Like many others, the ex DeBeers bod probably knows the value of AFD, and thought 1.27 was a very good price.
But when did share price ever have anything to do with value?
The firmer the production parameters for AK6 become - and basically the more valuable AFD becomes - the lower the share price slips.
There really is no accounting for the whims and vagaries of your average private investor. And no accounting at all for the traders. The more derisked a project becomes, the less interest there is in it, when it really should happen in reverse!