Additionally, Adjusted EPS excludes the impact of special items and amortization expense associated with intangible assets. 2 PRO FORMA 2021 TO 2022 BRIDGE 3 2021 EPS from Continuing Operations 1.69$ Pro Forma & Special Items 1.33 Proforma 2021 Adjusted EPS 3.02$ FX Impact (0.22) China Lockdowns / Russia Import Sales (0.24) Outdoor High Performance (0.13) Dyneema 0.06 Color, Additives and Inks 0.38 Legacy Specialty Engineered Materials 0.22 Other 0.01 Proforma 2022 Adjusted EPS 3.10$ COLOR, ADDITIVES AND INKS 7% (4%) (9%) 6% (10%) 0% 1% 2% 7% 10% 4% (3%) 12% (6%) 5% 6% 9% 610 650 624 649 587 565 581 526 2,402 2,390 589 650 589 649 543 565 545 526 2,266 2,390 116 121 112 119 93 95 88 79 409 414 113 121 106 119 87 95 84 79 390 414 10% 4 (1%) PRO FORMA SPECIALTY ENGINEERED MATERIALS 16%8% (8%) (8%) 3% (6%) (6%) (2%) 2% 20%12% (1%) (2%) 5% (1%) (2%) 3% 6% 314 338 348 343 325 300 321 295 1,308 1,276 303 338 329 343 303 300 301 295 1,236 1,276 67 78 75 77 70 66 66 62 278 283 65 78 73 77 67 66 63 62 268 283 5 Constant Currency Adjusted EPS Adjusted EPS PRO FORMA AVIENT 10% (3%) (21%) 3% 9% 5% 7% (5%) (9%) (1%) (1%) (12%) 1% 17% 8% (14%) 11% 14% 10% 11% 2% (3%) 5% 8% (5%) 7% 925 987 973 992 912 867 902 823 3,712 3,669 893 987 919 992 847 867 845 823 3,504 3,669 161 176 164 172 142 141 133 117 600 606 155 176 157 172 131 141 123 117 566 6068% 2% 0.84 0.98 0.87 0.96 0.70 0.68 0.61 0.48 3.02 3.10 0.79 0.98 0.82 0.96 0.63 0.68 0.56 0.48 2.80 3.10 17% 24% 6 March 31, 2022 March 31, 2021 Net income from continuing operations $ 64.7 $ 60.4 Net income attributable to noncontrolling interests (0.3) (0.4) Net income from continuing operations attributable to Avient shareholders $ 64.4 $ 0.70 $ 60.0 $ 0.65 Special items, after tax $ 6.4 $ 0.07 $ 2.6 $ 0.03 APM pro forma adjustments 2.6 0.03 (3.1) (0.03) Amortization expense, after tax 17.4 0.19 17.9 0.19 Adjusted pro forma net income / EPS $ 90.8 $ 0.98 $ 77.4 $ 0.84 Weighted average diluted shares 92.3 92.2 June 30, 2022 June 30, 2021 Net income from continuing operations $ 62.8 $ 50.2 Net income attributable to noncontrolling interests — (0.6) Net income from continuing operations attributable to Avient shareholders $ 62.8 $ 0.68 $ 49.6 $ 0.54 Special items, after tax $ 3.2 $ 0.03 $ 11.7 $ 0.13 APM pro forma adjustments 5.2 0.06 1.4 0.02 Amortization expense, after tax 17.2 0.19 17.8 0.19 Adjusted pro forma net income / EPS $ 88.4 $ 0.96 $ 80.5 $ 0.87 Weighted average diluted shares 92.1 92.4 September 30, 2021 Reconciliation to Condensed Consolidated Statements of Income Avient EPS Net income from continuing operations $ 33.4 Net income attributable to noncontrolling interests 0.3 Net income from continuing operations attributable to Avient shareholders $ 33.7 $ 0.37 Special items, after tax $ 11.7 $ 0.13 APM pro forma adjustments 1.5 0.02 Amortization expense, after tax 17.6 0.19 Adjusted pro forma net income / EPS $ 64.5 $ 0.70 Weighted average diluted shares 92.2 Adjusted EPS may not recalculate due to rounding. 1 December 31, 2021 Year Ended December 31, 2021 Net income from continuing operations $ 11.2 $ 155.2 Net income attributable to noncontrolling interests 0.9 0.2 Net income from continuing operations attributable to Avient shareholders $ 12.1 $ 0.13 $ 155.4 $ 1.69 Special items, after tax $ 24.0 $ 0.26 $ 50.0 $ 0.54 APM pro forma adjustments 2.5 0.03 1.6 0.02 Amortization expense, after tax 17.8 0.19 71.1 0.77 Adjusted pro forma net income / EPS $ 56.4 $ 0.61 $ 278.1 $ 3.02 Weighted average diluted shares 92.4 92.1 Reconciliation of Color, Additives and Inks EBITDA Operating Income 88.8 86.3 66.8 61.2 303.1 94.5 93.6 Depreciation and amortization 27.4 25.3 26.6 26.4 105.7 26.0 25.9 EBITDA $ 116.2 $ 111.6 $ 93.4 $ 87.6 $ 408.8 $ 120.5 $ 119.5 Q1 2021 Q2 2021 Q3 2021 Pro forma Pro forma Pro forma Pro forma Pro forma Pro forma Operating Income 32.6 9.1 41.7 35.8 13.9 49.7 30.0 15.2 45.2 Depreciation and amortization 7.8 17.5 25.3 8.1 17.3 25.4 7.9 17.1 25.0 EBITDA $ 40.4 $ 26.6 $ 67.0 $ 43.9 $ 31.2 $ 75.1 $ 37.9 $ 32.3 $ 70.2 Q4 2021 YTD 2021 Pro forma Pro forma Pro forma Pro forma Operating Income 27.1 11.7 38.8 125.5 49.9 175.4 Depreciation and amortization 8.0 18.9 26.9 31.8 70.8 102.6 EBITDA $ 35.1 $ 30.6 $ 65.7 $ 157.3 $ 120.7 $ 278.0 2 Q1 2022 Q2 2022 Pro forma Pro forma Pro forma Pro forma Operating Income 38.3 15.4 53.7 35.2 17.7 52.9 Depreciation and amortization 7.8 16.6 24.4 7.7 16.6 24.3 EBITDA $ 46.1 $ 32.0 $ 78.1 $ 42.9 $ 34.3 $ 77.2 Q1 2021 Q2 2021 Q3 2021 Pro forma Pro forma Pro forma Pro forma Pro forma Pro forma Net income from continuing operations 60.4 (3.1) 57.3 50.2 1.4 51.6 33.4 1.5 34.9 Income tax expense 16.3 1.1 17.4 13.8 1.3 15.1 2.0 2.5 4.5 Interest expense 19.3 11.1 30.4 19.5 11.2 30.7 19.0 11.2 30.2 Depreciation and amortization 36.9 17.5 54.4 33.6 17.3 50.9 36.6 17.1 53.7 EBITDA 132.9 26.6 159.5 117.1 31.2 148.3 91.0 32.3 123.3 Special items, before tax 2.4 — 2.4 14.2 — 14.2 19.9 — 19.9 Depreciation included in special items (0.6) — (0.6) 1.4 — 1.4 (0.9) — (0.9) Adjusted EBITDA $ 134.7 $ 26.6 $ 161.3 $ 132.7 $ 31.2 $ 163.9 $ 110.0 $ 32.3 $ 142.3 Q4 2021 YTD 2021 Pro forma Pro forma Pro forma Pro forma Net income from continuing operations 11.2 2.5 13.7 155.2 1.6 156.8 Income tax expense 16.2 (1.9) 14.3 48.3 3.7 52.0 Interest expense 17.5 11.1 28.6 75.3 44.6 119.9 Depreciation and amortization 37.9 18.9 56.8 145.0 70.8 215.8 EBITDA 82.8 30.6 113.4 423.8 120.7 544.5 Special items, before tax 20.6 — 20.6 57.1 — 57.1 Depreciation included in special items (1.6) — (1.6) (1.7) — (1.7) Adjusted EBITDA $ 101.8 $ 30.6 $ 132.4 $ 479.2 $ 120.7 $ 599.9 3 Q1 2022 Q2 2022 Pro forma Pro forma Pro forma Pro forma Net income from continuing operations 64.7 2.6 67.3 62.8 5.2 68.0 Income tax expense 20.0 1.7 21.7 22.7 1.4 24.1 Interest expense 16.9 11.1 28.0 16.2 11.1 27.3 Depreciation and amortization 37.6 16.6 54.2 36.3 16.6 52.9 EBITDA 139.2 32.0 171.2 138.0 34.3 172.3 Special items, before tax 6.6 — 6.6 0.9 — 0.9 Depreciation included in special items (2.1) — (2.1) (1.1) — (1.1) Adjusted EBITDA $ 143.7 $ 32.0 $ 175.7 $ 137.8 $ 34.3 $ 172.1 Reconciliation of Specialty Engineered Pro Forma Sales Sales 214.7 238.9 231.7 226.3 911.6 243.1 242.3 Pro forma APM 98.9 108.8 93.8 94.9 396.4 94.8 100.5 Pro forma sales $ 313.6 $ 347.7 $ 325.5 $ 321.2 $ 1,308.0 $ 337.9 $ 342.8 Reconciliation of Avient Pro Forma Sales Sales 826.0 864.5 818.0 807.1 3,315.6 892.2 891.0 Pro forma APM 98.9 108.8 93.8 94.9 396.4 94.8 100.5 Pro forma sales $ 924.9 $ 973.3 $ 911.8 $ 902.0 $ 3,712.0 $ 987.0 $ 991.5 4 IR Slides V17 - 9.26 324pm IR Deck - AVNT-2022.09.27 Pre Release v2

