Guillaume Collart

Etienne Boursican is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law, Mergers and Acquisitions Law and Securities Law. Etienne, who practices law in Paris, France, has been recognized since 2013. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Etienne is held by other top lawyers in the same geographic and legal practice area.

Alexandra Stocki is a top attorney recognized by Best Lawyers in the practice area(s) of Labor and Employment Law. Alexandra, who practices law in Paris, France, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Alexandra is held by other top lawyers in the same geographic and legal practice area.

Hélène Gelas advises on public law, environmental law, urban planning law and energy law, in the field of energy and real estate. She holds a doctorate in law and assists her clients, from large listed groups and investment funds to small and medium-sized French and international companies, with advice and litigation before the administrative courts and in all stages of projects, whether for major real estate development projects or for renewable energy projects (wind, photovolt...

Michel Ponsard is one of the partners in charge of the UGGC Avocats Competition Law Departement, present since the law firm's inception after an experience in Brussels. His practice mainly focuses on competition law and distribution, but also on the law of commercial contracts and commercial practices, as well as to the right of promotion and publicity. More precisely he works for a French and international clientele in fields as diverse as the automotive sector, the pharmaceutical sector, pe...

Philippe Matignon specializes in mergers & acquisitions, and more specifically in private equity and investment capital. He advises French and foreign investment funds in all their LBO and capital investment transactions. Philippe also advises teams of managers in relation to these transactions, and in corporate equity and group restructuring transactions. Philippe Matignon is also involved in restructuring operations and joint ventures on behalf of industrial players.

Olivier works for private and public clients in the design, procurement and execution of complex contracts and sustainable city projects. Olivier has a recognized expertise in energy efficiency. In March 2011, he submitted a report on energy performance contracts to the French Minister of Ecology, Sustainable Development, Transport and Housing, drafted the CPE models ("clausiers") for the Ministry of Ecology in 2012 and submitted, as co-pilot, a report on "Innovative financing of energy effic...

A member of the Paris Bar since 1989, Stéphane PERRIN graduated from the Faculties of Law of PARIS XI and PARIS II Universities, where he gained a DEA postgraduate qualification in Intellectual Property. He also graduated from PARIS II Faculty of Law’s Institute of Legal Studies. He began his career within the law firms DS Avocats (PARIS) and DUBARRY, SERVAN-SCHREIBER & WEIL (PARIS then BRUSSELS), then as a partner in SCP FLAMBARD & Associés, before creating his ow...

Stéphanie Schweitzer is a top attorney recognized by Best Lawyers in the practice area(s) of Leisure and Licensing Law, Maritime Law and Transportation Law. Stéphanie, who practices law in Paris, France, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Stéphanie is held by other top lawyers in the same geographic and legal practice area.

Edith advises leading corporates, family offices, private equity funds founders and managers on the structuring, negotiation and documentation of complex acquisitions, leveraged buyouts, corporate reorganisations and joint ventures.

Grégoire Balland is a top attorney recognized by Best Lawyers in the practice area(s) of Mergers and Acquisitions Law and Real Estate Law. Grégoire, who practices law in Paris, France, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Grégoire is held by other top lawyers in the same geographic and legal practice area.