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 2026
- Private equity: venture/growth capital – Tier 4
“The PE team at Oyat is extremely commercially minded, very responsive and delightful to work with. They provide excellent commercial and practical advice and are able to pull in experts from other parts of the firm. The team has an extensive international network which helps enormously on multijurisdictional deals.”
Décideurs / Leaders League 2026
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 2026
- Mergers and acquisitions (M&A) – 5 stars
- Private Equity and Venture Capital – 5 stars
Best Law Firms 2027
Regional Tier 3 – Paris : Corporate Law
“The PE team at Oyat is extremely commercially minded, very responsive and delightful to work with. They provide excellent commercial and practical advice and are able to pull in experts from other parts of the firm. The team has an extensive international network which helps enormously on multijurisdictional deals.” – Legal 500