Mr Olivier Diaz > Gide Loyrette Nouel A.A.R.P.I. > Paris, France > Lawyer Profile

Gide Loyrette Nouel A.A.R.P.I.
15 rue de Laborde
Olivier Diaz photo

Work Department

Mergers & Acquisitions / Corporate


Admitted to the Paris Bar in 1990, partner Olivier Diaz has over 25 years’ experience in complex mergers and acquisitions, private equity operations, securities law and corporate law. His practice covers a wide variety of transactions, in particular public and private acquisitions, leveraged buyouts, joint ventures and corporate restructurings.

During his career, Olivier has worked with clients on the largest and most complex M&A transactions in France, particularly in industrial fields, such as telecoms, energy, financial institutions and the food industry. He also assists companies on complex governance issues and is regularly consulted by regulators on securities and corporate law issues.

Recognised unanimously as one of the most talented lawyers in the field of mergers and acquisitions, Olivier Diaz is regularly praised in the main international directories and by his peers as a great strategist, in particular as regards listed and non-listed operations.


Prior to joining Gide in which Olivier was previously partner from 1990 to 1998, he worked for two years at Linklaters (1998-2000), fourteen years at Darrois Villey Maillot Brochier (2000-2015) and three years at Skadden Arps Slate Meagher & Flom.


French, English


A graduate of Paris’ political sciences institute Sciences-Po (1985) and of HEC business school in Paris (1987), Olivier also holds a postgraduate degree (DESS) in international taxation from Paris XI University (1987).

Lawyer Rankings

France > Mergers and acquisitions

(Hall of Fame)

Olivier DiazGide Loyrette Nouel A.A.R.P.I.

Gide Loyrette Nouel A.A.R.P.I. remains one of the most active teams in the market thanks to its strength in domestic and cross-border work and the depth of its bench. The group is active across all market segments, with a particularly busy caseload in the upper mid-cap and large-cap range. The French firm has a wide sectorial range and an international footprint, with offices in the Americas, the Middle East, Africa and Asia as well as in Central and Eastern Europe. Practice head Olivier Diaz, Charles de RealsDidier Martin, Guillaume Rougier-Brierre, Nadège NguyenJean-Gabriel Flandrois, Thomas Urlacher, Alexis Pailleret, Axelle Toulemonde, Christophe Eck and Antoine Lelong are key contacts. Jean-Francois Louit and Caroline Lan joined from Mayer Brown in September 2019.

Paris > Fusions-acquisitions

(Les grands avocats du marché)

Olivier DiazGide Loyrette Nouel A.A.R.P.I.

Gide Loyrette Nouel A.A.R.P.I. est l’un des acteurs du marché parmi les plus actifs grâce à un large effectif et un important flux d’opérations de dimensions nationale et internationale. Le cabinet intervient sur tous les différents segments du marché et particulièrement dans des opérations de moyenne et large envergures. Il s’illustre par sa présence dans de nombreux secteurs et affiche une bonne capacité internationale à travers ses bureaux étrangers situés en Amérique, au Moyen-Orient, en Afrique, en Asie et en Europe Centrale et Orientale. L’équipe compte pour principaux intervenants: Olivier Diaz qui dirige la pratique, Charles de RealsDidier MartinGuillaume Rougier-BrierreNadège NguyenJean-Gabriel FlandroisThomas UrlacherAlexis PailleretAxelle ToulemondeChristophe Eck et Antoine Lelong. Jean-François Louit et Caroline Lan  (ex Mayer Brown  sont venus renforcer les rangs du cabinet en Septembre 2019.