Streamlined organization with fewer business units to reduce internal complexity and better serve customers 1 2 3 4 Specialty Engineered Materials SEGMENT STRATEGIC REVIEW Chris Pederson AVIENT INVESTOR DAY December 4, 2024 Copyright © . Drive COGS reduction - raw material actions, manufacturing, supply chain optimization 1 2 3 4 Summary and financials Jamie Beggs AVIENT INVESTOR DAY December 4, 2024 Copyright © . All Rights Reserved 2024 61 History of balanced capital deployment $0 .1 6 $0 .2 0 $0 .2 6 $0 .3 4 $0 .4 2 $0 .5 0 $0 .5 8 $0 .7 2 $0 .7 9 $0 .8 2 $0 .8 8 $0 .9 6 $1 .0 0 $1 .0 3 $1 .0 8 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 Dividend $ per shareAdj.

P'210614) 1 Rothausstrasse 61 4't 32 Muttenz Ei Lö Zweck Ei Lö weitere Adressen 1 Die Gesellschaft bezweckt den Erutrerb, die Verwaltung und Veräusserung von Beteiligungen an Unternehmen, die auf dem Gebiete der Chemie und venruandten Gebieten tätig sind, insbesondere im Bereich Kunststoffe und Beschichtungen, namentlich, aber nicht ausschliesslich, Kunststoffpräparationen, Additive und Pigmente. Seite / ld 1 2 4016 6281 07.08.2020 02.12.2020 155 238 12.08.2020 07.12.2020 1 004956355 1 005040881 Ei Ae Lö Personalangaben Funktion Zeichnungsart 1 1 I 1 1 1 1 1 1 1 1 I 1 1 1 1 1 1 I 1 1 1 1 1 1 1 2 2 2 2 2 2m 2m 2m ;'riger-rn cuxemburg(tu) igeftn enqi+s) infietden Högemann, Dr. Beglaublgter Auszug Handelsregister des Kantons Basel-Landschaft T13r***o., Arlesheim,04.1 07:34 BM

TEMPERATURE Material Rear °F (°C) Center °F (°C) Front °F (°C) Nozzle °F (°C) Melt °F (°C) Mold °F (°C) Nylon 6,6 14% NiCF 540–570 (280–300) 530–560 (275–290) 530–560 (275–290) 540–570 (280–300) 540–570 (280–300) 200–300 (90–150) Nylon 6,6 30% SS 540–570 (280–300) 530–560 (275–290) 530–560 (275–290) 540–570 (280–300) 540–570 (280–300) 200–300 (90–150) PBT 14% NiCF 510–410 (265–280) 490–540 (255–280) 480–530 (250–275) 480–530 (250–275) 480–530 (250–275) 150–250 (65–120) PC 14% NiCF 540–570 (280–300) 540–570 (280–300) 530–560 (275–290) 530–560 (275–290) 530–560 (275–290) 150–250 (65–120) ABS 14% NiCF 470–520 (240–270) 460–520 (240–270) 460–520 (240–270) 460–530 (240–275) 460–530 (240–275) 100–200 (40–90) PP 14% NiCF 440–480 (225–250) 440–480 (225–250) 430–470 (220–245) 420–460 (215–240) 420–460 (215–240) 125–175 (50–80) DRYING Material Temperature °F (°C) Time Minimum Moisture Maximum Moisture Nylon 6,6 14% NiCF 180 (80) 4–5 hours 0.05% 0.20% Nylon 6,6 30% SS 180 (80) 4–5 hours 0.05% 0.20% PBT 14% NiCF 250 (120) 6-8 hours 0.02% 0.03% PC 14% NiCF 250 (120) 3–4 hours 0.02% 0.02% ABS 14% NiCF 200 (90) 2–4 hours 0.05% 0.10% PP 14% NiCF 180 (80) 2–4 hours 0.20% 0.30% Equipment • Feed throats smaller than 2.5" may cause bridging due to pellet size - Larger feed throats will be more advantageous with long fiber EMI shielding resins • General purpose metering screw is recommended - Mixing/barrier screws are not recommended • L/D ratio - 18:1–20:1 (40% feed, 40% transition, 20% metering) • Low compression ratio - 2:1–3:1 • Deep flights recommended - Metering zone 3.5 mm - Feed zone 7.5 mm • Check ring - Three-piece, free-flowing check ring • General purpose nozzle (large nozzle tips are recommended) - Minimum orifice diameter of 7/32" - Tapered nozzles are not recommended for long fiber EMI shielding resins • Clamp tonnage: - 2.5–5 tons/in2 Gates • Large, free-flow gating recommended - 0.25" x 0.125" land length - 0.5" gate depth Runners • Full round gate design • No sharp corners • Minimum of 0.25" diameter • Hot runners can be used PROCESSING Screw Speed Slower screw speeds are recommended to protect fiber length Back Pressure Lower back pressure is recommended to protect fiber length Pack Pressure 60–80% of max injection pressure Hold Pressure 40–60% of max injection pressure Cool Time 10–30 seconds (depends on part geometry and dimensional stability) PROCESS CONSIDERATIONS Recommended – retain fiber length (maximize conductivity) • Low shear process • Low screw speed and screw RPM • Slow Injection speed • Fill to 99–100% on first stage of injection - Reduces potential nesting of fibers at gate location - Improves mechanical performance near gate location - Promotes ideal fiber orientation Resin Rich Surface • Achieved when using a hot mold temperature and longer cure times ≥ Max mold temperature recommendation • Improved surface aesthetic • Reduced surface conductivity • Could reduce attenuation performance in an assembly Fiber Rich Surface • Achieved when using a cold mold temperature and shorter cure times ≤ Minimum mold temperature recommendation • Improved surface aesthetic • Reduced surface conductivity • Could improve attenuation performance in an assembly www.avient.com Copyright © 2020, Avient Corporation.

