Too much shrink • Increase cooling time Too little shrink • Decrease cooling time Sink Marks Part geometry too thick • Reduce wall thickness • Reduce rib thickness Melt too hot • Decrease nozzle and barrel temperatures Insufficient material volume • Increase packing pressure Troubleshooting Recommendations (continued) Sticking in Mold Overfilled cavity • Decrease injection rate and pressure • Decrease hold pressure • Decrease cooling time Mold design • Increase draft angle • Polish cores in direction of ejection Part is too hot • Increase cooling time Warp Process related • Increase cooling time • Increase pack pressure • Increase pack time Mold design • Inspect for non-uniform mold cooling Part design • Inspect for non-uniform wall thickness Temperature control unit incorrect temperature • Check settings • Inspect thermocouple Weld Lines Melt front temperatures are too low • Increase pack and hold pressure Mold design • Increase gate size • Perform short shots to determine fill pattern and verify proper vent location • Add vents and/or false ejector pin • Move gate location 1.844.4AVIENT www.avient.com Copyright © 2022, Avient Corporation.

Excelite OnePager Grab Handle (2) TIER 1 MOLDER A U T O M O T I V E G R A B H A N D L E • Reduce production cycle times • Achieve processing consistency in chemical foaming additive (CFA) performance • Control dimensional stability and reduce production scrap rates • Lower conversion costs • Improved cycle time by 20% • Achieved additional 2% density reduction • Resulted in a finer cell structure with a higher cell density, significantly improving dispersion and dimensional stability • Maintained Class A finish • Reduced CFA use rate by 80% Excelite™ IM Chemical Foaming Additives KEY REQUIREMENTS* WHY AVIENT?

Pipe Mfg Liquid Color App Snapshot final (1) PIPE MANUFACTURER P R E S S U R E / N O N - P R E S S U R E P I P E S • Provide a safe and compliant manufacturing environment for all team members • Improve weatherability and outdoor exposure longevity in field and yard environments • Increase color consistency and enhance pipe appearance • Reduce scrap rates and eliminate order rejections • Meet required compliance and regulatory approvals • Incur no capital expense for dosing & handling equipment • Provided a customer-centric approach focused on gaining operational efficiencies to support an improved manufacturing environment • Offered formulation expertise and problem-solving experience to upgrade pipe performance • Attained finely dispersed TiO2 and color distribution throughout the pipe, meeting quality requirements while reducing scrap rates • Delivered solutions with extensive NSF, UL and pipe industry approvals • Supplied dosing equipment to eliminate capital costs, backed with on-call technical support ColorMatrix™ Liquid Colorant + Dosing Equipment KEY REQUIREMENTS WHY AVIENT?