I am also thinking about whole situation. It is company who has shares to sell or the people to whom shares are given by company.
some are mentioned in last Q report. but some body is buying as we can see from big volume days.
price has not moved yet
I can think of only two reasons
1 - inexperienced accumulator/s, who are not realizing that they need to do some thing beside acumulation( buy run )to make it move.
2- it can be part of strategy of accumulator/s to drain the bigger compitition in the run( the company, or those people given shares by company ) 1st
once they they are satisfied that compitition is knocked out, they will move to buy the run.
but you are right, it can`t be held long or else accumulator/s may loose the game.