Employment and Stock Options Plan Explained
stason.org
stason.org
If you exercise your options, I believe you generate a taxable event. If you do not sell the stock for twelve months (as advocated in the article), you risk the stock price dropping below your strike price and you might not have enough money left to pay your tax bill. I recall reading a sob story (Money magazine?) about a guy going bankrupt because of this but I haven't been able to find it.