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On December 4, 2024, we presented our strategy at the New York Stock Exchange during our Investor Day. Annual Report | 2024 2 STOCK EXCHANGE LISTING Avient's Common Stock is listed on the New York Stock Exchange, Symbol: AVNT SHAREHOLDER INQUIRIES If you have any questions concerning your account as a shareholder, name or address changes, inquiries regarding stock certificates, or if you need tax information regarding your account, please contact our transfer agent: Equiniti Trust Company, LLC 1110 Centre Pointe Curve, Suite 101 Mendota Heights, MN 55120-4100 Phone: 1-855-598-2615 or 1-651-450-4064 www.shareowneronline.com Additional information about Avient, including current and historic copies of Annual Reports on Form 10-K and other reports filed with the Securities and Exchange Commission, is available online at www.avient.com or free of charge from: Investor Relations Avient Corporation 33587 Walker Road Avon Lake, Ohio 44012 Phone: 1-440-930-1000 ANNUAL MEETING The annual meeting of Avient will be held virtually via live webcast at 9:00 a.m. Avient Stock Performance The following is a graph that compares the cumulative total shareholder returns for Avient’s common shares, the S&P 500 index and the S&P Mid Cap Chemicals index, with dividends assumed to be reinvested when received.

Such is the case with a prominent and innovative healthcare leader who named us “Supplier of the Year” for the second year in a row. Share-Based Compensation Š We have share-based compensation plans that include non-qualified stock options, incentive stock options, restricted stock units, performance shares and stock appreciation rights (SARs). STOCK EXCHANGE LISTING PolyOne's Common Stock is listed on the New York Stock Exchange, Symbol: POL.

KEY CHARACTERISTICS • Multipurpose, multi-resin colorant concentrates • Formulated with high quality, heavy metal-free pigments • Carrier system designed for compatibility across different resin systems • Samples available with quick turnaround in small lots for customer evaluation • Available in a wide range of stock and standard colors* • Low LDRs—typically 1–3% • Low minimum order quantities for both stock and non-stock colors * Color availability dependent on region or country PRODUCT BULLETIN MARKETS AND APPLICATIONS Omnicolor Multipurpose Colorants can be used for injection molding, blow molding, or profile and sheet extrusion processes.

Transactions under Company Plans: This policy, other than any pre-clearance requirements in Section 8, does not apply to the exercise of an employee stock option if the exercise price is entirely paid in cash or a stock appreciation right settled and held in common shares under the Company’s equity plan(s). This policy does not apply to purchases of Company stock in the 401(k) plan resulting from your periodic contribution of money to the plan pursuant to your payroll deduction election. The policy does apply, however, to certain elections you may make under the 401(k) plan, including an election to make an intra-plan transfer of an existing account balance into or out of the Company stock fund. 14.

