Microsoft PowerPoint - AVNT M11 Investor Presentation AVIENT CORPORATION I N V E S T O R P R E S E N T A T I O N (NYSE: AVNT) N O V E M B E R 2 0 2 4 D I S C L A I M E R Forward-Looking Statements Certain statements contained in or incorporated by reference into this presentation constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. For the same reasons, Avient is unable to address the probable significance of the unavailable information. 2 3 AVIENT OVERVIEW 2023 Financial ResultsCompany Overview Revenue By: 9,300 Employees 102 Manufacturing Sites 20,000+ Customers  Innovating materials and processing solutions to solve our customers’ challenges while enabling a sustainable world  Broad portfolio of technologies with market leading positions and flexibility to anticipate and meet customer needs  Focus is on organic revenue growth and margin expansion, following our successful portfolio transformation $3.14B Revenue $2.36 Adjusted EPS $502M Adjusted EBITDA 16.0% Adjusted EBITDA Margins $186M Adjusted Free Cash Flow U.S. & Canada EMEA Asia Latin America 64% 36% Specialty Engineered Materials Color Additives and Inks 41% 36% 18% 5% 7% 7% 23% 19% 9% 16% 10% 5% 4% Defense Healthcare Packaging Consumer Building & Construction Industrial Transportation Energy Telecom Geography Segment Industry 2024 Financial Guidance $525 to $530 million Adjusted EBITDA $2.63 to $2.67 Adjusted EPS 4 Industry Sustainability Standards ESG Ratings Performance 1 2 4 87th 94th percentile Avient CDP Score: A- SUSTAINABILITY PERFORMANCE AND RECOGNITION O C T O B E R 3 1 , 2 0 2 4 W E B C A S T P R E S E N TA T I O N 6 Q3 2024 HIGHLIGHTS • 8.5% organic sales growth driven by broad-based growth across all regions and most end markets in both CAI and SEM segments • Growth stemmed from gaining share, winning new product specifications and restocking in certain end markets • Both segments expanded YoY EBITDA margins by 40 bps each • Adjusted EPS of $0.65, an increase of 14% vs the prior year • Successfully refinanced $650M outstanding senior notes due 2025; extending maturity to 2031 • Increased dividend 5% to $1.08 on an annualized basis; 14th consecutive increase Adj. EBITDA $130 million +6% (+7% ex FX)Net Sales $815 million +8% (+8.5% ex FX) Net Sales $815 million +8% (+8.5% ex FX) Q 3 2 0 2 4 R E S U L T S TOTAL COMPANY ( Q 3 2 0 2 4 P E R F O R M A N C E V S Q 3 2 0 2 3 ) $754 $815 Q3 23 Q3 24 $123 $130 Q3 23 Q3 24 Sales Adjusted EBITDA (in millions) $0.57 $0.65 Q3 23 Q3 24 (in millions) Adjusted EBITDA Adjusted EPS 8 + 8% (+8.5% excluding FX) + 6% (+7% excluding FX) + 14% (+16% excluding FX) Sales 9 Q3 2 024 RESULTS – ORGA NI C REVENUE GROW TH BY REGI ON VS PY 9 US & Canada Latin America EMEA Asia +9% +5% +11% +27% Avient ex.

