In addition, most foreign countries have their own antitrust or competition laws. In addition, you should consult the Avient Legal Department before pricing products at or below variable cost. Divisions or subsidiaries operating outside of the United States must be cognizant of and adhere to applicable foreign laws, rules, regulations, etc. in conducting business abroad in addition to adhering to the Company’s antitrust guidelines. 19.

Avient Climate-related Scenario Analysis Summary SCOPE & TIME HORIZON AVIENT SCENARIO NET ZERO FUTURE PLEDGING PROGRESS STEADFAST POLICY CONVENTION 1.3-1.5°C 1.9-2.3°C 2.4-2.8°C TRANSITION RISK Net Zero Emissions Scenario Announced Pledges Scenario Stated Policies Scenario (IEA WEO 2021 1 scenarios) (NZE) | 1.4°C (APS) | 2.1°C (STEPS) | 2.6°C Emissions peak at 2050 and slowly decline through 2100 Emissions continue to rise beyond 2100 at slower rates Emissions continue to rise beyond 2100 at current rates BUSINESS IMPLICATIONS Increased transition risk: Business impacted by climate policies, carbon prices, market pressures and technological advancements Increased physical risk: Business impacted by direct damages and indirect discruption assocated with severe changes in climate driven weather events · Highly regulated policy environment · Moderate policy regulation · Few changes to current policy settings · Ambitious; net zero commitments achieved at most all levels · Government commitments and National Determined Contributions are achieved · Not all stated commitments are achieved · Improved air pollution in advanced and emerging market & developing economies · Rising air pollution levels especially in emerging market and developing economies · Doubling of the frequency of extreme heat events by 2050 and 120% increase in intensity & rising air pollution levels especially in emerging market and developing economies · Expectation of signifcant capital allocation for innovative product design, energy efficiency investments, and clean electrification of operations · Additional levels of R&D investment will be required to contribute to and attain announced commitments By 2030, Avient will enable 100% of our products manufactured for packaging applications to be recyclable or reusable to advance the circular economy, for which approximately 90% of Avient’s products met this criteria in 2020. Additional renewable energy will still be needed in Europe to offset the related grid emissions as will we also need to identify similar outlets in the Americas and Asia Pacific

& European climates for an extended period • Maintain color stability and resist brittleness for a minimum of 3 years • Reliable supplier with good product quality and stable supply • Offered a UV stabilizer for PP multi-filament yarn • Delivered good light fastness • Provided cost effectiveness by combining colorant and UV additive solutions • Had in-house Q-Lab UV (QUV) tester to meet strict customer standards Smartbatch Combination Colorants & Additives KEY REQUIREMENTS WHY AVIENT? https://www.avient.com/products/polymer-colorants/color-additive-combination-masterbatches/smartbatch-combination-colorants-additives Slide 1: Pp Multi-filament manufacturer

Bribes may include: • Cash and cash equivalents (gift cards or gift certificates) • Gifts, entertainment and hospitality where is no clear business purpose or they are in excess of reasonable business needs • Payment of travel expenses or providing vacations • Paying a government official to ignore an applicable customs requirement or to accelerate a tax refund • Personal services, favors, loans • Offers of employment or other benefits to a family member or friend of the individual • Political party and candidate contributions • Charitable donations and sponsorships Other less obvious items can also be a violation. Commercial Bribery In addition to prohibiting bribery of government officials, Avient also prohibits bribery and corruption in commercial dealings. To minimize risk, Avient must consider certain factors before entering into any third party relationship and all third parties must meet the following standards: • Reputable—it has the requisite experience and expertise • Credible—business references support the third party’s claims of expertise • Financially stable—adequate resources to fulfill commitments • Ethical & legal practices—committed to complying with all applicable laws including anti-bribery laws; and • Committed—executes an acknowledgement of, and agreement to comply with, this Policy Red Flags Avient can also be held liable under ABAC Laws for the actions of our agents and other third parties (including joint venture partners).

