Tannersfriend: But since then SI sold 2,000,000 shares, this is 6.6 times more, - and silence from POET side? Well, can Chris Chu explain us why?

Probably he can't unless Sheldon offers an explanation. And he will tell you that the company isn't oblieged to explain insider transactions and that it won't comment on the share price. Well, this seems to be part of the deal.

On the other hand, the explanation is simple: Pinetree is under fire, see http://divestor.com/2014/10/14/pinetree-capital-re-visited-another-debt-opportunity/. Pinetree obviously was under time pressure, had no time to find an investor and was forced to throw material on the market.