Certificate Number:Certificate Number: Certificate expiration date:Certificate expiration date: Effective date:Effective date: 31-10-202231-10-2022 30-10-202530-10-2025 Expiry date of previous cycle:Expiry date of previous cycle: 30-10-202230-10-2022 31-10-201631-10-2016 ES133794ES133794 Scope of certification:Scope of certification: MANUFACTURING OF MASTERBATCHES, ADDITIVESMANUFACTURING OF MASTERBATCHES, ADDITIVES AND COMPOUNDS FOR PIGMENTING THERMOPLASTICAND COMPOUNDS FOR PIGMENTING THERMOPLASTIC MATERIALS USED IN FOOD INDUSTRYMATERIALS USED IN FOOD INDUSTRY ISO 22000:2018ISO 22000:2018 POLIGONO INDUSTRIAL EZCABARTE, C/H, Nº3 - 31194 - ORICAIN - NAVARRA - ESPAÑA AVIENT ESPAÑA, S.L.AVIENT ESPAÑA, S.L. C/ Valportillo Primera 22-24, Edificio Caoba, 28108 Alcobendas - Madrid, España This certificate is valid, subject to the general and specific terms and conditions of certification servicesThis certificate is valid, subject to the general and specific terms and conditions of certification services STANDARDSTANDARD Bureau Veritas certification certifies that the Management System Bureau Veritas certification certifies that the Management System has been audited andhas been audited and found to be in accordance with found to be in accordance with the requirements of standard:the requirements of standard: Awarded toAwarded to CertificationCertification https://e-cer.bureauveritas.com/WJLVJDYG9LKV98RP6JCHF8NPSKES0NHDXDPLOWOT1TB290DE4LNZC0JCBAI2BVWEAZ1GJWC8BMDC2TXFBGVDXP3YXG0JLAVMFN3HLEWBLUWJGXCY5PAJ8QKKSTVJYSZ9M9 https://e-cer.bureauveritas.com/WJLVJDYG9LKV98RP6JCHF8NPSKES0NHDXDPLOWOT1TB290DE4LNZC0JCBAI2BVWEAZ1GJWC8BMDC2TXFBGVDXP3YXG0JLAVMFN3HLEWBLUWJGXCY5PAJ8QKKSTVJYSZ9M9 https://e-cer.bureauveritas.com/WJLVJDYG9LKV98RP6JCHF8NPSKES0NHDXDPLOWOT1TB290DE4LNZC0JCBAI2BVWEAZ1GJWC8BMDC2TXFBGVDXP3YXG0JLAVMFN3HLEWBLUWJGXCY5PAJ8QKKSTVJYSZ9M9 https://e-cer.bureauveritas.com/WJLVJDYG9LKV98RP6JCHF8NPSKES0NHDXDPLOWOT1TB290DE4LNZC0JCBAI2BVWEAZ1GJWC8BMDC2TXFBGVDXP3YXG0JLAVMFN3HLEWBLUWJGXCY5PAJ8QKKSTVJYSZ9M9 https://e-cer.bureauveritas.com/WJLVJDYG9LKV98RP6JCHF8NPSKES0NHDXDPLOWOT1TB290DE4LNZC0JCBAI2BVWEAZ1GJWC8BMDC2TXFBGVDXP3YXG0JLAVMFN3HLEWBLUWJGXCY5PAJ8QKKSTVJYSZ9M9 https://e-cer.bureauveritas.com/WJLVJDYG9LKV98RP6JCHF8NPSKES0NHDXDPLOWOT1TB290DE4LNZC0JCBAI2BVWEAZ1GJWC8BMDC2TXFBGVDXP3YXG0JLAVMFN3HLEWBLUWJGXCY5PAJ8QKKSTVJYSZ9M9 https://e-cer.bureauveritas.com/WJLVJDYG9LKV98RP6JCHF8NPSKES0NHDXDPLOWOT1TB290DE4LNZC0JCBAI2BVWEAZ1GJWC8BMDC2TXFBGVDXP3YXG0JLAVMFN3HLEWBLUWJGXCY5PAJ8QKKSTVJYSZ9M9 2022-12-15T10:52:43+0100 Authenticity and Integrity 2022-12-15T10:53:51+0100 BUREAU VERITAS CERTIFICATION

L A B O R ATO RY E Q U I P M E N T M A N U FA C T U R E R P C R W E L L P L A T E S • Very high level of TiO2 to prevent “cross-talk” between the wells during the qPCR fluorescence testing procedure • Minimized background phosphorescence caused by agglomeration of TiO2 and/or oxidized (stressed) polystyrene • Preservation of polystyrene grade properties • Change control of formulation and manufacturing process • Robust product quality from batch to batch • Developed optimally dispersed, ready-to-use white formulation that maintains adequate signal transmission, as well as minimizing “cross-talk” and background phosphorescence • Optimized the use of general purpose polystyrene (GPPS) for a good balance between melt flow and other physical properties, such as stiffness • Provided comprehensive change control of raw materials and formulation, with a robust manufacturing process and quality control under a third party ISO 13485:2016 certified QMS Mevopur Healthcare Colorants and Formulations – pre-colored solution WHY AVIENT?

