Marc KLEYR has been a co-founder and Managing Partner of the firm for 30 years, since its inception.

Senior Partner in the firm’s Corporate and Finance Litigation department, he is highly regarded in the market for his experience in commercial and corporate litigation, with a special focus on shareholders’ litigation, finance litigation, insolvency-related litigation and audit negligence claims.


Marc has a unique expertise in multi-jurisdictional and cross-border cases. Over the last 20 years, he has been involved in all major high-profile corporate finance and insolvency-related litigation cases in Luxembourg.

Master's degree in private law, University of Strasbourg, 1990

DEUG, Center for French Legal Studies, University of Saarbrücken, 1988

Philosophy and Foreign Languages, University of Saarbrücken, 1986

English, French, German, Luxembourgish

Luxembourg Bar, admitted in 1991

International Association of Lawyers (UIA)

International Association of Restructuring, Insolvency & Bankruptcy Professionals (INSOL)

R3 – Association of Business Recovery Professionals

Chambers Europe 2024 - Lawyer top ranked Eminent Practitioners, Dispute Resolution

Legal500 EMEA, 2024 - Leading individual, Dispute Resolution

Chambers Europe 2024 - Top ranked band 1, Dispute Resolution

Leaders League - Excellent, Dispute resolution - Commercial litigation - Ranking 2024 - Law firm - Luxembourg

Leaders League - Excellent, Luxembourg – Best Law Firms for International Arbitration – 2024

Leaders League - Leading, Luxembourg – Best Law Firms for Restructuring & Insolvency – 2024



Read the latest related news from our experts or explore our full insights which cover new laws, bills, and ongoing developments.