FX +4.6% FX -1.5% Total Avient +3.1% Note: Regional Sales Percentages exclude impact of foreign exchange Q2 2024 SEGMENT PERFORMANCE (COLOR, ADDITIVES & INKS) $525 $542 $94 $108 19.9% (in millions) (in millions) 7 17.9% +200 bps * Adjusted EBITDA Margin % • Organic sales growth in all regions led by Americas • Raw material deflation combined with cost reduction actions drove EBITDA margin expansion + 3% (+5% excluding FX) + 15% (+17% excluding FX) Q2 2024 SEGMENT PERFORMANCE (SPECIALTY ENGINEERED MATERIALS) $301 $308 $60 $64 20.6% (in millions) (in millions) 8 19.8% +80 bps * Adjusted EBITDA Margin % • Sales growth in consumer, healthcare and building & construction end markets offset by weaker demand in telecommunications • EBITDA margin expansion driven by positive end market mix as well as raw material deflation + 2% (+4% excluding FX) + 7% (+8% excluding FX) 2024 G U IDA N CE FY 2024 GUIDANCE Previous (May 7) Current Adjusted EBITDA $510 to $535 million $515 to $540 million Adjusted EPS $2.50 to $2.65 $2.55 to $2.70 Interest Expense $105 million $105 million Adjusted Effective Tax Rate 23% to 25% 23% to 25% Capital Expenditures ~$140 million ~$140 million 10 Q3 2024: Adjusted EPS of $0.62 11 Highlights • Provides performance updates on 2030 Sustainability Goals • Reduced company’s Scope 1 & 2 GHG emissions by 48% since 2019 • Highlights ESG performance ratings, certifications, and awards, including recent upgrades by Ecovadis to Gold and CDP to A- • Reflects Great Place to Work® culture focused on health, safety and employee engagement 2023 SUSTAINABILITY REPORT 11 Sustainability for a Better Tomorrow 2023 SUSTAINABILITY REPORT 12 • Investor Day to be held December 4, 2024 in New York, NY • The focus will be to do a deep dive on the Company’s strategy • Further details to be communicated 2024 AVIENT INVESTOR DAY AP P EN D IX 15 Performance Additives 15% Pigments TiO2 Dyestuffs Polyethylene 10%Nylon Polypropylene Styrenic Block Copolymer 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% 36% 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS 19% 23%Industrial Building and 7% END MARKET REVENUE $2,007M $358M $1,138M $224M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $502M$3,143M (1) 7% 17 (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 34% 37% 21% END MARKET REGION 18 34% 21% 15% Building & 1% Energy COLOR, ADDITIVES & INKS 2023 REVENUE | $1 .1 B ILL ION 52% 35% 19 6%Industrial 12% 10% Defense Building & END MARKET REGION SPECIALTY ENGINEERED MATERIALS 32% 26% Building & 6% 2% Defense 1% (18% of sales) 2023 AVIENT REGIONAL SALES 25% Building & (36% of sales)Transportation 22% Building & 12% 6% US & Canada (41% of sales) 59% 22% Building & LATAM (5% of sales) 20 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. In addition, operating income before the effect of special items is a component of Avient’s annual incentive plans and is used in debt covenant computations. A reconciliation of these measures to their most directly comparable GAAP measures is provided in the tables below. 