HAMMERHEAD™ MARINE COMPOSITE PANELS APPLICATION & INSTALLATION GUIDE PRODUCT DESCRIPTION FEATURE BENEFIT Exceptional strength-to-weight ratio Lightweight yet strong structural performance and increased payloads Resistance to UV light, chemicals, moisture degradation and rot Resistance to harsh marine conditions Tough and impact resistant Durability and long product life Dimensionally stable Consistent performance in extreme temperature and humidity fluctuations Strong adhesive properties Easy bonding to various materials FEATURE BENEFIT Ready-to-install Fewer parts & reduced scrap Large format Improved aesthetics with seamless designs Made via continuous-fiber manufacturing process Consistent quality in every panel PERFORMANCE ADVANTAGES MANUFACTURING ADVANTAGES Hammerhead™ Marine Composite Panels are made from continuous glass- fiber reinforced thermoplastic face sheets and polyester foam cores. Stringers Bulkheads, Decking and Transoms Doors and Cabinetry Ceilings and Hatches MECHANICAL PERFORMANCE Superior strength-to-weight ratio PROPERTY TEST METHOD PANEL THICKNESS .50" .75" 1.00" 1.50" Core Density (lb/ft3) ISO 845 5.3 8.4 5.3 8.4 5.3 8.4 5.3 8.4 Flexural Rigidity (lb-in2) ASTM D7249 38,379 39,390 80,699 74,158 147,890 140,081 342,866 363,009 Panel Weight (lb/ft2) Calculated 0.93 1.07 1.03 1.25 1.14 1.42 1.35 1.77 Core Shear Yield (psi) ASTM C393 60 138 61 139 57 131 52 99 Max Load (lbs) ASTM C393 246 482 362 704 423 833 558 1,031 Core Shear ULT (psi) ASTM C393 81 159 81 153 70 138 62 113 Face Bend Stress (psi) ASTM C393 6,430 12,582 6,355 12,109 5,511 10,860 4,899 8,916 USES & APPLICATIONS SUPPORT SPAN DEFLECTION Meets performance required for marine applications Predictive deflection in various load cases. MARINE PLYWOOD Hammerhead™ panels are three times lighter than marine plywood MOISTURE ABSORPTION % weight change due to water absorption for selected composites and marine plywood 10000 60000 110000 160000 210000 260000 310000 360000 0.5 0.75 1 1.25 1.5 F le x u ra l R it y - lb / 2 Panel Thickness - in Hammerhead™ 5.3lb/in^3 Core Density Hammerhead™ 8.4lb/in^3 Core Density Plywood — Hammerhead™ 5.3 lb/ft3 Core Density — Hammerhead™ 8.4 lb/ft3 Core Density — Marine Plywood 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 0 10 20 30 40 50 60 70 80 90 100 % W t C a g Immersion Time - Days .50" Hammerhead™ .75" Hammerhead™ 1" Hammerhead™ 1.50" Hammerhead™ .50" marine plywood .75" marine plywood 1" marine plywood Fl ex ur al R ity - lb -in 2 INSTALLATION INSTRUCTIONS CUTTING & DRILLING Recommended blade: Industrial fine cut-off saw blade, 10" x 80 teeth 38° ATB grind with 5/8" bore, PTFE coating Recommended router bits: 3/8" diameter, 4 flute TiAlN (titanium aluminum nitride) coated carbide bit FORMING Apply localized 400˚F heat at a length proportional to the panel thickness (see equation below) and bend to shape.

