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Founding Partner
Fabien Gillioz

Fabien has a long-standing and broad experience in providing corporate advices to Swiss and International clients, ranging from entrepreneurs and SME companies to regulated businesses.

He is specialized in corporate, commercial law and data protection regulations. His experience enables him to assist companies at every stage of corporate life, including incorporation, restructuring, relocation and liquidation.

He also assist Fintech Companies on Swiss financial laws and regulations.


  • Mail : fgillioz@oalegal.ch
  • Tél : +41 22 786 88 66
  • E-fax : communications@oalegal.ch
  • Linkedin : Fabien Gillioz

Something you should know

Inspiration is our force. Fabien uses also his creative skills as a film producer.


  • Corporate and Commercial
  • Banking and Finance
  • Fintech
  • Data Protection and Privacy


  • University of Geneva (Lic.iur.)
  • Boston University (LL.M.)


  • French
  • English
  • German


  • Member of the Geneva Bar Association
  • Member of the Commission on Innovation and Modernization of the Geneva Bar Association
  • Member of the Capital Market Technology Association
  • Member of the Swiss Legal Tech Association
  • Member of the Geneva Business Law Association
  • Member of the Association of International Business Lawyers
  • Chairman of the Commission for Continuing Legal Education of the Geneva Bar Association
  • Co-founder of the Geneva Fintech Association
  • Municipal Councilor of Meinier in the environment and finance commissions


OA Legal is a boutique law firm driven by an entrepreneurial spirit providing tailor-made legal services

When you work with us, you work with a team dedicated to find the right solutions for you. We offer new ideas and new methods to deliver creative, innovative and tailor-made legal services.