CESA BLOCK – STANDARD OFFERINGS POLYMER FAMILY MATERIAL PRODUCT NAME DOSAGE Polyolefin PEA0820045 CESA Block PEA0820045 1–5% Polypropylene PPA0820056 CESA Block PPA0820056 1–5% Polyamide ABA0820022 CESA Block ABA0820022 2–6% Polyester NBA0820024 CESA Block NBA0820024 1–5% Styrenic SLA0820010 CESA Block SLA0820010 1–5% TPU RUA0820028 CESA Block RUA0820028 1–5% CESA Block additives can be used in combination with other CESA masterbatches, and formulations can be customized for most applications.

4/16/2021 Comprovante de Inscrição e de Situação Cadastral https://servicos.receita.fazenda.gov.br/servicos/cnpjreva/Cnpjreva_Comprovante.asp 1/2 Comprovante de Inscrição e de Situação Cadastral Cidadão, Con�ra os dados de Identi�cação da Pessoa Jurídica e, se houver qualquer divergência, providencie junto à RFB a sua atualização cadastral. TÍTULO DO ESTABELECIMENTO (NOME DE FANTASIA) ******** PORTE DEMAIS   CÓDIGO E DESCRIÇÃO DA ATIVIDADE ECONÔMICA PRINCIPAL 20.29-1-00 - Fabricação de produtos químicos orgânicos não especificados anteriormente   CÓDIGO E DESCRIÇÃO DAS ATIVIDADES ECONÔMICAS SECUNDÁRIAS 71.20-1-00 - Testes e análises técnicas 46.84-2-99 - Comércio atacadista de outros produtos químicos e petroquímicos não especificados anteriormente 82.11-3-00 - Serviços combinados de escritório e apoio administrativo   CÓDIGO E DESCRIÇÃO DA NATUREZA JURÍDICA 206-2 - Sociedade Empresária Limitada   LOGRADOURO AV DAS NACOES UNIDAS NÚMERO 18001 COMPLEMENTO ANDAR OITAVO ALA B PARTE   CEP 04.795-100 BAIRRO/DISTRITO VILA ALMEIDA MUNICÍPIO SAO PAULO UF SP   ENDEREÇO ELETRÔNICO EDUARDO.CARAMELO@CLARIANT.COM TELEFONE (11) 4745-8648/ (11) 5683-7918   ENTE FEDERATIVO RESPONSÁVEL (EFR) *****   SITUAÇÃO CADASTRAL ATIVA DATA DA SITUAÇÃO CADASTRAL 22/09/2015   MOTIVO DE SITUAÇÃO CADASTRAL   SITUAÇÃO ESPECIAL ******** DATA DA SITUAÇÃO ESPECIAL ******** Aprovado pela Instrução Normativa RFB nº 1.863, de 27 de dezembro de 2018. Página: 1/1  CONSULTAR QSA  VOLTAR  IMPRIMIR A RFB agradece a sua visita.

CHF) Ei Ae Lö Stammanteile Gesellschafter (siehe Personalangaben) Ei Lö Domiziladresse 1 30'804'000.00 2 21'563 x 1'000.00 9'241x 1'000.00 Colormatrix Holdings, lnc. (41 42456) PolyOne Europe Finance S.ä.r.1. Seite / ld 4016 6281 07.08.2020 02.12.2020 155 238 12.08.2020 07.12.2020 1 004956355 1 005040881 Ei Ae Lö Personalangaben Funktion Zeichnungsart ;'riger-rn cuxemburg(tu) igeftn enqi+s) infietden Högemann, Dr. Peter, von Luzern, in Bottmingen Colormatrix Holdings, lnc. (4142456), in Wilmington (US) PolyOne Europe Finance S.ä.r.1.

