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Posse Herrera Ruiz

Work +57 1 325 7300
Fax +57 1 325 7313

Oscar Tutasaura

Work +57 – 1 3257300
Posse Herrera Ruiz

Work Department

M&A and Corporate Law


Oscar Tutasaura is a Partner at Posse Herrera Ruiz. His practice focuses on Corporate Law, Mergers and Acquisitions.


During his practice in Colombia and in the United States, he has advised several domestic and international companies in cross-border mergers and acquisitions, Rule 144A/Regulation S bond offerings and in the establishment and maintenance of ADR programs in the U. S. capital markets. Before joining Posse Herrera Ruiz, he worked as an associate in a local law firm and as Associate at the New York offices of Sidley Austin LL.P. He is a faculty member at Universidad del Rosario where he teaches Civil Law. Oscar received a J.D. from Universidad del Rosario, has post graduate studies in Commercial Law at Universidad de los Andes and received an LL.M. in International Legal Studies from Georgetown University. He is admitted to the practice in Colombia and in the State of New York.


His native language is Spanish and he is fluent in English.


• Georgetown University Law Center LL.M. in International Legal Studies, 2004 Washington, DC USA • Universidad de los Andes Graduate Degree in Commercial Law, 2003 Bogotá, Colombia • Universidad del Rosario J.D., 2002 Bogotá, Colombia


Corporate and M&A

Within: Leading individuals

Oscar Tutasaura - Posse Herrera Ruiz

Within: Corporate and M&A

Fielding a 29-strong practice group, Posse Herrera Ruiz is ‘clearly one of the best’ in the field, and is ‘very good in the negotiation process’ of M&As in particular. Recent mandates saw practice head Jaime Herrera (‘a good strategist and very committed to his clients’) and Oscar Tutasaura lead the advice to BogotĂĄ Capital District and Grupo EnergĂ­a BogotĂĄ (GEB) in the two-phase (local and international), $680m sale of the former’s 10.6% stake in GEB. Working in conjunction with the ‘very disciplined and extremely accurate’ Gabriel SĂĄnchez, Herrera also co-led the advice to Terpel on the acquisition of ExxonMobil’s lubricants business in Colombia, Peru and Ecuador, the fuels business of ExxonMobil Ecuador, and the operation and commercialisation of fuel for Lima’s airport. Meanwhile, JosĂ© Alejandro Torres assisted BTG Pactual and Inverlink Estructuras Inmobiliarias with a joint venture agreement to manage a collective investment real estate fund. Jaime Cubillos is another key figure in the practice group; senior associates Vivianne Baptiste, Carolina HernĂĄndez and the US and Colombia-qualified Lina VĂ©lez are also noted. The firm also has an association with Spanish firm Cuatrecasas for Ibero-Colombian matters. Clients include Quicorp, Cementos Argos and Australis.

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Within: Insurance

Posse Herrera Ruiz primarily deals with insurance and reinsurance matters related to infrastructure projects, where it represents both lenders and sponsors; for example, the practice recently advised Financiera de Desarrollo Nacional on structuring its risk matrix and drafting its insurance requirements. The four-strong team, led by Oscar Tutasaura, also assisted POMA on its insurance clauses concerning the Pereira and the Picacho cable car projects in Medellín. Other clients include CNPX, QBE Europe and Hamilton Re.

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