Marval O’Farrell Mairal’s compliance and white-collar crime team is well-versed in matters ranging from the structuring of compliance programmes and internal investigations to criminal and civil proceedings. The practice is co-chaired by María Lorena Schiariti, who counsels clients on white-collar crime matters involving fraud, breaches of fiduciary duties and anti-money laundering; and Andrés O’Farrell, who assists with the design and implementation of compliance programmes and anti-corruption frameworks. Promoted to partner in August 2025, Milagros Ibarzábal advises on a mix of public ethics, integrity policies and regulatory processes. The group is further strengthened by a strong tier of senior associates including Francisco José Sama, Sofia Cimmarusti and Pilar Ocampo, who all contribute to internal investigations, interactions with public officials, transactional due diligence, preventive compliance advice and training programmes. Diego Fernández is recognised for his IT and data protection specialism.
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Key clients
Stone
Akamai
Tools for Humanity
Volvo
Henry Schain
Brother
GlobalLogic
Cristacol
Carrefour
Medtronik
Work highlights
Assisting Glencore Pachón with eight internal investigations related to workplace claims raised by its employees via the company’s reporting channel and with the compliance team; the investigations involve high-ranking employees and have rigorously tested Glencore’s investigation and whistle-blower protocols. As a result, some high rank employees were dismissed.
Assisted AWS (Amazon Web Services) with the preparation of its public sector compliance supplement for Argentina, which forms part of the company’s global compliance manual.
Assisting Cámara Argentina de Especialidades Medicinales in exploring the alternatives for entering into an agreement with the National Institute of Social Services for Retirees and Pensioners or (“PAMI” - a non-governmental public entity and the largest healthcare insurance provider in Latin America) to supply medicines to the Ministry of Health.
Lawyers
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Leading associates
Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.
Practice head
María Lorena Schiariti; Andres O'Farrell
Other key lawyers
Milagros Ibarzábal; Francisco José Sama; Sofia Cimmarusti; Pilar Ocampo; Diego Fernández