PS.. Firefly just bought 50 million shares in a ppwith next to no warrants attached. So 400 000 shares is really nothing. But because of the lack of buying lately, it seems like a lot of shares for sale. Someone like Firefly could swallow them and many more up in a second. They could bring the shareprice to 10 cents for a few hundred thousand dollars.
Don't let that block for sale bother you.
Also, there are people who are selling now because of tax selling. Some people have income tax bills that they have to pay by the end of the month.