Passage: In January 2014 Rösler became a member of the managing board and Head of the Centre for Regional Strategies of the World Economic Forum (WEF) in Switzerland, under the leadership of chairman Klaus Schwab. From late 2017 until eary 2019, Rösler served as chief executive officer of New York-based Hainan Cihang Charity Foundation Inc., the largest shareholder of HNA Group.

Question: Before Rosler became the CEO of a charity organization, what did he do?
became a member of the managing board and Head of the Centre for Regional Strategies of the World Economic Forum (WEF) in Switzerland