Rajat Gupta

After telephone calls with Lloyd Blankfein about Goldman's profits and Berkshire Hathaway's $5 billion investment, former Goldman Sachs board member Rajat Gupta, who was just charged with insider trading, didn't wait one minute before calling Raj Rajaratnam with the good -- and bad -- news.

You'd think that Gupta would have made some attempt to keep his alleged insider trading under wraps.

Nope!

Example: On one call in 2008, Gupta got off the phone with the Board at 3:56 pm. He had just learned that Berkshire Hathaway would make a $5 billion investment in the bank, which would go public the next day.

He called Raj on the same line at 3:57 pm -- not even a full minute after learning of the enormous new stake.