thales castanheira

Thales castanheira

Practice Areas:

Corporate & M&A 

Commercial Contracts

Tax & Regulatory



Lawyer focused on corporate law, commercial contracts, tax and regulatory.



Bachelor of Laws (JD) at Federal University of Rio de Janeiro (UFRJ).



“Brazilian Agribusiness and Fob Export Agreements: International Arbitration According to FOSFA Rules”, written in partnership with Gustavo Coelho and part of the book “XXI International Congress of Maritime Arbitrators: Articles of the Brazilian Committee” (2020);

“Pre-emptive action and antitrust remedies” (“Atuação preventiva e remédios antitruste”), written in partnership with Gustavo Coelho (2020);

“Competition and innovation in the securities market: the regulatory sendbox of the Brazilian Securities and Exchange Authority” (“Concorrência e inovação no mercado de capitais: o sandbox regulatório da CVM”), written in partnership with Gustavo Coelho (2020); and

“Amendments to the Brazilian Corporate Act – new rules for Brazilian corporations”, written in partnership with Gustavo Coelho (2021).


Portuguese, English and Spanish

Contact us


Rua Helios Seelinger, 155, Barra da Tijuca, Rio de Janeiro, RJ Brasil • 22640-040

Phone number

+55 21 3747 1757


If you would like to join our firm, please send your résumé to

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