They are based on management’s expectations that involve a number of business risks and uncertainties, any of which could cause actual results to differ materially from those expressed in or implied by the forward-looking statements. FX +8.5% FX -0.4% Total Avient +8.1% Note: Regional Sales Percentages exclude impact of foreign exchange COLOR, ADDITIVES & INKS SEGMENT (Q3 2024 PERFORMANCE VS Q3 2023) $487 $522 Q3 23 Q3 24 $89 $97 Q3 23 Q3 24 Sales Adjusted EBITDA (in millions) (in millions) Sales Adjusted EBITDA 10 + 7% (+8% excluding FX) + 9% (+11% excluding FX) 18.3% +40 bps *18.7% * * Adjusted EBITDA Margin % • Sales growth driven by winning new product specifications in consumer & packaging, strong underlying demand in healthcare and improving demand in building & construction • Favorable mix and raw material deflation contributed to EBITDA margin expansion SPECIALTY ENGINEERED MATERIALS SEGMENT (Q3 2024 PERFORMANCE VS Q3 2023) $268 $295 Q3 23 Q3 24 $51 $57 Q3 23 Q3 24 Sales Adjusted EBITDA (in millions) (in millions) Sales Adjusted EBITDA 11 • Sales growth driven by restocking in healthcare & consumer end markets and strong underlying demand for composite applications used in building & construction, energy and defense end markets • Favorable mix contributed to EBITDA margin expansion + 10% (+10% excluding FX) + 12% (+13% excluding FX) 19.0% +40 bps *19.4% * * Adjusted EBITDA Margin % 2024 G U IDA N CE FY 2024 GUIDANCE Previous (Aug 6) Current Adjusted EPS $2.55 to $2.70 $2.63 to $2.67 Adjusted EBITDA $515 to $540 million $525 to $530 million Interest Expense $105 million $104 million Adjusted Effective Tax Rate 23% to 25% 23% to 25% Capital Expenditures & Investment in S/4 Hana ~$140 million ~$140 million 13 14 • Investor Day to be held December 4, 2024 at the NYSE, beginning at 10AM • The focus will be to do a deep dive on the Company’s strategy • Registration available at www.avient.com/investors 2024 AVIENT INVESTOR DAY AP P EN D IX 17 Performance Additives 15% Pigments 13% TiO2 9% Dyestuffs 2% Polyethylene 10%Nylon 5% Polypropylene 4% Styrenic Block Copolymer 4% Other Raw Materials 38% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials RAW MATERIAL BASKET SEGMENT DATA U.S. & Canada 41% EMEA 36% Asia 18% Latin America 5% 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS Consumer 19% Packaging 23%Industrial 16% Building and Construction 9% Telecommunications 4% Energy 5% Defense 7% END MARKET REVENUE $2,007M $358M $1,138M $224M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $502M$3,143M (1) Transportation 10% Healthcare 7% 19 (1) Total company sales and adjusted EBITDA of $3,143M and $502M, respectively, include intercompany sales eliminations and corporate costs 2023 REVENUE | $2 .0 B ILL ION US & Canada 34% EMEA 37% Asia 21% Latin America 8% END MARKET REGION 20 Packaging 34% Consumer 21% Healthcare 8% Industrial 15% Transportation 9% Building & Construction 10% Telecommunications 1% Energy 2% COLOR, ADDITIVES & INKS 2023 REVENUE | $1 .1 B ILL ION US & Canada 52% EMEA 35% Asia 13% 21 Packaging 5% Consumer 16% Healthcare 6%Industrial 16% Transportation 12% Telecommunications 9% Energy 10% Defense 18% Building & Construction 8% END MARKET REGION SPECIALTY ENGINEERED MATERIALS Packaging 32% Consumer 26% Healthcare 9% Industrial 13% Building & Construction 6% Telecommunications 2% Energy 2% Defense 1% Asia (18% of sales) Transportation 9% 2023 AVIENT REGIONAL SALES Packaging 25% Consumer 13% Healthcare 5% Industrial 18% Building & Construction 9% Energy 5% Defense 8% EMEA (36% of sales)Transportation 13% Packaging 13% Consumer 22% Healthcare 10% Industrial 16% Building & Construction 12% Energy 6% Defense 8% US & Canada (41% of sales) Transportation 9% Packaging 59% Consumer 22% Healthcare 2% Industrial 8% Building & Construction 4% LATAM (5% of sales) Transportation 5% Telecommunications 4% Telecommunications 4% 22 BY END MARKET Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) Senior management uses comparisons of adjusted net income from continuing operations attributable to Avient shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to Avient shareholders, excluding special items, to assess performance and facilitate comparability of results. Senior management believes the measures described above are useful to investors because they allow for comparison to Avient's performance in prior periods without the effect of items that, by their nature, tend to obscure Avient's operating results due to the potential variability across periods based on timing, frequency and magnitude.

