Clearing up the liability side of the balance sheet for something, maybe it's just good business sense but the large short position piled on over the last month probably was the writing on the wall something was happening.
Debt conversion also puts a final number on shares out other than options which should all get exercised over time.
The financial statement on SGR is propbably now the most bare bones of any company out there. Easy to value, easy to compare, they have an ultra high grade discovery, are most likely cash flow positive and are soon to be debt free.
It's like they are getting ready to put the for sale sign on the front lawn.