PRODUCT BULLETIN PROPERTY TEST METHOD TYPICAL VALUE (ENGLISH) TYPICAL VALUE (SI) Specific Gravity ASTM D-792 11.0 11.0 Tensile Modulus1 ASTM D-638 1.20E+6 psi 8270 MPa Tensile Strength1 (Yield) ASTM D-638 3,950 psi 27.2 MPa Flexural Modulus ASTM D-790 800,000 psi 5520 MPa Flexural Strength ASTM D-790 7,000 psi 48.3 MPa Notched Izod Impact2 ASTM D-256A 2.1 ft•lb/in 110 J/m Deflection Temperature Under Load 66 psi (0.45 MPa), Unannealed, 0.250 in (6.35mm) ASTM D-648 280°F 138°C Deflection Temperature Under Load 264 psi (1.8 MPa), Unannealed, 0.250 in (6.35mm) ASTM D-648 190°F 87.8°C TECHNICAL PROPERTIES 1 Type I, 0.20 in/min (5.1 mm/min) 2 73°F (23°C), 0.125 in (3.18 mm), Injection molded www.avient.com Copyright © 2020, Avient Corporation.

ONFLEX™ LO 7120-45 ONFLEX™ HT 40A-3S2131 BERGAFLEX™ BFIG 45A-300 Applications HVAC Seals HVAC Seals HVAC Seals Interior - direct airflow Interior & exterior Interior - direct airflow HVAC feature Low VOC/FOG & odor Low VOC/FOG & odor Low odor Cold air Hot air Cold air VDA 270 ≤3.0 ≤3.0 ≤3.0 VOC/FOG VDA 278 (VOC) 97µg/g 100µg/g 196µg/g VDA 278 (FOG) 1131µg/g 1116µg/g 1707µg/g DIN 75201 (FOG) 0.3mg 1.7mg 1.1mg 73°F (23°C) 72 hrs 15% 12% 15% 158°F (70°C) 22 hrs 45% 28% 50% 212°F (100°C) 22 hrs 70% 45% 90% Density 1.15 g/ml 1.00 g/ml 1.17 g/ml Processing Injection Molding Injection Molding/ Extrusion Injection Molding Bonds to Polypropylene Polypropylene/ Polyethylene Polypropylene Hardness range 35–65 Shore A 40–70 Shore A 35–65 Shore A HOW GLS TPEs MAKE THE DIFFERENCE IN AUTOMOTIVE HVAC APPLICATIONS • Low VOC/FOG – externally tested to VDA 278 and shows significant reductions in volatile organic compounds and fogging when compared to current TPE technologies • Industry standards – helps to achieve VOC/ FOG performance standards for improved VIAQ • Reduced manufacturing steps – does not require pre-drying or post heating to reduce VOC in parts produced • Design optimization – color can be added at the machine • Easy to process – can be extruded, injection molded and extrusion blow molded • Recyclable – Our automotive TPEs are compatible with most municipal recycle streams • Global support – Avient automotive TPEs can be manufactured in locations that are convenient to your operations, including North America, Europe or China To learn more about GLS TPEs for automotive applications, contact Avient at +1.844.4AVIENT (+1.844.428.4368).

