Avient Investor Day - December 4, 2024 Avient Q2 2025 Earnings - August 1, 2025 Morgan Conference - 3/1/2022

Avient Investor Day - December 4, 2024 Avient Q2 2025 Earnings - August 1, 2025 Morgan Conference - 3/1/2022

Platform operating income mix percentage 2005Y 2008Y 2011Y Global Specialty Engineered Materials $ 0.4 $ 17.6 $ 45.9 Global Color, Additives and Inks 4.3 28.1 43.4 Specialty Platform $ 4.7 $ 45.7 $ 89.3 Performance Products and Solutions 75.7 31.3 62.4 Distribution 19.5 28.1 56.0 SunBelt Joint Venture 91.9 28.6 5.0 Corporate (51.5) (425.1) 20.3 Operating income (loss) GAAP $ 140.3 $ (291.4) $ 233.0 Less: Corporate operating expense (income) 51.5 425.1 (20.3) Operating income excluding Corporate $ 191.8 $ 133.7 $ 212.7 Specialty platform operating mix percentage 2% 34% 42% Pro forma platform operating income mix percentage 2007 Pro forma 2011Y Specialty Platform $ 30.6 $ 89.3 Pro forma ColorMatrix - 27.7 Specialty Platform pro forma ColorMatrix $ 30.6 $ 117.0 Performance Products and Solutions 65.8 62.4 Distribution 22.1 56.0 SunBelt Joint Venture 34.8 5.0 Corporate (73.3) 20.3 Operating income pro forma ColorMatrix $ 80.0 $ 260.7 Less: Corporate and SunBelt operating income 73.3 (25.3) Operating income excluding Corporate operating income $ 153.3 $ 235.4 Specialty platform operating mix percentage 20% 50% Adjusted EPS 2006Y 2007Y 2008Y 2009Y 2010Y 2011Y Net Income $ 130.9 $ 40.9 $ (417.0) $ 106.7 $ 162.6 $ 172.6 SunBelt and OxyVinyls equity earnings, after tax (68.5) (26.1) (20.8) (19.0) (14.7) (3.7) Special items, after tax (21.2) 41.4 310.0 (31.0) 15.8 (30.5) Tax adjustments (30.0) (30.7) 147.2 (44.9) (88.3) (42.3) Adjusted net income $ 11.2 $ 25.5 $ 19.4 $ 11.8 $ 75.4 $ 96.1 Diluted shares 92.8 93.1 92.7 93.4 96.0 94.3 Adjusted EPS $ 0.12 $ 0.27 $ 0.21 $ 0.13 $ 0.79 $ 1.02 Adjusted EPS Q1 2011 Q1 2012 Net Income $ 110.2 $ 20.2 SunBelt equity earnings, after tax (3.7) - Special items, after tax (79.8) 6.1 Tax adjustments (1.5) 0.1 Adjusted net income $ 25.2 $ 26.4 Diluted shares 96.4 90.7 Adjusted EPS $ 0.26 $ 0.29 Platform sales and operating income (OI) 2005 2006 2007 2008 2009 2010 2011 Global Specialty Engineered Materials Sales $ 282.5 $ 345.3 $ 384.4 $ 514.0 $ 402.9 $ 517.4 $ 575.1 Global Color, Additives and Inks Sales 503.7 531.8 560.5 554.3 459.8 527.4 544.6 Specialty Platform Sales $ 786.2 $ 877.1 $ 944.9 $ 1,068.3 $ 862.7 $ 1,044.8 $ 1,119.7 Performance Products and Solutions Sales 1,136.3 1,166.2 1,086.8 1,001.4 667.7 776.3 865.4 PolyOne Distribution Sales 679.2 732.8 744.3 796.7 625.1 911.9 996.5 Corporate and Eliminations (151.1) (153.7) (133.3) (127.7) (94.8) (111.1) (118.1) Total Sales $ 2,450.6 $ 2,622.4 $ 2,642.7 $ 2,738.7 $ 2,060.7 $ 2,621.9 $ 2,863.5 Pro forma ColorMatrix Sales 196.0 Total sales pro forma