I have noticed that someone keeps putting up for sale quite a...

I have noticed that someone keeps putting up for sale quite a few shares over the last few days (sometimes 5 million, 1.5 million and 2.5 million today). At the end of the day they are taken away and may not return for a couple of days. I am thinking it may be La Jolla hoping that the coal mining contract details might come through soon (2 months up today from initial news of LOI) and sell this lot at a nice profit from their last partial note conversion. Anyone care to comment