Member of the Paris Bar since 2012, Guillaume has been a partner at Oyat since 2022.
He previously worked at Latournerie Wolfrom Avocats as Counsel within the corporate team.
Guillaume regularly assists companies, investment funds, management teams and industrialists in their M&A transactions (sale, acquisition, equity investment, carve out, restructuring, creation of joint-ventures), private equity (venture capital, development capital & LBO) and the implementation of management packages.
He also regularly assists start-ups in their development and in obtaining their first financing (seed BA/VC and series A/B).
His oyat is in Donnand, Belle-Île.
EDUCATION
- University of Paris IX – Jean Monnet Faculty – Master of International Business Law
- University of Panthéon-Assas Paris II – Master’s degree in Business and Tax Law
LANGUAGES
French, English
RANKINGS & AWARDS
Legal 500 EMEA 2025
- 2025-2026 Venture Capital and Growth Capital – Tier 4
‘The Oyat PE team provides excellent, commercial and pragmatic legal advice and services. Expert knowledge of the market in France. The team handles significant PE and M&A deals thanks to their extensive international network and the international approach to their work.’
‘The team is friendly and very business-oriented, which is critical to effectively advise on multi-jurisdictional transactions.’
‘I rate them as a very strong team with significant experience and ability to understand the business and specific needs of clients requiring PE advice.’
Décideurs Juridiques / Leaders League 2025 2026
/ Banking & Finance
- Maritime asset financing : Highly recommended
/ Private Equity
- Lower mid & small-cap LBO transactions : Excellent
- Management Packages : Highly recommended
- Develoment capital transactions : Highly recommended
- Venture Capital : Highly recommended
/ Mergers & Acquisitions
- Transactions up to €75 million : Highly recommended
Le Point 2025
- Mergers and acquisitions (M&A) / 5 stars
- Private Equity and Venture Capital / 5 stars
- Corporate Law / 5 stars