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With over 25 years' experience, his practice focuses on corporate and acquisition financing, project finance and debt capital markets (Schuldscheins, 144A placements, private placements, bond issuances listed in Paris, Luxembourg or in Africa).

Contrary to other players of the market, Louis is working mainly on the corporates' side which allows him to have a real freedom in the negotiation process and in relation to the advice he can give to his clients.

His double expertise in banking and debt capital market is also viewed by his clients as a strong advantage as they have a sole contact point for all their financings. This is a guarantee of efficiency and ensures a perfect harmony of the financial documentation.

Louis has also a very strong know-how in ESG financing for having worked on many of such innovative transactions on the French market.

Last, Louis has a wide experience of financing transactions in Francophone Africa.

  • Ranked by Forbes France 2022 and Forbes France 2023 in the top 40 lawyers of the CAC 40.
  • Ranked by Chambers Europe France 2023 – Capital Markets: Debt.
  • Recognised as "Leading Individual" for Capital Markets: Debt in Legal 500 France 2023.
  • Recognised as "Leading Individual" for Banking and Finance: Transactional Work in Legal 500 France 2023.
  • Recognised by Best Lawyers 2024 for Banking and Finance Law, Capital Markets Law, and Structured Finance Law in France
  • Recognised by IFLR 1000 2023 as "Highly regarded" for Banking, Project finance, Capital markets: Debt.
  • Client's feedback in Chambers Global 2023 – Capital Markets told that 'Louis de Longeaux is sought after by issuers on mandates linked to private placements, bond issuances and EMTN programmes '.
  • 'Louis de Longeaux is distinguished by his professionalism and his ability to listen, which greatly facilitates exchanges. Very pleasant to work with him ' Legal 500 EMEA 2023 – Capital markets: Debt.


Louis holds a degree in Business Administration and Finance and a post-graduate degree in Business Law from Université Paris II – Panthéon Assas (Magistère de Juriste d'Affaires and DESS de droit des affaires et fiscalité), as well as an LL.M. from the University of London. He also teaches the negotiation of corporate financing and ESG financings in the vocational training program organised by the Association Française des Trésoriers d'Entreprise (AFTE).

He speaks French and English fluently.

Experience & expertise

Selected matters

  • Guerbet on a EUR 100 million syndicated credit facility, a EUR 50 million EuroPP and a EUR 50 million recovery bond (obligations relance)
  • Airbus for its EUR 8 billion syndicated credit facility
  • Euralis for its EUR 390 million syndicated credit facility and its EUR 89 million financing granted by the European Investment Bank (EIB)
  • Schneider Electric on its GBP 4.1 billion bridge facility to finance a take-over bid on Aviva and its refinancing through bond issuances listed on Euronext
  • L'Oreal on the financing of the acquisition of Aesop
  • JC Decaux for a EUR 600 million bond listed on Euronext
  • ADP on the setting up of its EUR 10 billion EMTN program
  • Nexity for the issuance of a EUR 240 million convertible bond
  • Arkema for the issuance of a EUR 400 million perpetual bond listed on Euronext
  • SEB for its EUR 650 million Schuldschein
  • Safran on a EUR 564 million USPP
  • Danone on a USD 5.5 billion 144A
  • Facility for Energy Inclusion (FEI) in relation to the financing of a 20MW solar photovoltaic facility in Senegal