Marval O’Farrell Mairal handles highly sensitive corporate matters, particularly concerning accusations of employee fraud or bribery involving public officials and other third parties. The practice assists with internal investigations, including interviews with employees and whistleblowers, as well as frequently providing training sessions and helping companies improve internal codes of conduct to reduce risks of criminal or civil liabilities. The practice is led by regulatory and administrative law specialist María Lorena Schiariti and criminal litigator Andrés O’Farrell, who assists in investigations and audits. The sizeable team also includes public and administrative law-focused Milagros Ibarzábal, who was raised to the partnership in August 2025, and senior associate Francisco José Sama, both of whom assist with designing compliance programs; senior associate Sofia Cimmarusti, who advises on foreign exchange regulations; and associate Victoria Francia, who is active in anti-bribery and corruption investigations.
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Work Department
Compliance, Anti-Corruption & Investigations / Public & Administrative Law
Position
With over 26 years of experience working in Marval, she has intervened in matters of the highest complexity and impact, providing comprehensive advice on issues related to her areas of practice.
As specialist in administrative law, she assists her clients both with advisory tasks, transactions, and disputes, particularly on issues regarding infrastructure, energy and public services, government contracts, and regulated activities in general (food, agribusiness, banks and pharma).
In addition to her development in general administrative and regulatory law, she has focused on issues related to public ethics, anti-corruption, integrity policies and internal investigations, especially in the context of interactions with public officials and government contracts.
Career
Lorena Schiariti is a partner of Marval to the Regulatory and Administrative Law Team and the Compliance, Anticorruption and Investigations Team.
Languages
English & Spanish.
Memberships
She is a member of the Buenos Aires Bar Association.
Education
Ms. Schiariti graduated the University of Buenos Aires Law School in 1997 with a specialization in Administrative Law and pursued a Master of Law and Economics at the Universidad Torcuato Di Tella, Argentina (2001-2002). She has published several articles on matters related to her practice area.
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Testimonials
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- 'Impressive. Great team work.'
Key clients
- Arauco
- Amazon Web Services
- Tools for Humanity
- Davis Polk
- Microstrategy
- ICBC
- Meta
- White & Case
- Carrefour
- Maeda Ayres Sarubi
Work highlights
Assisting Compañia de Tierras del Sur in designing its compliance program, developing the client’s whistleblower channel and code of conduct for third parties and suppliers.
Assisting Tools for Humanity in developing and implementing an action plan to coordinate an educational visit for federal, provincial, and municipal public officials to World Coin’s headquarters.
Advising Oracle regarding an agreement entered into with Banco de la Nación Argentina years ago, which has been extended.