COMPENSATION DISCUSSION AND ANALYSIS Factor Median Peer Group Comparator 2017 Financials* 2018 PolyOne Results PolyOne Peer Group for 2018 Compensation Decisions Review of 2018 Named Executive Officer Compensation COMPENSATION DISCUSSION AND ANALYSIS What We Pay and Why: Elements of Compensation 2018 Base Salary 2018 Annual Incentive. Weighting Base Salary Weighting Annual Incentive Weighting Long- Term Incentive COMPENSATION DISCUSSION AND ANALYSIS Consolidated Company Adjusted Operating Income 60% Consolidated Company Revenue 25% Consolidated Company Working Capital as a Percentage of Sales 15% Corporate Annual Plan Weightings Adjusted Operating Income (Business Unit results) 40% Adjusted Operating Income (consolidated Company results) 20% Business Unit Revenue 25% Business Segment Working Capital as a Percentage of Sales 15% Business Unit Annual Plan Weightings COMPENSATION DISCUSSION AND ANALYSIS 2018 Corporate Plan (Patterson, Richardson, Garratt, Kunkle) Measure Weighting Threshold Target Maximum Results Payout % 2018 CAI Plan (Crist) Measure Weighting Threshold Target Maximum Results Payout % Long-Term Incentive. Other Benefits. 2018 Grants of Plan-Based Awards Target ($) (d) Estimated Future Payouts Under Equity Incentive Plan Awards Exercise or Base Price of Option Awards ($/Sh) (i) Threshold (#) (f) Estimated Future Payouts Under Non- Equity Incentive Plan Awards Name (a) Grant Date (b) Grant Date Fair Value of Stock and Option Awards ($) (j) Threshold ($) (c) Maximum ($) (e) All Other Stock Awards: Number of Shares of Stock or Units (#) (h) Target (#) (g) EXECUTIVE COMPENSATION Estimated Future Payouts Under Non-Equity Incentive Plan Awards (columns (c), (d) and (e)) (1) 2018 Annual Incentive Program Payments (2) Cash-Settled Performance Units.

Level 1 assets are valued based on quoted market prices. Note 13 — SHARE-BASED COMPENSATION Share-based compensation cost is based on the value of the portion of share-based payment awards that are ultimately expected to vest during the period. Share-based compensation expense is based on awards expected to vest and therefore has been reduced for estimated forfeitures.

Based Participants Withholding No Right to Continued Employment Effective Date of the 2020 Plan Amendment and Termination of the 2020 Plan: EQUITY PLAN New Plan Benefits U.S. COMPENSATION DISCUSSION AND ANALYSIS Factor Median Peer Group Comparator 2019 Financials 2019 PolyOne Results PolyOne Peer Group for 2019 Compensation Decisions* Review of 2019 Named Executive Officer Compensation COMPENSATION DISCUSSION AND ANALYSIS What We Pay and Why: Elements of Compensation 2019 Base Salary Weighting Base Salary Weighting Annual Incentive Weighting Long- Term Incentive COMPENSATION DISCUSSION AND ANALYSIS 2019 Annual Incentive. Other Benefits. 2019 Grants of Plan-Based Awards Estimated Future Payouts Under Non-Equity Incentive Plan Awards (columns (c), (d) and (e)) (1) 2019 Annual Incentive Program Payments Maximum ($) (e) All Other Stock Awards: Number of Shares of Stock or Units (#) (h) Target (#) (g) Target ($) (d) Estimated Future Payouts Under Equity Incentive Plan Awards Name (a) Grant Date (b) Grant Date Fair Value of Stock and Option Awards ($) (j) Threshold ($) (c) Exercise or Base Price of Option Awards ($/Sh) (i) Threshold (#) (f)ff Estimated Future Payouts Under Non-Equity Incentive Plan Awards ( ) ( ) ( ) (j)( )( )(g)( ) ( )( ) (j)( )( )(g)( ) ( )( )( ) ( ) ( ) EXECUTIVE COMPENSATION (2) Cash-Settled Performance Units.

