Prana has often done small "at-the-market" sales of stock directly on the ASX to raise a bit of cash here and there during the past couple of years. I don't know whether the Yahoo! numbers are accurate, but I suspect that Prana has enough cash to get through next March, when the Alzheimer's results are due.
They raised plenty in recent months. Go check the ASX for filings on PIPE offerrings. Also, a large option from a previous pipe offering will be exercised soon if not already because it expires in 3 weeks.