Mr Mariano F. Grondona > Pérez Alati, Grondona, Benites & Arntsen > Buenos Aires, Argentina > Lawyer Profile

Pérez Alati, Grondona, Benites & Arntsen
Mariano F. Grondona photo

Work Department

Administrative Laws & Utilities
Aviation and Maritime Law
Banking & Financial Institutions
Energy – Electricity & Other Energies
Internet & Technology
Mergers & Acquisitions
Telecommunications, Media & Information Technology


Mr. Grondona is one of the founding partners of PAGBAM.

He focuses his practice mainly on Banking & Financial Institutions, Corporate Finance, Internet & Technology, and Telecommunications. Further, he has extensive experience in advising local and international companies on Aviation Law, Energy Law and Insurance.



Mr. Grondona was associated with Arnold & Porter in Washington, D.C., United States of America (1981‐1982).

He is a former syndic and member of the Board of Directors of the Banco Central de la República Argentina (the Argentine Central Bank).

Mr. Grondona was professor of Constitutional Law at the Universidad de Buenos Aires from 1984 through 2011.

He has authored the books “La Reglamentación de los Derechos Constitucionales. Teoría del orden de derechos“, Editorial Depalma, (1986) and contributed to “Constitución y Poder Político“, Editorial Astrea, (1987), “Joint Ventures with International Partners”, Butterworths, (1989), “La Justicia Abierta“, Marymar, (1990). In addition, Mariano Grondona Grondona has authored the following articles: “El Funcionamiento de los Tratados de Inversión”, “Exámenes de Constitucionalidad” and several articles published in legal reviews.


Spanish and english.


Mr. Grondona is a member of the Bar Association of the city of Buenos Aires. He is a member of the Executive Committee of the Sociedad Rural Argentina.


Mr. Grondona received his law degree from the Universidad Católica Argentina in 1980. He obtained a Master in Comparative Jurisprudence at New york University, School of Law (New York, NY, United States) in 1981.

Lawyer Rankings

Argentina > Corporate and M&A

Pérez Alati, Grondona, Benites & Arntsen’s team is distinguished by its ‘absolute commitment to the client’, ‘practical advice’ and ‘thorough knowledge of the law’. The firm represents a comprehensive mix of clients on M&A and corporate matters, from entrepreneurs and start-ups, through to private equity funds and public companies. An active participant in deals across all of Argentina’s core business industries, the team had a strong recent run in the energy, agribusiness and retail sectors. It is also well known for its record in multi-jurisdictional regional deals, such as its recent advice to CVC Brasil Operadora e Agência de Viagens on its $77m acquisition of tourism company Almundo, which spanned operations in several Latin American countries. Pedro Eugenio Aramburu, who provides ‘practical legal advice’, led the CVC deal and advises on a wide range of M&A, private equity and corporate finance matters. Santiago Daireaux is widely regarded as one of the leading transactional lawyers in Argentina and specialises in domestic, regional and international M&A and financing transactions. Other key contacts include founding partner Jorge Pérez Alati, who co-leads the practice together with Aramburu and Daireaux, banking and finance specialist Diego Serrano Redonnet and general practice partner Mariano Grondona. Associate Pedro Menéndez San Martín is also focused on corporate matters.

Argentina > Insurance

Pérez Alati, Grondona, Benites & Arntsen’s multidisciplinary practice has robust experience in transactional matters, particularly advising local and foreign insurance companies on M&A, commercial agreements and the establishment of operations. It has also been increasingly active on the contentious side of late, with major global insurers turning to the firm for assistance with class actions brought by consumer protection associations. Additionally, it regularly represents insured companies in claims concerning insured events. Founding partner Mariano Grondona is a key contact and handles both transactional and contentious work. Senior associate Lucila Guerrero specialises in aviation and insurance.

Argentina > TMT

Pérez Alati, Grondona, Benites & Arntsen leverages the firm’s wider full-service offering to advise TMT clients on a range of regulatory, IP, contentious and transactional matters. The team is best known for its work in the technology field, with Google standing out as a trophy client — it has recently represented the technology giant on several high-profile disputes. Mariano Grondona, who leads the Google work, is a key contact.

Argentina > Energy and natural resources > Oil and gas

Pérez Alati, Grondona, Benites & Arntsen’s 16-strong oil-and-gas group attracts praise for its ‘technical capacity and flexibility’. The team has a broad multidisciplinary focus, with experience in transactions, regulatory matters, dispute resolution, tax and environmental law. Petrolera El Trébol is a key client and the firm routinely advises the Phoenix Global Resources subsidiary on its E&P activities in Argentina. Francisco Javier Romano heads the team and brings to bear significant hands-on experience following in-house roles at Chevron, Pan American Energy and Bridas Corporation. Senior patners Mariano Grondona, Alan Arntsen and Diego Serrano Redonnet all participate in the sector, as does transactional partner Tomás Pérez Alati. Key associate support comes from Ignacio Payarola, who focuses on energy, renewables, oil and gas and administrative law and litigation.

Argentina > Banking and finance

Comparable to the best teams in Argentina’, Pérez Alati, Grondona, Benites & Arntsen attracts strong praise for its ‘experience and personal dedication’ and its ‘skill to handle complex matters’. The group handles a varied mix of banking, capital markets, structured finance and restructuring work, with extensive expertise in the energy, agribusiness and real estate sectors. It is also equally adept at both lender and borrower-side mandates, with local and multinational financial institutions, funds and corporations among its key clients. Diego Serrano Redonnet is widely recognised as a leader in the area and combines strong skill sets in banking, corporate and private equity. The group also includes ‘excellent professionalMaría Gabriela Grigioni, as well as founding partners Alan Arntsen and Mariano Grondona. Impressive younger lawyer Danilo Parodi Logioco was recently promoted to counsel.