ColorMatrix $ 3,059.5 Global Specialty Engineered Materials OI $ 0.4 $ 3.9 $ 4.9 $ 17.6 $ 20.6 $ 49.7 $ 45.9 Global Color, Additives and Inks OI 4.3 8.9 25.7 28.1 25.2 37.7 43.4 Specialty Platform OI $ 4.7 $ 12.8 $ 30.6 $ 45.7 $ 45.8 $ 87.4 $ 89.3 Performance Products and Solutions OI 75.7 64.2 65.8 31.3 33.1 54.0 62.4 PolyOne Distribution OI 19.5 19.2 22.1 28.1 24.8 42.0 56.0 Sunbelt Joint Venture OI 91.9 102.9 34.8 28.6 25.5 18.9 5.0 Corporate and eliminations (21.8) (4.6) (25.5) (28.9) (40.8) (32.5) (26.4) Special items (29.7) 39.1 (47.8) (396.2) 48.7 4.8 46.7 Operating income (loss) GAAP $ 140.3 $ 233.6 $ 80.0 $ (291.4) $ 137.1 $ 174.6 $ 233.0 Sunbelt equity income (72.5) (107.0) (40.8) (32.5) (29.7) (23.1) (5.7) Special items 29.7 (39.1) 47.8 396.2 (48.7) (4.8) (46.7) Operating income adjusted $ 97.5 $ 87.5 $ 87.0 $ 72.3 $ 58.7 $ 146.7 $ 180.6 Operating income pro forma ColorMatrix 27.7 Operating income adjusted pro forma ColorMatrix $ 208.3 Global Specialty Engineered Materials - OI as a percentage of sales 0.1% 1.1% 1.3% 3.4% 5.1% 9.6% 8.0% Global Color, Additives and Inks - OI as a percentage of sales 0.9% 1.7% 4.6% 5.1% 5.5% 7.1% 8.0% Specialty platform OI as a percentage of sales 0.6% 1.5% 3.2% 4.3% 5.3% 8.4% 8.0% Specialty platform OI as a percentage of sales - pro forma ColorMatrix 8.9% Global Color, Additives and Inks OI as a percentage of sales – pro forma ColorMatrix 9.6% PP&S operating OI as a percentage of sales 6.7% 5.5% 6.1% 3.1% 5.0% 7.0% 7.2% Distribution OI as a percentage of sales 2.9% 2.6% 3.0% 3.5% 4.0% 4.6% 5.6% PolyOne OI adjusted, as a percentage of sales 4.0% 3.3% 3.3% 2.6% 2.8% 5.6% 6.3% PolyOne OI adjusted, pro forma for ColorMatrix, as a percent of sales 6.8% Operating income (OI) Q1 2011 Q1 2012 Global Specialty Engineered Materials OI $ 14.0 $ 11.8 Global Color, Additives and Inks OI 11.2 17.3 Specialty Platform OI $ 25.2 $ 29.1 Performance Products and Solutions OI 14.3 17.8 PolyOne Distribution OI 14.7 16.7 Corporate and eliminations (1.6) (10.2) Special items 127.2 (8.5) Operating income (loss) GAAP $ 179.8 $ 44.9 Research and Development (R&D) – Pro forma ColorMatrix 2011 PolyOne R&D $ 36.9 ColorMatrix R&D 3.6 Pro forma R&D $ 40.5 Gross Margin as a percentage of Sales 2006 2011 2011 Pro forma ColorMatrix Specialty platform sales $ 877.1 $ 1,119.7 $ 1,315.7 Specialty platform gross margin 125.2 263.4 345.9 Specialty platform gross margin percentage 14.3 % 23.5 % 26.3 % Average Debt Q4 2010 Q1 2011 Q2 2011 Q3 2011 Q4 2011 Average PolyOne Debt $ 452.9 $ 432.9 $ 432.9 $ 432.9 $ 707.0 n/a Pro forma ColorMatrix 274.1 274.1 274.1 274.1 - n/a Total Debt $ 727.0 $ 707.0 $ 707.0 $ 707.0 $ 707.0 $ 711.0 Average Equity Q4 2010 Q1 2011 Q2 2011 Q3 2011 Q4 2011 Average PolyOne $ 516.0 $ 615.2 $ 629.6 $ 608.5 $ 588.3 $ 591.5