FEATURE BENEFIT • Liquid technology • More accurate dose control • Less variation in melt flow and product IV • Can be coupled to an on-line rheometer • Shorter transition times • Does not require pre-drying • Less dust • Higher IV in melt phase • Improved uniformity when replacing virgin PET in PCR sheet • Eliminate/reduce solid phase polymerization (rPET) • Increased use of post consumer flake or re-grind (Sheet) • Reduced brittleness, less breakages and scrap • More consistent melt flow • Reduced cost • Higher productivity • Cleaner working environment PROCESS HIGHLIGHTS • Higher productivity • Cleaner working environment • New product designs and applications • Improved shelf appeal PET SHEET • Increases final IV • Less variation in product IV • More consistent melt flow • Increased use of flake or regrind • Shorter transition times • Reduced scrap • Reduced dust • Improved impact strength • Improved low temperature performance • Improved aesthetics Information and photographs supplied by Sunwell Global Ltd • Higher productivity • Improved sustainability • Lighter weight, higher strength • Properties comparable to PS packaging • Recyclable PET MONO/MULTI LAYERED SHEET XPET FOAM SHEET ROUND DIE • Improved melt flow consistency • Improved IV consistency • Increased recycle content • Reduced rejects and scrap • Increased product strength • Improved low temperature performance • Increase final IV • Increased use of regrind • Impossible to start up without it • Faster product changeover • Easier to cut • Increased strength • Lighter weight • Good sealing ColorMatrix™ rePrize is a PET compatible formulated liquid dispersion, designed to increase the polymer chain length via reactive extrusion.

