2 different issues here.
The warrants can be excercised at any time, but the shares issued upon excercise will carry a restrictive 144 legend. In order for the legend to be removed and for the shares to be transferred to a broker to trade in the public market 2 things have to happen
1. the shares have to have been held for at least 6 months and
2. the company has to have been compliant with 34 ACT reporting requirements for at least 3 months.
So for the guys who got warrants in Janurary, if the company were compliant then the smart thing for them to do would be to excercise in July (6 months), and, if I were them, sell enough shares to cover the excercise price and pay taxes and let the rest ride. Since the company is not compliant then the smart thing to do is to wait until they have been compliant for at least 3 months and then excercise and do what I said above.
With respect to the shares that were sold in Janurary and April, the 6 month holding period still applies but they cannot be sold until that happens and the company has been compliant for 3 months.
In any event, as I have stated before, I don't think any of this really matters. Fully diluted these guys have about 2 billion shares but would also have lots of working capital upon exercise of warrants (at least 4 million). So I think its farily simple. .05 to .10 pps is realistic given that would give them a market cap of between 100 and 200 million. If they are generating good cash flow and have growth opportunities in Ghana with working capital, this I believe is a reasonable expectation.