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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 2020 - France (Corporate/M&A)

Band 4 
Chambers Global/Europe 2020 - France (Capital Markets: Equity)

Highly regarded
IFLR1000 2020 - France (Investment Funds; Capital Markets: Equity; Private Equity; M&A)

"Marc Castagnède 's practice encompasses both public and private M&A transactions. He regularly represents multinationals and investment funds. Clients describe him as "fast, concise and efficient," before going on to add: "He has the ability to focus on the essentials.""
Chambers Global/Europe 2020 - France (Corporate/M&A)

"Marc Castagnède draws on his long-standing expertise in M&A to advise top financial institutions on a range of ECM matters. He assists with the acquisition of shares, accelerated bookbuilds and IPOs."
Chambers Europe/Global 2020 - France (Capital Markets: Equity)

"Marc Castagnède receives admiration from clients for being "highly skilled in the co-ordination of multi-jurisdictional transactions." He handles French and international M&A mandates for leading investment groups and financial services companies." 
Chambers 2019 - France (Corporate/M&A)

"Marc Castagnède assists leading French and international financial institutions and corporate clients with equity transactions. He co-heads the firm's ECM practice." 
Chambers 2019 - France (Capital Markets: Equity)

Marc is a recognised practitioner in Legal 500 2018.

News & insights

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Publications: 29 MAY 2020

Covid-19 coronavirus: emerging data protection and cybersecurity guidance (Updated 28 May 2020)

The Covid-19 coronavirus is creating a need for organisations to process personal data, for a variety of specific purposes (including managing and protecting their workforce, customers and the…

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Allen & Overy acting as global legal adviser to the French state on its Covid-19 financial support package to strategic companies

News: 22 MAY 2020

A&O advising the French state on its Covid-19 financial support package to strategic companies

Allen & Overy has been appointed as the global legal adviser to the French state as it implements exceptional measures aimed at supporting strategic companies in the country through the Covid-19…

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Publications: 22 APRIL 2020

Transacting in the time of Coronavirus

The current Covid-19 coronavirus pandemic presents a number of unique challenges for dealmakers.  Accepted truths and processes need to be challenged and adapted for the current circumstances.

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Publications: 20 APRIL 2020

Covid-19 coronavirus: Emergency measures

Holding of any type of meetings and governing bodies according to company or financial French Law; deadlines for approving the financial statements

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Allen & Overy LLP
52 avenue Hoche
75008 Paris

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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