Management, Boards & Committees

Holds a law degree with specialization in business administration. He is a founding shareholder of the Ambipar Group, with experience in commercial, operational and administrative matters.

Mr. Guilherme Patini Borlenghi has vast experience working at Ambipar, having spent the last 13 (thirteen) years in various positions within the organization. Guilherme led strategic decisions relative to capital allocation and M&A, expanding and consolidating the position of Ambipar Response in the Brazilian market, and the entry and growth in global markets.

Holds a bacherlor’s degree in accounting from the Salesian University Center of São Paulo and a graduate degree in strategic accounting management and international accounting from the Pontifical Catholic University of Campinas. He has extensive experience in accounting, tax, planning and finance. He has worked for us since 2014. Previously, he was a controllership consultant at Camargo Corrêa S.A., from 2012 to 2014, a senior accounting analyst at the Camargo Corrêa Group, from 2007 to 2012, and an accounting analyst at Dispan Indústria e Comércio Ltda., from 2003 to 2007.

Mr. Ricardo has experience in the areas of Investor Relations (IR), Finance, and Controllership. He has previously worked at several publicly traded companies, such as Itaú Unibanco, MAHLE Metal Leve, Paraná Banco, Helbor, Smiles, and Multilaser. Between 2022 and 2024, he held positions at Grupo Ambipar as IR Officer of Ambipar Participações e Empreendimentos and as CFO and IR Officer of Environmental ESG Participações S.A. Prior to returning to Grupo Ambipar, he served as CFO and IR Officer at Brasil Terrenos Holding S.A. from 2024 to 2025. At IBRI (the Brazilian Institute of Investor Relations), he held various leadership roles between 2008 and 2022, including serving as Vice President from 2015 to 2017. In 2021, he earned the Level 2 Investor Relations Professional certification and studied Business Administration at ESPM/SP and PUC/SP.

Holds a degree in business administration from the University of São Paulo. She has been part of our management since 2012, acting as deputy director, assisting the Chief Executive Officer in her duties.

Graduated in Human Sciences from the University of Guarulhos, with an MBA in Financial Management from FGV and in Taxation from the University of São Paulo.
She has worked at the Ambipar Group since 2000, with a solid career in the financial administrative area, with experience in team management, change management, project management and administrative and financial departments. Worked on the implementation and coordination of the Shared Services Center (SSC).

Graduated in Accounting from the Pontifical University of Campinas and Bachelor of Law from Universidade Metodista de Piracicaba. Since 1986, he has worked at Zanini Audit Fisco Contábil, a company specialized in auditing, having also worked at Reratex Comercial e Imobiliária Ltda. from 2002 to 2012.

Holds a degree in business administration from Universidade Mackenzie and a graduate degree in accounting from the School of Economics of the University of São Paulo. He also holds a degree in accounting sciences from Universidade Paulista (UNIP), an MBA degree in internal auditing from Coimbra Business School, and a degree in Management of Energy Companies from FIPECAFI/USP. Since May 2019, he has served as an executive director of M. Peccin Auditoria e Consultoria Ltda., an auditing and consulting company, focused on providing process auditing, management and accounting services, business consulting, risk management and compliance assessments, financial, accounting, tax and social security diagnostics, due diligence and special projects. Mr. Peccin has served, since June 1999, as manager of the internal audit department of Companhia Energética de São Paulo – CESP. Before that, he worked at Pepsico Inc. as a senior auditor, at Touche Ross & Cia. S/C Auditores Independentes, as an auditor, and at Banco Itaú S.A., as an administrative clerk. He holds a professional certificate in social security from ICSS with an emphasis on management. He currently serves as a member of the deliberative council of Fundação CESP, representing sponsor CESP 2000/2019, in addition to having been Vice-President of the council since 2008. He is also associated with the Institute of Internal Auditors of Brazil, the Regional Board of Directors, the Regional Council of Accounting, the Brazilian Institute of Corporate Governance and the Institute of Independent Auditors of Brazil.

Mariana Loyola Ferreira Sgarbi has been a partner at Loyola Advogados since 2017. Before starting her own law firm, Ms. Loyola was a senior lawyer at Fialho, Salles Advogados from 2015 to 2017. Ms. Loyola has served as coordinator and legal negotiator for several M&A transactions and structuring of investments since then. She holds a bachelor’s degree in law from Universidade Federal de Minas Gerais, a master’s degree in business law from Universidade Federal de Minas Gerais and a certificate of business administration with emphasis on finance from IBMEC.