Versaflex™ & Versalloy™ Specialty Engineered Materials Thermoplastic Elastomers for Healthcare Applications Delivering specialized thermoplastic elastomer (TPE) solutions for demanding healthcare applications, Avient has performance-grade materials that are approved for USP VI, ISO 10993-4 and 10993-5. VERSAFLEX™ HC MEDICAL TUBING GRADES • Improve extrusion rates, achieve high service temperature performance or increase clarity in medical tubing • Traditional and bio- based formulations specifically for biopharmaceutical tubing to meet the needs for weldability and minimize extractables during processing VERSALLOY™ HC SERIES • Obtain better flow in long, thin paths and lower shrink rates versus typical TPVs with our alloys • Color easily and obtain a smooth tactile feel VERSAFLEX™ HC GASKETS & STOPPERS SERIES • Achieve no coring, good puncture and resealability in static stoppers • Meet low COF and low stiction requirements in dynamic seals VERSAFLEX™ CL E SERIES • Increase clarity and flexibility in bags, bottles and films • Mitigate risk with plasticizer-free formulations for film extrusion • Deliver excellent odor & O2 barrier performance for film extrusion INDUSTRY BULLETIN TPE HEALTHCARE PRODUCT SELECTOR GUIDE Versaflex™ HC Medical Tubing Grades Versaflex™ HC MT222 Clear 66A 0.88 14 - 334 2.30 629 4.34 898 6.19 430 220 36 ✔ ✔ High clarity, without plasticizersVersaflex™ HC MT224 Clear 75A 0.89 19 - 468 3.23 773 5.33 1360 9.40 530 321 56 ✔ ✔ Versaflex™ HC MT226 Clear 84A 0.88 20 - 606 4.17 885 6.10 1600 11.00 600 433 76 ✔ ✔ Versaflex™ HC MT317 Clear 68A 0.89 17 69 450 3.10 660 4.55 870 6.00 470 221 39 ✔ ✔ Very high service temperature Versaflex™ HC BT218 Natural 67A 0.89 19 69 381 2.60 683 4.70 1186 8.20 608 - - ✔ ✔ Weldable, kink resistant Versalfex™ HC BIO BT218 Natural 70A 0.88 18 58 416 2.87 668 4.60 1190 8.20 630 - - ✔ ✔ Weldable, kink resistant, contains 40% bio-derived content (Gen 1 biomass) Versaflex™ HC Gaskets & Stoppers Series Versaflex™ HC 2110-35N Natural 34A 0.90 19 47 145 1.00 261 1.80 400 2.76 620 97 17 ✔ ✔ Good resealing Versaflex™ HC 2110-43N Natural 43A 0.98 12 46 134 0.92 368 2.54 723 4.98 710 - - ✔ ✔ Good compression set Versaflex™ HC 2110-57B Black 59A 1.01 20 37 369 2.54 558 3.85 537 3.70 350 147 26 ✔ ✔ Low stiction Versaflex™ CL E Series Versaflex™ CL E85 Clear 84A 0.90 20 72 752 5.18 1160 8.00 1550 10.70 450 433 76 ✔ ✔ High clarity, without plasticizers; E95 also offers excellent odor & O2 barrier Versaflex™ CL E90 Clear 90A 0.90 27 73 1000 6.89 1230 8.50 1830 12.60 57 - - ✔ ✔ Versaflex™ CL E95 Clear 95A 0.90 38 71 1680 11.60 1730 11.90 2500 17.20 580 720 126 ✔ ✔ Versaflex™ HC 3810 Series Versaflex™ HC 3810-20N Natural 20A 0.88 16 54 123 0.80 185 1.30 342 2.40 650 - - ✔ - Formulated without animal derivatives, excellent colorability, translucent Versaflex™ HC 3810-30N Natural 30A 0.89 18 58 170 1.20 245 1.70 459 3.20 680 - - ✔ - Versaflex™ HC 3810-40N Natural 40A 0.88 19 