Building & Construction - Industry Bulletin Discover materials from Avient that can enable faster and more reliable communication, minimize signal loss and maximize connectivity, protect electronics from static build up and radio frequency interference (Chinese language version) Discover materials from Avient that can enable faster and more reliable communication, minimize signal loss and maximize connectivity, protect electronics from static build up and radio frequency interference.

Building & Construction - Industry Bulletin Discover materials from Avient that can enable faster and more reliable communication, minimize signal loss and maximize connectivity, protect electronics from static build up and radio frequency interference (Chinese language version) Discover materials from Avient that can enable faster and more reliable communication, minimize signal loss and maximize connectivity, protect electronics from static build up and radio frequency interference.

Application Overview Building + Construction Outdoor Building Products

FX +8.5% FX -0.4% Total Avient +8.1% Note: Regional Sales Percentages exclude impact of foreign exchange COLOR, ADDITIVES & INKS SEGMENT $487 $522 $89 $97 (in millions) (in millions) 7 + 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 $268 $295 $51 $57 (in millions) (in millions) 8 • 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 10 11 • 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 and microsite will be available in early November 2024 AVIENT INVESTOR DAY AP P EN D IX 18 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% 20 (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 21 34% 21% 15% Building & 1% Energy COLOR, ADDITIVES & INKS 2023 REVENUE | $1 .1 B ILL ION 52% 35% 22 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) 23 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.

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.

NEU™ Custom Capabilities and NEUSoft™ Thermoplastic Polyurethanes Overview Video Overview of dispersions portfolio and uses in healthcare applications Learn how to build a FlexCart™ G

Industry Overview Building + Construction Outdoor Building Products

Industry Overview Building + Construction Outdoor Building Products

Building & Construction - Industry Bulletin Building + Construction Outdoor Building Products

Building & Construction - Industry Bulletin Building + Construction Outdoor Building Products