The Avient team used their extensive knowledge and experience working with high-density polymers to develop a specialized Gravi-Tech™ high-density polymer composite that met PolyCase’s needs and fit the profile of their proprietary injection molding process. By replacing lead with the Gravi-Tech formulation, PolyCase Ammunition avoids the regulatory, disposal and employee exposure challenges associated with lead.

Avient and Virginia Tech Collaborate: Industrial Design Students Challenged in Automotive Aftermarket Part Competition Avient and Virginia Tech Collaborate: Industrial Design Students Challenged in Automotive Aftermarket Part Competition on October 11, 2023.

Late payments will bear interest at the rate specified in the EC (Late Payment in Commercial Transactions) Regulations 2012 (as may be amended or replaced from time to time). If the parties cannot agree upon and implement such changes within sixty (60) days after such notice, Seller shall thereupon have a right to terminate this contract forthwith by written notice to Buyer. 8.

Stat-Tech™ Fire Alarm Stat-Tech™ ST7400-8010 ESD Formulations improved electrical conductivity for fire alarm A look at six tech segments poised for growth, and actionable ideas to boost product performance

Stat-Tech™ Fire Alarm Stat-Tech™ ST7400-8010 ESD Formulations improved electrical conductivity for fire alarm A look at six tech segments poised for growth, and actionable ideas to boost product performance

Distinguished Gravi-Tech™ high-density closures are focused on luxury perception as showcased in the spirits industry Gravi-Tech™ density modified formulations replaces brass in pipe valve Distinguished Gravi-Tech™ high-density closures are focused on luxury perception as showcased in the spirits industry (English language version)

Stat-Tech™ Static Dissipative & Electrically Conductive Formulations How Avient Can Help Avient’s ultra-pure Stat-Tech™ Static Dissipative Formulations are polymeric formulations that combine select engineered resins with conductive additives such as carbon powder, carbon fiber, nickel-coated carbon fiber, and stainless steel fiber, that provide the precise level of electrical conductivity required for your application. Depending on your application’s performance needs, Avient can develop a custom Stat-Tech formulation to provide anti-static properties, dissipation, conduction, and electromagnetic and radio frequency interference (EMI/RFI) shielding.    

ENGINEERED POLYMER SOLUTIONS - FEATURES & CHARACTERISTICS Resin Nymax™ Formulations Characteristics Applications PA6 GF 600 A 14 Natural 14% Glass Reinforced Stocks, Frames, Receivers, Handguards, Forearms, Picatinny Rails, Grips PA6 GF 600 A 33 Natural 33% Glass Reinforced, Heat Stabilized PA6 NM6000-0026 HI BK 33% Glass Reinforced, Toughened PA6 GF 600 A 60 UV Black 60% Glass Reinforced, Heat Stabilized PA6 GF 600 A 33 Black 28 V 33% Glass Reinforced, Heat Stabilized, UV PA6 1010 A Black 13 Super Toughened, Heat Stabilized PA6 1010 A Natural Super Toughened, Heat Stabilized PA6 NM6000-0027 ST Black Super Toughened PA6 NM6000-00013 HS UV Black 50% GF, High Flow PA6 PA66 NM6600-0018 HI HS 14 Nat 14% Glass Reinforced, Toughened, Heat Stabilized PA66 GF 1200 A 33 HS Black 22 33% Glass Reinforced, Heat Stabilized PA66 GF 1200 A 33 HS Natural 33% Glass Reinforced, Heat Stabilized PA66 NM6600-0019 HI HS 33 Nat 33% Glass Reinforced, Toughened, Heat Stabilized PA66 NM6600-0020 HI HS 43 Nat 43% Glass Reinforced, Heat Stabilized PA66 1200 A L Natural Unreinforced PA66 1200 A ZIP 22 Natural Unreinforced PA66 NM6600-0021 ST Black Super Toughened PA66 NM 1200 MT HS Black Toughened, Heat Stabilized PA66 NM 1200 MT HS Natural Toughened, Heat Stabilized Specialty Products Color Characteristics Applications Edgetek™ ET6200-0031 Black Black 20% Glass Reinforced PA12 Stocks, Frames, Receivers, Handguards, Forearms, Picatinny Rails, Bolt Carriers, Grips Gravi-Tech™ X GT 33991-05A-01-3 Copper 3sg, PA6, Copper Gravi-Tech™ X GT-30197-001-P4 Gray 4sg, PA610, Tungston Gravi-Tech™ GT 6400-0001 GRV 5.0 Black 5sg, PA610, Tungston Thermoplastic Elastomers Durometer OM Substrate Color Characteristics Applications OnFlex™ AF 7210 25-90A PP Black/Natural General Purpose with UV Stabilizer Grips, Recoil Pads, Gun Straps Dynaflex™ G7900 30-90A PP Black/Natural General Purpose Versaflex™ XP 2850 50A PP Natural Wet Grip Technology Versaflex™ VDT 4202-40 40A PP Black/Natural Vibration Damping Versaflex™ VDT 5120-40 40A PA Black/Natural Vibration Damping Versaflex™ OM6059-9 60A PA Black High Flow Versaflex™ OM6258 60A PA Black/Natural Enhanced Bond

You are advised to consult any further disclosures we make on related subjects in our reports on Form 10-Q, 8-K and 10-K that we provide to the Securities and Exchange Commission. Deliver cumulative annual revenue growth from sustainable solutions portfolio of 8-12% Assess top 90% of supplier spend for alignment with Avient Sustainability objectives. Develop and implement solutions to end plastic waste while supporting AEPW $1.5B investment in key initiatives. 2030 SUSTAINABILITY TARGETS 20 2021 AVIENT INVESTOR DAY 21 • Investor Day to be held December 9, 2021 in New York, NY • Company will provide updates on its key growth drivers with a deep focus on sustainable solutions Revenue Growth Drivers Long-Term Growth Rate Sustainable Solutions 8–12% Healthcare 8–10% Composites / 5G 10% Growth in Asia / LATAM 5% Other (GDP growth) 2–3% Avient 6.5% • Senior leadership team to also present on Clariant MB integration, M&A opportunities and capital allocation priorities PEER COMPARISONS 22 As a specialty formulator, we don’t require significant capital investment, as compared to the base resin raw material suppliers we purchase from.

