Arendt & Medernach

Legal Services | Luxembourg
tel: +352 40 78 78 1 | fax: +352 40 78 04
41A, avenue J.F. Kennedy | Luxembourg | L-2082 | Luxembourg

Main Contacts

Guy Harles


Jean-Marc Ueberecken

Managing Partner

Michèle Eisenhuth

Partner, Co-Chair

Claude Niedner

Partner, Co-Chair



About Arendt - your legal, tax and business services firm in Luxembourg

Arendt combines the entire value chain of services
dedicated to Asset Managers, Banks, Insurers, Public Institutions,
Commercial Companies and Private Clients operating in Luxembourg.
- Legal & Tax
- Regulatory & Consulting
- Investor Services

Legal & Tax

We assist clients in structuring and running their business from a legal and tax standpoint across Luxembourg. Our teams directly serve international clients or work in close collaboration with foreign partner law firms.
Together, with our regulatory consultants and investor services experts, we bridge the gap between legal/tax advice and its implementation. We deliver best-in-class services for our clients’ business life cycle.
With over 450 legal experts at Arendt & Medernach, we are able to advise you in the following areas:
- Administrative Law, Property, Construction & Environment
- Banking & Financial Services
- Business Crime
- Commercial & Insolvency
- Corporate Law, Mergers & Acquisitions
- Litigation & Dispute Resolution
- Employment Law, Pensions & Benefits
- EU Financial & Competition Law
- Finance & Capital Markets
- IP, Communication & Technology
- Insurance & Reinsurance Law
- Investment Management
- Private Clients
- Private Equity & Real Estate
- Tax Law

Regulatory & Consulting

We help clients remain compliant while running a profitable business.
What sets us apart is our ability to combine our business consulting skills with our extensive regulatory knowledge.
Our regulatory & consulting services complement the legal expertise and investor services of Arendt. This allows us to advise and support companies as they navigate legal and regulatory challenges, enabling them to run their business in an efficient and compliant manner.
With over 120 regulatory specialists at Arendt Regulatory & Consulting, we are able to assist you in:
- Regulatory & AML/CFT Compliance
- ESG Strategies
- Cross-Border Distribution
- Business & Tech Transformation
- Forensic Investigations, Compliance & Litigation Support
- Managed Services

Investor Services

We help clients efficiently run the operational side of their business by providing a comprehensive suite of investor services.
Deploying market leading technology, our 300 strong team provide clients with an integrated suite of fund and corporate services, delivered to the highest market standards.
Our investor services complement the legal expertise and regulatory & consulting services of Arendt. We are a Professional of the Financial Sector (PFS) supervised by the CSSF and ISO 22301 certified.
With over 300 investor services experts at Arendt Services and AManco, we are able to provide you with:
- Corporate Services
- Fund Administration Services
- Governance Services
- Operational AML & Compliance Services
- Tax Compliance Services
- Third Party AIFM Services

Year this Office was Established: 1988
Lawyers Worldwide: 450


Areas of Practice


Compliance Will Need Banks to explain “How the AI Systems Work” - Delano Magazine

Compliance Will Need Banks to explain “How the AI Systems Work”  Delano Magazine Written by: Kangkan Halder Published on 24.12.2023 The growing role of artificial intelligence in processing information for legal documentation and counsel won't eliminate the need for human lawyers or ethical judgments, argue Marc Mouton and Astrid Wagner, partners at Arendt & Medernach...

11th package of EU economic sanctions against Russia

On 23 June 2023, the Council of the European Union adopted its eleventh package of restrictive measures against Russia, which supplements those discussed in our previous newsflashes_. This latest package aims to tackle the circumvention of previously adopted sanctions and also adds additional restrictions. The Council has adopted three regulations: Council Regulation (EU) 2023/1214 of 23 June 2023 amending Regulation (EU) No 833/2014 concerning restrictive measures in view of Russia’s actions destabilising the situation in Ukraine...

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Arendt & Medernach advised on Auna S.A.’s US$360m NYSE IPO

Arendt & Medernach acted as Luxembourg legal advisor to Morgan Stanley, J.P. Morgan, BTG Pactual, Santander, Citigroup, and HSBC as underwriters on Auna S.A.’s US$360 million initial public offering of 30 million class A shares that began trading on the New York Stock Exchange on 22 March 2024 under the ticker “AUNA” at a price of US$12.00 per class A share.The offering settled on 26 March 2024.Luxembourg based Auna S.A...

Frankfurt office opening for Arendt

Arendt is proud to announce the launch of its new representative office in Frankfurt, Germany, in 2024.Lesen Siehier die deutsche Version_Arendt assists its clients on an international scale on Luxembourg law matters. We have a thorough understanding of the German legal and economic environment, as well as strong experience with Germany-based asset managers and financial institutions, including the Frankfurt Stock Exchange and the European Central Bank...

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