Arendt & Medernach

Able to draw upon the expertise of a large pool of lawyers across all levels of experience, and also leveraging the firm’s unique in-house regulatory and consulting service, Arendt & Medernach can provide ‘high-quality tailored solutions’ to domestic and international clients across the full scope of their corporate activity. Laurent Schummer is also a key member of the team and as well as his work for private equity firms and corporates on large-scale transactions, he also excels in helping startups/entrepreneurs from emerging sectors securing investment throughout their growth cycle. Philippe Harles ’ ‘work attitude, knowledge, and willingness to strike a deal are standout traits’, ensuring that his popularity continues to grow among start-ups, funds and corporates across a wide variety of private and public M&A. Team head Carsten Opitz is skilled at handling M&A matters, including those with a German nexus, as well as excelling in corporate governance advice. Founding partner Guy Harles has vast experience in the field and remains a trusted adviser to many corporates as is underscored by several board-level appointments by major clients. Bob Calmes left the firm post-publication in January 2026.