Continue fostering our Great Place to Work® culture Strategic Objectives Long Term Growth Rates Growth Drivers $340 $455 $790 $1,120 $51 $84 $212 $650 $108 $113 $231 $230 $265 $358 $726 $730 8-12% 8-10% 8-10% 5% Sustainable Solutions Composites Healthcare Asia/Emerging Regions Profitable Growth Great Place to Work 5.4% 10.9% 2006 2014 2023E EBITDA Margins $0.14 $1.93 2006 2014 2023E TOP-TIER SUSTAINABILITY PERFORMANCE AND RECOGNITION Industry Sustainability Standards ESG Ratings Performance 1 3 5 5 87th 94th percentile Innovation is the lifeblood of a specialty company. GUIDANCE $800 $754 $128 $123 Sales Adjusted EBITDA $0.56 $0.57 13 • Demand impacted by destocking and cautious customer sentiment • Positive net price benefit: o CAI - Pricing flat and raw material deflation o SEM - Pricing flat with unfavorable mix related to healthcare, more than offset with raw material deflation • Cost reductions driven by Clariant synergies and reduced administrative costs Q3 EBITDA BRIDGE ($ millions) CAI: Price / Mix -) Deflation 22) SEM: Price / Mix (6) Deflation 13) Net Price Benefit 29) Cost Reductions 13) Wage Inflation (8) FX 1) Q3 2023 Actual $ 123) Adjusted EBITDA Q3 2022 Pro Forma $ 137) Demand (49) 14 2023 G U I DAN CE Q4 2023 GUIDANCE VS. PRIOR YEAR $790 $710 2022 2023 $107 $112 2022 2023 Sales Adjusted EBITDA $0.42 $0.47 2022 PF 2023 - 10% + 5% + 12% Sales Adjusted EBITDA Adjusted EPS 16 $112 $500 $0.47 Q4 AND FULL YEAR 2023 GUIDANCE $710 $3,130 Sales Adjusted EBITDA Adjusted EPS 17 (in millions) (in millions) Guidance: Free Cash Flow $180 $180 Prior Guidance Guidance FREE CASH FLOW & INCREASED DIVIDEND 13th Consecutive Dividend Increase 0.16 0.26 0.42 0.58 0.79 0.85 0.99 1.03 2011 2013 2015 2017 2019 2021 2023 2024 S U S TAI NABI L I T Y DAY RE CAP SUSTAINABILITY AS A GROWTH DRIVERLONG-TERM REVENUE GROWTH DRIVERS 60%+ Key Growth Drivers Sustainable Solutions Composites, Healthcare, Asia / LATAM Overlap Other (GDP Growth) Total Company Revenue Growth Drivers Long-Term Growth Rate Sustainable Solutions 8–12% Composites 8–10% Healthcare 8–10% Asia / LATAM 5% Other (GDP growth) 0–2% Avient 6% SUSTAINABILITY TRENDS DRIVE LONG-TERM GROWTH 8-12% Long Term Growth 50 90 2022 2030 Medical Plastics Market Size (in $Billions) 2020 2030 Recycled Plastics Virgin Plastics Growing Demand for Recycled Content Avient Sustainable Solutions 46 2023 2032 Global Offshore Annual Wind Installations (in Gigawatts) Sources: McKinsey, Bloomberg, Grand View Research SUSTAINABILITY TRENDS DRIVE LONG-TERM GROWTH 21 • Transformative acquisitions combined with divestitures of more cyclical businesses have improved margins over 400 bps since 2018 • 20% long-term margin goal to be driven by key growth drivers, with sustainable solutions playing a meaningful role 5.4% 11.5% 2006 2018 2023E Recovery Growth Drivers Strategic Objective 20%+ +1%+ +3%+ ADJUSTED EBITDA MARGIN EXPANSION 22 • 6% annualized long-term sales growth leveraging sustainable solutions, composites, healthcare, and emerging regions • Expand EBITDA margins to 20% • Deliver annual EBITDA and EPS growth of 10% and 15% • Maintain asset-light, 80% free cash flow conversion profile and be valued as a specialty formulator • Continue fostering our Great Place to Work® culture CREATING A WORLD-CLASS SUSTAINABLE ORGANIZATION 23 PEER COMPARISONS AVIENT IS ASSET LIGHT Capex / Revenue 2023E (%) Avient Specialty Other Specialty / Note: Avient reflects 2023 estimated revenue of $3,130 and estimated run-rate CAPEX of $110M. 26 3.5 1.8 2.7 3.0 3.4 3.7 2.8 3.7 4.6 5.0 6.9 7.0 8.6 11.1 Av ie nt PP PM FM C N C FREE CASH FLOW CONVERSION Note: Free cash flow conversion calculated as (Adjusted EBITDA – Capex) / Adjusted EBITDA.