Page 93 2011 Highlights • Versus 2010, revenue growth of 9% drives 23% increase in adjusted operating income • Adjusted EPS expands 29% to all-time high of $1.02 Net Sales Adjusted Operating $1.02 Adjusted EPS $2,622 $2,643 $2,739 $2,061 $2,622 $2,864 Net Sales $88 $87 $72 $59 $147 $181 Adjusted Operating Income $0.12 $0.27 $0.21 $0.13 $0.79 $1.02 ($ millions) ($ millions) Page 94 2011 Highlights • Each platform contributed to our year over year operating income growth • Record OI achieved in Specialty and POD • Ten quarters of double-digit adjusted EPS expansion POD PP&SSpecialty Platform ROS%* 0.6% 1.5% 3.2% 4.3% 5.3% 8.4% 8.0% 2.9% 2.6% 3.0% 3.5% 4.0% 4.6% 5.6% 6.7% 5.5% 6.1% 3.1% 5.0% 7.0% 7.2% $20 $19 $22 $28 $25 $42 $56 O p e ra ti n g I n c o m e POD $76 $64 $66 $31 $33 $54 $62 O p e ra ti n g In c o m e PP&S $5 $13 $31 $46 $46 $87 $89 O p e ra ti n g I n c o m e Specialty Platform *ROS% is defined as adjusted operating income % of revenue ($ millions) Page 95 2011 Highlights • Continued portfolio repositioning � Sale of SunBelt equity investment � Acquisition of specialty companies ColorMatrix and Uniplen • World-class working capital of 9.6% maintained while improving on-time delivery to 94%improving on-time delivery to 94% 81% 87% 88% 95% 93% 92% 94% 2005 2006 2007 2008 2009 2010 2011 14.3% 16.2% 14.4% 18.9% 11.7% 9.6% 9.6% 2005 2006 2007 2008 2009 2010 2011 On-Time Delivery Working Capital % of Sales Page 96 First Quarter 2012 Highlights • Revenues increased 9% over Q1 2011 to a new quarterly record • Adjusted EPS increased 12% $0.26 $0.29 Q1 2011 Q1 2012 Adjusted EPS • Adjusted EPS increased 12% over prior year • All platforms delivered double-digit operating income growth Q1 2011 Q1 2012 $25.2 $14.7 $29.1 $17.8 $16.7 Specialty PP&S POD Q1 2011 Q1 2012 Adjusted Operating Income $14.3 ($ millions) Page 97 • Total Debt at 3/31/12 Less: Cash Net Debt • Available Liquidity $706 186 $520 $300 $360 $250 $300 $350 $400 $450 Debt Maturities As of March 31, 2012 ($ millions) Debt Maturities & Liquidity Summary – 3/31/12 • Available Liquidity Cash ABL Availability Total Liquidity • Net Debt / EBITDA* = 1.9x $186 156 $342 *Adjusted EBITDA TTM Pro forma for ColorMatrix $50 $300 $0 $50 $100 $150 $200 $250 2015 2017 2020 Page 98 • Repurchased 6 million shares in 2011 Share Share RepurchaseRepurchase • Introduced a quarterly dividend in Q1 2011 and increased in Q1 DividendsDividends • Expanding our sales, marketing, and technical capabilities is top Organic Organic GrowthGrowth • Targets that expand our: • Specialty offering • End market presence AcquisitionsAcquisitions Use of Cash Current Cash Balance = $186M Net Debt / EBITDA* = 1.9X • 7.9 million shares remain available for repurchase under the current authorization increased in Q1 2012 • Objective of maintaining and growing capabilities is top priority • Investing in operational and LSS initiatives • CAPEX • End market presence • Geographic footprint • Synergy opportunities • Adjacent material solutions *Adjusted EBITDA TTM Pro forma for ColorMatrix Page 99 Page 100

Key Features • Excellent heat & flame resistance • High chemical resistance • Low thermal shrinkage • Self-extinguishing flame retardant properties • Soft-hand yields good textile properties Disadvantages • Low tenacity • Low modulus FIBER-LINE® PROCESS FOR NOMEX® META-ARAMID • Coating • Twisting • Precision Winding FIBER-LINE® NOMEX® PRODUCTS • Packing Yarn • Wire Harness Yarn • Industrial Fabric Yarn Property UOM Value Breaking Tenacity g/d 5.0 Specific Gravity Ratio 1.38 Elongation @ Break % 30.0 Tensile Modulus g/d 125 Moisture Regain* % 4.5 Creep** % N/A Shrinkage*** % .4 Melt Point °C None Decomposition Temp. °C TBD Meta-Aramid Properties CHEMICAL COMPATIBILITY Chemical Resistance to Acid: Strength loss in H2SO4 below acid dew point. NOMEX® META-ARAMID DATA META-ARAMID (HM) BARE FIBER PERFORMANCE * Equilibrium moisture regain @ 55% RH ** Creep @ 40%-58% ultimate tensile strength *** Shrinkage in dry air @ 177 C for 30 minutes MOVING HIGH PERFORMANCE FIBERS FORWARD ABOUT FIBER-LINE® LOCATIONS Headquarters, R&D, Manufacturing FIBER-LINE® LLC 3050 Campus Drive Hatfield, PA 19440 +1 215.997.9181 fiber@fiber-line.com Manufacturing Operations FIBER-LINE® LLC 280 Performance Drive SE Hickory, NC 28602 +1 828.326.8700 fiber@fiber-line.com EMEA & Asia Pacific Operations FIBER-LINE® INTERNATIONAL B.V.