Learn how polymers can improve heat management, reduce weight, and expand design freedom Light Weighting & Thermal Conductivity for Circuit Board Heat Exchanger Glow-in-the-dark controller grips gain comfortable advantage with Versaflex™ OM

Course evaluations, focus groups and program pilot techniques are utilized to gain insight to program effectiveness and monitor opportunities for enhancement. Polymeric, high molecular weight fluoropolymers are too large to cross biological membranes. Polymeric, high molecular weight fluoropolymers are too large to cross biological membranes.

CAP PRODUCER L U X U R Y B O T T L E C A P • A density modified solution - ABS filled 2.2g/cm3 • Incorporates post-consumer recycled ABS content • Ability to be metallized comparable to prime materials • Continuity of supply • Formulated a custom material with post- consumer recycled ABS content • Provided a more sustainable solution while keeping comparable performance characteristics to the prime grade previously used • Enabled customer to produce bottle top with weight, look and touch of metal, denoting luxury Gravi-Tech™ REC Recycled Formulation KEY REQUIREMENTS WHY AVIENT?

LEADING ARCHERY OEM C A M M O D U L E • Ability to pass fatigue testing of 100,000 cycles • Maintain low vibration performance • Replace metal to reduce weight • Meet short lead time and budget constraints • Provided design guidance and mold flow analysis, saving the customer $800 - $1,500 compared to outsourcing the analysis • Streamlined the development process using an existing, specialty product to meet key performance needs as well as budget and timeline constraints, enabling the customer to launch in time for a leading industry tradeshow Nymax™ PIR Nylon Formulation KEY REQUIREMENTS WHY AVIENT?

WHEELCHAIR OEM C A S T E R W H E E L • Composite to replace a traditional aluminum caster • Lightweight, strong material that can withstand the rigor of daily use • Corrosion-resistant solution to reduce cost and frequency of maintenance • Formulated two materials that chemically bond seamlessly to minimize slip • Reduced weight by 33% (280g), supporting improved user maneuverability • Offered an injection-moldable alternative to metal that led to a more functional design and reduced vibration Complēt™ Long Carbon Fiber Nylon 6/6 and TPU Formulations KEY REQUIREMENTS WHY AVIENT?

AVIENT SOLUTION LIGHTWEIGHTING + CYCLE TIME LEARN MORE • Achieved average weight reduction across molds of 7.75% • Achieved cycle time reduction of 15-20% • Provided key support with equipment and processing • Reduced energy consumption • Projected savings of $500,000 annually KEY REQUIREMENTS • Lightweighting • Cycle time improvement • Processing support to enable a seamless transition to begin using foam Copyright © 2020, Avient Corporation.

PERSONAL WATERCRAFT OEM S T E E R I N G C O L U M N • Similar strength performance to existing aluminum assembly • Withstand outdoor UV exposure • Weight reduction for improved performance • Corrosion and moisture resistance • Premium aesthetic • Provided a material that met application load requirements and allowed for part consolidation • Delivered confidence in changing material through design consultation, robust FEA support, and UV customization • Incorporated carbon fiber to support a marketing story Complēt™Hybrid Moisture Resistant Composite KEY REQUIREMENTS WHY AVIENT?