Thibault Guillemin is a preferred contact of companies and their managers facing complex issues and reputational risks. He advises as well as litigates on situations entailing simultaneous regulatory, corporate, criminal and social aspects.

He leads our Ethics & Compliance practise. As such, he assists legal, compliance and HR departments in setting up, evaluating and strengthening their compliance programs (codes of conduct, internal audit, risk analysis, KYC, professional alerts, training), both with regard to French legislation (Sapin II, devoir de vigilance) and foreign ones (FCPA, UKBA).

Thibault also defends companies and their managers facing internal investigations and/or enforcements. He represents for many years several companies and individuals in high-profile cases.

As a former associate in a French law firm of supreme court attorneys (avocats au Conseil d’Etat et à la Cour de cassation), he is particularly involved in public matters. He has recently advised and defended several institutions in matters of corruption, conflict of interests and favoritism.

A well-identified player in the nonprofit sector, institutional clients and family offices are also often requiring his assistance regarding legal issues related to not-for-profit organizations.


Paris-Dauphine University, University degree, Ethics & Compliance, Anti-corruption Law, 2017

Admitted to the Paris Bar, 2002

Institut d’Études Politiques de Paris (Sciences Po), Master's degree in Public Affairs, Public Law, Regulatory and Competition Law, 2001

Versailles St Quentin University, Master's degree in Public Law, Faculty of Law, 1999

Associations / Outside commitments

International Bar Association

American Bar Association

Le Cercle de la Compliance (ethics & compliance practitioners' association)

IFA (French Institute of Board Members)




6 Bis, rue de Montevideo
75116 Paris France

Where are we ?
Open the map