bwx chart, page-16

not saying this is the reason, but it could be.

Some shares that have been in escrow since the IPO are now out. If there is a holder taking profits, they may contract a brokerage to sell down the shares and the goal of the broker is to achieve an average price. This means that their computer will dribble shares into the market over the course of weeks, even months depending on the volume. This reduces the risk that the broker will sell the shares on the wrong day and be effected by unrelated market risk.

There isn't a stack of liquidity so if it is a big parcel, it will depress the price for a bit. Looking at shortman.com, it is probably being helped by a bit of short selling too (up circa 3%).

I was worried for a bit that there was maybe something I didn't know but I have been over the company again and I am comfortable.