Abrasion Resistance Ultraviolet (UV) Resistance Flame Resistance Chemical Resistance (Acid Chemical Resistance (Alkali) Chemical Resistance (Organic Solvent) Strength Retention (H2O) O P P P P P P Property UOM Value Breaking Tenacity g/d 1.5 Specific Gravity Ratio 1.27 Elongation @ Break % 30.0 - 40.0 Tensile Modulus g/d 2.5 - 5.0 Moisture Regain* % 6.0 Creep** % N/A Shrinkage*** % < 0.1 Melt Point °C N/A Decomposition Temp. °C > 150 NOVOLOID NOVOLOID DATA Standard Modulus * Equilibrium moisture regain @ 55% RH ** Creep @ 40%-58% ultimate tensile strength *** Shrinkage in dry air @ 177 C for 30 minutes CHEMICAL COMPATIBILITY Chemical Resistance to Acid: Degrades in concentrated or hot Nitric and Sulfuric acid.

FIBER-LINE™ High Performance Synthetic Fibers PRODUCT SELECTION GUIDE FIBER-LINE™ HIGH PERFORMANCE SYNTHETIC FIBERS Kevlar® Para-Aramid Nomex® Meta-Aramid Vectran® LCP Zylon® PBO Carbon Fiber UHMWPE PET Polyester Fiberglass Novoloid Technora® Filament Yarn TECHNICAL PROPERTIES Standard Modulus High Modulus Standard Modulus Standard Modulus High Modulus Standard Modulus High Modulus Standard Modulus Standard Modulus High Modulus High Tenacity Low Shrink E-Glass S-Glass Standard Modulus Standard Modulus Breaking Tenacity (g/d) 23.0 23.6 5.0 23.0 30.0 42.0 42.0 23.0 28.0 38 9.3 8.4 6.0 - 7.3 6.7 - 9.4 1.5 28.0 Specific Gravity (Ratio) 1.44 1.44 1.38 1.40 1.40 1.54 1.56 1.80 0.97 0.97 1.38 1.38 2.58 2.48 1.27 1.39 Elongation at Break (%) 3.5 2.5 30.0 3.8 2.8 3.5 2.5 1.5 3.5 3.1 14.6 19.5 3.5 5.5 30.0 - 40.0 4.6 Tensile Modulus (g/d) 555 885 125 600 830 1200 1800 1480 850 1250 120 70 200–275 140–170 2.5–5.0 590 Equilibrium Moisture Regain at 55% RH (%) 5.0 5.0 4.5

Matrix Resin Fiber Reinforcement Fiber Content, by Weight (%) Epoxy E-CR or E-Glass >70% MATERIAL TECHNICAL DATA Property Test Procedure Rod Diameter 1.25 in (31.75 mm) 1.50 in (38.10 mm) Glass Transition Temp (Tg) ASTM 1356 100°C Minimum 100°C Minimum Water Absorption 24 hours at 50°C (122°F) ASTM D570 0.03% 0.03% Short Beam Strength (ILSS) ASTM 2344 8,400 psi (58 MPa) 9,200 psi (64 MPa) Transverse Shear Strength ASTM 7617 23,400 psi (160 MPa) 24,640 psi (170 MPa) Traceability Lot number shall be clearly marked on each package/shipment.