59 191 1.30 275 1.90 506 3.50 670 - - ✔ - Versaflex™ HC 3810-50N Natural 50A 0.89 21 61 264 1.80 366 2.50 699 4.80 690 - - ✔ - Versaflex™ HC 3810-60N Natural 60A 0.88 24 65 459 3.20 594 4.10 790 5.40 510 - - ✔ - Versaflex™ HC 3810-70N Natural 70A 0.88 28 67 535 3.70 684 4.70 1000 6.90 570 - - ✔ - Versaflex™ HC 3810-80N Natural 80A 0.88 30 67 689 4.80 869 6.00 1390 9.60 620 - - ✔ - Versaflex™ HC 3810-90N Natural 90A 0.88 27 89 1087 7.50 1350 9.30 1890 13.00 570 - - ✔ - Versalloy™ HC 9210 Series Versalloy™ HC 9210-45N Natural 45A 0.89 19 39 160 1.10 320 2.20 484 3.33 480 100 18 - ✔ Smooth surface aestheticsVersalloy™ HC 9210-55N Natural 53A 0.89 20 44 208 1.44 335 2.31 580 4.00 610 120 21 - ✔ Versalloy™ HC 9210-70N Natural 70A 0.89 23 53 356 2.45 510 3.52 780 5.38 590 180 32 - ✔ Versalloy™ HC 9220 Series Versalloy™ HC 9220-70 Natural 70A 0.95 17 51 453 3.12 - - 643 4.43 265 208 36 ✔ ✔ ExtrudableVersalloy™ HC 9220-80 Natural 80A 0.94 18 59 553 3.67 777 5.36 945 6.52 415 208 36 ✔ ✔ Versalloy™ HC 9220-90 Natural 90A 0.94 25 55 1030 8.13 1350 9.33 1945 13.45 620 400 70 ✔ ✔ Standard Healthcare Grades Versaflex™ G2705N Natural 60A 0.88 - - - - 528 3.64 670 4.62 470 - - ✔ ✔ Natural, high strength Versaflex™ CL 2242 Clear 43A 0.89 23 - 152 1.05 294 2.02 731 5.00 780 124 22 ✔ ✔ High clarity, boilable Versaflex™ CL 2250 Clear 50A 0.89 20 - 220 1.52 337 2.32 827 5.70 770 140 25 ✔ ✔ Versaflex™ OM Series Versaflex™ OM 1040X Natural 42A 0.92 22 - 180 1.24 301 2.08 504 3.47 580 100 18 ✔ ✔ ABS/PC overmoldVersaflex™ OM 3060 Clear 59A 0.90 33 - 420 2.90 360 2.48 500 3.45 480 180 32 ✔ ✔ Versaflex™ OM 8940X-1 Clear 42A 0.91 - - 233 - 311 - 1573 - 1059 - - - - PK, COPE overmold Versaflex™ OM 4052 Natural 56A 1.01 27 - 271 - 557 - 1680 - 670 - - ✔ - Excellent chemical resistance; PK, PC, ABS, PC/ABS overmoldVersaflex™ OM 4063 Natural 54A 1.12 30 - 365 - 580 - 1640 - 670 - - ✔ - Color Hardness Specific Gravity Compression Set @ 23°C Compression Set @ 100°C 100% Modulus 300% Modulus Tensile Strength Elongation Tear Strength ISO 10993 USP VI Special Characteristics ASTM Shore A ASTM/ISO ASTM % ASTM % ASTM psi MPa ASTM psi MPa ASTM psi ISO MPa ASTM % ASTM pll ISO kN/m GENERAL PROPERTIES TENSILE PROPERTIES OTHER For further information on specific grades, review technical data sheets.

Avient Investor Day - December 4, 2024 Avient Q2 2025 Earnings - August 1, 2025 Morgan Conference - 3/1/2022

Avient Investor Day - December 4, 2024 Avient Q2 2025 Earnings - August 1, 2025 Morgan Conference - 3/1/2022

Avient Investor Day - December 4, 2024 Avient Q2 2025 Earnings - August 1, 2025 Morgan Conference - 3/1/2022

Avient Investor Day - December 4, 2024 Avient Q2 2025 Earnings - August 1, 2025 Morgan Conference - 3/1/2022

Avient Investor Day - December 4, 2024 Avient Q2 2025 Earnings - August 1, 2025 Morgan Conference - 3/1/2022

C ACCENT 4 V2 X NM 221679#SR-20466-4 Coyote Material or Material Number) has either 12 or 14 characters.