Martha Macedo Sittoni

Mariana Negri Logiodice holds a bachelor’s degree from the Mackenzie Presbyterian University and a graduate degree in Civil Procedural Law from the Pontifical Catholic University of São Paulo (PUC-SP), with additional training in financial accounting from the Getúlio Vargas Foundation (FGV). Mariana is an associate attorney at Wald, Antunes, Vita e Blattner Advogados with over 15 years of experience in restructuring, insolvency and civil litigation. She worked in several s...

Jorge Alex Nunes Athias is a lawyer recognized by Best Lawyers in the practice areas of Environmental Law and Mining Law. Jorge Alex practices law in Belém, Brazil Best Lawyers has recognized Jorge Alex Nunes Athias since 2020. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Jorge Alex Nunes Athias is held by other lawyers.

Leticia Domingues Magalhães is a lawyer recognized by Best Lawyers in the practice area of Tax Law. Leticia Domingues practices law in Rio de Janeiro, Brazil Best Lawyers has recognized Leticia Domingues Magalhães since 2026. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Leticia Domingues Magalhães is held by other lawyers.

Pedro Ernesto is a senior lawyer at Vilas Boas, Lopes e Frattari Advogados with more than 10 years of experience in Corporate Law, Contract Law and Real Estate Law. Over the years he has been developing M&A transactions, corporate consulting, and business contracts, advising clients from several sectors of industry, such as mining, energy, sports (soccer), steel, civil construction, and others. Pedro holds a master’s degree in Corporate Law from the Milton Campos Law School (2017) a...

Prof. Dr. Marcelo von Adamek is the founding partner of Advocacia von Adamek, bringing to his firm more than 25 years of legal expertise across a diverse range of practice areas, including Corporate Law & Capital Markets, Business Contracts, Private Insurance, Mergers & Acquisitions, Restructuring & Bankruptcy, and Civil & Business Litigation. His comprehensive services include strategic consulting, litigation, and delivering legal opinions. Prof. Dr. von Adamek’s distin...

Christian Lopes is a partner of Vilas Boas, Lopes e Frattari Advogados with 20 years of experience in Corporate Law, Arbitration, Contract Law, Financial and Commercial Transactions. He was graduated from Universidade Federal de Minas Gerais (1998), and also is a specialist in Corporate and Economy Law by Fundação Getulio Vargas (2000), a Master of Law (LLM) by Columbia University (2002), and a Master and Doctor of Law by Universidade Federal de Minas Gerais (2003 and 2011). In ...

Partner Daniel has extensive experience in Dispute Resolution, Strategic Litigation before Superior Courts, Complex Contracts and Negotiations, Bankruptcy and Corporate Restructuring, Real Estate, Debt and Credit Restructuring, and Insurance Law . He has built a solid career in preventive and contentious corporate legal advisory , having served as General Counsel for national and multinational companies , where he coordinated projects involving corporate and tax restructurings, judicial asset...

Mariana is the Managing Partner and Head of Corporate and M&A at Leite, Tosto e Barros Advogados, bringing over two decades of experience in Corporate Law, Mergers & Acquisitions, Governance, Compliance, and Data Protection. As Managing Partner, she leads the firm’s strategic direction and ensures operational excellence across finance, IT, marketing, and administration—combining leadership vision with technical and business precision. As Head of Corporate and M&A, Mari...

Hamilton Dias de Souza is a lawyer recognized by Best Lawyers in the practice area of Tax Law. Hamilton practices law in São Paulo, Brazil Best Lawyers has recognized Hamilton Dias de Souza since 2010. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Hamilton Dias de Souza is held by other lawyers.

Joyce Roysen is a lawyer recognized by Best Lawyers in the practice area of Corporate Criminal Law. Joyce practices law in São Paulo, Brazil Best Lawyers has recognized Joyce Roysen since 2019. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Joyce Roysen is held by other lawyers.