Sébastien PÉRONNE


Sébastien holds a Master’s in Private Law (Paris Descartes University, 1992) and a DSUP in Business Public Law (Panthéon Sorbonne University, 1996). He began his career in the firm Poitrinal & Associés in 1997, before joining Fidal Paris in 2001. He joined Fidal in Bordeaux, Mérignac in 2012 and finally, in January 2017, the firm Brunswick Avocats in Bordeaux, as a partner in the private equity / mergers and acquisitions department. He is registered with the Bordeaux Bar.

Sébastien co-founded Altaïr Avocats on 1 January 2019.

He works mainly in the field of company law, private equity transactions, and mergers and acquisitions. He uses his extensive experience to advise his clients on structuring and creating investment vehicles and support portfolio management companies at the various stages of their corporate life (AMF authorisation and monitoring of their general or specialist programme(s)). Finally, he advises project backers, directors and senior managers on their status and the incentive schemes available to them.

Languages :

  • French
  • English
  • Italian

Areas of expertise :

  • Corporate
  • Capital Investment 
  • LBO
  • Mergers and acquisitions
  • Alternative Investment Fund Manager Regulation (AIFM)

Deals, Publications and Seminars :

  • Advice to Easy Live and its founders (Philippe Laurent, Clément Sanchez and Nicolas Ehrmann) on raising funds of €2.1M
  • Advice to TreeFrog Therapeutics on raising funds of €7.1M in Series A
  • Advice for the partners at Léon Vincent Overseas on its sale to 21 Capital Partners
  • Advice to Medgest’s partners on selling their stake to Verso Healthcare
  • Advice to GSO Capital and Charente Périgord Expansion on their investment in Altiore MT / Informatique 
  • Advice to LNC Therapeutics and its general management on raising funds of €6.2M

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