2024 2023 Reconciliation to Condensed Consolidated Statements of Income $ EPS $ EPS Net income from continuing operations attributable to Avient shareholders $ 33.6 $ 0.36 $ 22.1 $ 0.24 Special items, after-tax 21.8 0.24 19.6 0.21 Amortization expense, after-tax 14.8 0.16 16.2 0.18 Adjusted net income / EPS $ 70.2 $ 0.76 $ 57.9 $ 0.63 Three Months Ended Reconciliation to EBITDA and Adjusted EBITDA: 2024 2023 Net income from continuing operations – GAAP $ 33.8 $ 22.3 Income tax expense 11.2 10.4 Interest expense, net 26.6 29.4 Depreciation & amortization 44.9 47.6 EBITDA from continuing operations $ 116.5 $ 109.7 Special items, before tax 28.1 21.7 Interest expense included in special items (1.0) — Depreciation & amortization included in special items (0.3) (0.1) Adjusted EBITDA $ 143.3 $ 131.3 Adjusted EBITDA as a percent of sales 16.9 % 15.9 % 1 2024 2023 Sales: Color, Additives and Inks $ 542.0 $ 524.5 Specialty Engineered Materials 308.1 300.8 Corporate (0.4) (0.9) Sales $ 849.7 $ 824.4 Operating income: Color, Additives and Inks $ 86.1 $ 68.0 Specialty Engineered Materials 42.8 39.7 Corporate (56.4) (45.4) Operating income $ 72.5 $ 62.3 Depreciation & amortization: Color, Additives and Inks $ 21.8 $ 25.7 Specialty Engineered Materials 20.8 19.9 Corporate 2.3 2.0 Depreciation & amortization $ 44.9 $ 47.6 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 107.9 $ 93.7 Specialty Engineered Materials 63.6 59.6 Corporate (54.1) (43.4) Other expense, net (0.9) (0.2) EBITDA from continuing operations 116.5 109.7 Special items, before tax 28.1 21.7 Interest expense included in special items (1.0) — Depreciation & amortization included in special items (0.3) (0.1) Adjusted EBITDA $ 143.3 $ 131.3 Adjusted EBITDA as a percent of sales: Color, Additives and Inks 19.9 % 17.9 % Specialty Engineered Materials 20.6 % 19.8 % 2 Year Ended December 31, 2023 Operating income: Color, Additives and Inks $ 259.9 Specialty Engineered Materials 142.5 Corporate (205.6) Operating income $ 196.8 Depreciation & amortization: Color, Additives and Inks $ 98.3 Specialty Engineered Materials 81.5 Corporate 9.0 Depreciation & amortization $ 188.8 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 358.2 Specialty Engineered Materials 224.0 Corporate (196.6) Other income, net 5.8 EBITDA from continuing operations 391.4 Special items, before tax 114.6 Interest expense included in special items (2.3) Depreciation & amortization included in special items (1.9) Adjusted EBITDA $ 501.8 3 Avient Q2 2024 Webcast Slides_for website_with non-GAAP_8_5.pdf IR Deck - AVNT-2024.06.30 - 8.02.24 1130AM.pdf Attachment Avient Q2 2024 Webcast Slides_for website_with non-GAAP.pdf AVNT cover slide.pdf

& Canada 64% Specialty Engineered Materials Color Additives and Inks 41% 23% 19% 10% 5% 4% Building & Energy Telecom Geography Segment Industry CREATING A WORLD-CLASS SUSTAINABLE ORGANIZATION 1. 6% annualized long term sales growth leveraging sustainable solutions, composites, healthcare and emerging regions 2. In addition, operating income before the effect of special items is a component of Avient’s annual incentive plans and is used in debt covenant computations. A reconciliation of these measures to their most directly comparable GAAP measures is provided in the tables below. 