Clinton, Tennessee Seabrook, Texas (1) 4. Shanghai, China (4) 34. Level 1 assets are valued based on quoted market prices.

Committees: 1, 4 KIM ANN MINK, Ph.D. Committees: 1, 2 COMMITTEES 1. Environmental, Health and Safety 4.

KEY PROPERTIES AND PERFORMANCE FR GRADES H GRADES PEEK GRADES LCP GRADES FLEX GRADES PROPERTIES CONDITION ISO UNIT PPE400FR PPE700FR PPE950FR PPE1200FR H1500HF H2300HF PEEK700 PEEK900 PEEK1000 PEEK1200 LCP650 LCP800 LCP950 FLX400 FLX700 FLX1100 Dielectric Constant (Dk) 2.4 GHz 4.0 7.0 9.5 12.0 15.0 23.0 7.0 9.0 10.0 12.0 6.5 8.0 9.5 4.0 7.0 11.0 Loss Tangent (Df) 2.4 GHz 0.0030 0.0039 0.0042 0.0045 0.0010 0.0037 0.0024 0.0025 0.0024 0.0027 0.0043 0.0045 0.0047 0.0010 0.0009 0.0012 Density 1183 g/cm3 1.44 1.97 2.20 2.50 2.60 3.40 1.94 2.20 2.30 2.40 2.00 2.15 2.30 1.52 1.93 2.50 Melt Flow Index (MFI) 5 kg, 300 °C (unless noted) 1113 g/10 min 17 12 13 5 5 8 15 @ 380 °C 13 @ 380 °C 10 @ 380 °C 6 - - - 11 @ 230 °C 2 @ 230 °C 0.3 @ 230 °C Tensile Strength at Break 23 °C/73 °F 527 MPa 47 52 44 45 23 40 64 62 65 67 75 80 75 11 17 25 Flexural Modulus 23 °C/73 °F 178 MPa 3100 4500 - 9300 2100 5000 6200 7600 9200 11000 8000 8500 8500 1400 1600 2900 Unnotched Izod 23 °C/73 °F 180 kJ/m2 NB 42 20 9 17 10 28 25 18 15 31 20 12 NB NB NB -20 °C/-4 °F 180 kJ/m2 - - - - 17 10 - - - - - - - - - Notched Izod 23 °C/73 °F 180 kJ/m2 14 6 4 3 5 4 6 4 4 4 10 6 4 59 23 13 -20 °C/-4 °F 180 kJ/m2 - - - - 5 4 - - - - - - - - - - STANDARD GRADES RADOME GRADES PROPERTIES CONDITION ISO UNIT PPE260 PPE300 PPE320 PPE350 PPE400 PPE440 PPE500 PPE650 PPE800 PPE950 PPE1200 RS260 RB260 RS265FR Dielectric Constant (Dk) 2.4 GHz 2.6 3.0 3.2 3.5 4.0 4.4 5.0 6.5 8.0 9.5 12.0 2.6 2.6 2.7 Loss Tangent (Df) 2.4 GHz 0.0009 0.0009 0.0010 0.0009 0.0009 0.0009 0.0009 0.0009 0.0009 0.0009 0.0010 0.0009 0.0012 0.0032 Density 1183 g/cm3 1.07 1.18 1.21 1.27 1.43 1.50 1.62 1.86 2.10 2.20 2.40 1.06 1.08 1.09 Melt Flow Index (MFI) 5 kg, 300 °C 1113 g/10 min 15 15 16 14 14 14 15 11 10 4 2 21 16 25 Tensile Strength at Break 23 °C/73 °F 527 MPa 40 45 47 50 50 48 45 43 37 37 