These materials are based on select engineering thermoplastic resins that are formulated with reinforcing additives such as carbon fiber, glass fiber and glass beads. Gate type should be selected based on location and part geometry. • Gate diameters equivalent to 50% of the average wall thickness are recommended. • Land lengths of 0.020"–0.035" (0.50mm–0.90mm) are typically recommended. Cold Slug Wells • Place these wells at the base of the sprue to capture the cold material first emerging from the nozzle. • Place wells at every 90° bend in the runner system. • Well depths approximately 1.5 times the diameter of the runner provide the best results.

These materials combine the unique benefits of internal lubricants such as PTFE, silicone and molybdenum disulfide with a wide array of base engineering resins. Gate type should be selected based on location and part geometry. • Gate diameters equivalent to 50% of the average wall thickness are recommended. • Land lengths of 0.020"–0.035" (0.50mm–0.90mm) are typically recommended. Cold Slug Wells • Place these wells at the base of the sprue to capture the cold material first emerging from the nozzle. • Place wells at every 90° bend in the runner system. • Well depths approximately 1.5 times the diameter of the runner provide the best results.

These colorants are based in polysulfone resins which can withstand up to 1,000 autoclave cycles and high heat sterilization to 150°C, as well as hold up to the effects of harsh cleaning agents. KEY CHARACTERISTICS • Can be formulated for PESU, PPSU, and PSU • 43 standard colors as well as custom colors available • Ultra-high heat resistance • Based on raw materials pretested per ISO 10993 • Range of brilliant, vibrant colors • Based on raw materials compliant with food contact • Customizable with functional additive solutions • Based in polysulfone resins for ultra-high performance; may be formulated for other resin types • Low minimum order quantities available MARKETS AND APPLICATIONS Transcend colorants are formulated specifically for the healthcare market, and ideal for applications such as: • Dental tools and equipment • Surgical robots • Surgical lighting • Diagnostic equipment PRODUCT BULLETIN & COLOR CARD Colors may vary from actual color shown.

Over the past several years, FIBER-LINE® and DuPontTM have formed a strong partnership based upon the synergies between both organizations. Because FIBER-LINE® already processes so many different types and deniers of both Kevlar® & Nomex®, FIBER-LINE® have been authorized by DuPontTM to distribute small quantities of these fibers to an ever- growing customer base. Over the last several years, FIBER-LINE® and DuPont™ have formed a strong partnership based upon the synergies between both organizations. • FIBER-LINE®’s ability to add value to the already attractive properties of both Kevlar®Para-Aramid & Nomex® Meta-Aramid creates more opportunity in the market place to provide solution driven products to a diverse range of markets. • Because FIBER-LINE® already processes so many dif- ferent types and deniers of both Kevlar® & Nomex®, we have been authorized by DuPont™ to distribute small quantities of these fibers to an ever-growing customer base. • Through this program, we hope to introduce busi- nesses of all sizes to the benefit of Aramid fibers.

