Enter the owner's name on line 1. Form W-9 (Rev. 10-2018) Page 5 1. You can reach TAS by calling the TAS toll-free case intake line at 1-877-777-4778 or TTY/TDD 1-800-829-4059.

titel 20 21 -1 2- 27 1 1: 24 :4 8 Business Register extract Netherlands Chamber of Commerce CCI number 72287497 Page 1 (of 2) Legal entity RSIN 859060317 Legal form Foreign Legal Entity: Société à Responsabilité Limitée (S.A.R.L.) The Chamber of Commerce recommends that this document be viewed in digital form so that its integrity is safeguarded and the signature remains verifiable. 20 21 -1 2- 27 1 1: 24 :4 8 Name Potoczny, Zaneta Gabriela Date of birth 17-10-1974 Date of entry into office 27-02-2019 (registration date: 12-08-2019) Name Merklein, Norbert Date of birth 03-05-1964 Date of entry into office 18-01-2021 (registration date: 29-10-2021) Authorised representative Name Van den Brande, Philip Theophiel Anna Date of birth 13-08-1974 Date of entry into office 24-07-2018 Title Branch Manager Contents of power of attorney There are other restrictions.

Avient acquired the Clariant Color business on July 1, 2020 (the “Acquisition Date”). This innovation drives performance and is reflective of consistent, strategic investments in technology and people Clariant Color business acquired July 1, 2020 10 30 40 14 22 35 19 18 41 Current Additional share needed to reach 2025 target BRAND OWNERS COMMITTED TO INCREASING USE OF RECYCLED MATERIALS 14 Brand Owner 1 Brand Owner 3 Brand Owner 2 Brand Owner 7 Brand Owner 4 Brand Owner 10 Brand Owner 6 Brand Owner 11 Brand Owner 5 Brand Owner 8 Brand Owner 9 Brand Owner 12 Brand Owner 13 Percent recycled plastic used: (examples and not exhaustive) (1) Latest year reported. Sustainable Development Goals • Emphasized climate change commitment o Announced 2050 operational carbon neutrality and RE100 commitment o Alignment to Science Based Targets Reduce Scope 1 & 2 greenhouse gas emissions by 60%.

Polyamides represent the highest polarity in Figure 1. REFERENCES 1. No Nylon Type Nylon description TPE Hardness Aging condition Peel, N/mm / lb / in 1 Capron 8333GHI Glass and impact 60A(1) Aging A 3.7 / 21 2 Capron 8333GHI Glass and impact 60A(1) Aging B 3.2 / 20 3 Capron 8333GHI Glass and impact 60A(1) Aging C 3.3 / 19 4 Capron 8333GHIHS Glass, impact and heat stabilized 60A(1) Aging A 3.2 / 20 5 Capron 8333GHIHS Glass, impact and heat stabilized 75A Aging A 3.0 / 17 6 Ultramid B3ZG6 Glass and impact 60A(1) Aging A 3.2 / 18 7 Zytel 70G33L Glass 60A(1) Aging A 3.9 / 22 8 Zytel 408AHS Heat stabilized and flow aid 60A(1) Aging A 3.7 / 21 9 Zytel 409AHS Heat stabilized and flow aid 60A(1) Aging A 3.2 / 20 Aging A: nylon substrate conditioned at room temperature and humidity for 4 weeks before TPE overmolding.

