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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.

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

Band 2
Chambers Global/Europe 2021 - France (Corporate/M&A)

"The 'really friendly and excellent' Marc Castagnède is well versed in a broad range of M&A transactions, including deals with private equity elements. He acts for French and international corporates and financial institutions."
Chambers Global/Europe 2021 - France (Corporate/M&A)

"As part of the firm's wider capital markets practice, and with complementary tax and corporate capabilities, counsel Olivier Thébault and practice heads Diana Billik and Marc Castagnède are key pillars in the firm's Paris offering, not the least due of their combined ability to assist with French, English and US law, alike. "
Legal 500 EMEA 2021 - France (Capital Markets: Equity)

Highly regarded
IFLR 1000 2020 - France (Capital Markets: Equity, M&A, Private Equity, Investment Funds)

"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 Global/Europe 2020 - France (Corporate/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 (Capital Markets: Equity)

Highly regarded
IFLR 1000 2019 - France (Capital Markets: Equity, M&A, Private Equity, Investment Funds)

"Marc Castagnède assists leading French and international financial institutions and corporate clients with equity transactions. He co-heads the firm's ECM practice."
Chambers Global/Europe 2019 - France (Corporate/M&A)

"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 Global/Europe 2019 - France (Capital Markets: Equity)

News & insights

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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

Allen & Overy has advised private equity house Bridgepoint through its Germany-based portfolio company PharmaZell GmbH on entering into exclusive negotiations with Lyon-headquartered Groupe Novasep…

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A modern building with shades of red, white and blue

News: 26 AUGUST 2021

Allen & Overy advises RAJA Group on the acquisition of Viking and its Office Depot Europe operating business

Allen & Overy Paris advised RAJA Group, Europe's leading multichannel distributor of supplies and equipment for businesses, on the conclusion of an agreement with Aurelius to acquire the Viking…

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hospital beds

News: 30 JULY 2021

Allen & Overy advises Wren House on its acquisition of a majority stake in Almaviva Santé

Allen & Overy advised the global investment fund specialized in infrastructure financing Wren House in the context of its entry into exclusive negotiations with Antin Infrastructure Partners for the…

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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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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