RE:what does this mean? Do you have a specific question about it? or are you just wondering what its telling you?
If the latter, its just documenting the regulatory filings that the company insiders have to make when they buy or sell shares. Some have noted before that it looks like the insiders have been selling shares, but if you take a closer look, what has actually happened is some of them (namely Trent Mell) have sold shares in order to raise capital so that they can exercise their warrants. Back in February, FCC exercised their right to accelerate the expiry of 2 tranches of outstanding warrants to March 15th, and so any warrants not exercised by that date would have expired worthless. Because the strike price on the warrants was much lower than the share price at the time, pretty much every single warrant was exercised, and the company was able to raise a few million dollars in additional capital (at the expense of minor shareholder dilution.)
Now, if you line the dates up with the "balance" column, you'll see that as time progresses, Trent Mell (and some other insiders, but not all of them) has actually been accumulating shares, both in his personal holdings and in his family trust. It may not look that way because of the timing of the filings, but last I checked he picked up about 500,000 shares recently.
I hope this answers your question.