ARGENTINA
Brazil
Paraguay
Chile
Uruguay
Buenos Aires
Argentina
Trends and Developments Contributed by: Aranzazú Sesma Lasierra, Roberto Durrieu and Tomás Guido Estudio Durrieu Estudio Durrieu specialises in international law, com - pliance, and economic criminal law, encompassing within these areas the various branches of punitive law, corporate governance, and global business law. The firm’s work extends to both regional and interna - tional courts. Through a network of correspondents across the country and abroad (RIEDPE), the firm provides specialised assistance in anti-fraud and as - set recovery. Its clients include oil and energy com -
panies, national and foreign banks, sovereign states, and economic groups, among others. The firm is also proud to be listed among the law firms recommended by the embassies of the United States, the United Kingdom, Italy, Israel, Canada, Russia, and China. Estudio Durrieu is experienced in advising govern - ments, individuals, financial institutions, NGOs, and multinational corporations.
Authors
Aranzazú Sesma Lasierra is a lawyer specialising in economic crimes, with a particular focus on the financing of terrorism and money laundering. She has been an associate since 2023. During her career, she has
and penal compliance. With more than 25 years of legal experience, he has handled some of the most significant and complex cases in the fields of white-collar crime, international litigation, asset recovery, compliance, and tax offences, as well as AML/CFT, corruption, extradition, international co-operation, corporate investigations, and cybercrime.
represented both local and international companies in matters involving business crimes, white-collar corporate investigations, corruption, and other economic crimes before national and international courts. Aranzazú has extensive experience advising clients in internal investigations as well as preserving evidence for future proceedings.
Tomás Guido is a lawyer specialising in economic crimes and holds a PhD focused on issues related to the financing of terrorism and money laundering. He joined the firm in 2017 and is currently a junior partner. His
Roberto Durrieu is a sought-after criminal lawyer in Argentina, particularly within the business sector, due to his extensive courtroom experience and his involvement in complex negotiations related to
main areas of practice include business crime litigation and white-collar corporate investigations. He has extensive experience representing both local and international clients in cases involving allegations of bribery, fraud, breach of fiduciary duties, money laundering, and other financial crimes before national and international courts. In addition, Tomás advises clients on compliance matters, internal investigations and audits, and provides legal support in the collection and preservation of evidence for court proceedings.
business offences, both judicial and extra-judicial. He holds a DPhil in Law from the University of Oxford and a PhD from a leading Argentine university. Roberto is the managing partner of Estudio Durrieu, the largest law firm in Argentina specialising in white-collar crime, asset recovery,
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