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Agustín Siboldi

Work +541143461000
Estudio O'Farrell

Work Department

Energy & Natural Resources - Telecommunications, Media & Entertainment - Competition/Antitrust - Pharmaceutical & Health


Agustín Siboldi is a partner in Estudio O´Farrell’s Public Law and Economic Regulation Department. 

Mr. Siboldi practice focuses on the following areas related with the economic regulation: antitrust law, either economic concentrations as well as the investigation of anticompetitive practices; telecommunication; hydrocarbons exploration, concession, exploitation, and distribution; gas generation, transport, distribution and commercialization; pharmaceutical products marketing; as well as other sector of the economy with a strong regulatory importance.


Spanish, English and Portuguese.


Member of AADT, International Bar Association, Instituto Argentino de Petróleo y Gas, Foro Competencia, City of Buenos Aires Bar, Brazilian-Argentine and Mexican-Argentine Chambers of Commerce.


Law Degree, Buenos Aires University. Post degree in Telecommunications Law, Buenos Aires University. Master´s degree in Business Law, ESEADE. Post degree in Telecommunications, AADT.


Competition and antitrust

Within: Leading lawyers

Agustín Siboldi - Estudio O'Farrell

Within: Competition and antitrust

At Estudio O'Farrell, economic regulation partner Agustín Siboldi is the key contact for competition law. The firm is a popular choice for infrastructure, energy and public law-related matters and is representing YPF on the competition aspects of its acquisition of a controlling shareholding in Apache’s Argentine assets. Other representative clients include Axion Energy and Claro Argentina.

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Within: Leading lawyers

Agustín Siboldi - Estudio O'Farrell

Within: TMT

Estudio O'Farrell’s TMT offering has a strong focus on regulatory matters under the leadership of high-profile economic regulation expert Agustín Siboldi. The group is particularly well known for its prominent telecoms practice and it is a popular choice for administrative litigation in the telecoms sphere. Recent mandates saw the team file an unconstitutionality action challenging a provincial law on behalf of Claro Argentina and Telmex Argentina. The group also advised Telefónica de Argentina and Movistar Argentina on amendments to the country’s media and telecoms law and the proposals for the new regulatory framework. Other key clients include Comunicaciones y Consumos, Nextel Communications Argentina and Personal Argentina.

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Argentina: Energy and natural resources


Within: Electricity

Estudio O'Farrell’s practice, which demonstrates broad capability in both regulatory and transactional matters, is commended for its ‘strong commitment to the client’. The ‘creative and problem-solving’ team is led jointly by the ‘very experiencedUriel O´Farrell and economic regulation specialist Agustín Siboldi; it also benefits from the senior experience of ‘fantastic administrative law partnerMaría Agustina Fanelli Evans and Fernando Raúl García Pullés. Recent highlights include advising Argentina’s largest electricity distributor, Edenor, on the renegotiation of the electricity distribution concession agreement for the City of Buenos Aires and the north of Buenos Aires province. It is also assisting Pampa Energía with the auction proceedings for three new power electricity generation plants. Compañía General de Electricidad, Energy Consulting Services and YPF Energía Electric are also on the department’s books.

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Oil and gas

Within: Oil and gas

Estudio O'Farrell’s oil and gas practice, which sits within the firm’s public law and economic regulation department, has a strong focus on regulatory and contentious issues. Led jointly by Uriel O´Farrell and Agustín Siboldi, the team covers a wide range of upstream and downstream matters including exploration, transportation and distribution. The firm’s strong links to YPF ensures key roles on major projects and in one notable mandate it is representing YPF on its joint venture with Petronas to develop the La Amarga Chica concession. The group also recently advised Gas Natural Ban on the renegotiation of the license agreement for natural gas distribution in Buenos Aires and the north of Buenos Aires province.

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