Stefano Mastellone is a lawyer who graduated from the Pontificia Universidad Católica Argentina and holds a degree in Business Administration from Universidad Austral. His dual academic background allows him to approach complex legal matters from both legal and business perspectives, particularly where criminal law, regulation, financial activity, and institutional responsibility intersect.

Before entering private practice, he worked at Criminal Court of Guarantees No. 6 of La Plata, where he gained first-hand experience in criminal proceedings and the functioning of the criminal justice system. This experience contributed to his understanding of due process, procedural guarantees, and the role of judicial institutions in protecting individual rights.

In his current practice, he assists individuals and companies in criminal, economic, and compliance-related matters. His work includes criminal litigation, the analysis of complex corporate and financial matters, regulatory issues, and cases involving fraud, money laundering, and other economic offences.

At FIV, Stefano contributes to matters involving the relationship between criminal justice, institutional accountability, and the protection of fundamental rights, with a particular interest in cases where economic or corporate conduct may have broader legal and social consequences.

In addition to his professional practice, Stefano has developed an academic interest in constitutional and public law. He has served as a teaching assistant in Constitutional Law at the Pontificia Universidad Católica Argentina and has published academic work in the legal field.

He is fluent in Spanish and English.