By my calculations based on:1. $4,531,899 confirmed costs last...

By my calculations based on:

1. $4,531,899 confirmed costs last year, and
2. $3,375,027 cash at bank on 31 December 2018, and
3. an assumption that costs will continue at a similar or greater rate than last year;

We will run out of cash by 28 September 2019 at latest. 

With developments ramping up I would assume (my assumption only) that costs will be greater this year than last, hence the cash will run out in perhaps July/August.  If this occurs we would need a CR by June.  With escrowed shares potentially being released after 31st March and no significant partner news in sight, this thing could drift down for months before more dilution occurs.  All in my opinion only, and still hanging on by a thread...