Helping to improve sustainability over the end- product lifecycle, Complēt PKE formulations offer a reduced carbon footprint as a result of the base resin. TECHNICAL PROPERTIES(1) TEST METHOD Complēt LGF30-PKE NAT Complēt LGF40-PKE NAT Complēt LGF50-PKE NAT Physical Density/Specific Gravity ASTM D792 1.47 1.54 1.66 Mechanical Tensile Strength (Yield) ASTM D638 21,100 psi 24,700 psi 26,400 psi Tensile Modulus(2) ASTM D638 1,150,000 psi 1,570,000 psi 2,150,000 psi Flexural Modulus(3) ASTM D790 1,120,000 psi 1,480,000 psi 2,030,000 psi Flammability (non-PFAS options available) Flame Rating @ 1.5 mm UL 94 V-0 V-0 — COLD IMPACT PERFORMANCE Ft -lb /in Data based on single lot of lab-generated samples. Values are not to be construed as specifications. ■ Notched 23C ■ Unnotched 23C ■ Unnotched -30C■ Notched -30C 0 5 10 15 20 25 Complēt LGF30-PKE NAT Complēt LGF40-PKE NAT Complēt LGF50-PKE NAT Izod Impact Notched ASTM D256/Unnotched ASTM D4812 4.1 4.7 5.4 18.9 19.5 19.919.1 19.8 20.1 4.0 4.6 5.0 (1) Data based on single lot of lab generated samples.

These materials combine the unique benefits of various internal lubricants with a wide array of base engineering resins. PTFE-free LubriOne formulations avoid the use of any fluorinated content, utilizing lubricants such as molybdenum disulphide (MoS2), Ultra High Molecular Weight Polyethylene (UHMWPE) and graphite in a wide array of engineered base resins. KEY CHARACTERISTICS • Excellent wear resistance • Reduced friction, heat build-up, noise & vibration • Improved processability & surface finish on parts • Lower power requirements & low maintenance • Reduced tool contamination and corrosion • Reduction in lubricant migration time • Design flexibility • Reduced weight • Chemically resistant MARKETS & APPLICATIONS Ideal for applications in many industries including transportation, industrial, household, electrical and electronics including: • Transportation – Fuel flap axis, interior door handle axis, gears, seat mechanics, sun-roof sliding mechanisms, side mirror parts • Industrial – Conveyor belt gears, pulleys • Household – Window/door runners, furniture parts, hinges • Electrical and electronics – Electrical plug safety parts, printers, barcode scanners PRODUCT BULLETIN EUROPE GRADES ASIA GRADES Material Name Base Resin Reinforcing Filler Lubricating Filler LubriOne LB6000-5024 RS HI natural PA6 GF10 UHMWPE Lubrione LB6000-5021 RS S1 GF30 UHMWPE Lubrione LB6000-5021 RS X2 GF30 UHMWPE LubriOne LB6000-5019 X1 black GF50 UHMWPE LubriOne LB6700-5001 RS AF black PA6/PA66 GF50 UHMWPE LubriOne NN-000/01M black SO PA66 Unfilled MoS2 LubriOne REC LB6600-5030 RS grey GF33 Graphite LubriOne LB3300-5010 RS natural PBT GF20 UHMWPE LubriOne LB3300-5005 RS natural MI20 UHMWPE LubriOne REC LB3220-5001 RS C natural X1 PC GF10 UHMWPE LubriOne LB8900-5010 GP grey PKE Unfilled Graphite LubriOne LB8900-5006 RS PE natural GF20 UHMWPE LubriOne LB8900-5004 RS PE natural GF30 UHMWPE LubriOne LB4200-5022 black POM Unfilled MoS2 LubriOne LB4200-5023 natural Unfilled UHMWPE LubriOne LB9200-5012 RS PE natural PPS GF30 UHMWPE Material Name Base Resin Reinforcing Filler Lubricating Filler LubriOne LB6600-8056 LB BK001 PA66 Unfilled LDPE LubriOne LB6600-8054 RS BK001 CF30 LDPE LubriOne LB6600-8052 RS BK001 GF30 LDPE LubriOne LB4200-8032 RS NC001 POM GF30 LDPE LubriOne LB4200-8030 AR NC001 AF10 LDPE LubriOne LB4200-8026 LB BK001 Unfilled LDPE+HDPE LubriOne LB3200-8022 LB BK001 PC Unfilled UHMWHDPE LubriOne LB3200-8021 RS BK001 GF30 UHMWHDPE LubriOne LB7600-8008 RS BK001 PPO GF20 UHMWHDPE Copyright © 2024, Avient Corporation.