Pro Forma Financial Information The Company acquired Avient Protective Materials (“Dyneema”) on September 1, 2022 (the “Acquisition Date”) and sold the Distribution segment on November 1, 2022. To provide comparable results, the company references “pro forma” financial metrics, which include the business results of Avient Protective Materials for periods prior to the Acquisition Date, as if the transaction occurred on January 1, 2021 and reflect Distribution as a discontinued operation. A reconciliation of these measures to their most directly comparable GAAP measures is provided in the tables below. 2023 2022 Reconciliation to Condensed Consolidated Statements of Income $ EPS(1) $ EPS(1) Net income (loss) from continuing operations attributable to Avient shareholders $ 27.8 $ 0.30 $ (17.0) $ (0.19) Special items, after tax (Attachment 3) 5.4 0.06 38.3 0.42 Amortization expense, after-tax 15.0 0.16 14.6 0.16 Adjusted net income / EPS $ 48.2 $ 0.52 $ 35.9 $ 0.39 (1) Per share amounts may not recalculate from figures presented herein due to rounding 2023 2022 Reconciliation to Condensed Consolidated Statements of Income $ EPS(1) $ EPS(1) Net income from continuing operations attributable to Avient shareholders $ 75.8 $ 0.83 $ 82.8 $ 0.90 Special items, after tax (Attachment 3) 79.3 0.86 116.2 1.26 Amortization expense, after-tax 61.5 0.67 49.0 0.53 Adjusted net income / EPS $ 216.6 $ 2.36 $ 248.0 $ 2.69 (1) Per share amounts may not recalculate from figures presented herein due to rounding 1 Reconciliation to EBITDA and Pro Forma Adjusted EBITDA 2023 2022 2023 2022 Sales - GAAP $ 719.0 $ 790.4 $ 3,142.8 $ 3,396.9 Pro forma APM adjustments — — — 256.1 Pro forma adjusted sales $ 719.0 $ 790.4 $ 3,142.8 $ 3,653.0 Net income (loss) from continuing operations – GAAP $ 27.6 $ (16.6) $ 76.3 $ 83.1 Income tax (benefit) expense (7.0) (60.8) 11.0 (19.3) Interest expense 26.8 49.4 115.3 119.8 Depreciation and amortization from continuing operations 44.2 48.6 188.8 162.5 EBITDA from continuing operations $ 91.6 $ 20.6 $ 391.4 $ 346.1 Special items, before tax 22.4 104.3 114.6 194.0 Interest expense included in special items (0.1) (16.0) (2.3) (26.0) Depreciation and amortization included in special items — (1.5) (1.9) (5.5) Adjusted EBITDA $ 113.9 $ 107.4 $ 501.8 $ 508.6 APM pro forma adjustments - 8 months 2022* — — — 83.1 Pro forma adjusted EBITDA $ 113.9 $ 107.4 $ 501.8 $ 591.7 Pro forma adjusted EBITDA as a percent of sales 15.8 % 13.6 % 16.0 % 16.2 % * Pro forma adjustment for January - August 2022 APM results (period before Avient ownership).

