You are right on Andy. Yes, when a stock reaches 42-43, insiders seems to be dumping the stock. Now the question is if external analyst have a target price of stock at 50-57, why would one just dump the stock at 42-43. Please see few examples, there are number of other examples.
CEO Nick Leschly sold 25,000 shares of bluebird bio stock in a transaction that occurred on Monday, November 3rd. The stock was sold at an average price of $41.68, for a total transaction of $1,042,000.00
bluebird bio (NASDAQ:BLUE) Insider Mitchell H. Finer sold 18,000 shares of bluebird bio stock on the open market in a transaction dated Monday, December 1st. The stock was sold at an average price of $39.70, for a total value of $714,600.00....
Lets see what happens at ASH presentation.