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Sébastien Nicolas
Senior Manager – Transaction Services/M&A

Sébastien Nicolas

Sébastien Nicolas is Senior Manager in the service line Transaction Services/M&A. He focuses on Financial Due Diligences (buy and sell-side), Valuations and M&A Advisory.

Professional experience

Sébastien joined the Transaction Services/M&A service line beginning 2017 and has been involved in several Due Diligence, Valuation and M&A Advisory projects. His activities include transactions with Swiss and international clients focusing on local and cross-border deals in Europe, USA and Asia.

As part of his role, he has supported clients and managed project in the Financial services, Healthcare, Industrial production and manufacturing, Logistics, Technology and Professional services industries.

Prior joining Grant Thornton, Sébastien gained experience working for two professional services firms (Big 4) in Audit Financial Services in Switzerland. His focus was Financial Institutions such as Banks and Asset Management firms.

He also worked on several Healthcare, Industrial, Energy & Commodity Trading firms and Non-profit organizations mandates. The local and international clients were unregulated, regulated and listed. Sébastien has gained experience in Accounting and Reporting according to the Swiss Code of Obligations, Swiss GAAP FER, RRV FINMA, KAG, US GAAP and IFRS.

Professional qualifications and memberships

Sébastien holds a Master’s degree in Finance and a Bachelor’s degree in Business and Economics from IAE Lyon School of Management.


In addition to his mother tongues French and Finnish, Sébastien speaks fluent English and German.

Download CV PDF [ 164 kb ]

  • MSc in Finance
  • BSc in Business and Economics
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Sébastien Nicolas
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Senior Manager – Transaction Services/M&A
Sébastien Nicolas
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