Purchase price multiple rapidly declining on strength of business and synergy capture 12 $133 $201 2019PF 2022E 12 Clariant Color EBITDA Growth Purchase Price Multiple 10.8x 7.0x 6.4x 2019PF 2021 2022E w/ Full Synergies 11.9% 16.3% 2019PF 2022E EBITDA Margins CLARIANT COLOR: TRANSFORMATIONAL ACQUISITION (1) Financial information is pro forma to include a full year of Clariant Color business SUNBELT PVC Resins DSS 20 Acquisitions $4.8B Investment $2.7B of Annual Revenue 5 Divestments $2.3B Proceeds TPE PP&S HISTORIC SPECIALIZATION THROUGH M&A 13 Distribution DSM Protective BOLT-ON ACQUISITION HISTORY 14 Commercial Resources Operating Income Operating Margins 259 363 $40 $139 Established Acquisitions (> 7 years) + 40% + 248% + 1300 bps I N V E S T T O G R O W SPECIALTY TRANSFORMATION T O D A Y 46% 67% 86% 0% 60% 80% 2005 2010 2019 2021 2022 PF % o f A d ju st ed E B IT D A • Commodity JVs • Distribution • Performance Products & Solutions • Specialty Businesses (1) Adjusted EBITDA is EBITDA excluding corporate costs and special items (2) Pro forma for the acquisition of Dyneema® and divestiture of Distribution (1 ) (2) 15 Building & 43% 14% Telecom. 2% 2006 2022 Pro Forma 21% Building & Telecom. END MARKET FOCUS ON LESS CYCLICAL INDUSTRIES 16 14.8% 17.6% 21.0% 2018 2020 2022 PF 1.8% 2006 15.3% 16.2% 17.0% 2018PF 2020PF 2022E CAI 2.7% 2006 SEM SPECIALTY EBITDA MARGIN EXPANSION 17 • Portfolio transformation accelerates growth in less cyclical, higher margin end markets • Investments in our composites platform continue to drive margin expansion (1) (1) (1) 2018 and 2020 financial information is pro forma to include a full year of Clariant Color acquisition PORTFOLIO EVOLUTION OVER THE YEARS 18 Adj. Sales EBITDA Specialty Engineered Materials Color Additives and Inks $585M$3,635M 29 C O L O R , A D D I T I V E S & I N K S 2022 REVENUE | $2 .3 B ILL ION US & Canada Latin America END MARKET REGION 30 33% Building & 1% Energy Figures represent 2022 full year estimates S P E C I A LT Y E N G I N E E R E D M AT E R I A L S 2022 PRO FORMA REVENUE | $1 .3 B ILL ION END MARKET US & Canada 50% REGION 31 Figures represent 2022 full year estimates 19% 8%Industrial 16% Building & 31% 28% Building & 3% 2% Defense (20% of sales) 2022 PROFORMA AVIENT REGIONAL SALES BY END MARKET 29% 17% Building & (35% of sales) 14% Building & 12% US & Canada (40% of sales) 49% Building & LATAM (5% of sales) 3%Telecommunications Figures represent 2022 full year estimates32

Purchase price multiple rapidly declining on strength of business and synergy capture 12 $133 $201 2019PF 2022E 12 Clariant Color EBITDA Growth Purchase Price Multiple 10.8x 7.0x 6.4x 2019PF 2021 2022E w/ Full Synergies 11.9% 16.3% 2019PF 2022E EBITDA Margins CLARIANT COLOR: TRANSFORMATIONAL ACQUISITION (1) Financial information is pro forma to include a full year of Clariant Color business SUNBELT PVC Resins DSS 20 Acquisitions $4.8B Investment $2.7B of Annual Revenue 5 Divestments $2.3B Proceeds TPE PP&S HISTORIC SPECIALIZATION THROUGH M&A 13 Distribution DSM Protective BOLT-ON ACQUISITION HISTORY 14 Commercial Resources Operating Income Operating Margins 259 363 $40 $139 Established Acquisitions (> 7 years) + 40% + 248% + 1300 bps I N V E S T T O G R O W SPECIALTY TRANSFORMATION T O D A Y 46% 67% 86% 0% 60% 80% 2005 2010 2019 2021 2022 PF % o f A d ju st ed E B IT D A • Commodity JVs • Distribution • Performance Products & Solutions • Specialty Businesses (1) Adjusted EBITDA is EBITDA excluding corporate costs and special items (2) Pro forma for the acquisition of Dyneema® and divestiture of Distribution (1 ) (2) 15 Building & 43% 14% Telecom. 2% 2006 2022 Pro Forma 21% Building & Telecom. END MARKET FOCUS ON LESS CYCLICAL INDUSTRIES 16 14.8% 17.6% 21.0% 2018 2020 2022 PF 1.8% 2006 15.3% 16.2% 17.0% 2018PF 2020PF 2022E CAI 2.7% 2006 SEM SPECIALTY EBITDA MARGIN EXPANSION 17 • Portfolio transformation accelerates growth in less cyclical, higher margin end markets • Investments in our composites platform continue to drive margin expansion (1) (1) (1) 2018 and 2020 financial information is pro forma to include a full year of Clariant Color acquisition PORTFOLIO EVOLUTION OVER THE YEARS 18 Adj. Sales EBITDA Specialty Engineered Materials Color Additives and Inks $585M$3,635M 29 C O L O R , A D D I T I V E S & I N K S 2022 REVENUE | $2 .3 B ILL ION US & Canada Latin America END MARKET REGION 30 33% Building & 1% Energy Figures represent 2022 full year estimates S P E C I A LT Y E N G I N E E R E D M AT E R I A L S 2022 PRO FORMA REVENUE | $1 .3 B ILL ION END MARKET US & Canada 50% REGION 31 Figures represent 2022 full year estimates 19% 8%Industrial 16% Building & 31% 28% Building & 3% 2% Defense (20% of sales) 2022 PROFORMA AVIENT REGIONAL SALES BY END MARKET 29% 17% Building & (35% of sales) 14% Building & 12% US & Canada (40% of sales) 49% Building & LATAM (5% of sales) 3%Telecommunications Figures represent 2022 full year estimates32

