Insider selling is hardly ever a good determination of stock's future performance. Insiders selling is typically a small fraction of the person's total position. Maybe their selling some stock to pay for a new house, diversify their retirement investment, etc. etc... For example, Colin Angle recently sold 21,000 of his iRobot shares. He still holds close to 500,000 shares. It's a drop in the bucket.
From the conference call - "in terms of 2013 that was less than $10 million coming from China. We do, again as Colin mentioned earlier, expect that, that number will grow into 2014. We’re not giving specific guidance on China as an element but given our limited distribution so far in that region we do continue to see it as being a significant growth driver for us."
Seemed like he was pretty favorable towards the stock. It would be cool if he had Colin Angle come on the show sometime in the near future.