@trousergecko in my experience, a cornerstone usually comes in at a 20% premium.
Thursdays announcement states that an investment decision by either a cornerstone or strategic investors is expected within the next 2 weeks.
A 20% premium on yesterday's closing SP is a rounded price of 44c.
It's a hypothetical, but announcement of a raise at 44c would immediately tell the market that this is currently what the company is worth and in my experience, the SP quickly moves to this price level.
I wish you the best of luck in your investments, but I think Thursdays announcement highlights that there are some very immediate short term gains to come