Can anyone let me know if Directors are selling, how long before...

Can anyone let me know if Directors are selling, how long before they are obligated to advise the ASX of their sale of shares?
There have been over 65,000,000 shares traded since last weeks announcement and either some of the top 20 shareholders or Directors have been selling down their holdings in that time as there are not enough shares available outside the top 20 holders to have traded that volume, even accounting for the fact that the same shares can be traded over and over.
Intersting comment from todays release is that they believe the copper grades found so far are commercially viable.
Also the copper grades are improving as the drill holes get closer to the "suspected main breccia lode".
I'm certainly hanging in there with this stock for the ride, looks extremely positive to me.