2024 2023 Reconciliation to Condensed Consolidated Statements of Income $ EPS $ EPS Net income from continuing operations attributable to Avient shareholders $ 49.4 $ 0.54 $ 20.8 $ 0.23 Special items, after-tax 5.5 0.06 22.3 0.24 Amortization expense, after-tax 14.9 0.16 15.1 0.16 Adjusted net income / EPS $ 69.8 $ 0.76 $ 58.2 $ 0.63 Three Months Ended Reconciliation to EBITDA and Adjusted EBITDA 2024 2023 Net income from continuing operations – GAAP $ 49.7 $ 21.3 Income tax expense 16.8 7.7 Interest expense, net 26.6 28.8 Depreciation and amortization 44.3 50.5 EBITDA from continuing operations 137.4 108.3 Special items, before tax 6.2 27.3 Depreciation and amortization included in special items (0.5) (1.8) Adjusted EBITDA $ 143.1 $ 133.8 Adjusted EBITDA as a percent of sales 17.3 % 15.8 % 1 2024 2023 Sales: Color, Additives and Inks $ 515.3 $ 537.0 Specialty Engineered Materials 314.4 309.7 Corporate (0.7) (1.0) Sales $ 829.0 $ 845.7 Operating income: Color, Additives and Inks $ 74.8 $ 65.6 Specialty Engineered Materials 53.4 43.1 Corporate (34.2) (51.6) Operating income $ 94.0 $ 57.1 Depreciation & amortization: Color, Additives and Inks $ 21.9 $ 25.8 Specialty Engineered Materials 19.6 21.2 Corporate 2.8 3.5 Depreciation & amortization $ 44.3 $ 50.5 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 96.7 $ 91.4 Specialty Engineered Materials 73.0 64.3 Corporate (31.4) (48.1) Other (expense) income, net (0.9) 0.7 EBITDA from continuing operations 137.4 108.3 Special items, before tax 6.2 27.3 Depreciation and amortization included in special items (0.5) (1.8) Adjusted EBITDA $ 143.1 $ 133.8 Adjusted EBITDA as a percent of sales: Color, Additives and Inks 18.8 % 17.0 % Specialty Engineered Materials 23.2 % 20.8 % December 31, 2023 Reconciliation to Condensed Consolidated Statements of Income $ EPS Net income from continuing operations attributable to Avient shareholders $ 75.8 $ 0.83 Special items, after-tax 79.3 0.86 Amortization expense, after-tax 61.5 0.67 Adjusted net income / EPS $ 216.6 $ 2.36 Free Cash Flow Calculation December 31, 2023 Cash provided by operating activities $ 201.6 Taxes paid on gain on sale of business 104.1 Adjusted cash provided by operating activities 305.7 Capital expenditures (119.4) Free cash flow $ 186.3 Year Ended December 31, 2023 Sales: Color, Additives and Inks $ 2,007.4 Specialty Engineered Materials 1,138.2 Corporate (2.8) Sales $ 3,142.8 Operating income: Color, Additives and Inks $ 259.9 Specialty Engineered Materials 142.5 Corporate (205.6) Operating income $ 196.8 Depreciation & amortization: Color, Additives and Inks $ 98.3 Specialty Engineered Materials 81.5 Corporate 9.0 Depreciation & amortization $ 188.8 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 358.2 Specialty Engineered Materials 224.0 Corporate (196.6) Other income, net 5.8 EBITDA from continuing operations 391.4 Special items, before tax 114.6 Interest expense included in special items (2.3) Depreciation and amortization included in special items (1.9) Adjusted EBITDA $ 501.8 Adjusted EBITDA as a percent of sales 16.0 % 3 Year Ended December 31, Reconciliation to EBITDA and Adjusted EBITDA: 2006 2014 Sales $ 2,622.4 $ 3,835.5 Net income from continuing operations – GAAP $ 133.5 $ 77.2 Income tax expense 29.7 11.2 Interest expense, net 63.1 62.2 Depreciation and amortization 57.1 123.9 EBITDA from continuing operations 283.4 274.5 Special items, before tax (34.0) 164.9 Depreciation and amortization included in special items — (23.1) Joint venture equity income (107.0) — Adjusted EBITDA $ 142.4 $ 416.3 Adjusted EBITDA as a percent of sales 5.4 % 10.9 % Year Ended December 31, Reconciliation of Adjusted EPS: 2006 2014 Net income from continuing operations attributable to Avient common shareholders $ 130.9 $ 78.0 Joint venture equity earnings, after-tax (68.5) — Special items, after-tax (21.2) 101.0 Special items, tax adjustments (30.0) (10.5) Amortization expense, after-tax 1.4 12.4 Adjusted net income from continuing operations attributable to Avient common shareholders $ 12.6 $ 180.9 Diluted shares 92.8 93.5 Adjusted EPS attributable to Avient common shareholders $ 0.14 $ 1.93 AVNT Q1 2024 Investor Presentation_w Non-GAAP.pdf IR Deck - AVNT-2024.03.31 5.09 4PM.pdf Attachment

