This document is a professional profile detailing the career of Ulrich Quack, a retired partner specializing in antitrust, competition, and merger control law. It outlines his extensive experience in advising both German and international clients in various legal proceedings, including those before the European Commission and the German Federal Cartel Office. The profile highlights Mr. Quack's focus on the energy sector, particularly the natural gas industry, where he provided legal counsel on regulatory and antitrust matters since the liberalization of the German energy markets in the early 1990s. Additionally, it documents his involvement in significant merger control cases, including representing Linde AG in its acquisition of BOC Group and advising TUI AG on its merger with First Choice PLC. The profile also mentions his recognition in the legal field, with multiple accolades from reputable sources, underscoring his expertise and standing as a leading lawyer in competition law.