I do not have a handle on the number 'not fully vested', but my thinking has been that there is an effort to have all that can be converted, be converted by May 31, the end of the fiscal quarter and year.  This would be an added measure of 'tidiness' for the year end report.  And, if not completed by May 31, then by the issue date of the 10q and k, so that it can reported as a subsequent event letting the public know where the matter stands as of that date. 

Just mho.  Best

And, look for Lebron and the Cavs to rebound (no pun intended).