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Guillermo Uriarte Senen

Guillermo Uriarte Senén

Senior Associate

Guillermo is a corporate lawyer specialising in mergers and acquisitions.



Guillermo is a senior associate in Herbert Smith Freehills corporate division, specialising in corporate law and advising leading Spanish and foreign entities, primarily in relation to corporate transactions, mergers and acquisitions, joint ventures, private equity deals (LBOs) and infrastructure projects.

Guillermo's experience includes:

  • Consorcio Español Alta Velocidad Meca Medina, formed by Spanish leading rail and construction companies such as Abengoa/Inabensa, ACS/Cobra, Adif, Imathia, Indra Sistemas, Ineco, OHL, Patentes Talgo y Renfe, among others, on all legal aspects of the construction of the superstructure, systems installation, maintenance, rolling stock procurement and operation of the Haramain High-speed Railway (HHR) project Phase II, which links the two holy cities of Makkah and Medinah via Jeddah in Saudi Arabia. This is the biggest international contract ever won by Spanish companies and the first construction of a high-speed AVE (Alta Velocidad Española) line outside Spain
  • Telefónica on the intended €13,5 billion sale of O2 to Hutchinson Whampoa 
  • Abengoa Bioenergía on the tender process for the disposal of its biodiesel plants in Europe to Trilantic Capital Partners, which includes three plants located in Spain and one plant located in France
  • Trilantic Capital Partners on the acquisition of 100% of Pachá Group, a leading company in the entertainment sector, owned by the Urgell family 
  • Magnum Industrial Partners on the acquisition of Orliman Group, a company engaged in the production and sale of orthopaedic products




Guillermo has a law degree and a business administration certificate from the Universidad Pontificia de Comillas de Madrid. He speaks Spanish and English. He joined Herbert Smith Freehills from another international law firm in Madrid and is a member of the Ilustre Colegio de Abogados de Madrid (ICAM).

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