Jac
I just the previous Appenix 3bs (Sep and May I think).
They both had the 50m+ options with strike price of $1.28. So they are not a 'recent' issue.
Still someone is going to make a lot of money or the company's expectation of the share price in 2018 is not that good.
I suspect (and hope for holders) that it is the former!
Cheers