Jail, I'd assume. Holmes (and Balwani) have been indicted on nine counts of wire fraud and two counts of conspiracy to commit wire fraud by a federal grand jury (they've pleaded not guilty).

Wire fraud apparently carries a maximum penalty of 20 years, so they could be going away for a while. Holmes is also barred from serving as a director or officer of a public company for 10 years, due to a previous SEC settlement.