I'm using CommSec Iress so I can't determine if they are buys or sells?
If they're buyers, I'd assume they want to be apart of the development of CLY, however, don't want to pay up and have realised they may not potentially get in at 0.6c.
If they're sellers, I'd assume possibly they're a little hesitant and impatient and either selling portions of their parcels to decrease risk, or just exiting all together due to the lack of volume.
Either way, I'm positioning myself with both heads and oppies, because when this goes, it'll go