Ariel is a partner and co-heads the Litigation and Dispute Avoidance & Resolution practice group.

He specialises in civil and commercial law, advising and assisting domestic and international private and corporate clients with all stages of commercial and financial disputes, including pre-litigation actions, court and arbitral proceedings, enforcement and settlement.

Ariel’s focus lies on corporate, security and shareholder disputes, especially within the context of fund and private equity structures, joint ventures, buyouts and family holdings. Ariel is also very familiar in the areas of insolvency, recognition and enforcement of foreign judgments / arbitral awards and white-collar crime.

Previous to joining Harvey, Ariel spent the first 12 years of his career working in the Dispute Resolution practice of Luxembourg’s largest business law firm where he gained considerable expertise in business litigation.

He has been a member of the Luxembourg Bar since 2012 and serves on the bar subcommittee on economic law, focusing on class actions.

Ariel was a member of the board of directors of the Nederlands Handelsforum Luxemburg (the equivalent of the Dutch Chamber of Commerce in Luxembourg) from 2016 until 2021 and served as its chairman between 2018 and 2021.

He has authored two articles on asset tracing and collective redress.

Ariel holds a Master of Laws (LL.M.) in Law and Economics from University College London, as well as a Master of Laws (LL.M.) in European Banking and Financial Law from the University of Luxembourg.

He speaks English, French, Dutch and Luxembourgish.


  • Counsel at Arendt & Medernach
  • Senior Lawyer (Secondment) at Banque Havilland S.A.


English, French, Dutch and Luxembourgish


  • Luxembourg Bar (since 2012)
  • Member of the Luxembourg Bar Commission on civil procedure
  • Member of the Nederlands Handelsforum Luxemburg
  • Previous member and chairman of the board of the Nederlands Handelsforum Luxemburg


  • University College London, LL.M. in Law & Economics (2010/2011)
  • University of Luxembourg, Master/LL.M. in European Banking and Financial Law (2008/2010)
  • University of Strasbourg and University of Luxembourg, Bachelor in Law and European Studies (2005/2008)


  • Certificate of Completion of Judicial Traineeship (2014)
  • Complementary Courses on Luxembourg Law (CCDL) (2012)


  • « The Asset Tracing and Recovery Review: Luxembourg », The Laws Review, Ed. Law review, Robert Hunter, September 2022
  • « The Class Actions Law Review: Luxembourg », Ed. Law review, Camilla Sanger and Peter Wickham, April 2023