Sabine Chastagnier

Jeanne BOSSI MALAFOSSE is head of the Personal Data Department and co-head of the Life Sciences Department. She has significant experience in personal data protection and various questions relating to life sciences, particularly in the area of health information systems.She assists organizations in the following subjects : compliance with personal data protection principles in all sectors preparation for Europe’s new General Data Protection Regulation regulatory framework of planned hea...

Matthieu Candia is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law. Matthieu, who practices law in Paris, France, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Matthieu is held by other top lawyers in the same geographic and legal practice area.

Diane de Moüy is a top attorney recognized by Best Lawyers in the practice area(s) of Banking and Finance Law, Project Finance and Development Practice and Structured Finance Law. Diane, who practices law in Paris, France, has been recognized since 2016. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Diane is held by other top lawyers in the same geographic and legal practice area.

Diane Le Chevallier is a top attorney recognized by Best Lawyers in the practice area(s) of Banking and Finance Law and Structured Finance Law. Diane, 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 Diane is held by other top lawyers in the same geographic and legal practice area.

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.

Xavier Leroux is a top attorney recognized by Best Lawyers in the practice area(s) of Venture Capital Law. Xavier, who practices law in Paris, France, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Xavier is held by other top lawyers in the same geographic and legal practice area.

Stéphanie Guedes da Costa focuses particularly on relations with employee representative bodies, professional elections, collective bargaining, as well as restructuring operations (including employee transfers, voluntary departure plans, and employment protection plans). She advises both French and international companies, providing support in both advisory and litigation matters (covering individual and collective issues). For many years, she has also assisted entities with mixed-stat...

Marie Piot is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law. Marie, 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 Marie is held by other top lawyers in the same geographic and legal practice area.

Jérôme’s practice is focused on all aspects of international and domestic taxation and primarily on tax aspects of mergers and acquisitions, group structure reorganizations and private equity transactions.

Alexis Terray is a Partner in the Corporate/M&A/ Private Equity department of Winston & Strawn Paris. His practice focuses on mergers and acquisitions and corporate law. With extensive experience in leverage buy-out (LBO) transactions, he is recognized as one of the top specialized lawyers in France for advising investment funds and management teams.