In certain cases throughout this presentation, we have presented GAAP and non-GAAP financial measures adjusted to reflect full- year 2012 Pro forma results, including Spartech and Glasforms and excluding discontinued operations Use of Non-GAAP Measures Page 3 PolyOne Commodity to Specialty Transformation • Volume driven, commodity producer • Heavily tied to cyclical end markets • Performance largely dependent on non- controlling joint ventures 2000-2005 2006 - 2009 2010 – 2014 2015 and beyond • Steve Newlin appointed, Chairman, President and CEO • New leadership team appointed • Implementation of four pillar strategy • Focus on value based selling, investment in commercial resources and innovation to drive transformation • 18 consecutive quarters of double- digit adjusted EPS growth • Shift to faster growing, high margin, less cyclical end markets • Key acquisitions propel current and future growth, as well as margin expansion • Established aggressive 2015 targets • Continue specialty transformation • Targeting $2.50 Adjusted EPS by 2015, nearly double 2013 EPS • Drive double digit operating income and adjusted EPS growth Confirmation of Our Strategy The World’s Premier Provider of Specialized Polymer Materials, Services and Solutions Specialization Globalization Operational Excellence Commercial Excellence -150.00% -50.00% 50.00% 150.00% 250.00% 350.00% 450.00% PolyOne S&P 500 Russell 2000 Dow Jones Chemical All time high of $39.28 April 4th, 2014 • 18 consecutive quarters of double digit EPS growth • 49% CAGR adjusted EPS expansion 2006-2013 • 2013 stock price increased 73% versus 30% growth in the S&P • More than seven fold increase in market cap: $0.5b $3.6b Strategy and Execution Drive Results Page 6 Appliance 4% Building & Construction 13% Wire & Cable 9% Electrical & Electronics 5% Consumer 10%Packaging 16% Industrial 12% HealthCare 11% Transportation 18% Misc. 2% 0.12 0.27 0.21 0.13 0.68 0.82 1.00 1.31 2.50 $0.00 $0.25 $0.50 $0.75 $1.00 $1.25 $1.50 $1.75 $2.00 $2.25 $2.50 2006 2007 2008 2009 2010 2011 2012 2013 2015 Target Ad ju st ed E ar ni ng s P er S ha re 2013 Revenues: $3.8 Billion End Markets 2013 Revenues: $3.8 Billion EPS Page 7 PolyOne At A Glance United States 67% Europe 14% Canada 7% Asia 6% Latin America 6% Specialty 54% PP&S 18% Distribution 28% Mix Shift Highlights Specialty Transformation Page 8 Old PolyOne Transformation *Operating Income excludes corporate charges and special items 2% 34% 43% 62% 64% 0% 20% 40% 80% 2005 2008 2010 2013 Q1 2014 2015 % o f O pe ra tin g In co m e* JV's Performance Products & Solutions Distribution Specialty 65-75% Specialty OI $5M $46M $87M $195M $60M Target 2015 Target Proof of Performance & 2015 Goals Page 9 2006 Q1 2014 2015 “Where we were” “Where we are” Target 1) Operating Income % Specialty: Global Color, Additives & Inks 1.7% 13.8% 12 – 16% Global Specialty Engineered Materials 1.1% 11.6% 12 – 16% Designed Structures & Solutions -- 6.5% 8 – 10% Performance Products & Solutions 5.5% 7.7% 9 – 12% Distribution 2.6% 6.1% 6 – 7.5% 2) Specialty Platform % of Operating Income 6.0% 64% 65 – 75% 3) ROIC* (after-tax) 5.0% 9.4% 15% 4) Adjusted EPS Growth N/A 42% Double Digit Expansion *ROIC is defined as TTM adjusted OI divided by the sum of average debt and equity over a 5 quarter period Bridge to $2.50 Adjusted EPS by 2015 2015 EPS: $2.50 2013 EPS: $1.31 Continued Gross Margin Expansion Mergers & Acquisitions Spartech Accretion Incremental share buybacks Ongoing LSS Programs (50-100 bps/yr) Accelerated Innovation & Mix Improvement Several Levers to Drive Growth Mid single digit revenue CAGR Innovation Drives Earnings Growth $20.3 $52.3 2006 2013 Research & Development Spending ($ millions) Specialty Platform Vitality Index Progression* *Percentage of Specialty Platform revenue from products introduced in last five years Page 11 14.3% 30.7% 2006 2013 Specialty Platform Gross Margin % 19.5% 42.0% 2006 Q1 2014 Healthcare Consumer Packaging and Additive Technology Transportation Page 12 Unique and Innovative Solutions https://www.dropbox.com/sh/dwe4t8aacvhb8ui/uD3p_bdglP/Presentation revise pics/GLS Beverage can closure XO 2.jpg https://www.dropbox.com/sh/dwe4t8aacvhb8ui/-YgkycKypw/Anti-Counterfeiting release & images/GN1979.JPG 60% 100% 20% 30% 40% 50% 60% 70% 80% 90% 100% 2008 2014 Pension Funding** As of March 31, 2014 Debt Maturities & Pension Funding – 3/31/14 Net Debt / EBITDA* = 1.9x $48 $317 $600 $0 $100 $200 $300 $400 $500 $600 $700 $800 2015 2020 2023 Debt Maturities As of March 31, 2014 ($ millions) Coupon Rates: 7.500% 7.375% 5.250% ** includes US-qualified pension plans only *TTM 3/31/2014 Free Cash Flow and Strong Balance Sheet Fund Investment / Shareholder Return $0.16 $0.20 $0.24 $0.32 $0.10 $0.20 $0.30 $0.40 2011 2012 2013 2014 Annual Dividend  Expanding our sales, marketing, and technical capabilities  Investing in operational and initiatives that drive profitability growth Manufacturing realignment  Targets that expand our: • Specialty offerings • End market presence • Geographic footprint • Operating Margin  Synergy opportunities  Adjacent material solutions  Repurchased 1.4 million shares in Q1 2014  Repurchased 6.4 million shares since April 2013  13.6 million shares are available for repurchase under the current authorization Organic Growth Acquisitions Share Repurchases Dividends The New PolyOne: A Specialty Growth Company Why Invest In PolyOne?

PRODUCT SELECTION GUIDE AESTHETIC APPEAL Custom Colors, Special Effects, Color Stability SOLUTION: Custom Polymer Colorants, Pre-Colored Materials POSSIBILITIES: Grips, Stocks, Frames, Magazine Bases DYNAMIC COMFORT Shock Absorption, Vibration Damping SOLUTION: Thermoplastic Elastomers POSSIBILITIES: Recoil Pads, Straps TACTILE EXPERIENCE Soft Touch, Wet Grip SOLUTION: Thermoplastic Elastomers POSSIBILITIES: Grips, Slides, Triggers PERFORMANCE & FUNCTION Custom Weight, Toughness, Reduced Machining, Metal Replacement, Thermal Management and Stability, Wear Resistance SOLUTION: Structural Reinforced Formulations, Super Tough Formulations, Composite Heat Release Technology, High-Density Modified Formulations, Internally Lubricated Formulations POSSIBILITIES: Stocks, Frames, Barrels 1.844.4AVIENT www.avient.com Copyright © 2024, Avient Corporation. 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

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