In addition, operating income before special items and adjusted EPS are components of various PolyOne annual and long-term employee incentive plans Platform sales and operating income (OI) 2006Y* 2008Y* 2010Y* 2012Y* 2012PF** Global Specialty Engineered Materials Sales $ 345.3 $ 514.0 $ 517.4 $ 543.6 $ 773.0 Global Color, Additives and Inks Sales 531.8 554.3 527.4 703.5 828.5 Designed Structures and Solutions - - - - 850.6 Specialty Platform Sales $ 877.1 $ 1,068.3 $ 1,044.8 $ 1,247.1 $ 2,452.1 Performance Products and Solutions Sales 1,166.2 1,001.4 776.3 837.0 696.1 PolyOne Distribution Sales 732.8 796.7 911.9 1,030.3 1,030.3 Corporate and Eliminations (153.7) (127.7) (111.1) (121.8) (121.6) Total Sales $ 2,622.4 $ 2,738.7 $ 2,621.9 $ 2,992.6 $ 4,056.9 Global Specialty Engineered Materials OI $ 3.9 $ 17.6 $ 49.7 $ 47.0 $ 47.7 Global Color, Additives and Inks OI 8.9 28.1 37.7 66.8 81.6 Designed Structures & Solutions OI - - - - 20.9 Specialty Platform OI $ 12.8 $ 45.7 $ 87.4 $ 113.8 $ 150.2 Performance Products and Solutions OI 64.2 31.3 54.0 74.9 37.4 PolyOne Distribution OI 19.2 28.1 42.0 66.0 66.0 Sunbelt Joint Venture OI 102.9 28.6 18.9 - - Corporate and eliminations (4.6) (28.9) (32.5) (33.7) (40.0) Special items in OI 39.1 (396.2) 4.8 (53.9) (53.9) Operating income (loss) GAAP $ 233.6 $ (291.4) $ 174.6 $ 167.1 $ 159.7 Sunbelt equity income (107.0) (32.5) (23.1) - - Special items in OI (39.1) 396.2 (4.8) 53.9 53.9 Operating income adjusted $ 87.5 $ 72.3 $ 146.7 $ 221.0 $ 213.6 Global Specialty Engineered Materials - OI % of sales 1.1% 3.4% 9.6% 8.6% 6.1% Global Color, Additives and Inks - OI % of sales 1.7% 5.1% 7.1% 9.5% 9.8% Designed Structures & Solutions – OI % of sales - - - - 2.5% Specialty platform OI - % of sales 1.5% 4.3% 8.4% 9.1% 6.1% PP&S operating OI - % of sales 5.5% 3.1% 7.0% 9.0% 5.4% Distribution OI - % of sales 2.6% 3.5% 4.6% 6.4% 6.4% PolyOne OI adjusted - % of sales 3.3% 2.6% 5.6% 7.4% 5.3% * Historical results include the Resin and Specialty Coatings businesses within the Performance Products and Solutions segment. ** Pro Forma results include Spartech and Glasforms acquisitions, Specialty Coatings reclass and exclude the Resin business assets. *** Restated results to exclude the Resin business and to remove Specialty Coatings from the Performance Products and Solutions segment into Global Color, Additives and Inks segment. Average Debt Q2 2012 Q3 2012 Q4 2012 Q1 2013 Q2 2013 Average PolyOne Debt $ 705.8 $ 705.2 $ 706.9 $ 1,055.5 $ 1,031.2 $ 840.9 Average Equity Q2 2012 Q3 2012 Q4 2012 Q1 2013 Q2 2013 Average PolyOne shareholders’ equity $ 604.3 $ 629.3 $ 629.1 $ 871.8 $ 993.9 $ 745.7 Platform sales and operating income (OI) H1 2012*** H1 2013*** H1 2013**** Global Specialty Engineered Materials Sales $ 280.9 $ 352.0 $ 285.1 Global Color, Additives and Inks Sales 413.9 434.7 409.2 Designed Structures & Solutions