Skip to content

Marc Castagnede



Castagnede Marc
Marc Castagnede



Marc specialises in mergers and acquisitions as well as private equity for listed and not-listed companies, financial institutions and investment funds.

Marc is a recognised practitioner by « Best Lawyers » since 2010 in Banking and Finance Law, Capital Markets Law and Mergers and Acquisitions Law with a specific focus on Equity.

Band 2
Chambers Global/Europe 2022 - France (Corporate / M&A)
"Marc Castagnède is well versed in a broad range of M&A transactions. He acts for French and international corporates as well as financial institutions. Clients comment: "He is a very good lawyer, he stays calm in all situations and he understands quickly the business aspects."
Leading Individual
Legal 500 EMEA 2022 - France (M&A)
"Marc Castagnède is excellent in his field, a good negotiator, subtle and fair, and develops real strategies."

Highly regarded
IFLR 1000 2021 - France (Capital Markets: Equity, M&A, Private Equity)

Related articles

Light trails in a city

News: 23 June 2022

Allen & Overy LLP advises Pathé and IDG Capital on the sale of their stakes in Olympique Lyonnais Group

Allen & Overy is advising Pathé and IDG Capital in relation to their entry into exclusive negotiations with Eagle Football Holdings LLC for the sale of their stakes in Olympique Lyonnais Group. 

Read more

News: 15 June 2022

Allen & Overy advised Symbio on a new joint venture with Schaeffler Group

Read more

News: 15 February 2022

A&O advises Ipsen in relation to the sale of its consumer healthcare business to Mayoly Spindler

Read more

News: 21 September 2021

Allen & Overy advises private equity investor Bridgepoint and PharmaZell on entering into exclusive negotiations with Novasep to create technology-driven leader for complex small molecules and ADCs

Read more



Allen & Overy LLP
52 avenue Hoche
75008 Paris

View office →



Admitted to the Bar, Paris, 1996


LLM, Harvard Law School, 1994

Post Graduate Degree, Business and Economic Law, University of Paris I, 1991

Published work

Faut-il imposer un seuil de renonciation dans les offres publiques volontaires, Revue Trimestrielle de Droit Financier, March 2011

Bidders, Expect Regulatory Action, International Financial Law Review, p. 27 and seq., September 2008

Programmes de Rachat : Légitimité ou Suspicion ?, Les Echos, 12 December 2004

PPP's in France: At a Turning Point, Privatisation & Public Private Partnership Review 2004/2005, 1 June 2004

France/US Comparison: Shareholder Voting Rights, European Financial Services Regulation, 1 November 2003