Gupta's Goldman board call and tip
On September 23, 2008, Rajat Gupta, former McKinsey managing director and a Goldman Sachs board member, joined a board call approving Warren Buffett's $5 billion investment in Goldman. Phone records showed he called Galleon founder Raj Rajaratnam within about a minute of hanging up, and Galleon bought Goldman shares minutes before the market closed, ahead of the public announcement. The episode became the core of Gupta's 2012 insider-trading conviction, which followed Rajaratnam's 2011 conviction and 11-year sentence.