Grégoire Andrieux - McDermott Will & Emery


Grégoire Andrieux focuses on mergers and acquisitions, with a particular focus on leveraged buyouts (LBOs).

Grégoire has extensive experience representing private equity institutions, family shareholders and entrepreneurs on domestic and cross-border acquisitions, (re)financings, divestitures, build-ups and debt restructurings.

Grégoire has a particular expertise in transactions in the healthcare, FIG and TMT sectors.

Grégoire is particularly recognized for his dealmaking and constructive approach. His clients highlight his legal skills, business sense and availability.

Grégoire heads the Paris office.


  • The Best Lawyers in France, Private Equity, Corporate Law and Mergers & Acquisitions, Private Equity Law, 2020-2025
  • Chambers Europe, Band 2 in France: Private Equity: Mid-market, 2022-2024
  • The Legal 500 EMEA, Leading Individual in France: Private Equity: LBO, 2022-2024
  • Mergermarket M&A Deals, Highlighted Individual, 2020


University of Texas at Austin, LLM, 2003
University of Paris I Panthéon-Sorbonne, LLM, Business Law, cum Laude, 2002
University of Nantes, Maîtrise en Droit, summa cum laude, 2001
University of Nantes, Licence en Droit, cum laude, 2000

New York

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