Playbook in current environment 1. Executing flawlessly and continue advancing our strategy while prioritizing investments and resources for our growth vectors 1. 2. 3. 4. 5. 6. Color, Additives & Inks END MARKETS REGIONS 34% 21% 15% 11% 8% Packaging Telecom 1%Energy 1% 34% US & Canada Latin America Europe, Middle East Construction 15Copyright © .

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Leadership, EHS&S-PS, Facility Services, Design & Development, Information Technology, Sourcing, Logistics, Legal, and Human Resources Certification Date: 29 SEP 2023 Effective Date: 27 FEB 2025 Expiration Date: 27 SEP 2026 Revision Date: 05 MAR 2025 Dominic Townsend, President Page 1 of 5 Avon Lake Corporate Responsible Care Corporate Support Activities in Sr. Mariana Langiewicza 50, 95- 050 Konstantynow, Poland Avient Corporation - Korachi, Sindh Pakistan Design and Manufacture of Colour and Additive Concentrates, 1-A/1, Sector-20 , 74900 Korachi, Pakistan Avient Corporation Design and Manufacture of colour and additive concentrates, thermoplastic resins and specialty compounds Hohenrhein 1 Lahnstein Rheinland- Pfalz 5612 Germany Avient Corporation Design & Manufacturing of Colour and Additive Concentrates. Ezcabarte calle H Nº3 , 31194 Oricain, Spain Avient Corporation Design and Manufacture of Colorants and Additives for Plastics 700/848 Moo 1,Tambol Phan Thong, Amata City Chonburi Industrial Estate Phan Thong Chonburi 20160, Thailand Avient Corporation Manufacture of Colour and Additive Concentrates, Thermoplastic Resins and Specialty Compounds Via Lainate 26, 20005 Pogliano Milanese, Italy Avient Corporation Manufacture of Masterbatches 329 Tungsten Rd, Strydompark , 2194 Randburg, South Africa PolyOne Polymers India Private Limited Design & Manufacture of Color, Additive Concentrate & Specialty Survey No.344/1-2-3, Rania Works, Sakarda Bhadarwa Road Rania Gujarat 391780 India Avient Corporation Design and Manufacture of Color and Additive Concentrates, Thermoplastic Resins and Specialty Compounds 2nd Industrial City, Al-Kharj Road , 11432 Riyadh, Saudi Arabia Crta.

Avient acquired the Clariant Color business on July 1, 2020 (the “Acquisition Date”). Reduce Scope 1 & 2 greenhouse gas emissions by 60% by 2030, and operations carbon neutral by 2050. Avient is High Touch Avient Corporation 130 86 93 85 82 79 77 74 89 85 82 81 79 78 77 74 72 25 2021E (%) 1.