Avient acquired the Clariant Masterbatch business (CMB) on July 1, 2020 (the “Acquisition Date”). Clariant MB acquired July 1, 2020 COLORWORKS INSPIRATION. Operating Income $3,783 $4,300 (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition Previous Guidance Current Guidance $3,783 $4,650 $308 $410 $308 $430 $1.93 $2.80 $1.93 $3.00 (1) (1)(1) (1)(1) (1) $442 $457 $580 $1.74 $1.93 $3.00 FULL YEAR 2019 – 2021 ORGANIC GROWTH 22 Sales Adjusted EBITDA $3,981 $3,783 $4,650 + 17% (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition (1)(1) + 31% + 72% ($ in millions) 2021E Adjusted EBITDA 580$ Free Cash Flow 280$ Total Debt 1,860 Less: Cash (755) Net Debt 1,105$ 2021E Net Debt / Adjusted EBITDA 1.9x 23 BALANCE SHEET • Acquisition of Magna Colours completed on July 1 – expands sustainable solutions portfolio through water-based inks technology • Deleveraging to 1.9x net debt to adjusted EBITDA by the end of 2021 • Driven by record adjusted EBITDA performance and strong free cash flow generation from asset light business • Future cash deployment: M&A, opportunistic share repurchases and balance sheet / continued leverage reduction 3.5x 2.7x 1.9x Net Debt / Adjusted EBITDA (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition SUSTAINABILITY FOR A BETTER TOMORROW • Revenue from sustainable solutions expected to grow 14% in 2021 as our innovation efforts and collaboration with customers continues to accelerate • Investments centered around innovation and global sustainability megatrends o Enabling a circular economy – Technologies that allow for increased use of post-consumer recycled (PCR) material and improve recyclability of plastics o Light-weighting – Composites and CAI applications to reduce weight and material requirements, which minimize energy and carbon emissions o Eco-Conscious – Health and human safety applications as well as Avient’s alternative materials to replace lead, PVC, halogens, BPA and other less eco-friendly options 2016 2017 2018 2019 2020PF** Bio-polymers Reduced Energy Use Human Health & Safety Sustainable Infrastructure VOC Reduction Recycle Solutions Eco-Conscious Lightweighting Revenue From Sustainable Solutions* 2016-2020 $405M $455M *Avient Sustainable Solutions definitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) **2020 is Pro Forma to include full year of the Clariant Masterbatch business $340M $550M $790M 25 Key Updates • Includes Clariant Masterbatch performance • Increases disclosures and ESG data • Provides performance updates on 2030 Sustainability Goals • Commits to operational carbon neutrality in 2050 and 100% renewable energy by 2050 (RE 100) • Announces Avient’s participation in U.N.

CESA LIGHT – STANDARD OFFERINGS POLYMER FAMILY MATERIAL PRODUCT NAME PRODUCT TYPE DOSAGE Polyolefin PEA0820040 CESA Light PEA0820040 Stabilizer/Absorber 0.5–1.2% Polyolefin PRAN698456 CESA Light 7102 Stabilizer 1–4% HOPP PPA0820048 CESA Light PPA0820048 Stabilizer/Absorber 1–2% HOPP PPAN698522 CESA Light 7225 Stabilizer 1–4% Nylon ABA0820033 CESA Light ABA0820033 Stabilizer/Absorber 0.6–1.4% Nylon ABAN698415 CESA Light 1574 Stabilizer 1–2% Polyester FPA0687372 Hiformer™ Blocker (liquid) Absorber to 390 nm 0.05–0.10% Polyester NBA0820025 CESA Light NBA0820025 Absorber 0.5–2% Polycarbonate NCA0820016 CESA Light NCA0820016 Stabilizer/Absorber 0.75–3% Polycarbonate NCA0820017 CESA Light NCA0820017 Absorber 1–5% TPU RUA0820018 CESA Light RUA0820018 Absorber 2–4% TPU RUA0820030 CESA Light RUA0820030 Stabilizer/Absorber 2–4% Styrenic SLA0820013 CESA Light SLA0820013 Stabilizer/Absorber 1–3% Styrenic SLA0820012 CESA Light SLA0820012 Stabilizer 1.5–5% CESA Light additives can be used in combination with other CESA masterbatches, and formulations can be customized for most applications.