36 50 42 52 Flexural Modulus 23 °C/73 °F 178 MPa 2700 2400 2000 2600 2800 2700 2600 2600 2300 2600 2600 2200 2200 2600 Unnotched Izod 23 °C/73 °F 180 kJ/m2 NB NB NB NB NB NB NB NB 50 28 24 NB NB NB -20 °C/-4 °F 180 kJ/m2 NB NB NB NB NB NB NB 50 47 27 25 NB NB NB Notched Izod 23 °C/73 °F 180 kJ/m2 8 55 69 35 22 20 15 9 8 5 4 19 14 11 -20 °C/-4 °F 180 kJ/m2 8 15 20 14 12 10 9 8 8 5 4 10 12 10 PREPERM™ SERIES PROPERTIES CONDITION ISO UNIT 8027 8025 8037 8019 8028 8026 8044 8029 8041 8045 8048 8036 8056 8031 Dielectric Constant (Dk) 1 GHz, 23 °C 3.0 3.1 3.4 3.6 3.8 4.4 4.8 5.3 5.4 5.9 6.0 7.0 7.3 9.0 Loss Tangent (Df) 1 GHz, 23 °C 0.0012 0.0012 0.0008 0.0010 0.0010 0.0010 0.0004 0.0008 0.0006 0.0002 0.0006 0.0007 0.0002 0.0007 Density 1183 g/cm3 1.25 1.26 1.35 1.39 1.45 1.59 1.72 1.75 1.79 1.89 1.88 2.06 2.086 2.25 Melt Flow Index (MFI) 5 kg, 300 °C 1113 g/10 min 16 19 10 11 15 13 10 10 15 15 19 10 18 4.7 Tensile Strength at Break 23 °C/73 °F 527 MPa 59 54 54 62 59 54 52 58 52 45 49 45 37 38 Flexural Modulus 23 °C/73 °F 178 MPa 2780 2560 2850 3060 3350 3700 3157 4300 4320 3137 4150 3370 2560 4200 Notched Izod 23 °C/73 °F 180 kJ/m2 15.3 14 14.8 14 12.6 10.4 9.9 8.6 7.4 7.9 6.6 7.1 6.2 6.8 EDGETEK™ 7600 SERIES Copyright © 2021, Avient Corporation.

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TERMS AND CONDITIONS These Terms and Conditions govern the sale of Products to another (“Buyer”) by Avient Corporation and its affiliates (“Seller”). 1. Upon receipt of a notice of an alleged claim, Seller may suspend all further deliveries. 4. Terms and Conditions (April 1, 2024)

Upon receipt of a notice of an alleged claim, Seller may suspend all further deliveries. 4. Seller may terminate this contract at its sole option upon 14 calendar days’ written notice to Buyer. 24. Terms and Conditions (April 1, 2024)

Upon receipt of a notice of an alleged claim, Seller may suspend all further deliveries. 4. Seller may terminate this contract at its sole option upon 14 calendar days’ written notice to Buyer. 24. Terms and Conditions (December 1, 2024)