Sergio Michelsen Jaramillo

Sergio Michelsen Jaramillo



  • Corporate
  • Mergers and Acquisitions
  • Telecommunications, Media and Technology
  • Trust and Estates

WSG Practice Industries


Brigard Urrutia

WSG Leadership

WSG Boad of Directors
Chairman Emeritus 2014/ 2015
WSG Boad of Directors
Chairman 2013/ 2014
WSG Boad of Directors
Chairman Elect 2012/ 2013
WSG Boad of Directors
Secretary 2011/ 2012
WSG Boad of Directors
Director 2010/ 2011
WSG Boad of Directors
Director 2009/ 20010
WSG Regional Council
Past Member
IBA Group
Mergers & Acquisitions Group
Technology, Media & Telecommunications Group
Trade and Investment Group
Member of Brigard Urrutia since 1992 and partner since 1994. With more than 30 years of extensive experience. Mr. Michelsen advises leading local and foreign companies in Corporate/M&A transactions as well as clients in respect of telecommunications, media and technology matters. He also counsels prominent families in connection with their private wealth. Over the course of his distinguished career, he has consistently been recognized in Colombia and internationally as one of Colombia’s leading M&A and TMT practitioners. He has acted as lead counsel in many of Colombia’s largest and most complex transactions.

Among his most prominent transactions some of which have won the “Deal of the year” award in Latin America is the advice for SABMiller in the acquisition through a merger of Bavaria S.A., the second largest brewer in South America for US$7.8 billion, and the subsequent integration of AB InBev, he advise the French retailer Casino in the sale of a controlling stake in GPA in Brazil and Libertad in Argentina (US$ 1.8 billion) and advising Millicom International in its merger with UNE-EPM (valued at US$4.4 billion).

He has participated in transactions for a value in excess of US 60 billions along his professional career.

Mr. Michelsen received his JD from Universidad de los Andes and holds a Master's degree in Commercial Law from the University of Paris II, France. He also did an intensive course in Project Finance at the Euromoney Institute in New York and several negotiation and management courses at Harvard University. He has also been a professor and frequent lecturer in the national and international realm.

He has been consistently highly recommended by specialized researchers such as Chambers & Partners, Legal 500, Latin Lawyer, The Global Telecoms Business Guide, The World’s Leading Lawyers Who's Who Legal and The European Council Industry Report as one of Colombia’s most prominent lawyers in his areas of expertise.

In 2016 he was recognized by the Magazine Revista Dinero, as one of the favorite attorneys of big companies and as one of the most named attorneys as expert in mergers and acquisitions.

Mr. Michelsen is a member of the board of directors of some of Colombia’s most prominent companies such as Grupo Sura S.A., Grupo Semana, Itaú and Publicar and Fundación Cardio Infantil.

He also services on the boards of highly respected not-for-profit organizations.

Bar Admissions

Admitted to practice law in Colombia in 1984. Mr. Michelsen-Jaramillo is member of the International Bar Association, American Society of International Law, Institute for Transnational Arbitration, the Center for Telecommunications Studies and YPO Young Presidents Organization.


Mr. Michelsen received his JD from Unviersidad de los Andes, Bogota, 1984; He has a master's degree in commercial law from the University of Paris II, France and an intensive course on the US legal system from the University of Texas, at Dallas, in 1986.
Areas of Practice

Corporate | Mergers and Acquisitions | Telecommunications, Media and Technology | Trust and Estates

Professional Career

Significant Accomplishments

* Highly recommended lawyer in Corporate Law and Mergers & Acquisitions in accordance with PLC Which Lawyer 2006
* Highly recommended lawyer in Corporate Law and Mergers & Acquisitions in accordance with Latin Lawyer, 2006
* Highly recommended lawyer in Communications in accordance with Who's Who Legal. 2006
* Recommended lawyer in IFLR 1000, The Guide to the World's Leading Financial Law Firms. 2007
* Lawyer with the highest qualification and recommendation for Colombia in Corporate and Commercial Law in accordance with Chambers Global, The World's Leading Lawyers for Business. 2007

Professional Associations

  • American Bar Association
  • International Bar Association

International Bar Association
American Society of International Law
Institute for Transnational Arbitration
Center for Telecommunications Studies
Leadership Chair of Lex Mundi's E-commerce Practice Group
Regional Vice-Chair Antitrust and Competition Practice Group


Mr. Michelsen participated as a speaker at the ITU conference held in Geneva in September of 1997 in connection with which he published the article "Colombia: Regulatory Environment to Achieve an Interactive Society". He also acted as speaker at the third annual telecommunications and informatic summit, sponsored by the Center for Investigation in telecommunications, where he gave a speech on the interactivity of telecommunications and information technology.

Professional Activities and Experience

Mr. Michelsen worked as a lawyer at the Exchange Control Superintendency, (Bogota, 1983 - 1984), Cavalier Abogados, (Bogota, 1985-1987), and Baker & Botts, (Houston, USA, 1986). He was also Secretary General and Legal Advisor at the Bogota Stock Exchange (1987 - 1988), and headed the Legal Department of Shell Colombia (Bogota, 1988 - 1991).

Mr. Michelsen currently teaches at the Law and Business Administration Faculties at the Universidad de los Andes. Furthermore, he has been a Lecturer at Universidad Javeriana, Universidad de los Andes, Universidad Externado de Colombia, Universidad del Rosario and Bogota's Chamber of Commerce.


Promotion of Technologies to Ease Interaction with Public Entities
Brigard Urrutia, May 2020

Promotion of technologies to ease interaction with public entities Government establishes general guidelines for use of digital citizen services, in order to facilitate citizen interaction with public entities. The Ministry of ICT issued Decree 620 of 2020 to establish general guidelines that private (when performing administrative functions) and public entities must follow in the use and operation of digital citizen services...

SIC Reinforces Protection for Rights of Users of Telecomms Services
Brigard Urrutia, April 2020

The Superintendence of Industry and Commerce (SIC) issued an administrative order, through Resolution 19012 of 2020, to providers of telecommunications networks and services providers (TNSP) to safeguard the rights of its users. We highlight the following measures: For mobile phone and internet operators: inform users of postpaid and prepaid services of their rights during the state of emergency and the rules that apply to the suspension of service for non-payment on time...

Legal Privacy Waiver to Combat COVID-19
Brigard Urrutia, March 2020

Through External Circular No. 001 of March 23, 2020, the Superintendence of Industry and Commerce (SIC) made clear that mobile phone operators and private entities in general have legal grounds to provide to the National Planning Department (DNP), as well as to public entities that so require it, personal data that is necessary to address, prevent, treat and/or control the spread of COVID-19 and mitigate its effects...

Additional Articles

Mr. Michelsen has published the following articles: "Stabilization Clauses in International Contracts", 1984; "The Protection of the Commercial Name", 1986; "Affiliates and Group of Companies" 1996; "Telecommunications Sector in Colombia", 1996. Telecommunications article entitled "Colombia: Revolution in order to achieve evolution", 1997; "Project Finance in Colombia", 1997, "Opportunities and liberalization in the Colombian Telecoms market" 1999.