All these trades come through at exactly the same time for the...

All these trades come through at exactly the same time for the same amount. I don't get it. Why is this so? Does someone like buying for the exact same magic number or what? Why wouldn't you buy it all in one trade, if that much stock is available at .79 rather than pay multiple brokerage? Clearly I do not understand this and I'm sure there is a straighforward explanation. Does anybody know why it would come through this way? Maybe it is a "robot" who really loves the number 5,162? If so, why?

23 11:28am 0.79 6,534 $5,162  
22 11:28am 0.79 6,534 $5,162  
21 11:28am 0.79 6,534 $5,162  
20 11:28am 0.79 6,534 $5,162  
19 11:28am 0.79 6,534 $5,162  
18 11:28am 0.79 6,534 $5,162  
17 11:28am 0.79 6,534 $5,162  
16 11:28am 0.79 4,272 $3,375  
15 11:26am 0.79 2,262 $1,787  Crossed

Excuse me for my ignorance.