Sales - 240.4 - Specialty Platform Sales $ 694.8 $ 1,027.1 $694.3 Performance Products and Solutions Sales 336.0 336.7 317.5 PolyOne Distribution Sales 533.6 543.1 543.1 Corporate and Eliminations (62.3) (68.2) (68.2) Total Sales $ 1,502.1 $ 1,838.7 $ 1,486.7 Global Specialty Engineered Materials OI $ 24.6 $ 32.5 $ 31.2 Global Color, Additives and Inks OI 44.0 54.7 52.0 Designed Structures & Solutions OI - 10.5 - Specialty Platform OI $ 68.6 $ 97.7 $ 83.2 Performance Products and Solutions OI 19.3 27.5 25.7 PolyOne Distribution OI 33.4 33.1 33.1 Corporate and eliminations (20.3) (25.7) (20.3) Special items in OI (20.3) (11.4) (20.3) Operating income - GAAP $ 80.7 $ 121.2 $ 101.4 Special items in OI 20.3 11.4 20.3 Operating income adjusted $ 101.0 $ 132.6 $ 121.7 Global Specialty Engineered Materials - OI % of sales 8.8% 9.2% 10.9% Global Color, Additives and Inks - OI % of sales 10.6% 12.6% 12.7% Designed Structures & Solutions - OI % of sales - 4.4% - Specialty platform - OI % of sales 9.9% 9.5% 12.0% PP&S operating - OI % of sales 5.7% 8.2% 8.1% Distribution OI - % of sales 6.3% 6.1% 6.1% PolyOne OI adjusted - % of sales 6.7% 7.2% 8.2% Reconciliation to Condensed Consolidated Balance Sheets H1 2013 Short-term debt and current portion of long-term debt $ 8.7 Long-term debt 1,022.5 Less cash and cash equivalents (392.4) Specialty Platform Gross Margin Percentage 2006Y* Q2 2013**** Global Specialty Engineered Materials Sales $ 345.3 $ 143.5 Global Color, Additives and Inks Sales 531.8 207.5 Specialty Platform Sales $ 877.1 $ 351.0 Global Specialty Engineered Materials Gross Margin $ 41.6 $ 37.3 Global Color, Additives and Inks Gross Margin 83.6 71.8 Specialty Platform Gross Margin $ 125.2 $ 109.1 Specialty Platform Gross Margin Percentage 14.3% 31.1% * Historical results include the Resin and Specialty Coatings businesses within the Performance Products and Solutions segment.

HVAC AUTOMOTIVE PRODUCER N O R T H A M E R I C A Excelite™ IM Chemical Foaming Additives WHY AVIENT? https://www.avient.com/products/polymer-additives/foaming-agents/colormatrix-excelite-chemical-foaming-additives

WOUND CARE MANUFACTURER S E L F - A D H E S I V E B A N D A G E S • Provided aqueous dispersions that are safe for uses in contact with human skin and produce low levels of VOCs • Offered high antioxidant performance to protect bandages from degradation and improve storage time • Collaborated to deliver effectively and efficiently with accelerated development cycles and streamlined operations Aquamix Additive Formulations WHY AVIENT? https://www.avient.com/products/polymer-additives/additive-dispersions/aquamix-chemical-dispersions Slide 1: Wound care Manufacturer

PE Tarpaulin manufacturer PE TARPAULIN MANUFACTURER O U T D O O R T A R P S • Resist UV light degradation in European climates for an extended period • Maintain color stability • Enhanced UV resistance against UV degradation • Delivered colors stability with good light fastness • Provided cost effectiveness by combining colorant and UV solutions • Offered in-house Q-Lab UV (QUV) tester to meet strict customer standard / requirement Smartbatch Combination Colorants and Additives KEY REQUIREMENTS WHY AVIENT? https://www.avient.com/products/polymer-colorants/color-additive-combination-masterbatches/smartbatch-combination-colorants-additives Slide 1: PE Tarpaulin manufacturer