Go to the site in quotes above and look at the data for insider sales for Linked In. You will see that insiders have been making regular and predictable sales of LNKD stock for several months. The sales are planned, and by law must be planned one year in advance.
Don't be fooled by the same fools that are trying to scare you out of your positions. They are desperate and will say anything to bring the price of the stock down.