FMR has sold 1,343,547 shares of INSM since 6/6/13. Data on the Nasdaq website indicates they owned 4,719,290 shares at the end of the 3rd quarter. That leaves them with 3,375,743 shares. Nasdaq indicates that there are a total of 38M INSM shares. This means that FMR is now a 8.9% holder of INSM, meaning that they shouldn't be obligated to submit any more Form 4s, since they have fallen below the 10% ownership threshold for reporting. I, for one, will be glad not to see them. I think it's been a drag on the stock price.
Ah but that is good in the long run. I suppose multiple different funds picked all those shares. Now we are no longer controlled by one we have many competing for shares. The more the merrier they say.