Hubert holds a post graduate degree in private law from the Université Paris I – Panthéon Sorbonne, a post graduate degree in business law from the Université Paris II – Panthéon Assas, and a Master of Laws from Yale Law School.
He is registered with the Paris and New York State bars.
Hubert is Head of Corporate in Paris.
Hubert has more than 25 years of experience and specialises in private and public M&A, joint ventures, stock exchange law, capital market transactions, corporate governance and group reorganisations. He acts for French and international clients on a range of domestic and cross border matters across a wide range of sectors.
Ranked in the “Top 40 CAC 40 lawyers” (“Top 40 des avocats du CAC 40”) by the Forbes magazine (since 2021). “Very good strategist, excellent advice, he has a real talent for addressing the right messages, analyses, and recommendations to top management.”
Chambers Global and Chambers Europe – Corporate/M&A (2024). "Hubert Segain is vastly experienced, very easy to get along with and very insightful. He combines a wealth of transactional experience and commercial nuance and intelligence."
Legal 500 EMEA – M&A (“Leading Individual”) (2023). "He is very much acquainted with our business stakes and environment that make his input very much valuable, he generates trust from our teams, and re-assurance due to his high level of expertise and creativity to find solutions…when complex issues arise." Also ranked by IFLR1000, Acritas Stars, Best Lawyers and as a Thought Leader in France 2026 by Lexology (Who’s Who Legal).
Other notable testimonials include:
“Hubert has a rare ability to manage all aspects of a complex transaction with acuity and strategy, as well as a true understanding of the issues of the various parties.”
“He is a great ally in the complex M&A transactions we manage and an excellent negotiator.”
“Hubert Segain has impeccable technical mastery, a true strategic vision and a pragmatism that drives projects forward.”
“Hubert Segain's fine understanding of business issues and creativity make him a trusted partner for his clients.”
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