Cometh the hour, goeth the man, page-8

There was approximately 500k shares sold within 4 minutes around 1:40pm.
Sell parcels of 14,888+ 26,705 + 150,500 + 226,280 units plus 92,632 units (across 3) in the minute before the larger parcels.

ASIC should really be looking into these transactions as they seem to be deliberate market manipulation. These should have been drip fed into the market rather than slammed in, recklessly moving the SP close to 10% is a grey area but I wouldn't expect much from the authorities though.