
Resourcing matters by utilising a formidable roster of lawyers and also drawing upon supplemental services, including the firm's Regulatory Consulting service and a standalone corporate governance function, independent full-service leviathan Arendt & Medernach has the critical mass and knowledge to handle a tremendous range and volume of matters for local and international stakeholders. As well as advising on the Luxembourg aspects of large-scale strategic transactions, the team also regularly provides the local law structuring advice on big-ticket sponsor-backed M&A. Team head Carsten Opitz is central to the firm's success on behalf of private equity sponsors on their JV and M&A activity, work which he combines with a more general corporate governance advisory role for international and local clients handling business in Luxembourg. Philippe Harles also handles cross-border fund-backed M&A work, as well as regularly advising on corporate transactions in the financial services sector. Other recommended practitioners include Alexander Olliges, whose work includes venture capital fundraising and advice on de-SPAC combinations; Laurent Schummer, who has strong ties with many local start-ups; and Guy Harles, whose trusted adviser status is underscored by his role on several company boards. Bob Calmes departed the team in November 2025.
Legal 500 Editorial commentary
Accolades
Client satisfaction: Sector knowledge
Testimonials
Collated independently by Legal 500 research team.
- 'The team is approachable and responsive.'
Key clients
- Alvotech
- Belfius Bank
- Coinbase
- L’Occitane Groupe S.A.
- HomeToGo SE
- Procaps Group, S.A.
- Salonkee
- SES ASTRA S.A.
- Spotify
- Sweco Group
Work highlights
Advised Allianz and a consortium comprising BlackRock and T&D Holdings in their project set to acquire Viridium Group from Cinven, and the setup of the acquisition and investment structure for the transaction.
Advised L’Occitane Groupe in connection with the voluntary conditional general offers and related Luxembourg and Hong Kong driven squeeze-out and delisting of L’Occitane International S.A., a global multi-brand group specialising in the manufacture and retail of premium beauty and wellness products.
Advised Clayton Dubilier & Rice (CD&R) on the Luxembourg legal aspects of the €10bn acquisition by CD&R of a 50% controlling stake of Sanofi’s consumer healthcare business Opella.
Lawyers
Hall of Fame
The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.

Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.
Philippe Harles

Carsten Opitz
Practice head
Carsten Opitz
Other key lawyers
Guy Harles; Laurent Schummer; Alexander Olliges; Philippe Harles; Fouzia Benyahia

