Sigma-Aldrich's board of directors elected Avi Nash as a director, the company said last week.
Nash currently heads a management consulting firm, Avi Nash LLC, launched in 2003. Prior to this, he was a partner at Goldman Sachs. He has worked at Booz, Allen & Hamilton and UOP.
The board also appointed Jai Nagarkatti, president and chief operating officer of the company since 2004, as president and chief executive officer to replace outgoing CEO David Harvey, who will remain chairman of the board.