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Buenos Aires, New York

Mariano F. Grondona

Work 5411 4114 3044
Pérez Alati, Grondona, Benites & Arntsen

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.


Banking and finance

Within: Banking and finance

Pérez Alati, Grondona, Benites & Arntsen strikes the right note with its ‘extensive legal knowledge’ combined with ‘practical deal-making experience’, which together ‘ensure effective advice on transactional matters’ — across a broad spread of traditional lending, project finance, capital markets and structured finance. Particular praise is reserved for high-profile group head Diego Serrano Redonnet, who is held up as a ‘truly standout practitioner, whose extensive experience translates into sophisticated advice’. Among Redonnet’s highlights, he advised Banco Santander Río on three notes issuances totalling $653m. On the lender side, Alan Arntsen advised Export-Import Bank of China on amending a credit loan agreement. Mariano Grondona is another key name in a group that also counts BBVA Francés, Genneia and Morgan Stanley among its key clients.

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Corporate and M&A

Within: Corporate and M&A

Strong performerPérez Alati, Grondona, Benites & Arntsen is respected for its ‘strong tradition and track record in the corporate and M&A arena’. The group, which is particularly active in the energy, agribusiness and technology spheres, handles a significant volume of M&A, private equity, restructuring and joint venture transactions, with notable supplementary expertise in tax, antitrust, environmental and regulatory law. On the energy front, corporate finance specialist Diego Serrano Redonnet acted for San Antonio Oil & Gas Services on the $105m sale of San Antonio International Oil & Gas Services and Armadillo Drilling. The firm also secured a steady stream of real estate deals, which included Mariano Grondona advising Equity International and Goldman Sachs on the acquisition of both the Tortugas Open Mall and the Urbana Centro Empresarial complex of buildings, worth around $300m. Elsewhere, Santiago Daireaux, who co-leads the department, advised Lucens Capital on its $11.5m acquisition of Diransa San Luis. Founding partner Jorge Pérez Alati and corporate specialist Pedro Eugenio Aramburu co-lead the department alongside Daireaux. In 2018, associates Pedro Menéndez San Martín and Tomás Pérez Alati were both promoted to counsellor.

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Within: TMT

Pérez Alati, Grondona, Benites & Arntsen continues to advise an impressive roster of multinational clients on local telecoms, technology and media law. It is particularly robust on the technology front, where it advises Google and YouTube on regulatory, contractual and contentious matters. Mariano Grondona, who is well known for his expertise in heavily regulated industries, is the name to note.

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