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Guy Deillon

Associated Partner

Position: Partner , Associated Partner
Practice Areas: Capital Markets , Corporate & M&A , Venture Capital
Field-Display: Capital Markets Team , Corporate & M&A Team , Venture Capital Team , Startups

Guy Deillon focuses on domestic and international mergers and acquisitions as well as private equity transactions. Further, he assists companies in financings as well as on general corporate, stock exchange and capital markets law matters.

Guy Deillon's clients benefit from his strong focus on goals and results as well as his high sense of responsibility. His analytical strength and logical approach support his focus on the business perspective and problem solving. He always demonstrates a clear and distinct position in a diplomatic and collaborative spirit.


+41 44 254 55 55



Admission to the Bar

Admitted in Switzerland (2011) 

Practice Areas

  • Corporate & M&A
  • Venture Capital
  • Capital Markets


  • Columbia Law School (LL.M., 2018)
  • University of Fribourg, Humboldt University of Berlin (MLaw, 2008)


  • French
  • German
  • English


  • Zurich and Swiss Bar Association
  • Swiss Private Equity & Corporate Finance Association
  • Swiss LegalTech Association


Melanie Cica
+41 44 254 55 15

Monika Bren
+41 44 254 55 48


Subject: Corporate & M&A
Paper: NZZ
Reading time: 3 Min
Autor: Guy Deillon

Company succession and Generation Z

Sale to a private equity fund should be considered in succession planning.

From the Middle Ages until the middle of the 19th century, succession was govern...

Autor: Guy Deillon

Transfer of private bank client portfolios

Banks are now facing major challenges. Once the uncertainties related to the US program are resolved, a new wave of restructuring is expected. While large banks may be interested in acquiring new portfolios, it is mainly the small and medium-sized private banks that will have to fundamentally rethink their business model in order to maintain their profitability.

To the publication