Contrary to popular belief, Martha Stewart didn't go to jail for insider trading.
She went to jail for:
Conspiracy - Stewart was found to have conspired with her broker Peter Bacanovic to obstruct justice and make false statements in the ImClone insider trading investigation.
Obstruction of justice - Stewart was found to have tried to hamper the SEC investigation of her stock sale by providing misleading information and attempting to tamper with a phone message from Bacanovic.
False statements - Stewart was found to have lied to the Securities and Exchange Commission, the FBI, and federal prosecutors when she claimed she had prearranged with her broker to sell her ImClone stock when it fell below $60 per share. She was also found to have lied about not recalling being told that the family of ImClone founder Samuel Waksal was selling stock.
The criminal charge for securities fraud was dismissed.