Handelsregister B des Amtsgerichts Mannheim Nummer der Firma: Seite 1 von 2 HRB 722072 Nummer der Eintragung a) Firma b) Sitz, Niederlassung, inländische Geschäftsanschrift, empfangsberechtigte Person, Zweigniederlassungen c) Gegenstand des Unternehmens Grund- oder Stammkapital a) Allgemeine Vertretungsregelung b) Vorstand, Leitungsorgan, geschäftsführende Direktoren, persönlich haftende Gesellschafter, Geschäftsführer, Vertretungsberechtigte und besondere Vertretungsbefugnis Prokura a) Rechtsform, Beginn, Satzung oder Gesellschaftsvertrag b) Sonstige Rechtsverhältnisse a) Tag der Eintragung b) Bemerkungen 1 2 3 4 5 6 7 1 a) PolyOne Deutschland GmbH b) Sitz verlegt; nun: Gaggenau Änderung der Geschäftsanschrift: Adolf-Dambach-Straße 2-4, 76571 Gaggenau c) Der Erwerb von Beteiligungen an Gesellschaften jeglicher Art, die Verwaltung von Beteiligungen und eigenem Vermögen sowie die Beratung über den Beteiligungserwerb mit Ausnahme rechtlicher und steuerlicher Beratung. 26.100,00 EUR Ist nur ein Geschäftsführer bestellt, vertritt er allein. Die Gesellschafterversammlung vom 14.04.2015 hat die Änderung des Gesellschaftsvertrages in § 1 Abs. 2 (Sitz) beschlossen. Der Sitz ist von Bendorf (Amtsgericht Koblenz HRB 7522) nach Gaggenau verlegt. 30.04.2015 Rinke 2 b) Bestellt als Palm, Christoph, Weiswampach / Luxemburg, *16.05.1963 einzelvertretungsberechtigt mit der Befugnis, im Namen der Gesellschaft mit sich im eigenen Namen oder als Vertreter eines Dritten Rechtsgeschäfte abzuschließen. 18.11.2016 Adam 3 b) Vertretungsbefugnis geändert bei Kronimus, Holger, Hilgert, *26.01.1968 einzelvertretungsberechtigt mit der Befugnis, im Namen der Gesellschaft mit sich im eigenen Namen oder als Vertreter eines Dritten Rechtsgeschäfte abzuschließen. 13.02.2017 Essert 4 a) a) a) Abruf vom 08.11.2021 19:42 Handelsregister B des Amtsgerichts Mannheim Nummer der Firma: Seite 2 von 2 HRB 722072 Nummer der Eintragung a) Firma b) Sitz, Niederlassung, inländische Geschäftsanschrift, empfangsberechtigte Person, Zweigniederlassungen c) Gegenstand des Unternehmens Grund- oder Stammkapital a) Allgemeine Vertretungsregelung b) Vorstand, Leitungsorgan, geschäftsführende Direktoren, persönlich haftende Gesellschafter, Geschäftsführer, Vertretungsberechtigte und besondere Vertretungsbefugnis Prokura a) Rechtsform, Beginn, Satzung oder Gesellschaftsvertrag b) Sonstige Rechtsverhältnisse a) Tag der Eintragung b) Bemerkungen 1 2 3 4 5 6 7 Firma geändert; nun: Avient Deutschland GmbH Die Gesellschafterversammlung vom 21.10.2021 hat die Änderung des Gesellschaftsvertrages in § 1 (Firma, Sitz) beschlossen. 08.11.2021 Martin Abruf vom 08.11.2021 19:42

Seite 1 von 7 1 a) Clariant Zweite Chemie GmbH Frankfurt am Main Am Unisyspark 1, 65843 Sulzbach (Taunus) c) Erwerb und die Verwaltung von Beteiligungen an Gesellschaften, insbesondere solchen aus dem Bereich der chemischen Industrie. 25.000,00 EUR Ist nur ein Geschäftsführer bestellt, so vertritt er die Gesellschaft allein. Gesellschaft mit beschränkter Haftung Gesellschaftsvertrag vom 26.03.2012 14.05.2012 Merz Fall 1 2 b) de Wall, Udo, Mainz, *12.11.1963 Dr. Wiesinger, Kai, Kelkheim (Taunus), *08.10.1973 van Issum, Andreas, Wiesbaden, *29.05.1979 13 b) Kinkel, Oliver, Steinen, *12.01.1963 08.07.2020 Fall 14 Seite 6 von 7 Hosch, Kolja, Seeheim-Jugenheim, *08.02.1980 14 b) Merklein, Norbert, Kronberg im Taunus, *03.05.1964 Kronimus, Holger, Hilgert, *26.01.1968 11.04.2021 Fall 17 Seite 7 von 7 Bergheim, Anke, München, *03.06.1970 15 a) Avient Colorants Germany GmbH Geändert, nun: Hohenrain 1, 56221 Lahnstein Die Gesellschafterversammlung vom 07.04.2021 hat eine Änderung des Gesellschaftsvertrages in § 1 (Firma) beschlossen. 15.04.2021 Fall 16 16 b) Berichtigung zur Hohenrhein 1, 56112 Lahnstein 30.04.2021 Fall 18 JP028108 Highlight

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.