Overview
Arendt & Medernach is a leading independent business law firm based in Luxembourg with an international team and offices in Hong Kong, London, New York, Paris, and Frankfurt. It provides end-to-end legal, regulatory, tax, and advisory services to help clients do business in Luxembourg, covering areas such as fund formation, banking, insurance, private equity, real estate, corporate, and tax. The firm delivers integrated advice across all legal and regulatory aspects relevant to cross-border transactions, working with both international and domestic clients. Its goal is to help clients succeed in Luxembourg’s market by offering comprehensive, coordinated support aligned with their business objectives.
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Simplify's take
What believers are saying
- Arendt reported 6% revenue growth and over 1,250 professionals in 2026.
- It keeps winning marquee mandates, including Astorg, Bain Capital, SilverTree, and Ufenau in 2026.
- The firm is investing heavily in AI adoption, digitalisation, and new service models.
What critics are saying
- BlackFin's majority stake in AIS, announced 26 Mar. 2026, complicates integration and incentives.
- Arendt still depends on Luxembourg fund, private equity, and regulatory work concentrated in one market.
- Global firms and AI-enabled legal platforms can commoditize advice, eroding pricing power by 2027.
What makes Arendt unique
- Arendt combines legal, tax, regulatory, advisory, and investor services in Luxembourg.
- On 26 Mar. 2026, Arendt named Gilles Dusemon and Thierry Lesage co-chairs.
- Arendt called itself Luxembourg's sixth-largest law firm, with EUR 345 million revenue.
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